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Process::Status.allocate.pid. (pst_inspect): don't raise if self is not initialized. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18752 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
5273 lines
128 KiB
C
5273 lines
128 KiB
C
/**********************************************************************
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process.c -
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$Author$
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created at: Tue Aug 10 14:30:50 JST 1993
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
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Copyright (C) 2000 Information-technology Promotion Agency, Japan
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**********************************************************************/
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#include "ruby/ruby.h"
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#include "ruby/signal.h"
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#include "ruby/io.h"
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#include "ruby/util.h"
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#include "vm_core.h"
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#include <stdio.h>
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#include <errno.h>
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#include <signal.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef __DJGPP__
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#include <process.h>
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#endif
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#include <time.h>
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#include <ctype.h>
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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struct timeval rb_time_interval(VALUE);
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifndef MAXPATHLEN
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# define MAXPATHLEN 1024
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#endif
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#include "ruby/st.h"
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#ifdef __EMX__
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#undef HAVE_GETPGRP
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#endif
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#include <sys/stat.h>
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#ifdef HAVE_SYS_TIMES_H
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#include <sys/times.h>
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#endif
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#ifdef HAVE_GRP_H
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#include <grp.h>
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#endif
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#if defined(HAVE_TIMES) || defined(_WIN32)
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static VALUE rb_cProcessTms;
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(w) (((w) & 0xff) == 0)
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(w) (((w) & 0x7f) > 0 && (((w) & 0x7f) < 0x7f))
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#endif
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#ifndef WIFSTOPPED
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#define WIFSTOPPED(w) (((w) & 0xff) == 0x7f)
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#endif
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(w) (((w) >> 8) & 0xff)
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#endif
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#ifndef WTERMSIG
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#define WTERMSIG(w) ((w) & 0x7f)
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#endif
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#ifndef WSTOPSIG
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#define WSTOPSIG WEXITSTATUS
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#endif
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#if defined(__APPLE__) && ( defined(__MACH__) || defined(__DARWIN__) ) && !defined(__MacOS_X__)
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#define __MacOS_X__ 1
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#endif
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
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#define HAVE_44BSD_SETUID 1
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#define HAVE_44BSD_SETGID 1
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#endif
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#ifdef __NetBSD__
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#undef HAVE_SETRUID
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#undef HAVE_SETRGID
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#endif
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#ifdef BROKEN_SETREUID
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#define setreuid ruby_setreuid
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#endif
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#ifdef BROKEN_SETREGID
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#define setregid ruby_setregid
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#endif
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#if defined(HAVE_44BSD_SETUID) || defined(__MacOS_X__)
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#if !defined(USE_SETREUID) && !defined(BROKEN_SETREUID)
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#define OBSOLETE_SETREUID 1
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#endif
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#if !defined(USE_SETREGID) && !defined(BROKEN_SETREGID)
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#define OBSOLETE_SETREGID 1
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#endif
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#endif
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#if SIZEOF_RLIM_T == SIZEOF_INT
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# define RLIM2NUM(v) UINT2NUM(v)
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# define NUM2RLIM(v) NUM2UINT(v)
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#elif SIZEOF_RLIM_T == SIZEOF_LONG
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# define RLIM2NUM(v) ULONG2NUM(v)
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# define NUM2RLIM(v) NUM2ULONG(v)
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#elif SIZEOF_RLIM_T == SIZEOF_LONG_LONG
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# define RLIM2NUM(v) ULL2NUM(v)
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# define NUM2RLIM(v) NUM2ULL(v)
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#endif
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#define preserving_errno(stmts) \
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do {int saved_errno = errno; stmts; errno = saved_errno;} while (0)
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/*
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* call-seq:
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* Process.pid => fixnum
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*
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* Returns the process id of this process. Not available on all
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* platforms.
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*
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* Process.pid #=> 27415
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*/
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static VALUE
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get_pid(void)
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{
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rb_secure(2);
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return PIDT2NUM(getpid());
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}
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/*
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* call-seq:
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* Process.ppid => fixnum
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*
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* Returns the process id of the parent of this process. Always
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* returns 0 on NT. Not available on all platforms.
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*
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* puts "I am #{Process.pid}"
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* Process.fork { puts "Dad is #{Process.ppid}" }
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*
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* <em>produces:</em>
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*
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* I am 27417
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* Dad is 27417
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*/
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static VALUE
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get_ppid(void)
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{
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rb_secure(2);
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return PIDT2NUM(getppid());
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}
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/*********************************************************************
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*
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* Document-class: Process::Status
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*
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* <code>Process::Status</code> encapsulates the information on the
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* status of a running or terminated system process. The built-in
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* variable <code>$?</code> is either +nil+ or a
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* <code>Process::Status</code> object.
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*
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* fork { exit 99 } #=> 26557
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* Process.wait #=> 26557
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* $?.class #=> Process::Status
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* $?.to_i #=> 25344
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* $? >> 8 #=> 99
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* $?.stopped? #=> false
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* $?.exited? #=> true
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* $?.exitstatus #=> 99
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*
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* Posix systems record information on processes using a 16-bit
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* integer. The lower bits record the process status (stopped,
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* exited, signaled) and the upper bits possibly contain additional
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* information (for example the program's return code in the case of
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* exited processes). Pre Ruby 1.8, these bits were exposed directly
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* to the Ruby program. Ruby now encapsulates these in a
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* <code>Process::Status</code> object. To maximize compatibility,
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* however, these objects retain a bit-oriented interface. In the
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* descriptions that follow, when we talk about the integer value of
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* _stat_, we're referring to this 16 bit value.
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*/
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static VALUE rb_cProcessStatus;
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VALUE
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rb_last_status_get(void)
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{
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return GET_THREAD()->last_status;
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}
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void
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rb_last_status_set(int status, rb_pid_t pid)
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{
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rb_thread_t *th = GET_THREAD();
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th->last_status = rb_obj_alloc(rb_cProcessStatus);
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rb_iv_set(th->last_status, "status", INT2FIX(status));
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rb_iv_set(th->last_status, "pid", PIDT2NUM(pid));
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}
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static void
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rb_last_status_clear(void)
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{
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GET_THREAD()->last_status = Qnil;
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}
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/*
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* call-seq:
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* stat.to_i => fixnum
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* stat.to_int => fixnum
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*
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* Returns the bits in _stat_ as a <code>Fixnum</code>. Poking
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* around in these bits is platform dependent.
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*
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* fork { exit 0xab } #=> 26566
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* Process.wait #=> 26566
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* sprintf('%04x', $?.to_i) #=> "ab00"
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*/
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static VALUE
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pst_to_i(VALUE st)
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{
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return rb_iv_get(st, "status");
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}
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#define PST2INT(st) NUM2INT(pst_to_i(st))
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/*
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* call-seq:
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* stat.pid => fixnum
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*
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* Returns the process ID that this status object represents.
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*
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* fork { exit } #=> 26569
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* Process.wait #=> 26569
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* $?.pid #=> 26569
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*/
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static VALUE
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pst_pid(VALUE st)
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{
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return rb_attr_get(st, rb_intern("pid"));
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}
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static void
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pst_message(VALUE str, rb_pid_t pid, int status)
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{
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rb_str_catf(str, "pid %ld", (long)pid);
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if (WIFSTOPPED(status)) {
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int stopsig = WSTOPSIG(status);
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const char *signame = ruby_signal_name(stopsig);
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if (signame) {
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rb_str_catf(str, " stopped SIG%s (signal %d)", signame, stopsig);
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}
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else {
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rb_str_catf(str, " stopped signal %d", stopsig);
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}
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}
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if (WIFSIGNALED(status)) {
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int termsig = WTERMSIG(status);
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const char *signame = ruby_signal_name(termsig);
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if (signame) {
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rb_str_catf(str, " SIG%s (signal %d)", signame, termsig);
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}
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else {
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rb_str_catf(str, " signal %d", termsig);
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}
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}
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if (WIFEXITED(status)) {
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rb_str_catf(str, " exit %d", WEXITSTATUS(status));
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}
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#ifdef WCOREDUMP
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if (WCOREDUMP(status)) {
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rb_str_cat2(str, " (core dumped)");
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}
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#endif
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}
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/*
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* call-seq:
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* stat.to_s => string
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*
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* Show pid and exit status as a string.
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*/
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static VALUE
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pst_to_s(VALUE st)
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{
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rb_pid_t pid;
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int status;
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VALUE str;
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pid = NUM2LONG(pst_pid(st));
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status = PST2INT(st);
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str = rb_str_buf_new(0);
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pst_message(str, pid, status);
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return str;
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}
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/*
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* call-seq:
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* stat.inspect => string
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*
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* Override the inspection method.
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*/
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static VALUE
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pst_inspect(VALUE st)
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{
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rb_pid_t pid;
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int status;
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VALUE vpid, str;
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vpid = pst_pid(st);
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if (NIL_P(vpid)) {
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return rb_sprintf("#<%s: uninitialized>", rb_class2name(CLASS_OF(st)));
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}
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pid = NUM2LONG(vpid);
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status = PST2INT(st);
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str = rb_sprintf("#<%s: ", rb_class2name(CLASS_OF(st)));
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pst_message(str, pid, status);
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rb_str_cat2(str, ">");
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return str;
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}
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/*
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* call-seq:
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* stat == other => true or false
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*
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* Returns +true+ if the integer value of _stat_
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* equals <em>other</em>.
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*/
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static VALUE
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pst_equal(VALUE st1, VALUE st2)
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{
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if (st1 == st2) return Qtrue;
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return rb_equal(pst_to_i(st1), st2);
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}
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/*
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* call-seq:
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* stat & num => fixnum
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*
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* Logical AND of the bits in _stat_ with <em>num</em>.
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*
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* fork { exit 0x37 }
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* Process.wait
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* sprintf('%04x', $?.to_i) #=> "3700"
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* sprintf('%04x', $? & 0x1e00) #=> "1600"
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*/
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static VALUE
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pst_bitand(VALUE st1, VALUE st2)
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{
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int status = PST2INT(st1) & NUM2INT(st2);
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return INT2NUM(status);
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}
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/*
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* call-seq:
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* stat >> num => fixnum
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*
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* Shift the bits in _stat_ right <em>num</em> places.
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*
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* fork { exit 99 } #=> 26563
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* Process.wait #=> 26563
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* $?.to_i #=> 25344
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* $? >> 8 #=> 99
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*/
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static VALUE
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pst_rshift(VALUE st1, VALUE st2)
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{
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int status = PST2INT(st1) >> NUM2INT(st2);
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return INT2NUM(status);
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}
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/*
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* call-seq:
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* stat.stopped? => true or false
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*
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* Returns +true+ if this process is stopped. This is only
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* returned if the corresponding <code>wait</code> call had the
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* <code>WUNTRACED</code> flag set.
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*/
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static VALUE
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pst_wifstopped(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFSTOPPED(status))
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return Qtrue;
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else
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return Qfalse;
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}
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/*
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* call-seq:
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* stat.stopsig => fixnum or nil
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*
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* Returns the number of the signal that caused _stat_ to stop
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* (or +nil+ if self is not stopped).
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*/
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static VALUE
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pst_wstopsig(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFSTOPPED(status))
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return INT2NUM(WSTOPSIG(status));
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return Qnil;
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}
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/*
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* call-seq:
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* stat.signaled? => true or false
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*
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* Returns +true+ if _stat_ terminated because of
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* an uncaught signal.
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*/
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static VALUE
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pst_wifsignaled(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFSIGNALED(status))
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return Qtrue;
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else
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return Qfalse;
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}
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/*
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* call-seq:
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* stat.termsig => fixnum or nil
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*
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* Returns the number of the signal that caused _stat_ to
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* terminate (or +nil+ if self was not terminated by an
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* uncaught signal).
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*/
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static VALUE
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pst_wtermsig(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFSIGNALED(status))
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return INT2NUM(WTERMSIG(status));
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return Qnil;
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}
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/*
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* call-seq:
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* stat.exited? => true or false
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*
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* Returns +true+ if _stat_ exited normally (for
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* example using an <code>exit()</code> call or finishing the
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* program).
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*/
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static VALUE
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pst_wifexited(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFEXITED(status))
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return Qtrue;
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else
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return Qfalse;
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}
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/*
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* call-seq:
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* stat.exitstatus => fixnum or nil
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*
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* Returns the least significant eight bits of the return code of
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* _stat_. Only available if <code>exited?</code> is
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* +true+.
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*
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* fork { } #=> 26572
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* Process.wait #=> 26572
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* $?.exited? #=> true
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* $?.exitstatus #=> 0
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*
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* fork { exit 99 } #=> 26573
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* Process.wait #=> 26573
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* $?.exited? #=> true
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* $?.exitstatus #=> 99
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*/
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static VALUE
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pst_wexitstatus(VALUE st)
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{
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int status = PST2INT(st);
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if (WIFEXITED(status))
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return INT2NUM(WEXITSTATUS(status));
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return Qnil;
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}
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/*
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* call-seq:
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* stat.success? => true, false or nil
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*
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* Returns +true+ if _stat_ is successful, +false+ if not.
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* Returns +nil+ if <code>exited?</code> is not +true+.
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*/
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static VALUE
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pst_success_p(VALUE st)
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{
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int status = PST2INT(st);
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if (!WIFEXITED(status))
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return Qnil;
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return WEXITSTATUS(status) == EXIT_SUCCESS ? Qtrue : Qfalse;
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}
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/*
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* call-seq:
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* stat.coredump? => true or false
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*
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* Returns +true+ if _stat_ generated a coredump
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* when it terminated. Not available on all platforms.
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*/
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static VALUE
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pst_wcoredump(VALUE st)
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{
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|
#ifdef WCOREDUMP
|
|
int status = PST2INT(st);
|
|
|
|
if (WCOREDUMP(status))
|
|
return Qtrue;
|
|
else
|
|
return Qfalse;
|
|
#else
|
|
return Qfalse;
|
|
#endif
|
|
}
|
|
|
|
#if !defined(HAVE_WAITPID) && !defined(HAVE_WAIT4)
|
|
#define NO_WAITPID
|
|
static st_table *pid_tbl;
|
|
#else
|
|
struct waitpid_arg {
|
|
rb_pid_t pid;
|
|
int *st;
|
|
int flags;
|
|
};
|
|
#endif
|
|
|
|
static VALUE
|
|
rb_waitpid_blocking(void *data)
|
|
{
|
|
rb_pid_t result;
|
|
#ifndef NO_WAITPID
|
|
struct waitpid_arg *arg = data;
|
|
#endif
|
|
|
|
TRAP_BEG;
|
|
#if defined NO_WAITPID
|
|
result = wait(data);
|
|
#elif defined HAVE_WAITPID
|
|
result = waitpid(arg->pid, arg->st, arg->flags);
|
|
#else /* HAVE_WAIT4 */
|
|
result = wait4(arg->pid, arg->st, arg->flags, NULL);
|
|
#endif
|
|
TRAP_END;
|
|
return (VALUE)result;
|
|
}
|
|
|
|
rb_pid_t
|
|
rb_waitpid(rb_pid_t pid, int *st, int flags)
|
|
{
|
|
rb_pid_t result;
|
|
#ifndef NO_WAITPID
|
|
struct waitpid_arg arg;
|
|
|
|
arg.pid = pid;
|
|
arg.st = st;
|
|
arg.flags = flags;
|
|
result = (rb_pid_t)rb_thread_blocking_region(rb_waitpid_blocking, &arg,
|
|
RB_UBF_DFL, 0);
|
|
if (result < 0) {
|
|
#if 0
|
|
if (errno == EINTR) {
|
|
rb_thread_polling();
|
|
goto retry;
|
|
}
|
|
#endif
|
|
return -1;
|
|
}
|
|
#else /* NO_WAITPID */
|
|
if (pid_tbl && st_lookup(pid_tbl, pid, (st_data_t *)st)) {
|
|
rb_last_status_set(*st, pid);
|
|
st_delete(pid_tbl, (st_data_t*)&pid, NULL);
|
|
return pid;
|
|
}
|
|
|
|
if (flags) {
|
|
rb_raise(rb_eArgError, "can't do waitpid with flags");
|
|
}
|
|
|
|
for (;;) {
|
|
result = (rb_pid_t)rb_thread_blocking_region(rb_waitpid_blocking,
|
|
st, RB_UBF_DFL);
|
|
if (result < 0) {
|
|
if (errno == EINTR) {
|
|
rb_thread_schedule();
|
|
continue;
|
|
}
|
|
return -1;
|
|
}
|
|
if (result == pid) {
|
|
break;
|
|
}
|
|
if (!pid_tbl)
|
|
pid_tbl = st_init_numtable();
|
|
st_insert(pid_tbl, pid, (st_data_t)st);
|
|
if (!rb_thread_alone()) rb_thread_schedule();
|
|
}
|
|
#endif
|
|
if (result > 0) {
|
|
rb_last_status_set(*st, result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#ifdef NO_WAITPID
|
|
struct wait_data {
|
|
rb_pid_t pid;
|
|
int status;
|
|
};
|
|
|
|
static int
|
|
wait_each(rb_pid_t pid, int status, struct wait_data *data)
|
|
{
|
|
if (data->status != -1) return ST_STOP;
|
|
|
|
data->pid = pid;
|
|
data->status = status;
|
|
return ST_DELETE;
|
|
}
|
|
|
|
static int
|
|
waitall_each(rb_pid_t pid, int status, VALUE ary)
|
|
{
|
|
rb_last_status_set(status, pid);
|
|
rb_ary_push(ary, rb_assoc_new(PIDT2NUM(pid), rb_last_status_get());
|
|
return ST_DELETE;
|
|
}
|
|
#endif
|
|
|
|
|
|
/* [MG]:FIXME: I wasn't sure how this should be done, since ::wait()
|
|
has historically been documented as if it didn't take any arguments
|
|
despite the fact that it's just an alias for ::waitpid(). The way I
|
|
have it below is more truthful, but a little confusing.
|
|
|
|
I also took the liberty of putting in the pid values, as they're
|
|
pretty useful, and it looked as if the original 'ri' output was
|
|
supposed to contain them after "[...]depending on the value of
|
|
aPid:".
|
|
|
|
The 'ansi' and 'bs' formats of the ri output don't display the
|
|
definition list for some reason, but the plain text one does.
|
|
*/
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.wait() => fixnum
|
|
* Process.wait(pid=-1, flags=0) => fixnum
|
|
* Process.waitpid(pid=-1, flags=0) => fixnum
|
|
*
|
|
* Waits for a child process to exit, returns its process id, and
|
|
* sets <code>$?</code> to a <code>Process::Status</code> object
|
|
* containing information on that process. Which child it waits on
|
|
* depends on the value of _pid_:
|
|
*
|
|
* > 0:: Waits for the child whose process ID equals _pid_.
|
|
*
|
|
* 0:: Waits for any child whose process group ID equals that of the
|
|
* calling process.
|
|
*
|
|
* -1:: Waits for any child process (the default if no _pid_ is
|
|
* given).
|
|
*
|
|
* < -1:: Waits for any child whose process group ID equals the absolute
|
|
* value of _pid_.
|
|
*
|
|
* The _flags_ argument may be a logical or of the flag values
|
|
* <code>Process::WNOHANG</code> (do not block if no child available)
|
|
* or <code>Process::WUNTRACED</code> (return stopped children that
|
|
* haven't been reported). Not all flags are available on all
|
|
* platforms, but a flag value of zero will work on all platforms.
|
|
*
|
|
* Calling this method raises a <code>SystemError</code> if there are
|
|
* no child processes. Not available on all platforms.
|
|
*
|
|
* include Process
|
|
* fork { exit 99 } #=> 27429
|
|
* wait #=> 27429
|
|
* $?.exitstatus #=> 99
|
|
*
|
|
* pid = fork { sleep 3 } #=> 27440
|
|
* Time.now #=> 2008-03-08 19:56:16 +0900
|
|
* waitpid(pid, Process::WNOHANG) #=> nil
|
|
* Time.now #=> 2008-03-08 19:56:16 +0900
|
|
* waitpid(pid, 0) #=> 27440
|
|
* Time.now #=> 2008-03-08 19:56:19 +0900
|
|
*/
|
|
|
|
static VALUE
|
|
proc_wait(int argc, VALUE *argv)
|
|
{
|
|
VALUE vpid, vflags;
|
|
rb_pid_t pid;
|
|
int flags, status;
|
|
|
|
rb_secure(2);
|
|
flags = 0;
|
|
if (argc == 0) {
|
|
pid = -1;
|
|
}
|
|
else {
|
|
rb_scan_args(argc, argv, "02", &vpid, &vflags);
|
|
pid = NUM2PIDT(vpid);
|
|
if (argc == 2 && !NIL_P(vflags)) {
|
|
flags = NUM2UINT(vflags);
|
|
}
|
|
}
|
|
if ((pid = rb_waitpid(pid, &status, flags)) < 0)
|
|
rb_sys_fail(0);
|
|
if (pid == 0) {
|
|
rb_last_status_clear();
|
|
return Qnil;
|
|
}
|
|
return PIDT2NUM(pid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.wait2(pid=-1, flags=0) => [pid, status]
|
|
* Process.waitpid2(pid=-1, flags=0) => [pid, status]
|
|
*
|
|
* Waits for a child process to exit (see Process::waitpid for exact
|
|
* semantics) and returns an array containing the process id and the
|
|
* exit status (a <code>Process::Status</code> object) of that
|
|
* child. Raises a <code>SystemError</code> if there are no child
|
|
* processes.
