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* internal.h (rb_execarg): add pgroup_given and pgroup_pgid fields.

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* process.c (EXEC_OPTION_PGROUP): removed.
  (rb_execarg_addopt): update the new fields, instead of options array.
  (run_exec_pgroup): take a struct rb_execarg argument.  refer the new
  fields.
  (rb_execarg_run_options): follow run_exec_pgroup change.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36181 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2012-06-22 11:30:29 +00:00
parent 7b036a8ea7
commit bcadfd9c08
3 changed files with 31 additions and 15 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
Fri Jun 22 20:27:39 2012 Tanaka Akira <akr@fsij.org>
* internal.h (rb_execarg): add pgroup_given and pgroup_pgid fields.
* process.c (EXEC_OPTION_PGROUP): removed.
(rb_execarg_addopt): update the new fields, instead of options array.
(run_exec_pgroup): take a struct rb_execarg argument. refer the new
fields.
(rb_execarg_run_options): follow run_exec_pgroup change.
Fri Jun 22 18:48:51 2012 Kouhei Sutou <kou@cozmixng.org>
* README.EXT, README.EXT.ja: use "sval" for the third argument

2
internal.h
View file

@ -176,7 +176,9 @@ struct rb_execarg {
VALUE envp_str;
VALUE envp_buf;
VALUE dup2_tmpbuf;
unsigned pgroup_given : 1;
unsigned umask_given : 1;
pid_t pgroup_pgid; /* asis(-1), new pgroup(0), specified pgroup (0<V). */
mode_t umask_mask;
};

34
process.c
View file

@ -1254,7 +1254,6 @@ rb_proc_exec(const char *str)
}
enum {
EXEC_OPTION_PGROUP,
EXEC_OPTION_RLIMIT,
EXEC_OPTION_UNSETENV_OTHERS,
EXEC_OPTION_ENV,
@ -1559,21 +1558,22 @@ rb_execarg_addopt(VALUE execarg_obj, VALUE key, VALUE val)
id = SYM2ID(key);
#ifdef HAVE_SETPGID
if (id == rb_intern("pgroup")) {
if (!NIL_P(rb_ary_entry(options, EXEC_OPTION_PGROUP))) {
pid_t pgroup;
if (e->pgroup_given) {
rb_raise(rb_eArgError, "pgroup option specified twice");
}
if (!RTEST(val))
val = Qfalse;
pgroup = -1; /* asis(-1) means "don't call setpgid()". */
else if (val == Qtrue)
val = INT2FIX(0);
pgroup = 0; /* new process group. */
else {
pid_t pgroup = NUM2PIDT(val);
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);
e->pgroup_given = 1;
e->pgroup_pgid = pgroup;
}
else
#endif
@ -2626,22 +2626,27 @@ run_exec_dup2_child(VALUE ary, struct rb_execarg *s, char *errmsg, size_t errmsg
#ifdef HAVE_SETPGID
/* This function should be async-signal-safe when _save_ is Qnil. Actually it is. */
static int
run_exec_pgroup(VALUE obj, struct rb_execarg *s, char *errmsg, size_t errmsg_buflen)
run_exec_pgroup(const struct rb_execarg *e, struct rb_execarg *s, char *errmsg, size_t errmsg_buflen)
{
/*
* 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?)
* (Is there an environment which has setpgid but no FD_CLOEXEC?)
*/
int ret;
pid_t pgroup;
pgroup = e->pgroup_pgid;
if (pgroup == -1)
return 0;
if (s) {
VALUE save = s->options;
/* maybe meaningless with no fork environment... */
rb_ary_store(save, EXEC_OPTION_PGROUP, PIDT2NUM(getpgrp()));
s->pgroup_given = 1;
s->pgroup_pgid = getpgrp();
}
pgroup = NUM2PIDT(obj);
if (pgroup == 0) {
pgroup = getpid(); /* async-signal-safe */
}
@ -2735,9 +2740,8 @@ rb_execarg_run_options(const struct rb_execarg *e, struct rb_execarg *s, char *e
}
#ifdef HAVE_SETPGID
obj = rb_ary_entry(options, EXEC_OPTION_PGROUP);
if (RTEST(obj)) {
if (run_exec_pgroup(obj, s, errmsg, errmsg_buflen) == -1) /* async-signal-safe */
if (e->pgroup_given) {
if (run_exec_pgroup(e, s, errmsg, errmsg_buflen) == -1) /* async-signal-safe */
return -1;
}
#endif