|
|
*
|
|
* Process.fork { exit 99 } #=> 27437
|
|
* pid, status = Process.wait2
|
|
* pid #=> 27437
|
|
* status.exitstatus #=> 99
|
|
*/
|
|
|
|
static VALUE
|
|
proc_wait2(int argc, VALUE *argv)
|
|
{
|
|
VALUE pid = proc_wait(argc, argv);
|
|
if (NIL_P(pid)) return Qnil;
|
|
return rb_assoc_new(pid, rb_last_status_get());
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.waitall => [ [pid1,status1], ...]
|
|
*
|
|
* Waits for all children, returning an array of
|
|
* _pid_/_status_ pairs (where _status_ is a
|
|
* <code>Process::Status</code> object).
|
|
*
|
|
* fork { sleep 0.2; exit 2 } #=> 27432
|
|
* fork { sleep 0.1; exit 1 } #=> 27433
|
|
* fork { exit 0 } #=> 27434
|
|
* p Process.waitall
|
|
*
|
|
* <em>produces</em>:
|
|
*
|
|
* [[27434, #<Process::Status: pid=27434,exited(0)>],
|
|
* [27433, #<Process::Status: pid=27433,exited(1)>],
|
|
* [27432, #<Process::Status: pid=27432,exited(2)>]]
|
|
*/
|
|
|
|
static VALUE
|
|
proc_waitall(void)
|
|
{
|
|
VALUE result;
|
|
rb_pid_t pid;
|
|
int status;
|
|
|
|
rb_secure(2);
|
|
result = rb_ary_new();
|
|
#ifdef NO_WAITPID
|
|
if (pid_tbl) {
|
|
st_foreach(pid_tbl, waitall_each, result);
|
|
}
|
|
#else
|
|
rb_last_status_clear();
|
|
#endif
|
|
|
|
for (pid = -1;;) {
|
|
#ifdef NO_WAITPID
|
|
pid = wait(&status);
|
|
#else
|
|
pid = rb_waitpid(-1, &status, 0);
|
|
#endif
|
|
if (pid == -1) {
|
|
if (errno == ECHILD)
|
|
break;
|
|
#ifdef NO_WAITPID
|
|
if (errno == EINTR) {
|
|
rb_thread_schedule();
|
|
continue;
|
|
}
|
|
#endif
|
|
rb_sys_fail(0);
|
|
}
|
|
#ifdef NO_WAITPID
|
|
rb_last_status_set(status, pid);
|
|
#endif
|
|
rb_ary_push(result, rb_assoc_new(PIDT2NUM(pid), rb_last_status_get()));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static inline ID
|
|
id_pid(void)
|
|
{
|
|
ID pid;
|
|
CONST_ID(pid, "pid");
|
|
return pid;
|
|
}
|
|
|
|
static VALUE
|
|
detach_process_pid(VALUE thread)
|
|
{
|
|
return rb_thread_local_aref(thread, id_pid());
|
|
}
|
|
|
|
static VALUE
|
|
detach_process_watcher(void *arg)
|
|
{
|
|
rb_pid_t cpid, pid = (rb_pid_t)(VALUE)arg;
|
|
int status;
|
|
|
|
while ((cpid = rb_waitpid(pid, &status, 0)) == 0) {
|
|
/* wait while alive */
|
|
}
|
|
return rb_last_status_get();
|
|
}
|
|
|
|
VALUE
|
|
rb_detach_process(rb_pid_t pid)
|
|
{
|
|
VALUE watcher = rb_thread_create(detach_process_watcher, (void*)(VALUE)pid);
|
|
rb_thread_local_aset(watcher, id_pid(), PIDT2NUM(pid));
|
|
rb_define_singleton_method(watcher, "pid", detach_process_pid, 0);
|
|
return watcher;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.detach(pid) => thread
|
|
*
|
|
* Some operating systems retain the status of terminated child
|
|
* processes until the parent collects that status (normally using
|
|
* some variant of <code>wait()</code>. If the parent never collects
|
|
* this status, the child stays around as a <em>zombie</em> process.
|
|
* <code>Process::detach</code> prevents this by setting up a
|
|
* separate Ruby thread whose sole job is to reap the status of the
|
|
* process _pid_ when it terminates. Use <code>detach</code>
|
|
* only when you do not intent to explicitly wait for the child to
|
|
* terminate.
|
|
*
|
|
* The waiting thread returns the exit status of the detached process
|
|
* when it terminates, so you can use <code>Thread#join</code> to
|
|
* know the result. If specified _pid_ is not a valid child process
|
|
* ID, the thread returns +nil+ immediately.
|
|
*
|
|
* In this first example, we don't reap the first child process, so
|
|
* it appears as a zombie in the process status display.
|
|
*
|
|
* p1 = fork { sleep 0.1 }
|
|
* p2 = fork { sleep 0.2 }
|
|
* Process.waitpid(p2)
|
|
* sleep 2
|
|
* system("ps -ho pid,state -p #{p1}")
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* 27389 Z
|
|
*
|
|
* In the next example, <code>Process::detach</code> is used to reap
|
|
* the child automatically.
|
|
*
|
|
* p1 = fork { sleep 0.1 }
|
|
* p2 = fork { sleep 0.2 }
|
|
* Process.detach(p1)
|
|
* Process.waitpid(p2)
|
|
* sleep 2
|
|
* system("ps -ho pid,state -p #{p1}")
|
|
*
|
|
* <em>(produces no output)</em>
|
|
*/
|
|
|
|
static VALUE
|
|
proc_detach(VALUE obj, VALUE pid)
|
|
{
|
|
rb_secure(2);
|
|
return rb_detach_process(NUM2PIDT(pid));
|
|
}
|
|
|
|
#ifndef HAVE_STRING_H
|
|
char *strtok();
|
|
#endif
|
|
|
|
void rb_thread_stop_timer_thread(void);
|
|
void rb_thread_start_timer_thread(void);
|
|
void rb_thread_reset_timer_thread(void);
|
|
|
|
#define before_exec() \
|
|
(rb_enable_interrupt(), rb_thread_stop_timer_thread())
|
|
#define after_exec() \
|
|
(rb_thread_start_timer_thread(), rb_disable_interrupt())
|
|
|
|
#include "dln.h"
|
|
|
|
static void
|
|
security(const char *str)
|
|
{
|
|
if (rb_env_path_tainted()) {
|
|
if (rb_safe_level() > 0) {
|
|
rb_raise(rb_eSecurityError, "Insecure PATH - %s", str);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
proc_exec_v(char **argv, const char *prog)
|
|
{
|
|
char fbuf[MAXPATHLEN];
|
|
|
|
if (!prog)
|
|
prog = argv[0];
|
|
prog = dln_find_exe_r(prog, 0, fbuf, sizeof(fbuf));
|
|
if (!prog) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
#if (defined(MSDOS) && !defined(DJGPP)) || defined(__human68k__) || defined(__EMX__) || defined(OS2)
|
|
{
|
|
#if defined(__human68k__)
|
|
#define COMMAND "command.x"
|
|
#endif
|
|
#if defined(__EMX__) || defined(OS2) /* OS/2 emx */
|
|
#define COMMAND "cmd.exe"
|
|
#endif
|
|
#if (defined(MSDOS) && !defined(DJGPP))
|
|
#define COMMAND "command.com"
|
|
#endif
|
|
char *extension;
|
|
|
|
if ((extension = strrchr(prog, '.')) != NULL && STRCASECMP(extension, ".bat") == 0) {
|
|
char **new_argv;
|
|
char *p;
|
|
int n;
|
|
|
|
for (n = 0; argv[n]; n++)
|
|
/* no-op */;
|
|
new_argv = ALLOCA_N(char*, n + 2);
|
|
for (; n > 0; n--)
|
|
new_argv[n + 1] = argv[n];
|
|
new_argv[1] = strcpy(ALLOCA_N(char, strlen(argv[0]) + 1), argv[0]);
|
|
for (p = new_argv[1]; *p != '\0'; p++)
|
|
if (*p == '/')
|
|
*p = '\\';
|
|
new_argv[0] = COMMAND;
|
|
argv = new_argv;
|
|
prog = dln_find_exe_r(argv[0], 0, fbuf, sizeof(fbuf));
|
|
if (!prog) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
#endif /* MSDOS or __human68k__ or __EMX__ */
|
|
before_exec();
|
|
execv(prog, argv);
|
|
preserving_errno(after_exec());
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
rb_proc_exec_n(int argc, VALUE *argv, const char *prog)
|
|
{
|
|
char **args;
|
|
int i;
|
|
|
|
args = ALLOCA_N(char*, argc+1);
|
|
for (i=0; i<argc; i++) {
|
|
args[i] = RSTRING_PTR(argv[i]);
|
|
}
|
|
args[i] = 0;
|
|
if (args[0]) {
|
|
return proc_exec_v(args, prog);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
rb_proc_exec(const char *str)
|
|
{
|
|
#ifndef _WIN32
|
|
const char *s = str;
|
|
char *ss, *t;
|
|
char **argv, **a;
|
|
#endif
|
|
|
|
while (*str && ISSPACE(*str))
|
|
str++;
|
|
|
|
#ifdef _WIN32
|
|
before_exec();
|
|
rb_w32_spawn(P_OVERLAY, (char *)str, 0);
|
|
after_exec();
|
|
#else
|
|
for (s=str; *s; s++) {
|
|
if (ISSPACE(*s)) {
|
|
const char *p, *nl = NULL;
|
|
for (p = s; ISSPACE(*p); p++) {
|
|
if (*p == '\n') nl = p;
|
|
}
|
|
if (!*p) break;
|
|
if (nl) s = nl;
|
|
}
|
|
if (*s != ' ' && !ISALPHA(*s) && strchr("*?{}[]<>()~&|\\$;'`\"\n",*s)) {
|
|
#if defined(MSDOS)
|
|
int status;
|
|
before_exec();
|
|
status = system(str);
|
|
after_exec();
|
|
if (status != -1)
|
|
exit(status);
|
|
#elif defined(__human68k__) || defined(__CYGWIN32__) || defined(__EMX__)
|
|
char fbuf[MAXPATHLEN];
|
|
char *shell = dln_find_exe_r("sh", 0, fbuf, sizeof(fbuf));
|
|
int status = -1;
|
|
before_exec();
|
|
if (shell)
|
|
execl(shell, "sh", "-c", str, (char *) NULL);
|
|
else
|
|
status = system(str);
|
|
after_exec();
|
|
if (status != -1)
|
|
exit(status);
|
|
#else
|
|
before_exec();
|
|
execl("/bin/sh", "sh", "-c", str, (char *)NULL);
|
|
preserving_errno(after_exec());
|
|
#endif
|
|
return -1;
|
|
}
|
|
}
|
|
a = argv = ALLOCA_N(char*, (s-str)/2+2);
|
|
ss = ALLOCA_N(char, s-str+1);
|
|
memcpy(ss, str, s-str);
|
|
ss[s-str] = '\0';
|
|
if ((*a++ = strtok(ss, " \t")) != 0) {
|
|
while ((t = strtok(NULL, " \t")) != 0) {
|
|
*a++ = t;
|
|
}
|
|
*a = NULL;
|
|
}
|
|
if (argv[0]) {
|
|
return proc_exec_v(argv, 0);
|
|
}
|
|
errno = ENOENT;
|
|
#endif /* _WIN32 */
|
|
return -1;
|
|
}
|
|
|
|
#if defined(_WIN32)
|
|
#define HAVE_SPAWNV 1
|
|
#endif
|
|
|
|
#if !defined(HAVE_FORK) && defined(HAVE_SPAWNV)
|
|
#if defined(_WIN32)
|
|
#define proc_spawn_v(argv, prog) rb_w32_aspawn(P_NOWAIT, prog, argv)
|
|
#else
|
|
static rb_pid_t
|
|
proc_spawn_v(char **argv, char *prog)
|
|
{
|
|
char fbuf[MAXPATHLEN];
|
|
char *extension;
|
|
rb_pid_t status;
|
|
|
|
if (!prog)
|
|
prog = argv[0];
|
|
security(prog);
|
|
prog = dln_find_exe_r(prog, 0, fbuf, sizeof(fbuf));
|
|
if (!prog)
|
|
return -1;
|
|
|
|
#if defined(__human68k__)
|
|
if ((extension = strrchr(prog, '.')) != NULL && STRCASECMP(extension, ".bat") == 0) {
|
|
char **new_argv;
|
|
char *p;
|
|
int n;
|
|
|
|
for (n = 0; argv[n]; n++)
|
|
/* no-op */;
|
|
new_argv = ALLOCA_N(char*, n + 2);
|
|
for (; n > 0; n--)
|
|
new_argv[n + 1] = argv[n];
|
|
new_argv[1] = strcpy(ALLOCA_N(char, strlen(argv[0]) + 1), argv[0]);
|
|
for (p = new_argv[1]; *p != '\0'; p++)
|
|
if (*p == '/')
|
|
*p = '\\';
|
|
new_argv[0] = COMMAND;
|
|
argv = new_argv;
|
|
prog = dln_find_exe_r(argv[0], 0, fbuf, sizeof(fbuf));
|
|
if (!prog) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
before_exec();
|
|
status = spawnv(P_WAIT, prog, argv);
|
|
rb_last_status_set(status == -1 ? 127 : status, 0);
|
|
after_exec();
|
|
return status;
|
|
}
|
|
#endif
|
|
|
|
static rb_pid_t
|
|
proc_spawn_n(int argc, VALUE *argv, VALUE prog)
|
|
{
|
|
char **args;
|
|
int i;
|
|
|
|
args = ALLOCA_N(char*, argc + 1);
|
|
for (i = 0; i < argc; i++) {
|
|
args[i] = RSTRING_PTR(argv[i]);
|
|
}
|
|
args[i] = (char*) 0;
|
|
if (args[0])
|
|
return proc_spawn_v(args, prog ? RSTRING_PTR(prog) : 0);
|
|
return -1;
|
|
}
|
|
|
|
#if defined(_WIN32)
|
|
#define proc_spawn(str) rb_w32_spawn(P_NOWAIT, str, 0)
|
|
#else
|
|
static rb_pid_t
|
|
proc_spawn(char *str)
|
|
{
|
|
char fbuf[MAXPATHLEN];
|
|
char *s, *t;
|
|
char **argv, **a;
|
|
rb_pid_t status;
|
|
|
|
for (s = str; *s; s++) {
|
|
if (*s != ' ' && !ISALPHA(*s) && strchr("*?{}[]<>()~&|\\$;'`\"\n",*s)) {
|
|
char *shell = dln_find_exe_r("sh", 0, fbuf, sizeof(fbuf));
|
|
before_exec();
|
|
status = shell?spawnl(P_WAIT,shell,"sh","-c",str,(char*)NULL):system(str);
|
|
rb_last_status_set(status == -1 ? 127 : status, 0);
|
|
after_exec();
|
|
return status;
|
|
}
|
|
}
|
|
a = argv = ALLOCA_N(char*, (s - str) / 2 + 2);
|
|
s = ALLOCA_N(char, s - str + 1);
|
|
strcpy(s, str);
|
|
if (*a++ = strtok(s, " \t")) {
|
|
while (t = strtok(NULL, " \t"))
|
|
*a++ = t;
|
|
*a = NULL;
|
|
}
|
|
return argv[0] ? proc_spawn_v(argv, 0) : -1;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
static VALUE
|
|
hide_obj(VALUE obj)
|
|
{
|
|
RBASIC(obj)->klass = 0;
|
|
return obj;
|
|
}
|
|
|
|
enum {
|
|
EXEC_OPTION_PGROUP,
|
|
EXEC_OPTION_RLIMIT,
|
|
EXEC_OPTION_UNSETENV_OTHERS,
|
|
EXEC_OPTION_ENV,
|
|
EXEC_OPTION_CHDIR,
|
|
EXEC_OPTION_UMASK,
|
|
EXEC_OPTION_DUP2,
|
|
EXEC_OPTION_CLOSE,
|
|
EXEC_OPTION_OPEN,
|
|
EXEC_OPTION_CLOSE_OTHERS
|
|
};
|
|
|
|
static VALUE
|
|
check_exec_redirect_fd(VALUE v)
|
|
{
|
|
VALUE tmp;
|
|
int fd;
|
|
if (FIXNUM_P(v)) {
|
|
fd = FIX2INT(v);
|
|
}
|
|
else if (!NIL_P(tmp = rb_check_convert_type(v, T_FILE, "IO", "to_io"))) {
|
|
rb_io_t *fptr;
|
|
GetOpenFile(tmp, fptr);
|
|
if (fptr->tied_io_for_writing)
|
|
rb_raise(rb_eArgError, "duplex IO redirection");
|
|
fd = fptr->fd;
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong exec redirect");
|
|
}
|
|
if (fd < 0) {
|
|
rb_raise(rb_eArgError, "negative file descriptor");
|
|
}
|
|
return INT2FIX(fd);
|
|
}
|
|
|
|
static void
|
|
check_exec_redirect(VALUE key, VALUE val, VALUE options)
|
|
{
|
|
int index;
|
|
VALUE ary, param;
|
|
VALUE path, flags, perm;
|
|
ID id;
|
|
|
|
switch (TYPE(val)) {
|
|
case T_SYMBOL:
|
|
id = SYM2ID(val);
|
|
if (id == rb_intern("close")) {
|
|
index = EXEC_OPTION_CLOSE;
|
|
param = Qnil;
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong exec redirect symbol: %s",
|
|
rb_id2name(id));
|
|
}
|
|
break;
|
|
|
|
case T_FILE:
|
|
val = check_exec_redirect_fd(val);
|
|
/* fall through */
|
|
case T_FIXNUM:
|
|
index = EXEC_OPTION_DUP2;
|
|
param = val;
|
|
break;
|
|
|
|
case T_ARRAY:
|
|
index = EXEC_OPTION_OPEN;
|
|
path = rb_ary_entry(val, 0);
|
|
FilePathValue(path);
|
|
flags = rb_ary_entry(val, 1);
|
|
if (NIL_P(flags))
|
|
flags = INT2NUM(O_RDONLY);
|
|
else if (TYPE(flags) == T_STRING)
|
|
flags = INT2NUM(rb_io_mode_modenum(StringValueCStr(flags)));
|
|
else
|
|
flags = rb_to_int(flags);
|
|
perm = rb_ary_entry(val, 2);
|
|
perm = NIL_P(perm) ? INT2FIX(0644) : rb_to_int(perm);
|
|
param = hide_obj(rb_ary_new3(3, hide_obj(rb_str_dup(path)),
|
|
flags, perm));
|
|
break;
|
|
|
|
case T_STRING:
|
|
index = EXEC_OPTION_OPEN;
|
|
path = val;
|
|
FilePathValue(path);
|
|
if ((FIXNUM_P(key) && (FIX2INT(key) == 1 || FIX2INT(key) == 2)) ||
|
|
key == rb_stdout || key == rb_stderr)
|
|
flags = INT2NUM(O_WRONLY|O_CREAT|O_TRUNC);
|
|
else
|
|
flags = INT2NUM(O_RDONLY);
|
|
perm = INT2FIX(0644);
|
|
param = hide_obj(rb_ary_new3(3, hide_obj(rb_str_dup(path)),
|
|
flags, perm));
|
|
break;
|
|
|
|
default:
|
|
rb_raise(rb_eArgError, "wrong exec redirect action");
|
|
}
|
|
|
|
ary = rb_ary_entry(options, index);
|
|
if (NIL_P(ary)) {
|
|
ary = hide_obj(rb_ary_new());
|
|
rb_ary_store(options, index, ary);
|
|
}
|
|
if (TYPE(key) != T_ARRAY) {
|
|
VALUE fd = check_exec_redirect_fd(key);
|
|
rb_ary_push(ary, hide_obj(rb_assoc_new(fd, param)));
|
|
}
|
|
else {
|
|
int i, n=0;
|
|
for (i = 0 ; i < RARRAY_LEN(key); i++) {
|
|
VALUE v = RARRAY_PTR(key)[i];
|
|
VALUE fd = check_exec_redirect_fd(v);
|
|
rb_ary_push(ary, hide_obj(rb_assoc_new(fd, param)));
|
|
n++;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef RLIM2NUM
|
|
static int rlimit_type_by_lname(const char *name);
|
|
#endif
|
|
|
|
int
|
|
rb_exec_arg_addopt(struct rb_exec_arg *e, VALUE key, VALUE val)
|
|
{
|
|
VALUE options = e->options;
|
|
ID id;
|
|
#ifdef RLIM2NUM
|
|
int rtype;
|
|
#endif
|
|
|
|
rb_secure(2);
|
|
|
|
switch (TYPE(key)) {
|
|
case T_SYMBOL:
|
|
id = SYM2ID(key);
|
|
#ifdef HAVE_SETPGID
|
|
if (id == rb_intern("pgroup")) {
|
|
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_PGROUP))) {
|
|
rb_raise(rb_eArgError, "pgroup option specified twice");
|
|
}
|
|
if (!RTEST(val))
|
|
val = Qfalse;
|
|
else if (val == Qtrue)
|
|
val = INT2FIX(0);
|
|
else {
|
|
pid_t pgroup = NUM2PIDT(val);
|
|
if (pgroup < 0) {
|
|
rb_raise(rb_eArgError, "negative process group ID : %ld", (long)pgroup);
|
|
}
|
|
val = PIDT2NUM(pgroup);
|
|
}
|
|
rb_ary_store(options, EXEC_OPTION_PGROUP, val);
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef RLIM2NUM
|
|
if (strncmp("rlimit_", rb_id2name(id), 7) == 0 &&
|
|
(rtype = rlimit_type_by_lname(rb_id2name(id)+7)) != -1) {
|
|
VALUE ary = rb_ary_entry(options, EXEC_OPTION_RLIMIT);
|
|
VALUE tmp, softlim, hardlim;
|
|
if (NIL_P(ary)) {
|
|
ary = hide_obj(rb_ary_new());
|
|
rb_ary_store(options, EXEC_OPTION_RLIMIT, ary);
|
|
}
|
|
tmp = rb_check_array_type(val);
|
|
if (!NIL_P(tmp)) {
|
|
if (RARRAY_LEN(tmp) == 1)
|
|
softlim = hardlim = rb_to_int(rb_ary_entry(tmp, 0));
|
|
else if (RARRAY_LEN(tmp) == 2) {
|
|
softlim = rb_to_int(rb_ary_entry(tmp, 0));
|
|
hardlim = rb_to_int(rb_ary_entry(tmp, 1));
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong exec rlimit option");
|
|
}
|
|
}
|
|
else {
|
|
softlim = hardlim = rb_to_int(val);
|
|
}
|
|
tmp = hide_obj(rb_ary_new3(3, INT2NUM(rtype), softlim, hardlim));
|
|
rb_ary_push(ary, tmp);
|
|
}
|
|
else
|
|
#endif
|
|
if (id == rb_intern("unsetenv_others")) {
|
|
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_UNSETENV_OTHERS))) {
|
|
rb_raise(rb_eArgError, "unsetenv_others option specified twice");
|
|
}
|
|
val = RTEST(val) ? Qtrue : Qfalse;
|
|
rb_ary_store(options, EXEC_OPTION_UNSETENV_OTHERS, val);
|
|
}
|
|
else if (id == rb_intern("chdir")) {
|
|
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_CHDIR))) {
|
|
rb_raise(rb_eArgError, "chdir option specified twice");
|
|
}
|
|
FilePathValue(val);
|
|
rb_ary_store(options, EXEC_OPTION_CHDIR,
|
|
hide_obj(rb_str_dup(val)));
|
|
}
|
|
else if (id == rb_intern("umask")) {
|
|
mode_t cmask = NUM2LONG(val);
|
|
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_UMASK))) {
|
|
rb_raise(rb_eArgError, "umask option specified twice");
|
|
}
|
|
rb_ary_store(options, EXEC_OPTION_UMASK, LONG2NUM(cmask));
|
|
}
|
|
else if (id == rb_intern("close_others")) {
|
|
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_CLOSE_OTHERS))) {
|
|
rb_raise(rb_eArgError, "close_others option specified twice");
|
|
}
|
|
val = RTEST(val) ? Qtrue : Qfalse;
|
|
rb_ary_store(options, EXEC_OPTION_CLOSE_OTHERS, val);
|
|
}
|
|
else if (id == rb_intern("in")) {
|
|
key = INT2FIX(0);
|
|
goto redirect;
|
|
}
|
|
else if (id == rb_intern("out")) {
|
|
key = INT2FIX(1);
|
|
goto redirect;
|
|
}
|
|
else if (id == rb_intern("err")) {
|
|
key = INT2FIX(2);
|
|
goto redirect;
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong exec option symbol: %s",
|
|
rb_id2name(id));
|
|
}
|
|
break;
|
|
|
|
case T_FIXNUM:
|
|
case T_FILE:
|
|
case T_ARRAY:
|
|
redirect:
|
|
check_exec_redirect(key, val, options);
|
|
break;
|
|
|
|
default:
|
|
rb_raise(rb_eArgError, "wrong exec option");
|
|
}
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static int
|
|
check_exec_options_i(st_data_t st_key, st_data_t st_val, st_data_t arg)
|
|
{
|
|
VALUE key = (VALUE)st_key;
|
|
VALUE val = (VALUE)st_val;
|
|
struct rb_exec_arg *e = (struct rb_exec_arg *)arg;
|
|
return rb_exec_arg_addopt(e, key, val);
|
|
}
|
|
|
|
static VALUE
|
|
check_exec_fds(VALUE options)
|
|
{
|
|
VALUE h = rb_hash_new();
|
|
VALUE ary;
|
|
int index, i;
|
|
int maxhint = -1;
|
|
|
|
for (index = EXEC_OPTION_DUP2; index <= EXEC_OPTION_OPEN; index++) {
|
|
ary = rb_ary_entry(options, index);
|
|
if (NIL_P(ary))
|
|
continue;
|
|
for (i = 0; i < RARRAY_LEN(ary); i++) {
|
|
VALUE elt = RARRAY_PTR(ary)[i];
|
|
int fd = FIX2INT(RARRAY_PTR(elt)[0]);
|
|
if (RTEST(rb_hash_lookup(h, INT2FIX(fd)))) {
|
|
rb_raise(rb_eArgError, "fd %d specified twice", fd);
|
|
}
|
|
rb_hash_aset(h, INT2FIX(fd), Qtrue);
|
|
if (maxhint < fd)
|
|
maxhint = fd;
|
|
if (index == EXEC_OPTION_DUP2) {
|
|
fd = FIX2INT(RARRAY_PTR(elt)[1]);
|
|
if (maxhint < fd)
|
|
maxhint = fd;
|
|
}
|
|
}
|
|
}
|
|
if (rb_ary_entry(options, EXEC_OPTION_CLOSE_OTHERS) != Qfalse) {
|
|
rb_ary_store(options, EXEC_OPTION_CLOSE_OTHERS, INT2FIX(maxhint));
|
|
}
|
|
return h;
|
|
}
|
|
|
|
static void
|
|
rb_check_exec_options(VALUE opthash, struct rb_exec_arg *e)
|
|
{
|
|
if (RHASH_EMPTY_P(opthash))
|
|
return;
|
|
st_foreach(RHASH_TBL(opthash), check_exec_options_i, (st_data_t)e);
|
|
}
|
|
|
|
static int
|
|
check_exec_env_i(st_data_t st_key, st_data_t st_val, st_data_t arg)
|
|
{
|
|
VALUE key = (VALUE)st_key;
|
|
VALUE val = (VALUE)st_val;
|
|
VALUE env = (VALUE)arg;
|
|
char *k;
|
|
|
|
k = StringValueCStr(key);
|
|
if (strchr(k, '='))
|
|
rb_raise(rb_eArgError, "environment name contains a equal : %s", k);
|
|
|
|
if (!NIL_P(val))
|
|
StringValueCStr(val);
|
|
|
|
rb_ary_push(env, hide_obj(rb_assoc_new(key, val)));
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static VALUE
|
|
rb_check_exec_env(VALUE hash)
|
|
{
|
|
VALUE env;
|
|
|
|
env = hide_obj(rb_ary_new());
|
|
st_foreach(RHASH_TBL(hash), check_exec_env_i, (st_data_t)env);
|
|
|
|
return env;
|
|
}
|
|
|
|
static VALUE
|
|
rb_check_argv(int argc, VALUE *argv)
|
|
{
|
|
VALUE tmp, prog;
|
|
int i;
|
|
const char *name = 0;
|
|
|
|
if (argc == 0) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments");
|
|
}
|
|
|
|
prog = 0;
|
|
tmp = rb_check_array_type(argv[0]);
|
|
if (!NIL_P(tmp)) {
|
|
if (RARRAY_LEN(tmp) != 2) {
|
|
rb_raise(rb_eArgError, "wrong first argument");
|
|
}
|
|
prog = RARRAY_PTR(tmp)[0];
|
|
argv[0] = RARRAY_PTR(tmp)[1];
|
|
SafeStringValue(prog);
|
|
StringValueCStr(prog);
|
|
prog = rb_str_new4(prog);
|
|
name = RSTRING_PTR(prog);
|
|
}
|
|
for (i = 0; i < argc; i++) {
|
|
SafeStringValue(argv[i]);
|
|
argv[i] = rb_str_new4(argv[i]);
|
|
StringValueCStr(argv[i]);
|
|
}
|
|
security(name ? name : RSTRING_PTR(argv[0]));
|
|
return prog;
|
|
}
|
|
|
|
static VALUE
|
|
rb_exec_getargs(int *argc_p, VALUE **argv_p, int accept_shell, VALUE *env_ret, VALUE *opthash_ret, struct rb_exec_arg *e)
|
|
{
|
|
VALUE hash, prog;
|
|
|
|
if (0 < *argc_p) {
|
|
hash = rb_check_convert_type((*argv_p)[*argc_p-1], T_HASH, "Hash", "to_hash");
|
|
if (!NIL_P(hash)) {
|
|
*opthash_ret = hash;
|
|
(*argc_p)--;
|
|
}
|
|
}
|
|
|
|
if (0 < *argc_p) {
|
|
hash = rb_check_convert_type((*argv_p)[0], T_HASH, "Hash", "to_hash");
|
|
if (!NIL_P(hash)) {
|
|
*env_ret = hash;
|
|
(*argc_p)--;
|
|
(*argv_p)++;
|
|
}
|
|
}
|
|
prog = rb_check_argv(*argc_p, *argv_p);
|
|
if (!prog) {
|
|
prog = (*argv_p)[0];
|
|
if (accept_shell && *argc_p == 1) {
|
|
*argc_p = 0;
|
|
*argv_p = 0;
|
|
}
|
|
}
|
|
return prog;
|
|
}
|
|
|
|
static void
|
|
rb_exec_fillarg(VALUE prog, int argc, VALUE *argv, VALUE env, VALUE opthash, struct rb_exec_arg *e)
|
|
{
|
|
VALUE options;
|
|
MEMZERO(e, struct rb_exec_arg, 1);
|
|
options = hide_obj(rb_ary_new());
|
|
e->options = options;
|
|
|
|
if (!NIL_P(opthash)) {
|
|
rb_check_exec_options(opthash, e);
|
|
}
|
|
if (!NIL_P(env)) {
|
|
env = rb_check_exec_env(env);
|
|
rb_ary_store(options, EXEC_OPTION_ENV, env);
|
|
}
|
|
|
|
e->argc = argc;
|
|
e->argv = argv;
|
|
e->prog = prog ? RSTRING_PTR(prog) : 0;
|
|
}
|
|
|
|
VALUE
|
|
rb_exec_arg_init(int argc, VALUE *argv, int accept_shell, struct rb_exec_arg *e)
|
|
{
|
|
VALUE prog;
|
|
VALUE env = Qnil, opthash = Qnil;
|
|
prog = rb_exec_getargs(&argc, &argv, accept_shell, &env, &opthash, e);
|
|
rb_exec_fillarg(prog, argc, argv, env, opthash, e);
|
|
return prog;
|
|
}
|
|
|
|
void
|
|
rb_exec_arg_fixup(struct rb_exec_arg *e)
|
|
{
|
|
e->redirect_fds = check_exec_fds(e->options);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* exec([env,] command [, arg, ...] [,options])
|
|
*
|
|
* Replaces the current process by running the given external _command_.
|
|
* If optional arguments, sequence of +arg+, are not given, that argument is
|
|
* taken as a line that is subject to shell expansion before being
|
|
* executed. If one or more +arg+ given, they
|
|
* are passed as parameters to _command_ with no shell
|
|
* expansion. If +command+ is a two-element array, the first
|
|
* element is the command to be executed, and the second argument is
|
|
* used as the <code>argv[0]</code> value, which may show up in process
|
|
* listings. In MSDOS environments, the command is executed in a
|
|
* subshell; otherwise, one of the <code>exec(2)</code> system calls is
|
|
* used, so the running command may inherit some of the environment of
|
|
* the original program (including open file descriptors).
|
|
*
|
|
* The hash arguments, env and options, are same as
|
|
* <code>system</code> and <code>spawn</code>.
|
|
* See <code>spawn</code> for details.
|
|
*
|
|
* Raises SystemCallError if the _command_ couldn't execute (typically
|
|
* <code>Errno::ENOENT</code> when it was not found).
|
|
*
|
|
* exec "echo *" # echoes list of files in current directory
|
|
* # never get here
|
|
*
|
|
*
|
|
* exec "echo", "*" # echoes an asterisk
|
|
* # never get here
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_exec(int argc, VALUE *argv)
|
|
{
|
|
struct rb_exec_arg earg;
|
|
|
|
rb_exec_arg_init(argc, argv, Qtrue, &earg);
|
|
if (NIL_P(rb_ary_entry(earg.options, EXEC_OPTION_CLOSE_OTHERS)))
|
|
rb_exec_arg_addopt(&earg, ID2SYM(rb_intern("close_others")), Qfalse);
|
|
rb_exec_arg_fixup(&earg);
|
|
|
|
rb_exec(&earg);
|
|
rb_sys_fail(earg.prog);
|
|
return Qnil; /* dummy */
|
|
}
|
|
|
|
/*#define DEBUG_REDIRECT*/
|
|
#if defined(DEBUG_REDIRECT)
|
|
|
|
#include <stdarg.h>
|
|
|
|
static void
|
|
ttyprintf(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
FILE *tty;
|
|
int save = errno;
|
|
tty = fopen("/dev/tty", "w");
|
|
if (!tty)
|
|
return;
|
|
|
|
va_start(ap, fmt);
|
|
vfprintf(tty, fmt, ap);
|
|
va_end(ap);
|
|
fclose(tty);
|
|
errno = save;
|
|
}
|
|
|
|
static int
|
|
redirect_dup(int oldfd)
|
|
{
|
|
int ret;
|
|
ret = dup(oldfd);
|
|
ttyprintf("dup(%d) => %d\n", oldfd, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
redirect_dup2(int oldfd, int newfd)
|
|
{
|
|
int ret;
|
|
ret = dup2(oldfd, newfd);
|
|
ttyprintf("dup2(%d, %d)\n", oldfd, newfd);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
redirect_close(int fd)
|
|
{
|
|
int ret;
|
|
ret = close(fd);
|
|
ttyprintf("close(%d)\n", fd);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
redirect_open(const char *pathname, int flags, mode_t perm)
|
|
{
|
|
int ret;
|
|
ret = open(pathname, flags, perm);
|
|
ttyprintf("open(\"%s\", 0x%x, 0%o) => %d\n", pathname, flags, perm, ret);
|
|
return ret;
|
|
}
|
|
|
|
#else
|
|
#define redirect_dup(oldfd) dup(oldfd)
|
|
#define redirect_dup2(oldfd, newfd) dup2(oldfd, newfd)
|
|
#define redirect_close(fd) close(fd)
|
|
#define redirect_open(pathname, flags, perm) open(pathname, flags, perm)
|
|
#endif
|
|
|
|
static int
|
|
save_redirect_fd(int fd, VALUE save)
|
|
{
|
|
if (!NIL_P(save)) {
|
|
VALUE newary;
|
|
int save_fd = redirect_dup(fd);
|
|
if (save_fd == -1) return -1;
|
|
newary = rb_ary_entry(save, EXEC_OPTION_DUP2);
|
|
if (NIL_P(newary)) {
|
|
newary = hide_obj(rb_ary_new());
|
|
rb_ary_store(save, EXEC_OPTION_DUP2, newary);
|
|
}
|
|
rb_ary_push(newary,
|
|
hide_obj(rb_assoc_new(INT2FIX(fd), INT2FIX(save_fd))));
|
|
|
|
newary = rb_ary_entry(save, EXEC_OPTION_CLOSE);
|
|
if (NIL_P(newary)) {
|
|
newary = hide_obj(rb_ary_new());
|
|
rb_ary_store(save, EXEC_OPTION_CLOSE, newary);
|
|
}
|
|
rb_ary_push(newary, hide_obj(rb_assoc_new(INT2FIX(save_fd), Qnil)));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static VALUE
|
|
save_env_i(VALUE i, VALUE ary, int argc, VALUE *argv)
|
|
{
|
|
rb_ary_push(ary, hide_obj(rb_ary_dup(argv[0])));
|
|
return Qnil;
|
|
}
|
|
|
|
static void
|
|
save_env(VALUE save)
|
|
{
|
|
if (!NIL_P(save) && NIL_P(rb_ary_entry(save, EXEC_OPTION_ENV))) {
|
|
VALUE env = rb_const_get(rb_cObject, rb_intern("ENV"));
|
|
if (RTEST(env)) {
|
|
VALUE ary = hide_obj(rb_ary_new());
|
|
rb_block_call(env, rb_intern("each"), 0, 0, save_env_i,
|
|
(VALUE)ary);
|
|
rb_ary_store(save, EXEC_OPTION_ENV, ary);
|
|
}
|
|
rb_ary_store(save, EXEC_OPTION_UNSETENV_OTHERS, Qtrue);
|
|
}
|
|
}
|
|
|
|
static int
|
|
intcmp(const void *a, const void *b)
|
|
{
|
|
return *(int*)a - *(int*)b;
|
|
}
|
|
|
|
static int
|
|
run_exec_dup2(VALUE ary, VALUE save)
|
|
{
|
|
int n, i;
|
|
int ret;
|
|
int extra_fd = -1;
|
|
struct fd_pair {
|
|
int oldfd;
|
|
int newfd;
|
|
int older_index;
|
|
int num_newer;
|
|
} *pairs = 0;
|
|
|
|
n = RARRAY_LEN(ary);
|
|
pairs = ALLOC_N(struct fd_pair, n);
|
|
|
|
/* initialize oldfd and newfd: O(n) */
|
|
for (i = 0; i < n; i++) {
|
|
VALUE elt = RARRAY_PTR(ary)[i];
|
|
pairs[i].oldfd = FIX2INT(RARRAY_PTR(elt)[1]);
|
|
pairs[i].newfd = FIX2INT(RARRAY_PTR(elt)[0]); /* unique */
|
|
pairs[i].older_index = -1;
|
|
}
|
|
|
|
/* sort the table by oldfd: O(n log n) */
|
|
qsort(pairs, n, sizeof(struct fd_pair), intcmp);
|
|
|
|
/* initialize older_index and num_newer: O(n log n) */
|
|
for (i = 0; i < n; i++) {
|
|
int newfd = pairs[i].newfd;
|
|
struct fd_pair key, *found;
|
|
key.oldfd = newfd;
|
|
found = bsearch(&key, pairs, n, sizeof(struct fd_pair), intcmp);
|
|
pairs[i].num_newer = 0;
|
|
if (found) {
|
|
while (pairs < found && (found-1)->oldfd == newfd)
|
|
found--;
|
|
while (found < pairs+n && found->oldfd == newfd) {
|
|
pairs[i].num_newer++;
|
|
found->older_index = i;
|
|
found++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* non-cyclic redirection: O(n) */
|
|
for (i = 0; i < n; i++) {
|
|
int j = i;
|
|
while (j != -1 && pairs[j].oldfd != -1 && pairs[j].num_newer == 0) {
|
|
if (save_redirect_fd(pairs[j].newfd, save) < 0)
|
|
return -1;
|
|
ret = redirect_dup2(pairs[j].oldfd, pairs[j].newfd);
|
|
if (ret == -1)
|
|
goto fail;
|
|
pairs[j].oldfd = -1;
|
|
j = pairs[j].older_index;
|
|
if (j != -1)
|
|
pairs[j].num_newer--;
|
|
}
|
|
}
|
|
|
|
/* cyclic redirection: O(n) */
|
|
for (i = 0; i < n; i++) {
|
|
int j;
|
|
if (pairs[i].oldfd == -1)
|
|
continue;
|
|
if (pairs[i].oldfd == pairs[i].newfd) { /* self cycle */
|
|
#ifdef F_GETFD
|
|
int fd = pairs[i].oldfd;
|
|
ret = fcntl(fd, F_GETFD);
|
|
if (ret == -1)
|
|
goto fail;
|
|
if (ret & FD_CLOEXEC) {
|
|
ret &= ~FD_CLOEXEC;
|
|
ret = fcntl(fd, F_SETFD, ret);
|
|
if (ret == -1)
|
|
goto fail;
|
|
}
|
|
#endif
|
|
pairs[i].oldfd = -1;
|
|
continue;
|
|
}
|
|
if (extra_fd == -1) {
|
|
extra_fd = redirect_dup(pairs[i].oldfd);
|
|
if (extra_fd == -1)
|
|
goto fail;
|
|
}
|
|
else {
|
|
ret = redirect_dup2(pairs[i].oldfd, extra_fd);
|
|
if (ret == -1)
|
|
goto fail;
|
|
}
|
|
pairs[i].oldfd = extra_fd;
|
|
j = pairs[i].older_index;
|
|
pairs[i].older_index = -1;
|
|
while (j != -1) {
|
|
ret = redirect_dup2(pairs[j].oldfd, pairs[j].newfd);
|
|
if (ret == -1)
|
|
goto fail;
|
|
pairs[j].oldfd = -1;
|
|
j = pairs[j].older_index;
|
|
}
|
|
}
|
|
if (extra_fd != -1) {
|
|
ret = redirect_close(extra_fd);
|
|
if (ret == -1)
|
|
goto fail;
|
|
}
|
|
|
|
xfree(pairs);
|
|
return 0;
|
|
|
|
fail:
|
|
xfree(pairs);
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
run_exec_close(VALUE ary)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < RARRAY_LEN(ary); i++) {
|
|
VALUE elt = RARRAY_PTR(ary)[i];
|
|
int fd = FIX2INT(RARRAY_PTR(elt)[0]);
|
|
ret = redirect_close(fd);
|
|
if (ret == -1)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
run_exec_open(VALUE ary, VALUE save)
|
|
{
|
|
int i, ret;
|
|
|
|
for (i = 0; i < RARRAY_LEN(ary);) {
|
|
VALUE elt = RARRAY_PTR(ary)[i];
|
|
int fd = FIX2INT(RARRAY_PTR(elt)[0]);
|
|
VALUE param = RARRAY_PTR(elt)[1];
|
|
char *path = RSTRING_PTR(RARRAY_PTR(param)[0]);
|
|
int flags = NUM2INT(RARRAY_PTR(param)[1]);
|
|
int perm = NUM2INT(RARRAY_PTR(param)[2]);
|
|
int need_close = 1;
|
|
int fd2 = redirect_open(path, flags, perm);
|
|
if (fd2 == -1) return -1;
|
|
while (i < RARRAY_LEN(ary) &&
|
|
(elt = RARRAY_PTR(ary)[i], RARRAY_PTR(elt)[1] == param)) {
|
|
fd = FIX2INT(RARRAY_PTR(elt)[0]);
|
|
if (fd == fd2) {
|
|
need_close = 0;
|
|
}
|
|
else {
|
|
if (save_redirect_fd(fd, save) < 0)
|
|
return -1;
|
|
ret = redirect_dup2(fd2, fd);
|
|
if (ret == -1) return -1;
|
|
}
|
|
i++;
|
|
}
|
|
if (need_close) {
|
|
ret = redirect_close(fd2);
|
|
if (ret == -1) return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef HAVE_SETPGID
|
|
static int
|
|
run_exec_pgroup(VALUE obj, VALUE save)
|
|
{
|
|
/*
|
|
* If FD_CLOEXEC is available, rb_fork waits the child's execve.
|
|
* So setpgid is done in the child when rb_fork is returned in the parent.
|
|
* No race condition, even without setpgid from the parent.
|
|
* (Is there an environment which has setpgid but FD_CLOEXEC?)
|
|
*/
|
|
pid_t pgroup;
|
|
if (!NIL_P(save)) {
|
|
/* maybe meaningless with no fork environment... */
|
|
rb_ary_store(save, EXEC_OPTION_PGROUP, PIDT2NUM(getpgrp()));
|
|
}
|
|
pgroup = NUM2PIDT(obj);
|
|
if (pgroup == 0) {
|
|
pgroup = getpid();
|
|
}
|
|
return setpgid(getpid(), pgroup);
|
|
}
|
|
#endif
|
|
|
|
#ifdef RLIM2NUM
|
|
static int
|
|
run_exec_rlimit(VALUE ary, VALUE save)
|
|
{
|
|
int i;
|
|
for (i = 0; i < RARRAY_LEN(ary); i++) {
|
|
VALUE elt = RARRAY_PTR(ary)[i];
|
|
int rtype = NUM2INT(RARRAY_PTR(elt)[0]);
|
|
struct rlimit rlim;
|
|
if (!NIL_P(save)) {
|
|
VALUE tmp, newary;
|
|
if (getrlimit(rtype, &rlim) == -1)
|
|
return -1;
|
|
tmp = hide_obj(rb_ary_new3(3, RARRAY_PTR(elt)[0],
|
|
RLIM2NUM(rlim.rlim_cur),
|
|
RLIM2NUM(rlim.rlim_max)));
|
|
newary = rb_ary_entry(save, EXEC_OPTION_RLIMIT);
|
|
if (NIL_P(newary)) {
|
|
newary = hide_obj(rb_ary_new());
|
|
rb_ary_store(save, EXEC_OPTION_RLIMIT, newary);
|
|
}
|
|
rb_ary_push(newary, tmp);
|
|
}
|
|
rlim.rlim_cur = NUM2RLIM(RARRAY_PTR(elt)[1]);
|
|
rlim.rlim_max = NUM2RLIM(RARRAY_PTR(elt)[2]);
|
|
if (setrlimit(rtype, &rlim) == -1)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int
|
|
rb_run_exec_options(const struct rb_exec_arg *e, struct rb_exec_arg *s)
|
|
{
|
|
VALUE options = e->options;
|
|
VALUE soptions = Qnil;
|
|
VALUE obj;
|
|
|
|
if (!RTEST(options))
|
|
return 0;
|
|
|
|
if (s) {
|
|
s->argc = 0;
|
|
s->argv = NULL;
|
|
s->prog = NULL;
|
|
s->options = soptions = hide_obj(rb_ary_new());
|
|
s->redirect_fds = Qnil;
|
|
}
|
|
|
|
#ifdef HAVE_SETPGID
|
|
obj = rb_ary_entry(options, EXEC_OPTION_PGROUP);
|
|
if (RTEST(obj)) {
|
|
if (run_exec_pgroup(obj, soptions) == -1)
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
#ifdef RLIM2NUM
|
|
obj = rb_ary_entry(options, EXEC_OPTION_RLIMIT);
|
|
if (!NIL_P(obj)) {
|
|
if (run_exec_rlimit(obj, soptions) == -1)
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_UNSETENV_OTHERS);
|
|
if (RTEST(obj)) {
|
|
save_env(soptions);
|
|
rb_env_clear();
|
|
}
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_ENV);
|
|
if (!NIL_P(obj)) {
|
|
int i;
|
|
save_env(soptions);
|
|
for (i = 0; i < RARRAY_LEN(obj); i++) {
|
|
VALUE pair = RARRAY_PTR(obj)[i];
|
|
VALUE key = RARRAY_PTR(pair)[0];
|
|
VALUE val = RARRAY_PTR(pair)[1];
|
|
if (NIL_P(val))
|
|
ruby_setenv(StringValueCStr(key), 0);
|
|
else
|
|
ruby_setenv(StringValueCStr(key), StringValueCStr(val));
|
|
}
|
|
}
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_CHDIR);
|
|
if (!NIL_P(obj)) {
|
|
if (!NIL_P(soptions)) {
|
|
char *cwd = my_getcwd();
|
|
rb_ary_store(soptions, EXEC_OPTION_CHDIR,
|
|
hide_obj(rb_str_new2(cwd)));
|
|
}
|
|
if (chdir(RSTRING_PTR(obj)) == -1)
|
|
return -1;
|
|
}
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_UMASK);
|
|
if (!NIL_P(obj)) {
|
|
mode_t mask = NUM2LONG(obj);
|
|
mode_t oldmask = umask(mask); /* never fail */
|
|
if (!NIL_P(soptions))
|
|
rb_ary_store(soptions, EXEC_OPTION_UMASK, LONG2NUM(oldmask));
|
|
}
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_DUP2);
|
|
if (!NIL_P(obj)) {
|
|
if (run_exec_dup2(obj, soptions) == -1)
|
|
return -1;
|
|
}
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_CLOSE);
|
|
if (!NIL_P(obj)) {
|
|
if (!NIL_P(soptions))
|
|
rb_warn("cannot close fd before spawn");
|
|
else {
|
|
if (run_exec_close(obj) == -1)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_FORK
|
|
obj = rb_ary_entry(options, EXEC_OPTION_CLOSE_OTHERS);
|
|
if (obj != Qfalse) {
|
|
rb_close_before_exec(3, FIX2LONG(obj), e->redirect_fds);
|
|
}
|
|
#endif
|
|
|
|
obj = rb_ary_entry(options, EXEC_OPTION_OPEN);
|
|
if (!NIL_P(obj)) {
|
|
if (run_exec_open(obj, soptions) == -1)
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
rb_exec(const struct rb_exec_arg *e)
|
|
{
|
|
int argc = e->argc;
|
|
VALUE *argv = e->argv;
|
|
const char *prog = e->prog;
|
|
|
|
if (rb_run_exec_options(e, NULL) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (argc == 0) {
|
|
rb_proc_exec(prog);
|
|
}
|
|
else {
|
|
rb_proc_exec_n(argc, argv, prog);
|
|
}
|
|
#ifndef FD_CLOEXEC
|
|
preserving_errno({
|
|
fprintf(stderr, "%s:%d: command not found: %s\n",
|
|
rb_sourcefile(), rb_sourceline(), prog);
|
|
});
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
#ifdef HAVE_FORK
|
|
static int
|
|
rb_exec_atfork(void* arg)
|
|
{
|
|
rb_thread_atfork_before_exec();
|
|
return rb_exec(arg);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_FORK
|
|
#ifdef FD_CLOEXEC
|
|
#if SIZEOF_INT == SIZEOF_LONG
|
|
#define proc_syswait (VALUE (*)(VALUE))rb_syswait
|
|
#else
|
|
static VALUE
|
|
proc_syswait(VALUE pid)
|
|
{
|
|
rb_syswait((int)pid);
|
|
return Qnil;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
static int
|
|
move_fds_to_avoid_crash(int *fdp, int n, VALUE fds)
|
|
{
|
|
long min = 0;
|
|
int i;
|
|
for (i = 0; i < n; i++) {
|
|
int ret;
|
|
while (RTEST(rb_hash_lookup(fds, INT2FIX(fdp[i])))) {
|
|
if (min <= fdp[i])
|
|
min = fdp[i]+1;
|
|
while (RTEST(rb_hash_lookup(fds, INT2FIX(min))))
|
|
min++;
|
|
ret = fcntl(fdp[i], F_DUPFD, min);
|
|
if (ret == -1)
|
|
return -1;
|
|
close(fdp[i]);
|
|
fdp[i] = ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pipe_nocrash(int filedes[2], VALUE fds)
|
|
{
|
|
int ret;
|
|
ret = rb_pipe(filedes);
|
|
if (ret == -1)
|
|
return -1;
|
|
if (RTEST(fds)) {
|
|
int save = errno;
|
|
if (move_fds_to_avoid_crash(filedes, 2, fds) == -1) {
|
|
close(filedes[0]);
|
|
close(filedes[1]);
|
|
return -1;
|
|
}
|
|
errno = save;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Forks child process, and returns the process ID in the parent
|
|
* process.
|
|
*
|
|
* If +status+ is given, protects from any exceptions and sets the
|
|
* jump status to it.
|
|
*
|
|
* In the child process, just returns 0 if +chfunc+ is +NULL+.
|
|
* Otherwise +chfunc+ will be called with +charg+, and then the child
|
|
* process exits with +EXIT_SUCCESS+ when it returned zero.
|
|
*
|
|
* In the case of the function is called and returns non-zero value,
|
|
* the child process exits with non-+EXIT_SUCCESS+ value (normally
|
|
* 127). And, on the platforms where +FD_CLOEXEC+ is available,
|
|
* +errno+ is propagated to the parent process, and this function
|
|
* returns -1 in the parent process. On the other platforms, just
|
|
* returns pid.
|
|
*
|
|
* If fds is not Qnil, internal pipe for the errno propagation is
|
|
* arranged to avoid conflicts of the hash keys in +fds+.
|
|
*
|
|
* +chfunc+ must not raise any exceptions.
|
|
*/
|
|
rb_pid_t
|
|
rb_fork(int *status, int (*chfunc)(void*), void *charg, VALUE fds)
|
|
{
|
|
rb_pid_t pid;
|
|
int err, state = 0;
|
|
#ifdef FD_CLOEXEC
|
|
int ep[2];
|
|
#endif
|
|
|
|
#ifndef __VMS
|
|
#define prefork() ( \
|
|
rb_io_flush(rb_stdout), \
|
|
rb_io_flush(rb_stderr) \
|
|
)
|
|
#else
|
|
#define prefork() ((void)0)
|
|
#endif
|
|
|
|
prefork();
|
|
|
|
#ifdef FD_CLOEXEC
|
|
if (chfunc) {
|
|
if (pipe_nocrash(ep, fds)) return -1;
|
|
if (fcntl(ep[1], F_SETFD, FD_CLOEXEC)) {
|
|
preserving_errno((close(ep[0]), close(ep[1])));
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
for (; (pid = fork()) < 0; prefork()) {
|
|
switch (errno) {
|
|
case EAGAIN:
|
|
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
|
|
case EWOULDBLOCK:
|
|
#endif
|
|
if (!status && !chfunc) {
|
|
rb_thread_sleep(1);
|
|
continue;
|
|
}
|
|
else {
|
|
rb_protect((VALUE (*)())rb_thread_sleep, 1, &state);
|
|
if (status) *status = state;
|
|
if (!state) continue;
|
|
}
|
|
default:
|
|
#ifdef FD_CLOEXEC
|
|
if (chfunc) {
|
|
preserving_errno((close(ep[0]), close(ep[1])));
|
|
}
|
|
#endif
|
|
if (state && !status) rb_jump_tag(state);
|
|
return -1;
|
|
}
|
|
}
|
|
if (!pid) {
|
|
rb_thread_reset_timer_thread();
|
|
if (chfunc) {
|
|
#ifdef FD_CLOEXEC
|
|
close(ep[0]);
|
|
#endif
|
|
if (!(*chfunc)(charg)) _exit(EXIT_SUCCESS);
|
|
#ifdef FD_CLOEXEC
|
|
err = errno;
|
|
write(ep[1], &err, sizeof(err));
|
|
#endif
|
|
#if EXIT_SUCCESS == 127
|
|
_exit(EXIT_FAILURE);
|
|
#else
|
|
_exit(127);
|
|
#endif
|
|
}
|
|
rb_thread_start_timer_thread();
|
|
}
|
|
#ifdef FD_CLOEXEC
|
|
else if (chfunc) {
|
|
close(ep[1]);
|
|
if ((state = read(ep[0], &err, sizeof(err))) < 0) {
|
|
err = errno;
|
|
}
|
|
close(ep[0]);
|
|
if (state) {
|
|
if (status) {
|
|
rb_protect(proc_syswait, (VALUE)pid, status);
|
|
}
|
|
else {
|
|
rb_syswait(pid);
|
|
}
|
|
errno = err;
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
return pid;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* call-seq:
|
|
* Kernel.fork [{ block }] => fixnum or nil
|
|
* Process.fork [{ block }] => fixnum or nil
|
|
*
|
|
* Creates a subprocess. If a block is specified, that block is run
|
|
* in the subprocess, and the subprocess terminates with a status of
|
|
* zero. Otherwise, the +fork+ call returns twice, once in
|
|
* the parent, returning the process ID of the child, and once in
|
|
* the child, returning _nil_. The child process can exit using
|
|
* <code>Kernel.exit!</code> to avoid running any
|
|
* <code>at_exit</code> functions. The parent process should
|
|
* use <code>Process.wait</code> to collect the termination statuses
|
|
* of its children or use <code>Process.detach</code> to register
|
|
* disinterest in their status; otherwise, the operating system
|
|
* may accumulate zombie processes.
|
|
*
|
|
* The thread calling fork is the only thread in the created child process.
|
|
* fork doesn't copy other threads.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_fork(VALUE obj)
|
|
{
|
|
#if defined(HAVE_FORK) && !defined(CANNOT_FORK_WITH_PTHREAD)
|
|
rb_pid_t pid;
|
|
|
|
rb_secure(2);
|
|
|
|
switch (pid = rb_fork(0, 0, 0, Qnil)) {
|
|
case 0:
|
|
#ifdef linux
|
|
after_exec();
|
|
#endif
|
|
rb_thread_atfork();
|
|
if (rb_block_given_p()) {
|
|
int status;
|
|
|
|
rb_protect(rb_yield, Qundef, &status);
|
|
ruby_stop(status);
|
|
}
|
|
return Qnil;
|
|
|
|
case -1:
|
|
rb_sys_fail("fork(2)");
|
|
return Qnil;
|
|
|
|
default:
|
|
return PIDT2NUM(pid);
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.exit!(fixnum=-1)
|
|
*
|
|
* Exits the process immediately. No exit handlers are
|
|
* run. <em>fixnum</em> is returned to the underlying system as the
|
|
* exit status.
|
|
*
|
|
* Process.exit!(0)
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_exit_bang(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
VALUE status;
|
|
int istatus;
|
|
|
|
rb_secure(4);
|
|
if (argc > 0 && rb_scan_args(argc, argv, "01", &status) == 1) {
|
|
switch (status) {
|
|
case Qtrue:
|
|
istatus = EXIT_SUCCESS;
|
|
break;
|
|
case Qfalse:
|
|
istatus = EXIT_FAILURE;
|
|
break;
|
|
default:
|
|
istatus = NUM2INT(status);
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
istatus = EXIT_FAILURE;
|
|
}
|
|
_exit(istatus);
|
|
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
void
|
|
rb_exit(int status)
|
|
{
|
|
if (GET_THREAD()->tag) {
|
|
VALUE args[2];
|
|
|
|
args[0] = INT2NUM(status);
|
|
args[1] = rb_str_new2("exit");
|
|
rb_exc_raise(rb_class_new_instance(2, args, rb_eSystemExit));
|
|
}
|
|
ruby_finalize();
|
|
exit(status);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* exit(integer=0)
|
|
* Kernel::exit(integer=0)
|
|
* Process::exit(integer=0)
|
|
*
|
|
* Initiates the termination of the Ruby script by raising the
|
|
* <code>SystemExit</code> exception. This exception may be caught. The
|
|
* optional parameter is used to return a status code to the invoking
|
|
* environment.
|
|
*
|
|
* begin
|
|
* exit
|
|
* puts "never get here"
|
|
* rescue SystemExit
|
|
* puts "rescued a SystemExit exception"
|
|
* end
|
|
* puts "after begin block"
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* rescued a SystemExit exception
|
|
* after begin block
|
|
*
|
|
* Just prior to termination, Ruby executes any <code>at_exit</code> functions
|
|
* (see Kernel::at_exit) and runs any object finalizers (see
|
|
* ObjectSpace::define_finalizer).
|
|
*
|
|
* at_exit { puts "at_exit function" }
|
|
* ObjectSpace.define_finalizer("string", proc { puts "in finalizer" })
|
|
* exit
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* at_exit function
|
|
* in finalizer
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_exit(int argc, VALUE *argv)
|
|
{
|
|
VALUE status;
|
|
int istatus;
|
|
|
|
rb_secure(4);
|
|
if (argc > 0 && rb_scan_args(argc, argv, "01", &status) == 1) {
|
|
switch (status) {
|
|
case Qtrue:
|
|
istatus = EXIT_SUCCESS;
|
|
break;
|
|
case Qfalse:
|
|
istatus = EXIT_FAILURE;
|
|
break;
|
|
default:
|
|
istatus = NUM2INT(status);
|
|
#if EXIT_SUCCESS != 0
|
|
if (istatus == 0)
|
|
istatus = EXIT_SUCCESS;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
istatus = EXIT_SUCCESS;
|
|
}
|
|
rb_exit(istatus);
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* abort
|
|
* Kernel::abort
|
|
* Process::abort
|
|
*
|
|
* Terminate execution immediately, effectively by calling
|
|
* <code>Kernel.exit(1)</code>. If _msg_ is given, it is written
|
|
* to STDERR prior to terminating.
|
|
*/
|
|
|
|
VALUE
|
|
rb_f_abort(int argc, VALUE *argv)
|
|
{
|
|
extern void ruby_error_print(void);
|
|
|
|
rb_secure(4);
|
|
if (argc == 0) {
|
|
if (!NIL_P(GET_THREAD()->errinfo)) {
|
|
ruby_error_print();
|
|
}
|
|
rb_exit(EXIT_FAILURE);
|
|
}
|
|
else {
|
|
VALUE args[2];
|
|
|
|
rb_scan_args(argc, argv, "1", &args[1]);
|
|
StringValue(argv[0]);
|
|
rb_io_puts(argc, argv, rb_stderr);
|
|
args[0] = INT2NUM(EXIT_FAILURE);
|
|
rb_exc_raise(rb_class_new_instance(2, args, rb_eSystemExit));
|
|
}
|
|
return Qnil; /* not reached */
|
|
}
|
|
|
|
|
|
#if defined(sun)
|
|
#define signal(a,b) sigset(a,b)
|
|
#else
|
|
# if defined(POSIX_SIGNAL)
|
|
# define signal(a,b) posix_signal(a,b)
|
|
# endif
|
|
#endif
|
|
|
|
void
|
|
rb_syswait(rb_pid_t pid)
|
|
{
|
|
static int overriding;
|
|
#ifdef SIGHUP
|
|
RETSIGTYPE (*hfunc)(int) = 0;
|
|
#endif
|
|
#ifdef SIGQUIT
|
|
RETSIGTYPE (*qfunc)(int) = 0;
|
|
#endif
|
|
RETSIGTYPE (*ifunc)(int) = 0;
|
|
int status;
|
|
int i, hooked = Qfalse;
|
|
|
|
if (!overriding) {
|
|
#ifdef SIGHUP
|
|
hfunc = signal(SIGHUP, SIG_IGN);
|
|
#endif
|
|
#ifdef SIGQUIT
|
|
qfunc = signal(SIGQUIT, SIG_IGN);
|
|
#endif
|
|
ifunc = signal(SIGINT, SIG_IGN);
|
|
overriding = Qtrue;
|
|
hooked = Qtrue;
|
|
}
|
|
|
|
do {
|
|
i = rb_waitpid(pid, &status, 0);
|
|
} while (i == -1 && errno == EINTR);
|
|
|
|
if (hooked) {
|
|
#ifdef SIGHUP
|
|
signal(SIGHUP, hfunc);
|
|
#endif
|
|
#ifdef SIGQUIT
|
|
signal(SIGQUIT, qfunc);
|
|
#endif
|
|
signal(SIGINT, ifunc);
|
|
overriding = Qfalse;
|
|
}
|
|
}
|
|
|
|
static rb_pid_t
|
|
rb_spawn_internal(int argc, VALUE *argv, int default_close_others)
|
|
{
|
|
rb_pid_t status;
|
|
VALUE prog;
|
|
struct rb_exec_arg earg;
|
|
#if !defined HAVE_FORK
|
|
struct rb_exec_arg sarg;
|
|
#endif
|
|
|
|
prog = rb_exec_arg_init(argc, argv, Qtrue, &earg);
|
|
if (NIL_P(rb_ary_entry(earg.options, EXEC_OPTION_CLOSE_OTHERS))) {
|
|
VALUE v = default_close_others ? Qtrue : Qfalse;
|
|
rb_exec_arg_addopt(&earg, ID2SYM(rb_intern("close_others")), v);
|
|
}
|
|
rb_exec_arg_fixup(&earg);
|
|
|
|
#if defined HAVE_FORK
|
|
status = rb_fork(&status, rb_exec_atfork, &earg, earg.redirect_fds);
|
|
if (prog && earg.argc) earg.argv[0] = prog;
|
|
#else
|
|
if (rb_run_exec_options(&earg, &sarg) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
argc = earg.argc;
|
|
argv = earg.argv;
|
|
if (prog && argc) argv[0] = prog;
|
|
# if defined HAVE_SPAWNV
|
|
if (!argc) {
|
|
status = proc_spawn(RSTRING_PTR(prog));
|
|
}
|
|
else {
|
|
status = proc_spawn_n(argc, argv, prog);
|
|
}
|
|
# if defined(_WIN32)
|
|
if (status == -1)
|
|
rb_last_status_set(0x7f << 8, 0);
|
|
# endif
|
|
# else
|
|
if (argc) prog = rb_ary_join(rb_ary_new4(argc, argv), rb_str_new2(" "));
|
|
status = system(StringValuePtr(prog));
|
|
# if defined(__human68k__) || defined(__DJGPP__)
|
|
rb_last_status_set(status == -1 ? 127 : status, 0);
|
|
# else
|
|
rb_last_status_set((status & 0xff) << 8, 0);
|
|
# endif
|
|
# endif
|
|
|
|
rb_run_exec_options(&sarg, NULL);
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
rb_pid_t
|
|
rb_spawn(int argc, VALUE *argv)
|
|
{
|
|
return rb_spawn_internal(argc, argv, Qtrue);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* system([env,] cmd [, arg, ...] [,options]) => true, false or nil
|
|
*
|
|
* Executes _cmd_ in a subshell, returning +true+ if the command
|
|
* gives zero exit status, +false+ for non zero exit status. Returns
|
|
* +nil+ if command execution fails. An error status is available in
|
|
* <code>$?</code>. The arguments are processed in the same way as
|
|
* for <code>Kernel::exec</code>.
|
|
*
|
|
* The hash arguments, env and options, are same as
|
|
* <code>exec</code> and <code>spawn</code>.
|
|
* See <code>spawn</code> for details.
|
|
*
|
|
* system("echo *")
|
|
* system("echo", "*")
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* config.h main.rb
|
|
* *
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_system(int argc, VALUE *argv)
|
|
{
|
|
int status;
|
|
|
|
#if defined(SIGCLD) && !defined(SIGCHLD)
|
|
# define SIGCHLD SIGCLD
|
|
#endif
|
|
|
|
#ifdef SIGCHLD
|
|
RETSIGTYPE (*chfunc)(int);
|
|
|
|
chfunc = signal(SIGCHLD, SIG_DFL);
|
|
#endif
|
|
status = rb_spawn_internal(argc, argv, Qfalse);
|
|
#if defined(HAVE_FORK) || defined(HAVE_SPAWNV)
|
|
if (status > 0) {
|
|
rb_syswait(status);
|
|
}
|
|
#endif
|
|
#ifdef SIGCHLD
|
|
signal(SIGCHLD, chfunc);
|
|
#endif
|
|
if (status < 0) {
|
|
return Qnil;
|
|
}
|
|
status = PST2INT(rb_last_status_get());
|
|
if (status == EXIT_SUCCESS) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* spawn([env,] cmd [, arg, ...] [,options]) => pid
|
|
*
|
|
* Similar to <code>Kernel::system</code> except for not waiting for
|
|
* end of _cmd_, but returns its <i>pid</i>.
|
|
*
|
|
* If a hash is given as +env+, the environment is
|
|
* updated by +env+ before <code>exec(2)</code> in the child process.
|
|
* If a pair in +env+ has nil as the value, the variable is deleted.
|
|
*
|
|
* # set FOO as BAR and unset BAZ.
|
|
* pid = spawn({"FOO"=>"BAR", "BAZ"=>nil}, command)
|
|
*
|
|
* If a hash is given as +options+,
|
|
* it specifies
|
|
* process group,
|
|
* resource limit,
|
|
* current directory,
|
|
* umask and
|
|
* redirects for the child process.
|
|
* Also, it can be specified to clear environment variables.
|
|
*
|
|
* The <code>:unsetenv_others</code> key in +options+ specifies
|
|
* to clear environment variables, other than specified by +env+.
|
|
*
|
|
* pid = spawn(command, :unsetenv_others=>true) # no environment variable
|
|
* pid = spawn({"FOO"=>"BAR"}, command, :unsetenv_others=>true) # FOO only
|
|
*
|
|
* The <code>:pgroup</code> key in +options+ specifies a process group.
|
|
* The corresponding value should be true, zero or positive integer.
|
|
* true and zero means the process should be a process leader.
|
|
* Other values specifies a process group to be belongs.
|
|
*
|
|
* pid = spawn(command, :pgroup=>true) # process leader
|
|
* pid = spawn(command, :pgroup=>10) # belongs to the process group 10
|
|
*
|
|
* The <code>:rlimit_</code><em>foo</em> key specifies a resource limit.
|
|
* <em>foo</em> should be one of resource types such as <code>core</code>
|
|
* The corresponding value should be an integer or an array which have one or
|
|
* two integers: same as cur_limit and max_limit arguments for
|
|
* Process.setrlimit.
|
|
*
|
|
* pid = spawn(command, :rlimit_core=>0) # never dump core.
|
|
* cur, max = Process.getrlimit(:CORE)
|
|
* pid = spawn(command, :rlimit_core=>[0,max]) # disable core temporary.
|
|
* pid = spawn(command, :rlimit_core=>max) # enable core dump
|
|
*
|
|
* The <code>:chdir</code> key in +options+ specifies the current directory.
|
|
*
|
|
* pid = spawn(command, :chdir=>"/var/tmp")
|
|
*
|
|
* The <code>:umask</code> key in +options+ specifies the umask.
|
|
*
|
|
* pid = spawn(command, :umask=>077)
|
|
*
|
|
* The :in, :out, :err, a fixnum, an IO and an array key specifies a redirect.
|
|
* The redirection maps a file descriptor in the child process.
|
|
*
|
|
* For example, stderr can be merged into stdout:
|
|
*
|
|
* pid = spawn(command, :err=>:out)
|
|
* pid = spawn(command, STDERR=>STDOUT)
|
|
* pid = spawn(command, 2=>1)
|
|
*
|
|
* The hash keys specifies a file descriptor
|
|
* in the child process started by <code>spawn</code>.
|
|
* :err, STDERR and 2 specifies the standard error stream.
|
|
*
|
|
* The hash values specifies a file descriptor
|
|
* in the parent process which invokes <code>spawn</code>.
|
|
* :out, STDOUT and 1 specifies the standard output stream.
|
|
*
|
|
* The standard output in the child process is not specified.
|
|
* So it is inherited from the parent process.
|
|
*
|
|
* The standard input stream can be specifed by :in, STDIN and 0.
|
|
*
|
|
* A filename can be specified as a hash value.
|
|
*
|
|
* pid = spawn(command, STDIN=>"/dev/null") # read mode
|
|
* pid = spawn(command, STDOUT=>"/dev/null") # write mode
|
|
* pid = spawn(command, STDERR=>"log") # write mode
|
|
* pid = spawn(command, 3=>"/dev/null") # read mode
|
|
*
|
|
* For standard output and standard error,
|
|
* it is opened in write mode.
|
|
* Otherwise read mode is used.
|
|
*
|
|
* For specifying flags and permission of file creation explicitly,
|
|
* an array is used instead.
|
|
*
|
|
* pid = spawn(command, STDIN=>["file"]) # read mode is assumed
|
|
* pid = spawn(command, STDIN=>["file", "r"])
|
|
* pid = spawn(command, STDOUT=>["log", "w"]) # 0644 assumed
|
|
* pid = spawn(command, STDOUT=>["log", "w", 0600])
|
|
* pid = spawn(command, STDOUT=>["log", File::WRONLY|File::EXCL|File::CREAT, 0600])
|
|
*
|
|
* The array specifies a filename, flags and permission.
|
|
* The flags can be a string or an integer.
|
|
* If the flags is ommitted or nil, File::RDONLY is assumed.
|
|
* The permission should be an integer.
|
|
* If the permission is ommitted or nil, 0644 is assumed.
|
|
*
|
|
* If an array of IOs and integers are specified as a hash key,
|
|
* all the elemetns are redirected.
|
|
*
|
|
* # standard output and standard error is redirected to log file.
|
|
* pid = spawn(command, [STDOUT, STDERR]=>["log", "w"])
|
|
*
|
|
* spawn closes all non-standard unspecified descriptors by default.
|
|
* The "standard" descriptors are 0, 1 and 2.
|
|
* This behavior is specified by :close_others option.
|
|
* :close_others doesn't affect the standard descriptors which are
|
|
* closed only if :close is specified explicitly.
|
|
*
|
|
* pid = spawn(command, :close_others=>true) # close 3,4,5,... (default)
|
|
* pid = spawn(command, :close_others=>false) # don't close 3,4,5,...
|
|
*
|
|
* :close_others is true by default for spawn and IO.popen.
|
|
*
|
|
* So IO.pipe and spawn can be used as IO.popen.
|
|
*
|
|
* # similar to r = IO.popen(command)
|
|
* r, w = IO.pipe
|
|
* pid = spawn(command, STDOUT=>w) # r, w is closed in the child process.
|
|
* w.close
|
|
*
|
|
* :close is specified as a hash value to close a fd individualy.
|
|
*
|
|
* f = open(foo)
|
|
* system(command, f=>:close) # don't inherit f.
|
|
*
|
|
* It is also possible to exchange file descriptors.
|
|
*
|
|
* pid = spawn(command, STDOUT=>STDERR, STDERR=>STDOUT)
|
|
*
|
|
* The hash keys specify file descriptors in the child process.
|
|
* The hash values specifies file descriptors in the parent process.
|
|
* So the above specifies exchanging STDOUT and STDERR.
|
|
* Internally, +spawn+ uses an extra file descriptor to resolve such cyclic
|
|
* file descriptor mapping.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_spawn(int argc, VALUE *argv)
|
|
{
|
|
rb_pid_t pid;
|
|
|
|
pid = rb_spawn(argc, argv);
|
|
if (pid == -1) rb_sys_fail(RSTRING_PTR(argv[0]));
|
|
#if defined(HAVE_FORK) || defined(HAVE_SPAWNV)
|
|
return PIDT2NUM(pid);
|
|
#else
|
|
return Qnil;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* sleep([duration]) => fixnum
|
|
*
|
|
* Suspends the current thread for _duration_ seconds (which may be any number,
|
|
* including a +Float+ with fractional seconds). Returns the actual number of
|
|
* seconds slept (rounded), which may be less than that asked for if another
|
|
* thread calls <code>Thread#run</code>. Zero arguments causes +sleep+ to sleep
|
|
* forever.
|
|
*
|
|
* Time.new #=> 2008-03-08 19:56:19 +0900
|
|
* sleep 1.2 #=> 1
|
|
* Time.new #=> 2008-03-08 19:56:20 +0900
|
|
* sleep 1.9 #=> 2
|
|
* Time.new #=> 2008-03-08 19:56:22 +0900
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_sleep(int argc, VALUE *argv)
|
|
{
|
|
int beg, end;
|
|
|
|
beg = time(0);
|
|
if (argc == 0) {
|
|
rb_thread_sleep_forever();
|
|
}
|
|
else if (argc == 1) {
|
|
rb_thread_wait_for(rb_time_interval(argv[0]));
|
|
}
|
|
else {
|
|
rb_raise(rb_eArgError, "wrong number of arguments");
|
|
}
|
|
|
|
end = time(0) - beg;
|
|
|
|
return INT2FIX(end);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.getpgrp => integer
|
|
*
|
|
* Returns the process group ID for this process. Not available on
|
|
* all platforms.
|
|
*
|
|
* Process.getpgid(0) #=> 25527
|
|
* Process.getpgrp #=> 25527
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getpgrp(void)
|
|
{
|
|
#if defined(HAVE_GETPGRP) && defined(GETPGRP_VOID) || defined(HAVE_GETPGID)
|
|
rb_pid_t pgrp;
|
|
#endif
|
|
|
|
rb_secure(2);
|
|
#if defined(HAVE_GETPGRP) && defined(GETPGRP_VOID)
|
|
pgrp = getpgrp();
|
|
if (pgrp < 0) rb_sys_fail(0);
|
|
return PIDT2NUM(pgrp);
|
|
#else
|
|
# ifdef HAVE_GETPGID
|
|
pgrp = getpgid(0);
|
|
if (pgrp < 0) rb_sys_fail(0);
|
|
return PIDT2NUM(pgrp);
|
|
# else
|
|
rb_notimplement();
|
|
# endif
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.setpgrp => 0
|
|
*
|
|
* Equivalent to <code>setpgid(0,0)</code>. Not available on all
|
|
* platforms.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setpgrp(void)
|
|
{
|
|
rb_secure(2);
|
|
/* check for posix setpgid() first; this matches the posix */
|
|
/* getpgrp() above. It appears that configure will set SETPGRP_VOID */
|
|
/* even though setpgrp(0,0) would be preferred. The posix call avoids */
|
|
/* this confusion. */
|
|
#ifdef HAVE_SETPGID
|
|
if (setpgid(0,0) < 0) rb_sys_fail(0);
|
|
#elif defined(HAVE_SETPGRP) && defined(SETPGRP_VOID)
|
|
if (setpgrp() < 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return INT2FIX(0);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.getpgid(pid) => integer
|
|
*
|
|
* Returns the process group ID for the given process id. Not
|
|
* available on all platforms.
|
|
*
|
|
* Process.getpgid(Process.ppid()) #=> 25527
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getpgid(VALUE obj, VALUE pid)
|
|
{
|
|
#if defined(HAVE_GETPGID) && !defined(__CHECKER__)
|
|
rb_pid_t i;
|
|
|
|
rb_secure(2);
|
|
i = getpgid(NUM2PIDT(pid));
|
|
if (i < 0) rb_sys_fail(0);
|
|
return PIDT2NUM(i);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.setpgid(pid, integer) => 0
|
|
*
|
|
* Sets the process group ID of _pid_ (0 indicates this
|
|
* process) to <em>integer</em>. Not available on all platforms.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setpgid(VALUE obj, VALUE pid, VALUE pgrp)
|
|
{
|
|
#ifdef HAVE_SETPGID
|
|
rb_pid_t ipid, ipgrp;
|
|
|
|
rb_secure(2);
|
|
ipid = NUM2PIDT(pid);
|
|
ipgrp = NUM2PIDT(pgrp);
|
|
|
|
if (setpgid(ipid, ipgrp) < 0) rb_sys_fail(0);
|
|
return INT2FIX(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.setsid => fixnum
|
|
*
|
|
* Establishes this process as a new session and process group
|
|
* leader, with no controlling tty. Returns the session id. Not
|
|
* available on all platforms.
|
|
*
|
|
* Process.setsid #=> 27422
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setsid(void)
|
|
{
|
|
#if defined(HAVE_SETSID)
|
|
rb_pid_t pid;
|
|
|
|
rb_secure(2);
|
|
pid = setsid();
|
|
if (pid < 0) rb_sys_fail(0);
|
|
return PIDT2NUM(pid);
|
|
#elif defined(HAVE_SETPGRP) && defined(TIOCNOTTY)
|
|
rb_pid_t pid;
|
|
int ret;
|
|
|
|
rb_secure(2);
|
|
pid = getpid();
|
|
#if defined(SETPGRP_VOID)
|
|
ret = setpgrp();
|
|
/* If `pid_t setpgrp(void)' is equivalent to setsid(),
|
|
`ret' will be the same value as `pid', and following open() will fail.
|
|
In Linux, `int setpgrp(void)' is equivalent to setpgid(0, 0). */
|
|
#else
|
|
ret = setpgrp(0, pid);
|
|
#endif
|
|
if (ret == -1) rb_sys_fail(0);
|
|
|
|
if ((fd = open("/dev/tty", O_RDWR)) >= 0) {
|
|
ioctl(fd, TIOCNOTTY, NULL);
|
|
close(fd);
|
|
}
|
|
return PIDT2NUM(pid);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.getpriority(kind, integer) => fixnum
|
|
*
|
|
* Gets the scheduling priority for specified process, process group,
|
|
* or user. <em>kind</em> indicates the kind of entity to find: one
|
|
* of <code>Process::PRIO_PGRP</code>,
|
|
* <code>Process::PRIO_USER</code>, or
|
|
* <code>Process::PRIO_PROCESS</code>. _integer_ is an id
|
|
* indicating the particular process, process group, or user (an id
|
|
* of 0 means _current_). Lower priorities are more favorable
|
|
* for scheduling. Not available on all platforms.
|
|
*
|
|
* Process.getpriority(Process::PRIO_USER, 0) #=> 19
|
|
* Process.getpriority(Process::PRIO_PROCESS, 0) #=> 19
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getpriority(VALUE obj, VALUE which, VALUE who)
|
|
{
|
|
#ifdef HAVE_GETPRIORITY
|
|
int prio, iwhich, iwho;
|
|
|
|
rb_secure(2);
|
|
iwhich = NUM2INT(which);
|
|
iwho = NUM2INT(who);
|
|
|
|
errno = 0;
|
|
prio = getpriority(iwhich, iwho);
|
|
if (errno) rb_sys_fail(0);
|
|
return INT2FIX(prio);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.setpriority(kind, integer, priority) => 0
|
|
*
|
|
* See <code>Process#getpriority</code>.
|
|
*
|
|
* Process.setpriority(Process::PRIO_USER, 0, 19) #=> 0
|
|
* Process.setpriority(Process::PRIO_PROCESS, 0, 19) #=> 0
|
|
* Process.getpriority(Process::PRIO_USER, 0) #=> 19
|
|
* Process.getpriority(Process::PRIO_PROCESS, 0) #=> 19
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setpriority(VALUE obj, VALUE which, VALUE who, VALUE prio)
|
|
{
|
|
#ifdef HAVE_GETPRIORITY
|
|
int iwhich, iwho, iprio;
|
|
|
|
rb_secure(2);
|
|
iwhich = NUM2INT(which);
|
|
iwho = NUM2INT(who);
|
|
iprio = NUM2INT(prio);
|
|
|
|
if (setpriority(iwhich, iwho, iprio) < 0)
|
|
rb_sys_fail(0);
|
|
return INT2FIX(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
#if defined(RLIM2NUM)
|
|
static int
|
|
rlimit_resource_name2int(const char *name, int casetype)
|
|
{
|
|
size_t len = strlen(name);
|
|
if (16 < len) return -1;
|
|
if (casetype == 1) {
|
|
int i;
|
|
char *name2 = ALLOCA_N(char, len+1);
|
|
for (i = 0; i < len; i++) {
|
|
if (!ISLOWER(name[i]))
|
|
return -1;
|
|
name2[i] = TOUPPER(name[i]);
|
|
}
|
|
name2[len] = '\0';
|
|
name = name2;
|
|
}
|
|
|
|
switch (*name) {
|
|
case 'A':
|
|
#ifdef RLIMIT_AS
|
|
if (strcmp(name, "AS") == 0) return RLIMIT_AS;
|
|
#endif
|
|
break;
|
|
|
|
case 'C':
|
|
#ifdef RLIMIT_CORE
|
|
if (strcmp(name, "CORE") == 0) return RLIMIT_CORE;
|
|
#endif
|
|
#ifdef RLIMIT_CPU
|
|
if (strcmp(name, "CPU") == 0) return RLIMIT_CPU;
|
|
#endif
|
|
break;
|
|
|
|
case 'D':
|
|
#ifdef RLIMIT_DATA
|
|
if (strcmp(name, "DATA") == 0) return RLIMIT_DATA;
|
|
#endif
|
|
break;
|
|
|
|
case 'F':
|
|
#ifdef RLIMIT_FSIZE
|
|
if (strcmp(name, "FSIZE") == 0) return RLIMIT_FSIZE;
|
|
#endif
|
|
break;
|
|
|
|
case 'M':
|
|
#ifdef RLIMIT_MEMLOCK
|
|
if (strcmp(name, "MEMLOCK") == 0) return RLIMIT_MEMLOCK;
|
|
#endif
|
|
break;
|
|
|
|
case 'N':
|
|
#ifdef RLIMIT_NOFILE
|
|
if (strcmp(name, "NOFILE") == 0) return RLIMIT_NOFILE;
|
|
#endif
|
|
#ifdef RLIMIT_NPROC
|
|
if (strcmp(name, "NPROC") == 0) return RLIMIT_NPROC;
|
|
#endif
|
|
break;
|
|
|
|
case 'R':
|
|
#ifdef RLIMIT_RSS
|
|
if (strcmp(name, "RSS") == 0) return RLIMIT_RSS;
|
|
#endif
|
|
break;
|
|
|
|
case 'S':
|
|
#ifdef RLIMIT_STACK
|
|
if (strcmp(name, "STACK") == 0) return RLIMIT_STACK;
|
|
#endif
|
|
#ifdef RLIMIT_SBSIZE
|
|
if (strcmp(name, "SBSIZE") == 0) return RLIMIT_SBSIZE;
|
|
#endif
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
rlimit_type_by_hname(const char *name)
|
|
{
|
|
return rlimit_resource_name2int(name, 0);
|
|
}
|
|
|
|
static int
|
|
rlimit_type_by_lname(const char *name)
|
|
{
|
|
return rlimit_resource_name2int(name, 1);
|
|
}
|
|
|
|
static int
|
|
rlimit_resource_type(VALUE rtype)
|
|
{
|
|
const char *name;
|
|
VALUE v;
|
|
int r;
|
|
|
|
switch (TYPE(rtype)) {
|
|
case T_SYMBOL:
|
|
name = rb_id2name(SYM2ID(rtype));
|
|
break;
|
|
|
|
default:
|
|
v = rb_check_string_type(rtype);
|
|
if (!NIL_P(v)) {
|
|
rtype = v;
|
|
case T_STRING:
|
|
name = StringValueCStr(rtype);
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
case T_FIXNUM:
|
|
case T_BIGNUM:
|
|
return NUM2INT(rtype);
|
|
}
|
|
|
|
r = rlimit_type_by_hname(name);
|
|
if (r != -1)
|
|
return r;
|
|
|
|
rb_raise(rb_eArgError, "invalid resource name: %s", name);
|
|
}
|
|
|
|
static rlim_t
|
|
rlimit_resource_value(VALUE rval)
|
|
{
|
|
const char *name;
|
|
VALUE v;
|
|
|
|
switch (TYPE(rval)) {
|
|
case T_SYMBOL:
|
|
name = rb_id2name(SYM2ID(rval));
|
|
break;
|
|
|
|
default:
|
|
v = rb_check_string_type(rval);
|
|
if (!NIL_P(v)) {
|
|
rval = v;
|
|
case T_STRING:
|
|
name = StringValueCStr(rval);
|
|
break;
|
|
}
|
|
/* fall through */
|
|
|
|
case T_FIXNUM:
|
|
case T_BIGNUM:
|
|
return NUM2RLIM(rval);
|
|
}
|
|
|
|
#ifdef RLIM_INFINITY
|
|
if (strcmp(name, "INFINITY") == 0) return RLIM_INFINITY;
|
|
#endif
|
|
#ifdef RLIM_SAVED_MAX
|
|
if (strcmp(name, "SAVED_MAX") == 0) return RLIM_SAVED_MAX;
|
|
#endif
|
|
#ifdef RLIM_SAVED_CUR
|
|
if (strcmp(name, "SAVED_CUR") == 0) return RLIM_SAVED_CUR;
|
|
#endif
|
|
rb_raise(rb_eArgError, "invalid resource value: %s", name);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.getrlimit(resource) => [cur_limit, max_limit]
|
|
*
|
|
* Gets the resource limit of the process.
|
|
* _cur_limit_ means current (soft) limit and
|
|
* _max_limit_ means maximum (hard) limit.
|
|
*
|
|
* _resource_ indicates the kind of resource to limit.
|
|
* It is specified as a symbol such as <code>:CORE</code>,
|
|
* a string such as <code>"CORE"</code> or
|
|
* a constant such as <code>Process::RLIMIT_CORE</code>.
|
|
* See Process.setrlimit for details.
|
|
*
|
|
* _cur_limit_ and _max_limit_ may be <code>Process::RLIM_INFINITY</code>,
|
|
* <code>Process::RLIM_SAVED_MAX</code> or
|
|
* <code>Process::RLIM_SAVED_CUR</code>.
|
|
* See Process.setrlimit and the system getrlimit(2) manual for details.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getrlimit(VALUE obj, VALUE resource)
|
|
{
|
|
#if defined(HAVE_GETRLIMIT) && defined(RLIM2NUM)
|
|
struct rlimit rlim;
|
|
|
|
rb_secure(2);
|
|
|
|
if (getrlimit(rlimit_resource_type(resource), &rlim) < 0) {
|
|
rb_sys_fail("getrlimit");
|
|
}
|
|
return rb_assoc_new(RLIM2NUM(rlim.rlim_cur), RLIM2NUM(rlim.rlim_max));
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.setrlimit(resource, cur_limit, max_limit) => nil
|
|
* Process.setrlimit(resource, cur_limit) => nil
|
|
*
|
|
* Sets the resource limit of the process.
|
|
* _cur_limit_ means current (soft) limit and
|
|
* _max_limit_ means maximum (hard) limit.
|
|
*
|
|
* If _max_limit_ is not given, _cur_limit_ is used.
|
|
*
|
|
* _resource_ indicates the kind of resource to limit.
|
|
* It should be a symbol such as <code>:CORE</code>,
|
|
* a string such as <code>"CORE"</code> or
|
|
* a constant such as <code>Process::RLIMIT_CORE</code>.
|
|
* The available resources are OS dependent.
|
|
* Ruby may support following resources.
|
|
*
|
|
* [CORE] core size (bytes) (SUSv3)
|
|
* [CPU] CPU time (seconds) (SUSv3)
|
|
* [DATA] data segment (bytes) (SUSv3)
|
|
* [FSIZE] file size (bytes) (SUSv3)
|
|
* [NOFILE] file descriptors (number) (SUSv3)
|
|
* [STACK] stack size (bytes) (SUSv3)
|
|
* [AS] total available memory (bytes) (SUSv3, NetBSD, FreeBSD, OpenBSD but 4.4BSD-Lite)
|
|
* [MEMLOCK] total size for mlock(2) (bytes) (4.4BSD, GNU/Linux)
|
|
* [NPROC] number of processes for the user (number) (4.4BSD, GNU/Linux)
|
|
* [RSS] resident memory size (bytes) (4.2BSD, GNU/Linux)
|
|
* [SBSIZE] all socket buffers (bytes) (NetBSD, FreeBSD)
|
|
*
|
|
* _cur_limit_ and _max_limit_ may be
|
|
* <code>:INFINITY</code>, <code>"INFINITY"</code> or
|
|
* <code>Process::RLIM_INFINITY</code>,
|
|
* which means that the resource is not limited.
|
|
* They may be <code>Process::RLIM_SAVED_MAX</code>,
|
|
* <code>Process::RLIM_SAVED_CUR</code> and
|
|
* corresponding symbols and strings too.
|
|
* See system setrlimit(2) manual for details.
|
|
*
|
|
* The following example raise the soft limit of core size to
|
|
* the hard limit to try to make core dump possible.
|
|
*
|
|
* Process.setrlimit(:CORE, Process.getrlimit(:CORE)[1])
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setrlimit(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
#if defined(HAVE_SETRLIMIT) && defined(NUM2RLIM)
|
|
VALUE resource, rlim_cur, rlim_max;
|
|
struct rlimit rlim;
|
|
|
|
rb_secure(2);
|
|
|
|
rb_scan_args(argc, argv, "21", &resource, &rlim_cur, &rlim_max);
|
|
if (rlim_max == Qnil)
|
|
rlim_max = rlim_cur;
|
|
|
|
rlim.rlim_cur = rlimit_resource_value(rlim_cur);
|
|
rlim.rlim_max = rlimit_resource_value(rlim_max);
|
|
|
|
if (setrlimit(rlimit_resource_type(resource), &rlim) < 0) {
|
|
rb_sys_fail("setrlimit");
|
|
}
|
|
return Qnil;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
static int under_uid_switch = 0;
|
|
static void
|
|
check_uid_switch(void)
|
|
{
|
|
rb_secure(2);
|
|
if (under_uid_switch) {
|
|
rb_raise(rb_eRuntimeError, "can't handle UID while evaluating block given to Process::UID.switch method");
|
|
}
|
|
}
|
|
|
|
static int under_gid_switch = 0;
|
|
static void
|
|
check_gid_switch(void)
|
|
{
|
|
rb_secure(2);
|
|
if (under_gid_switch) {
|
|
rb_raise(rb_eRuntimeError, "can't handle GID while evaluating block given to Process::UID.switch method");
|
|
}
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
* Document-class: Process::Sys
|
|
*
|
|
* The <code>Process::Sys</code> module contains UID and GID
|
|
* functions which provide direct bindings to the system calls of the
|
|
* same names instead of the more-portable versions of the same
|
|
* functionality found in the <code>Process</code>,
|
|
* <code>Process::UID</code>, and <code>Process::GID</code> modules.
|
|
*/
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setuid(integer) => nil
|
|
*
|
|
* Set the user ID of the current process to _integer_. Not
|
|
* available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setuid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETUID
|
|
check_uid_switch();
|
|
if (setuid(NUM2UIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setruid(integer) => nil
|
|
*
|
|
* Set the real user ID of the calling process to _integer_.
|
|
* Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setruid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETRUID
|
|
check_uid_switch();
|
|
if (setruid(NUM2UIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.seteuid(integer) => nil
|
|
*
|
|
* Set the effective user ID of the calling process to
|
|
* _integer_. Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_seteuid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETEUID
|
|
check_uid_switch();
|
|
if (seteuid(NUM2UIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setreuid(rid, eid) => nil
|
|
*
|
|
* Sets the (integer) real and/or effective user IDs of the current
|
|
* process to _rid_ and _eid_, respectively. A value of
|
|
* <code>-1</code> for either means to leave that ID unchanged. Not
|
|
* available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setreuid(VALUE obj, VALUE rid, VALUE eid)
|
|
{
|
|
#if defined HAVE_SETREUID
|
|
check_uid_switch();
|
|
if (setreuid(NUM2UIDT(rid),NUM2UIDT(eid)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setresuid(rid, eid, sid) => nil
|
|
*
|
|
* Sets the (integer) real, effective, and saved user IDs of the
|
|
* current process to _rid_, _eid_, and _sid_ respectively. A
|
|
* value of <code>-1</code> for any value means to
|
|
* leave that ID unchanged. Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setresuid(VALUE obj, VALUE rid, VALUE eid, VALUE sid)
|
|
{
|
|
#if defined HAVE_SETRESUID
|
|
check_uid_switch();
|
|
if (setresuid(NUM2UIDT(rid),NUM2UIDT(eid),NUM2UIDT(sid)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.uid => fixnum
|
|
* Process::UID.rid => fixnum
|
|
* Process::Sys.getuid => fixnum
|
|
*
|
|
* Returns the (real) user ID of this process.
|
|
*
|
|
* Process.uid #=> 501
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getuid(VALUE obj)
|
|
{
|
|
rb_uid_t uid = getuid();
|
|
return UIDT2NUM(uid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.uid= integer => numeric
|
|
*
|
|
* Sets the (integer) user ID for this process. Not available on all
|
|
* platforms.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setuid(VALUE obj, VALUE id)
|
|
{
|
|
rb_uid_t uid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = NUM2UIDT(id);
|
|
#if defined(HAVE_SETRESUID) && !defined(__CHECKER__)
|
|
if (setresuid(uid, -1, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETREUID
|
|
if (setreuid(uid, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETRUID
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETUID
|
|
{
|
|
if (geteuid() == uid) {
|
|
if (setuid(uid) < 0) rb_sys_fail(0);
|
|
}
|
|
else {
|
|
rb_notimplement();
|
|
}
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return id;
|
|
}
|
|
|
|
|
|
/********************************************************************
|
|
*
|
|
* Document-class: Process::UID
|
|
*
|
|
* The <code>Process::UID</code> module contains a collection of
|
|
* module functions which can be used to portably get, set, and
|
|
* switch the current process's real, effective, and saved user IDs.
|
|
*
|
|
*/
|
|
|
|
static rb_uid_t SAVED_USER_ID = -1;
|
|
|
|
#ifdef BROKEN_SETREUID
|
|
int
|
|
setreuid(rb_uid_t ruid, rb_uid_t euid)
|
|
{
|
|
if (ruid != -1 && ruid != getuid()) {
|
|
if (euid == -1) euid = geteuid();
|
|
if (setuid(ruid) < 0) return -1;
|
|
}
|
|
if (euid != -1 && euid != geteuid()) {
|
|
if (seteuid(euid) < 0) return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.change_privilege(integer) => fixnum
|
|
*
|
|
* Change the current process's real and effective user ID to that
|
|
* specified by _integer_. Returns the new user ID. Not
|
|
* available on all platforms.
|
|
*
|
|
* [Process.uid, Process.euid] #=> [0, 0]
|
|
* Process::UID.change_privilege(31) #=> 31
|
|
* [Process.uid, Process.euid] #=> [31, 31]
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_change_privilege(VALUE obj, VALUE id)
|
|
{
|
|
rb_uid_t uid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = NUM2UIDT(id);
|
|
|
|
if (geteuid() == 0) { /* root-user */
|
|
#if defined(HAVE_SETRESUID)
|
|
if (setresuid(uid, uid, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
#elif defined(HAVE_SETUID)
|
|
if (setuid(uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
|
|
if (getuid() == uid) {
|
|
if (SAVED_USER_ID == uid) {
|
|
if (setreuid(-1, uid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (uid == 0) { /* (r,e,s) == (root, root, x) */
|
|
if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0);
|
|
if (setreuid(SAVED_USER_ID, 0) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = 0; /* (r,e,s) == (x, root, root) */
|
|
if (setreuid(uid, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
} else {
|
|
if (setreuid(0, -1) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = 0;
|
|
if (setreuid(uid, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
}
|
|
}
|
|
} else {
|
|
if (setreuid(uid, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
}
|
|
#elif defined(HAVE_SETRUID) && defined(HAVE_SETEUID)
|
|
if (getuid() == uid) {
|
|
if (SAVED_USER_ID == uid) {
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (uid == 0) {
|
|
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = 0;
|
|
if (setruid(0) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (setruid(0) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = 0;
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
}
|
|
}
|
|
} else {
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
} else { /* unprivileged user */
|
|
#if defined(HAVE_SETRESUID)
|
|
if (setresuid((getuid() == uid)? -1: uid,
|
|
(geteuid() == uid)? -1: uid,
|
|
(SAVED_USER_ID == uid)? -1: uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
|
|
if (SAVED_USER_ID == uid) {
|
|
if (setreuid((getuid() == uid)? -1: uid,
|
|
(geteuid() == uid)? -1: uid) < 0) rb_sys_fail(0);
|
|
} else if (getuid() != uid) {
|
|
if (setreuid(uid, (geteuid() == uid)? -1: uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
} else if (/* getuid() == uid && */ geteuid() != uid) {
|
|
if (setreuid(geteuid(), uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
if (setreuid(uid, -1) < 0) rb_sys_fail(0);
|
|
} else { /* getuid() == uid && geteuid() == uid */
|
|
if (setreuid(-1, SAVED_USER_ID) < 0) rb_sys_fail(0);
|
|
if (setreuid(SAVED_USER_ID, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
if (setreuid(uid, -1) < 0) rb_sys_fail(0);
|
|
}
|
|
#elif defined(HAVE_SETRUID) && defined(HAVE_SETEUID)
|
|
if (SAVED_USER_ID == uid) {
|
|
if (geteuid() != uid && seteuid(uid) < 0) rb_sys_fail(0);
|
|
if (getuid() != uid && setruid(uid) < 0) rb_sys_fail(0);
|
|
} else if (/* SAVED_USER_ID != uid && */ geteuid() == uid) {
|
|
if (getuid() != uid) {
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
} else {
|
|
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
}
|
|
} else if (/* geteuid() != uid && */ getuid() == uid) {
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
if (setruid(SAVED_USER_ID) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
if (setruid(uid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_44BSD_SETUID
|
|
if (getuid() == uid) {
|
|
/* (r,e,s)==(uid,?,?) ==> (uid,uid,uid) */
|
|
if (setuid(uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_SETEUID
|
|
if (getuid() == uid && SAVED_USER_ID == uid) {
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_SETUID
|
|
if (getuid() == uid && SAVED_USER_ID == uid) {
|
|
if (setuid(uid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
return id;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setgid(integer) => nil
|
|
*
|
|
* Set the group ID of the current process to _integer_. Not
|
|
* available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setgid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETGID
|
|
check_gid_switch();
|
|
if (setgid(NUM2GIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setrgid(integer) => nil
|
|
*
|
|
* Set the real group ID of the calling process to _integer_.
|
|
* Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setrgid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETRGID
|
|
check_gid_switch();
|
|
if (setrgid(NUM2GIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setegid(integer) => nil
|
|
*
|
|
* Set the effective group ID of the calling process to
|
|
* _integer_. Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setegid(VALUE obj, VALUE id)
|
|
{
|
|
#if defined HAVE_SETEGID
|
|
check_gid_switch();
|
|
if (setegid(NUM2GIDT(id)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setregid(rid, eid) => nil
|
|
*
|
|
* Sets the (integer) real and/or effective group IDs of the current
|
|
* process to <em>rid</em> and <em>eid</em>, respectively. A value of
|
|
* <code>-1</code> for either means to leave that ID unchanged. Not
|
|
* available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setregid(VALUE obj, VALUE rid, VALUE eid)
|
|
{
|
|
#if defined HAVE_SETREGID
|
|
check_gid_switch();
|
|
if (setregid(NUM2GIDT(rid),NUM2GIDT(eid)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.setresgid(rid, eid, sid) => nil
|
|
*
|
|
* Sets the (integer) real, effective, and saved user IDs of the
|
|
* current process to <em>rid</em>, <em>eid</em>, and <em>sid</em>
|
|
* respectively. A value of <code>-1</code> for any value means to
|
|
* leave that ID unchanged. Not available on all platforms.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_setresgid(VALUE obj, VALUE rid, VALUE eid, VALUE sid)
|
|
{
|
|
#if defined HAVE_SETRESGID
|
|
check_gid_switch();
|
|
if (setresgid(NUM2GIDT(rid),NUM2GIDT(eid),NUM2GIDT(sid)) != 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::Sys.issetugid => true or false
|
|
*
|
|
* Returns +true+ if the process was created as a result
|
|
* of an execve(2) system call which had either of the setuid or
|
|
* setgid bits set (and extra privileges were given as a result) or
|
|
* if it has changed any of its real, effective or saved user or
|
|
* group IDs since it began execution.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_sys_issetugid(VALUE obj)
|
|
{
|
|
#if defined HAVE_ISSETUGID
|
|
rb_secure(2);
|
|
if (issetugid()) {
|
|
return Qtrue;
|
|
} else {
|
|
return Qfalse;
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
return Qnil; /* not reached */
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.gid => fixnum
|
|
* Process::GID.rid => fixnum
|
|
* Process::Sys.getgid => fixnum
|
|
*
|
|
* Returns the (real) group ID for this process.
|
|
*
|
|
* Process.gid #=> 500
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getgid(VALUE obj)
|
|
{
|
|
rb_gid_t gid = getgid();
|
|
return GIDT2NUM(gid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.gid= fixnum => fixnum
|
|
*
|
|
* Sets the group ID for this process.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setgid(VALUE obj, VALUE id)
|
|
{
|
|
rb_gid_t gid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = NUM2GIDT(id);
|
|
#if defined(HAVE_SETRESGID) && !defined(__CHECKER__)
|
|
if (setresgid(gid, -1, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETREGID
|
|
if (setregid(gid, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETRGID
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETGID
|
|
{
|
|
if (getegid() == gid) {
|
|
if (setgid(gid) < 0) rb_sys_fail(0);
|
|
}
|
|
else {
|
|
rb_notimplement();
|
|
}
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return GIDT2NUM(gid);
|
|
}
|
|
|
|
|
|
static size_t maxgroups = 32;
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.groups => array
|
|
*
|
|
* Get an <code>Array</code> of the gids of groups in the
|
|
* supplemental group access list for this process.
|
|
*
|
|
* Process.groups #=> [27, 6, 10, 11]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getgroups(VALUE obj)
|
|
{
|
|
#ifdef HAVE_GETGROUPS
|
|
VALUE ary;
|
|
size_t ngroups;
|
|
rb_gid_t *groups;
|
|
int i;
|
|
|
|
groups = ALLOCA_N(rb_gid_t, maxgroups);
|
|
|
|
ngroups = getgroups(maxgroups, groups);
|
|
if (ngroups == -1)
|
|
rb_sys_fail(0);
|
|
|
|
ary = rb_ary_new();
|
|
for (i = 0; i < ngroups; i++)
|
|
rb_ary_push(ary, GIDT2NUM(groups[i]));
|
|
|
|
return ary;
|
|
#else
|
|
rb_notimplement();
|
|
return Qnil;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.groups= array => array
|
|
*
|
|
* Set the supplemental group access list to the given
|
|
* <code>Array</code> of group IDs.
|
|
*
|
|
* Process.groups #=> [0, 1, 2, 3, 4, 6, 10, 11, 20, 26, 27]
|
|
* Process.groups = [27, 6, 10, 11] #=> [27, 6, 10, 11]
|
|
* Process.groups #=> [27, 6, 10, 11]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setgroups(VALUE obj, VALUE ary)
|
|
{
|
|
#ifdef HAVE_SETGROUPS
|
|
size_t ngroups;
|
|
rb_gid_t *groups;
|
|
int i;
|
|
struct group *gr;
|
|
|
|
Check_Type(ary, T_ARRAY);
|
|
|
|
ngroups = RARRAY_LEN(ary);
|
|
if (ngroups > maxgroups)
|
|
rb_raise(rb_eArgError, "too many groups, %lu max", (unsigned long)maxgroups);
|
|
|
|
groups = ALLOCA_N(rb_gid_t, ngroups);
|
|
|
|
for (i = 0; i < ngroups && i < RARRAY_LEN(ary); i++) {
|
|
VALUE g = RARRAY_PTR(ary)[i];
|
|
|
|
if (FIXNUM_P(g)) {
|
|
groups[i] = NUM2GIDT(g);
|
|
}
|
|
else {
|
|
VALUE tmp = rb_check_string_type(g);
|
|
|
|
if (NIL_P(tmp)) {
|
|
groups[i] = NUM2GIDT(g);
|
|
}
|
|
else {
|
|
gr = getgrnam(RSTRING_PTR(tmp));
|
|
if (gr == NULL)
|
|
rb_raise(rb_eArgError,
|
|
"can't find group for %s", RSTRING_PTR(tmp));
|
|
groups[i] = gr->gr_gid;
|
|
}
|
|
}
|
|
}
|
|
|
|
i = setgroups(ngroups, groups);
|
|
if (i == -1)
|
|
rb_sys_fail(0);
|
|
|
|
return proc_getgroups(obj);
|
|
#else
|
|
rb_notimplement();
|
|
return Qnil;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.initgroups(username, gid) => array
|
|
*
|
|
* Initializes the supplemental group access list by reading the
|
|
* system group database and using all groups of which the given user
|
|
* is a member. The group with the specified <em>gid</em> is also
|
|
* added to the list. Returns the resulting <code>Array</code> of the
|
|
* gids of all the groups in the supplementary group access list. Not
|
|
* available on all platforms.
|
|
*
|
|
* Process.groups #=> [0, 1, 2, 3, 4, 6, 10, 11, 20, 26, 27]
|
|
* Process.initgroups( "mgranger", 30 ) #=> [30, 6, 10, 11]
|
|
* Process.groups #=> [30, 6, 10, 11]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
proc_initgroups(VALUE obj, VALUE uname, VALUE base_grp)
|
|
{
|
|
#ifdef HAVE_INITGROUPS
|
|
if (initgroups(StringValuePtr(uname), NUM2GIDT(base_grp)) != 0) {
|
|
rb_sys_fail(0);
|
|
}
|
|
return proc_getgroups(obj);
|
|
#else
|
|
rb_notimplement();
|
|
return Qnil;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.maxgroups => fixnum
|
|
*
|
|
* Returns the maximum number of gids allowed in the supplemental
|
|
* group access list.
|
|
*
|
|
* Process.maxgroups #=> 32
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getmaxgroups(VALUE obj)
|
|
{
|
|
return INT2FIX(maxgroups);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.maxgroups= fixnum => fixnum
|
|
*
|
|
* Sets the maximum number of gids allowed in the supplemental group
|
|
* access list.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setmaxgroups(VALUE obj, VALUE val)
|
|
{
|
|
size_t ngroups = FIX2INT(val);
|
|
|
|
if (ngroups > 4096)
|
|
ngroups = 4096;
|
|
|
|
maxgroups = ngroups;
|
|
|
|
return INT2FIX(maxgroups);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.daemon() => fixnum
|
|
* Process.daemon(nochdir=nil,noclose=nil) => fixnum
|
|
*
|
|
* Detach the process from controlling terminal and run in
|
|
* the background as system daemon. Unless the argument
|
|
* nochdir is true (i.e. non false), it changes the current
|
|
* working directory to the root ("/"). Unless the argument
|
|
* noclose is true, daemon() will redirect standard input,
|
|
* standard output and standard error to /dev/null.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_daemon(int argc, VALUE *argv)
|
|
{
|
|
VALUE nochdir, noclose;
|
|
#if defined(HAVE_DAEMON) || defined(HAVE_FORK)
|
|
int n;
|
|
#endif
|
|
|
|
rb_secure(2);
|
|
rb_scan_args(argc, argv, "02", &nochdir, &noclose);
|
|
|
|
#if defined(HAVE_DAEMON)
|
|
n = daemon(RTEST(nochdir), RTEST(noclose));
|
|
if (n < 0) rb_sys_fail("daemon");
|
|
return INT2FIX(n);
|
|
#elif defined(HAVE_FORK)
|
|
switch (rb_fork(0, 0, 0, Qnil)) {
|
|
case -1:
|
|
return (-1);
|
|
case 0:
|
|
break;
|
|
default:
|
|
_exit(0);
|
|
}
|
|
|
|
proc_setsid();
|
|
|
|
if (!RTEST(nochdir))
|
|
(void)chdir("/");
|
|
|
|
if (!RTEST(noclose) && (n = open("/dev/null", O_RDWR, 0)) != -1) {
|
|
(void)dup2(n, 0);
|
|
(void)dup2(n, 1);
|
|
(void)dup2(n, 2);
|
|
if (n > 2)
|
|
(void)close (n);
|
|
}
|
|
return INT2FIX(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
/********************************************************************
|
|
*
|
|
* Document-class: Process::GID
|
|
*
|
|
* The <code>Process::GID</code> module contains a collection of
|
|
* module functions which can be used to portably get, set, and
|
|
* switch the current process's real, effective, and saved group IDs.
|
|
*
|
|
*/
|
|
|
|
static int SAVED_GROUP_ID = -1;
|
|
|
|
#ifdef BROKEN_SETREGID
|
|
int
|
|
setregid(rb_gid_t rgid, rb_gid_t egid)
|
|
{
|
|
if (rgid != -1 && rgid != getgid()) {
|
|
if (egid == -1) egid = getegid();
|
|
if (setgid(rgid) < 0) return -1;
|
|
}
|
|
if (egid != -1 && egid != getegid()) {
|
|
if (setegid(egid) < 0) return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.change_privilege(integer) => fixnum
|
|
*
|
|
* Change the current process's real and effective group ID to that
|
|
* specified by _integer_. Returns the new group ID. Not
|
|
* available on all platforms.
|
|
*
|
|
* [Process.gid, Process.egid] #=> [0, 0]
|
|
* Process::GID.change_privilege(33) #=> 33
|
|
* [Process.gid, Process.egid] #=> [33, 33]
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_change_privilege(VALUE obj, VALUE id)
|
|
{
|
|
rb_gid_t gid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = NUM2GIDT(id);
|
|
|
|
if (geteuid() == 0) { /* root-user */
|
|
#if defined(HAVE_SETRESGID)
|
|
if (setresgid(gid, gid, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
#elif defined HAVE_SETGID
|
|
if (setgid(gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
|
|
if (getgid() == gid) {
|
|
if (SAVED_GROUP_ID == gid) {
|
|
if (setregid(-1, gid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (gid == 0) { /* (r,e,s) == (root, y, x) */
|
|
if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0);
|
|
if (setregid(SAVED_GROUP_ID, 0) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = 0; /* (r,e,s) == (x, root, root) */
|
|
if (setregid(gid, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
} else { /* (r,e,s) == (z, y, x) */
|
|
if (setregid(0, 0) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = 0;
|
|
if (setregid(gid, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
}
|
|
}
|
|
} else {
|
|
if (setregid(gid, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
}
|
|
#elif defined(HAVE_SETRGID) && defined (HAVE_SETEGID)
|
|
if (getgid() == gid) {
|
|
if (SAVED_GROUP_ID == gid) {
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (gid == 0) {
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = 0;
|
|
if (setrgid(0) < 0) rb_sys_fail(0);
|
|
} else {
|
|
if (setrgid(0) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = 0;
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
}
|
|
}
|
|
} else {
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
} else { /* unprivileged user */
|
|
#if defined(HAVE_SETRESGID)
|
|
if (setresgid((getgid() == gid)? -1: gid,
|
|
(getegid() == gid)? -1: gid,
|
|
(SAVED_GROUP_ID == gid)? -1: gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
|
|
if (SAVED_GROUP_ID == gid) {
|
|
if (setregid((getgid() == gid)? -1: gid,
|
|
(getegid() == gid)? -1: gid) < 0) rb_sys_fail(0);
|
|
} else if (getgid() != gid) {
|
|
if (setregid(gid, (getegid() == gid)? -1: gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
} else if (/* getgid() == gid && */ getegid() != gid) {
|
|
if (setregid(getegid(), gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
if (setregid(gid, -1) < 0) rb_sys_fail(0);
|
|
} else { /* getgid() == gid && getegid() == gid */
|
|
if (setregid(-1, SAVED_GROUP_ID) < 0) rb_sys_fail(0);
|
|
if (setregid(SAVED_GROUP_ID, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
if (setregid(gid, -1) < 0) rb_sys_fail(0);
|
|
}
|
|
#elif defined(HAVE_SETRGID) && defined(HAVE_SETEGID)
|
|
if (SAVED_GROUP_ID == gid) {
|
|
if (getegid() != gid && setegid(gid) < 0) rb_sys_fail(0);
|
|
if (getgid() != gid && setrgid(gid) < 0) rb_sys_fail(0);
|
|
} else if (/* SAVED_GROUP_ID != gid && */ getegid() == gid) {
|
|
if (getgid() != gid) {
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
} else {
|
|
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
}
|
|
} else if (/* getegid() != gid && */ getgid() == gid) {
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
if (setrgid(SAVED_GROUP_ID) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
if (setrgid(gid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_44BSD_SETGID
|
|
if (getgid() == gid) {
|
|
/* (r,e,s)==(gid,?,?) ==> (gid,gid,gid) */
|
|
if (setgid(gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_SETEGID
|
|
if (getgid() == gid && SAVED_GROUP_ID == gid) {
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#elif defined HAVE_SETGID
|
|
if (getgid() == gid && SAVED_GROUP_ID == gid) {
|
|
if (setgid(gid) < 0) rb_sys_fail(0);
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
return id;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.euid => fixnum
|
|
* Process::UID.eid => fixnum
|
|
* Process::Sys.geteuid => fixnum
|
|
*
|
|
* Returns the effective user ID for this process.
|
|
*
|
|
* Process.euid #=> 501
|
|
*/
|
|
|
|
static VALUE
|
|
proc_geteuid(VALUE obj)
|
|
{
|
|
rb_uid_t euid = geteuid();
|
|
return UIDT2NUM(euid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.euid= integer
|
|
*
|
|
* Sets the effective user ID for this process. Not available on all
|
|
* platforms.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_seteuid(VALUE obj, VALUE euid)
|
|
{
|
|
rb_uid_t uid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = NUM2UIDT(euid);
|
|
#if defined(HAVE_SETRESUID) && !defined(__CHECKER__)
|
|
if (setresuid(-1, uid, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETREUID
|
|
if (setreuid(-1, uid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETEUID
|
|
if (seteuid(uid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETUID
|
|
if (uid == getuid()) {
|
|
if (setuid(uid) < 0) rb_sys_fail(0);
|
|
}
|
|
else {
|
|
rb_notimplement();
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return euid;
|
|
}
|
|
|
|
static rb_uid_t
|
|
rb_seteuid_core(rb_uid_t euid)
|
|
{
|
|
rb_uid_t uid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = getuid();
|
|
|
|
#if defined(HAVE_SETRESUID) && !defined(__CHECKER__)
|
|
if (uid != euid) {
|
|
if (setresuid(-1,euid,euid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = euid;
|
|
} else {
|
|
if (setresuid(-1,euid,-1) < 0) rb_sys_fail(0);
|
|
}
|
|
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
|
|
if (setreuid(-1, euid) < 0) rb_sys_fail(0);
|
|
if (uid != euid) {
|
|
if (setreuid(euid,uid) < 0) rb_sys_fail(0);
|
|
if (setreuid(uid,euid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = euid;
|
|
}
|
|
#elif defined HAVE_SETEUID
|
|
if (seteuid(euid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETUID
|
|
if (geteuid() == 0) rb_sys_fail(0);
|
|
if (setuid(euid) < 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return euid;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.grant_privilege(integer) => fixnum
|
|
* Process::UID.eid= integer => fixnum
|
|
*
|
|
* Set the effective user ID, and if possible, the saved user ID of
|
|
* the process to the given _integer_. Returns the new
|
|
* effective user ID. Not available on all platforms.
|
|
*
|
|
* [Process.uid, Process.euid] #=> [0, 0]
|
|
* Process::UID.grant_privilege(31) #=> 31
|
|
* [Process.uid, Process.euid] #=> [0, 31]
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_grant_privilege(VALUE obj, VALUE id)
|
|
{
|
|
rb_seteuid_core(NUM2UIDT(id));
|
|
return id;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.egid => fixnum
|
|
* Process::GID.eid => fixnum
|
|
* Process::Sys.geteid => fixnum
|
|
*
|
|
* Returns the effective group ID for this process. Not available on
|
|
* all platforms.
|
|
*
|
|
* Process.egid #=> 500
|
|
*/
|
|
|
|
static VALUE
|
|
proc_getegid(VALUE obj)
|
|
{
|
|
rb_gid_t egid = getegid();
|
|
|
|
return GIDT2NUM(egid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.egid = fixnum => fixnum
|
|
*
|
|
* Sets the effective group ID for this process. Not available on all
|
|
* platforms.
|
|
*/
|
|
|
|
static VALUE
|
|
proc_setegid(VALUE obj, VALUE egid)
|
|
{
|
|
rb_gid_t gid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = NUM2GIDT(egid);
|
|
#if defined(HAVE_SETRESGID) && !defined(__CHECKER__)
|
|
if (setresgid(-1, gid, -1) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETREGID
|
|
if (setregid(-1, gid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETEGID
|
|
if (setegid(gid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETGID
|
|
if (gid == getgid()) {
|
|
if (setgid(gid) < 0) rb_sys_fail(0);
|
|
}
|
|
else {
|
|
rb_notimplement();
|
|
}
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return egid;
|
|
}
|
|
|
|
static rb_gid_t
|
|
rb_setegid_core(rb_gid_t egid)
|
|
{
|
|
rb_gid_t gid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = getgid();
|
|
|
|
#if defined(HAVE_SETRESGID) && !defined(__CHECKER__)
|
|
if (gid != egid) {
|
|
if (setresgid(-1,egid,egid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = egid;
|
|
} else {
|
|
if (setresgid(-1,egid,-1) < 0) rb_sys_fail(0);
|
|
}
|
|
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
|
|
if (setregid(-1, egid) < 0) rb_sys_fail(0);
|
|
if (gid != egid) {
|
|
if (setregid(egid,gid) < 0) rb_sys_fail(0);
|
|
if (setregid(gid,egid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = egid;
|
|
}
|
|
#elif defined HAVE_SETEGID
|
|
if (setegid(egid) < 0) rb_sys_fail(0);
|
|
#elif defined HAVE_SETGID
|
|
if (geteuid() == 0 /* root user */) rb_sys_fail(0);
|
|
if (setgid(egid) < 0) rb_sys_fail(0);
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return egid;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.grant_privilege(integer) => fixnum
|
|
* Process::GID.eid = integer => fixnum
|
|
*
|
|
* Set the effective group ID, and if possible, the saved group ID of
|
|
* the process to the given _integer_. Returns the new
|
|
* effective group ID. Not available on all platforms.
|
|
*
|
|
* [Process.gid, Process.egid] #=> [0, 0]
|
|
* Process::GID.grant_privilege(31) #=> 33
|
|
* [Process.gid, Process.egid] #=> [0, 33]
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_grant_privilege(VALUE obj, VALUE id)
|
|
{
|
|
rb_setegid_core(NUM2GIDT(id));
|
|
return id;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.re_exchangeable? => true or false
|
|
*
|
|
* Returns +true+ if the real and effective user IDs of a
|
|
* process may be exchanged on the current platform.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_exchangeable(void)
|
|
{
|
|
#if defined(HAVE_SETRESUID) && !defined(__CHECKER__)
|
|
return Qtrue;
|
|
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
|
|
return Qtrue;
|
|
#else
|
|
return Qfalse;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.re_exchange => fixnum
|
|
*
|
|
* Exchange real and effective user IDs and return the new effective
|
|
* user ID. Not available on all platforms.
|
|
*
|
|
* [Process.uid, Process.euid] #=> [0, 31]
|
|
* Process::UID.re_exchange #=> 0
|
|
* [Process.uid, Process.euid] #=> [31, 0]
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_exchange(VALUE obj)
|
|
{
|
|
rb_uid_t uid, euid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = getuid();
|
|
euid = geteuid();
|
|
|
|
#if defined(HAVE_SETRESUID) && !defined(__CHECKER__)
|
|
if (setresuid(euid, uid, uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
#elif defined(HAVE_SETREUID) && !defined(OBSOLETE_SETREUID)
|
|
if (setreuid(euid,uid) < 0) rb_sys_fail(0);
|
|
SAVED_USER_ID = uid;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return UIDT2NUM(uid);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.re_exchangeable? => true or false
|
|
*
|
|
* Returns +true+ if the real and effective group IDs of a
|
|
* process may be exchanged on the current platform.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_exchangeable(void)
|
|
{
|
|
#if defined(HAVE_SETRESGID) && !defined(__CHECKER__)
|
|
return Qtrue;
|
|
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
|
|
return Qtrue;
|
|
#else
|
|
return Qfalse;
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.re_exchange => fixnum
|
|
*
|
|
* Exchange real and effective group IDs and return the new effective
|
|
* group ID. Not available on all platforms.
|
|
*
|
|
* [Process.gid, Process.egid] #=> [0, 33]
|
|
* Process::GID.re_exchange #=> 0
|
|
* [Process.gid, Process.egid] #=> [33, 0]
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_exchange(VALUE obj)
|
|
{
|
|
rb_gid_t gid, egid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = getgid();
|
|
egid = getegid();
|
|
|
|
#if defined(HAVE_SETRESGID) && !defined(__CHECKER__)
|
|
if (setresgid(egid, gid, gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
#elif defined(HAVE_SETREGID) && !defined(OBSOLETE_SETREGID)
|
|
if (setregid(egid,gid) < 0) rb_sys_fail(0);
|
|
SAVED_GROUP_ID = gid;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
return GIDT2NUM(gid);
|
|
}
|
|
|
|
/* [MG] :FIXME: Is this correct? I'm not sure how to phrase this. */
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.sid_available? => true or false
|
|
*
|
|
* Returns +true+ if the current platform has saved user
|
|
* ID functionality.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_have_saved_id(void)
|
|
{
|
|
#if defined(HAVE_SETRESUID) || defined(HAVE_SETEUID) || defined(_POSIX_SAVED_IDS)
|
|
return Qtrue;
|
|
#else
|
|
return Qfalse;
|
|
#endif
|
|
}
|
|
|
|
|
|
#if defined(HAVE_SETRESUID) || defined(HAVE_SETEUID) || defined(_POSIX_SAVED_IDS)
|
|
static VALUE
|
|
p_uid_sw_ensure(rb_uid_t id)
|
|
{
|
|
under_uid_switch = 0;
|
|
id = rb_seteuid_core(id);
|
|
return UIDT2NUM(id);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::UID.switch => fixnum
|
|
* Process::UID.switch {|| block} => object
|
|
*
|
|
* Switch the effective and real user IDs of the current process. If
|
|
* a <em>block</em> is given, the user IDs will be switched back
|
|
* after the block is executed. Returns the new effective user ID if
|
|
* called without a block, and the return value of the block if one
|
|
* is given.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_uid_switch(VALUE obj)
|
|
{
|
|
rb_uid_t uid, euid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = getuid();
|
|
euid = geteuid();
|
|
|
|
if (uid != euid) {
|
|
proc_seteuid(obj, UIDT2NUM(uid));
|
|
if (rb_block_given_p()) {
|
|
under_uid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, SAVED_USER_ID);
|
|
} else {
|
|
return UIDT2NUM(euid);
|
|
}
|
|
} else if (euid != SAVED_USER_ID) {
|
|
proc_seteuid(obj, UIDT2NUM(SAVED_USER_ID));
|
|
if (rb_block_given_p()) {
|
|
under_uid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, euid);
|
|
} else {
|
|
return UIDT2NUM(uid);
|
|
}
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
}
|
|
#else
|
|
static VALUE
|
|
p_uid_sw_ensure(VALUE obj)
|
|
{
|
|
under_uid_switch = 0;
|
|
return p_uid_exchange(obj);
|
|
}
|
|
|
|
static VALUE
|
|
p_uid_switch(VALUE obj)
|
|
{
|
|
rb_uid_t uid, euid;
|
|
|
|
check_uid_switch();
|
|
|
|
uid = getuid();
|
|
euid = geteuid();
|
|
|
|
if (uid == euid) {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
p_uid_exchange(obj);
|
|
if (rb_block_given_p()) {
|
|
under_uid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_uid_sw_ensure, obj);
|
|
} else {
|
|
return UIDT2NUM(euid);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/* [MG] :FIXME: Is this correct? I'm not sure how to phrase this. */
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.sid_available? => true or false
|
|
*
|
|
* Returns +true+ if the current platform has saved group
|
|
* ID functionality.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_have_saved_id(void)
|
|
{
|
|
#if defined(HAVE_SETRESGID) || defined(HAVE_SETEGID) || defined(_POSIX_SAVED_IDS)
|
|
return Qtrue;
|
|
#else
|
|
return Qfalse;
|
|
#endif
|
|
}
|
|
|
|
#if defined(HAVE_SETRESGID) || defined(HAVE_SETEGID) || defined(_POSIX_SAVED_IDS)
|
|
static VALUE
|
|
p_gid_sw_ensure(rb_gid_t id)
|
|
{
|
|
under_gid_switch = 0;
|
|
id = rb_setegid_core(id);
|
|
return GIDT2NUM(id);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process::GID.switch => fixnum
|
|
* Process::GID.switch {|| block} => object
|
|
*
|
|
* Switch the effective and real group IDs of the current process. If
|
|
* a <em>block</em> is given, the group IDs will be switched back
|
|
* after the block is executed. Returns the new effective group ID if
|
|
* called without a block, and the return value of the block if one
|
|
* is given.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
p_gid_switch(VALUE obj)
|
|
{
|
|
int gid, egid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = getgid();
|
|
egid = getegid();
|
|
|
|
if (gid != egid) {
|
|
proc_setegid(obj, GIDT2NUM(gid));
|
|
if (rb_block_given_p()) {
|
|
under_gid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, SAVED_GROUP_ID);
|
|
} else {
|
|
return GIDT2NUM(egid);
|
|
}
|
|
} else if (egid != SAVED_GROUP_ID) {
|
|
proc_setegid(obj, GIDT2NUM(SAVED_GROUP_ID));
|
|
if (rb_block_given_p()) {
|
|
under_gid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, egid);
|
|
} else {
|
|
return GIDT2NUM(gid);
|
|
}
|
|
} else {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
}
|
|
#else
|
|
static VALUE
|
|
p_gid_sw_ensure(VALUE obj)
|
|
{
|
|
under_gid_switch = 0;
|
|
return p_gid_exchange(obj);
|
|
}
|
|
|
|
static VALUE
|
|
p_gid_switch(VALUE obj)
|
|
{
|
|
rb_gid_t gid, egid;
|
|
|
|
check_gid_switch();
|
|
|
|
gid = getgid();
|
|
egid = getegid();
|
|
|
|
if (gid == egid) {
|
|
errno = EPERM;
|
|
rb_sys_fail(0);
|
|
}
|
|
p_gid_exchange(obj);
|
|
if (rb_block_given_p()) {
|
|
under_gid_switch = 1;
|
|
return rb_ensure(rb_yield, Qnil, p_gid_sw_ensure, obj);
|
|
} else {
|
|
return GIDT2NUM(egid);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Process.times => aStructTms
|
|
*
|
|
* Returns a <code>Tms</code> structure (see <code>Struct::Tms</code>
|
|
* on page 388) that contains user and system CPU times for this
|
|
* process.
|
|
*
|
|
* t = Process.times
|
|
* [ t.utime, t.stime ] #=> [0.0, 0.02]
|
|
*/
|
|
|
|
VALUE
|
|
rb_proc_times(VALUE obj)
|
|
{
|
|
#if defined(HAVE_TIMES) && !defined(__CHECKER__)
|
|
const double hertz =
|
|
#ifdef HAVE__SC_CLK_TCK
|
|
(double)sysconf(_SC_CLK_TCK);
|
|
#else
|
|
#ifndef HZ
|
|
# ifdef CLK_TCK
|
|
# define HZ CLK_TCK
|
|
# else
|
|
# define HZ 60
|
|
# endif
|
|
#endif /* HZ */
|
|
HZ;
|
|
#endif
|
|
struct tms buf;
|
|
volatile VALUE utime, stime, cutime, sctime;
|
|
|
|
times(&buf);
|
|
return rb_struct_new(rb_cProcessTms,
|
|
utime = DOUBLE2NUM(buf.tms_utime / hertz),
|
|
stime = DOUBLE2NUM(buf.tms_stime / hertz),
|
|
cutime = DOUBLE2NUM(buf.tms_cutime / hertz),
|
|
sctime = DOUBLE2NUM(buf.tms_cstime / hertz));
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
}
|
|
|
|
VALUE rb_mProcess;
|
|
VALUE rb_mProcUID;
|
|
VALUE rb_mProcGID;
|
|
VALUE rb_mProcID_Syscall;
|
|
|
|
|
|
/*
|
|
* The <code>Process</code> module is a collection of methods used to
|
|
* manipulate processes.
|
|
*/
|
|
|
|
void
|
|
Init_process(void)
|
|
{
|
|
rb_define_virtual_variable("$?", rb_last_status_get, 0);
|
|
rb_define_virtual_variable("$$", get_pid, 0);
|
|
rb_define_global_function("exec", rb_f_exec, -1);
|
|
rb_define_global_function("fork", rb_f_fork, 0);
|
|
rb_define_global_function("exit!", rb_f_exit_bang, -1);
|
|
rb_define_global_function("system", rb_f_system, -1);
|
|
rb_define_global_function("spawn", rb_f_spawn, -1);
|
|
rb_define_global_function("sleep", rb_f_sleep, -1);
|
|
rb_define_global_function("exit", rb_f_exit, -1);
|
|
rb_define_global_function("abort", rb_f_abort, -1);
|
|
|
|
rb_mProcess = rb_define_module("Process");
|
|
|
|
#ifdef WNOHANG
|
|
rb_define_const(rb_mProcess, "WNOHANG", INT2FIX(WNOHANG));
|
|
#else
|
|
rb_define_const(rb_mProcess, "WNOHANG", INT2FIX(0));
|
|
#endif
|
|
#ifdef WUNTRACED
|
|
rb_define_const(rb_mProcess, "WUNTRACED", INT2FIX(WUNTRACED));
|
|
#else
|
|
rb_define_const(rb_mProcess, "WUNTRACED", INT2FIX(0));
|
|
#endif
|
|
|
|
rb_define_singleton_method(rb_mProcess, "exec", rb_f_exec, -1);
|
|
rb_define_singleton_method(rb_mProcess, "fork", rb_f_fork, 0);
|
|
rb_define_singleton_method(rb_mProcess, "spawn", rb_f_spawn, -1);
|
|
rb_define_singleton_method(rb_mProcess, "exit!", rb_f_exit_bang, -1);
|
|
rb_define_singleton_method(rb_mProcess, "exit", rb_f_exit, -1);
|
|
rb_define_singleton_method(rb_mProcess, "abort", rb_f_abort, -1);
|
|
|
|
rb_define_module_function(rb_mProcess, "kill", rb_f_kill, -1); /* in signal.c */
|
|
rb_define_module_function(rb_mProcess, "wait", proc_wait, -1);
|
|
rb_define_module_function(rb_mProcess, "wait2", proc_wait2, -1);
|
|
rb_define_module_function(rb_mProcess, "waitpid", proc_wait, -1);
|
|
rb_define_module_function(rb_mProcess, "waitpid2", proc_wait2, -1);
|
|
rb_define_module_function(rb_mProcess, "waitall", proc_waitall, 0);
|
|
rb_define_module_function(rb_mProcess, "detach", proc_detach, 1);
|
|
|
|
rb_cProcessStatus = rb_define_class_under(rb_mProcess, "Status", rb_cObject);
|
|
rb_undef_method(CLASS_OF(rb_cProcessStatus), "new");
|
|
|
|
rb_define_method(rb_cProcessStatus, "==", pst_equal, 1);
|
|
rb_define_method(rb_cProcessStatus, "&", pst_bitand, 1);
|
|
rb_define_method(rb_cProcessStatus, ">>", pst_rshift, 1);
|
|
rb_define_method(rb_cProcessStatus, "to_i", pst_to_i, 0);
|
|
rb_define_method(rb_cProcessStatus, "to_s", pst_to_s, 0);
|
|
rb_define_method(rb_cProcessStatus, "inspect", pst_inspect, 0);
|
|
|
|
rb_define_method(rb_cProcessStatus, "pid", pst_pid, 0);
|
|
|
|
rb_define_method(rb_cProcessStatus, "stopped?", pst_wifstopped, 0);
|
|
rb_define_method(rb_cProcessStatus, "stopsig", pst_wstopsig, 0);
|
|
rb_define_method(rb_cProcessStatus, "signaled?", pst_wifsignaled, 0);
|
|
rb_define_method(rb_cProcessStatus, "termsig", pst_wtermsig, 0);
|
|
rb_define_method(rb_cProcessStatus, "exited?", pst_wifexited, 0);
|
|
rb_define_method(rb_cProcessStatus, "exitstatus", pst_wexitstatus, 0);
|
|
rb_define_method(rb_cProcessStatus, "success?", pst_success_p, 0);
|
|
rb_define_method(rb_cProcessStatus, "coredump?", pst_wcoredump, 0);
|
|
|
|
rb_define_module_function(rb_mProcess, "pid", get_pid, 0);
|
|
rb_define_module_function(rb_mProcess, "ppid", get_ppid, 0);
|
|
|
|
rb_define_module_function(rb_mProcess, "getpgrp", proc_getpgrp, 0);
|
|
rb_define_module_function(rb_mProcess, "setpgrp", proc_setpgrp, 0);
|
|
rb_define_module_function(rb_mProcess, "getpgid", proc_getpgid, 1);
|
|
rb_define_module_function(rb_mProcess, "setpgid", proc_setpgid, 2);
|
|
|
|
rb_define_module_function(rb_mProcess, "setsid", proc_setsid, 0);
|
|
|
|
rb_define_module_function(rb_mProcess, "getpriority", proc_getpriority, 2);
|
|
rb_define_module_function(rb_mProcess, "setpriority", proc_setpriority, 3);
|
|
|
|
#ifdef HAVE_GETPRIORITY
|
|
rb_define_const(rb_mProcess, "PRIO_PROCESS", INT2FIX(PRIO_PROCESS));
|
|
rb_define_const(rb_mProcess, "PRIO_PGRP", INT2FIX(PRIO_PGRP));
|
|
rb_define_const(rb_mProcess, "PRIO_USER", INT2FIX(PRIO_USER));
|
|
#endif
|
|
|
|
rb_define_module_function(rb_mProcess, "getrlimit", proc_getrlimit, 1);
|
|
rb_define_module_function(rb_mProcess, "setrlimit", proc_setrlimit, -1);
|
|
#ifdef RLIM2NUM
|
|
{
|
|
VALUE inf = RLIM2NUM(RLIM_INFINITY);
|
|
#ifdef RLIM_SAVED_MAX
|
|
VALUE v = RLIM_INFINITY == RLIM_SAVED_MAX ? inf : RLIM2NUM(RLIM_SAVED_MAX);
|
|
rb_define_const(rb_mProcess, "RLIM_SAVED_MAX", v);
|
|
#endif
|
|
rb_define_const(rb_mProcess, "RLIM_INFINITY", inf);
|
|
#ifdef RLIM_SAVED_CUR
|
|
v = RLIM_INFINITY == RLIM_SAVED_CUR ? inf : RLIM2NUM(RLIM_SAVED_CUR);
|
|
rb_define_const(rb_mProcess, "RLIM_SAVED_CUR", v);
|
|
#endif
|
|
}
|
|
#ifdef RLIMIT_CORE
|
|
rb_define_const(rb_mProcess, "RLIMIT_CORE", INT2FIX(RLIMIT_CORE));
|
|
#endif
|
|
#ifdef RLIMIT_CPU
|
|
rb_define_const(rb_mProcess, "RLIMIT_CPU", INT2FIX(RLIMIT_CPU));
|
|
#endif
|
|
#ifdef RLIMIT_DATA
|
|
rb_define_const(rb_mProcess, "RLIMIT_DATA", INT2FIX(RLIMIT_DATA));
|
|
#endif
|
|
#ifdef RLIMIT_FSIZE
|
|
rb_define_const(rb_mProcess, "RLIMIT_FSIZE", INT2FIX(RLIMIT_FSIZE));
|
|
#endif
|
|
#ifdef RLIMIT_NOFILE
|
|
rb_define_const(rb_mProcess, "RLIMIT_NOFILE", INT2FIX(RLIMIT_NOFILE));
|
|
#endif
|
|
#ifdef RLIMIT_STACK
|
|
rb_define_const(rb_mProcess, "RLIMIT_STACK", INT2FIX(RLIMIT_STACK));
|
|
#endif
|
|
#ifdef RLIMIT_AS
|
|
rb_define_const(rb_mProcess, "RLIMIT_AS", INT2FIX(RLIMIT_AS));
|
|
#endif
|
|
#ifdef RLIMIT_MEMLOCK
|
|
rb_define_const(rb_mProcess, "RLIMIT_MEMLOCK", INT2FIX(RLIMIT_MEMLOCK));
|
|
#endif
|
|
#ifdef RLIMIT_NPROC
|
|
rb_define_const(rb_mProcess, "RLIMIT_NPROC", INT2FIX(RLIMIT_NPROC));
|
|
#endif
|
|
#ifdef RLIMIT_RSS
|
|
rb_define_const(rb_mProcess, "RLIMIT_RSS", INT2FIX(RLIMIT_RSS));
|
|
#endif
|
|
#ifdef RLIMIT_SBSIZE
|
|
rb_define_const(rb_mProcess, "RLIMIT_SBSIZE", INT2FIX(RLIMIT_SBSIZE));
|
|
#endif
|
|
#endif
|
|
|
|
rb_define_module_function(rb_mProcess, "uid", proc_getuid, 0);
|
|
rb_define_module_function(rb_mProcess, "uid=", proc_setuid, 1);
|
|
rb_define_module_function(rb_mProcess, "gid", proc_getgid, 0);
|
|
rb_define_module_function(rb_mProcess, "gid=", proc_setgid, 1);
|
|
rb_define_module_function(rb_mProcess, "euid", proc_geteuid, 0);
|
|
rb_define_module_function(rb_mProcess, "euid=", proc_seteuid, 1);
|
|
rb_define_module_function(rb_mProcess, "egid", proc_getegid, 0);
|
|
rb_define_module_function(rb_mProcess, "egid=", proc_setegid, 1);
|
|
rb_define_module_function(rb_mProcess, "initgroups", proc_initgroups, 2);
|
|
rb_define_module_function(rb_mProcess, "groups", proc_getgroups, 0);
|
|
rb_define_module_function(rb_mProcess, "groups=", proc_setgroups, 1);
|
|
rb_define_module_function(rb_mProcess, "maxgroups", proc_getmaxgroups, 0);
|
|
rb_define_module_function(rb_mProcess, "maxgroups=", proc_setmaxgroups, 1);
|
|
|
|
rb_define_module_function(rb_mProcess, "daemon", proc_daemon, -1);
|
|
|
|
rb_define_module_function(rb_mProcess, "times", rb_proc_times, 0);
|
|
|
|
#if defined(HAVE_TIMES) || defined(_WIN32)
|
|
rb_cProcessTms = rb_struct_define("Tms", "utime", "stime", "cutime", "cstime", NULL);
|
|
#endif
|
|
|
|
SAVED_USER_ID = geteuid();
|
|
SAVED_GROUP_ID = getegid();
|
|
|
|
rb_mProcUID = rb_define_module_under(rb_mProcess, "UID");
|
|
rb_mProcGID = rb_define_module_under(rb_mProcess, "GID");
|
|
|
|
rb_define_module_function(rb_mProcUID, "rid", proc_getuid, 0);
|
|
rb_define_module_function(rb_mProcGID, "rid", proc_getgid, 0);
|
|
rb_define_module_function(rb_mProcUID, "eid", proc_geteuid, 0);
|
|
rb_define_module_function(rb_mProcGID, "eid", proc_getegid, 0);
|
|
rb_define_module_function(rb_mProcUID, "change_privilege", p_uid_change_privilege, 1);
|
|
rb_define_module_function(rb_mProcGID, "change_privilege", p_gid_change_privilege, 1);
|
|
rb_define_module_function(rb_mProcUID, "grant_privilege", p_uid_grant_privilege, 1);
|
|
rb_define_module_function(rb_mProcGID, "grant_privilege", p_gid_grant_privilege, 1);
|
|
rb_define_alias(rb_singleton_class(rb_mProcUID), "eid=", "grant_privilege");
|
|
rb_define_alias(rb_singleton_class(rb_mProcGID), "eid=", "grant_privilege");
|
|
rb_define_module_function(rb_mProcUID, "re_exchange", p_uid_exchange, 0);
|
|
rb_define_module_function(rb_mProcGID, "re_exchange", p_gid_exchange, 0);
|
|
rb_define_module_function(rb_mProcUID, "re_exchangeable?", p_uid_exchangeable, 0);
|
|
rb_define_module_function(rb_mProcGID, "re_exchangeable?", p_gid_exchangeable, 0);
|
|
rb_define_module_function(rb_mProcUID, "sid_available?", p_uid_have_saved_id, 0);
|
|
rb_define_module_function(rb_mProcGID, "sid_available?", p_gid_have_saved_id, 0);
|
|
rb_define_module_function(rb_mProcUID, "switch", p_uid_switch, 0);
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rb_define_module_function(rb_mProcGID, "switch", p_gid_switch, 0);
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rb_mProcID_Syscall = rb_define_module_under(rb_mProcess, "Sys");
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rb_define_module_function(rb_mProcID_Syscall, "getuid", proc_getuid, 0);
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rb_define_module_function(rb_mProcID_Syscall, "geteuid", proc_geteuid, 0);
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rb_define_module_function(rb_mProcID_Syscall, "getgid", proc_getgid, 0);
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rb_define_module_function(rb_mProcID_Syscall, "getegid", proc_getegid, 0);
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rb_define_module_function(rb_mProcID_Syscall, "setuid", p_sys_setuid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "setgid", p_sys_setgid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "setruid", p_sys_setruid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "setrgid", p_sys_setrgid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "seteuid", p_sys_seteuid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "setegid", p_sys_setegid, 1);
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rb_define_module_function(rb_mProcID_Syscall, "setreuid", p_sys_setreuid, 2);
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rb_define_module_function(rb_mProcID_Syscall, "setregid", p_sys_setregid, 2);
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rb_define_module_function(rb_mProcID_Syscall, "setresuid", p_sys_setresuid, 3);
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rb_define_module_function(rb_mProcID_Syscall, "setresgid", p_sys_setresgid, 3);
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rb_define_module_function(rb_mProcID_Syscall, "issetugid", p_sys_issetugid, 0);
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}
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