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fdbd4ca90d
Made FILE an interface to various backends. This allows application writers
to override the standard FILE API functions with their own backends. This
is highly unportable - it'd be nice if a real standard existed for this.
glibc already does something like this internally, but AFAIK you can't hook
into it.
Added fdopen(3), fopen(3), fregister(3), funregister(3), fread(3),
fwrite(3), fseek(3), clearerr(3), ferror(3), feof(3), rewind(3), ftell(3),
fflush(3), fclose(3), fileno(3), fnewline(3), fcloseall(3), memset(3),
stdio(3), vfprintf(3), fprintf(3), and vprintf(3).
Added a file-descriptor backend to the FILE API.
fd's {0, 1, 2} are now initialized as stdin, stdout, and stderr when the
standard library initializes.
fcloseall(3) is now called on exit(3).
decl/intn_t_.h now @include(size_t.h) instead of declaring it itself.
Added <stdint.h>.
The following programs now flush stdout: cat(1), clear(1), editor(1),
init(1), mxsh(1).
printf(3) is now hooked up against vprintf(3), while Maxsi::PrintF
remains using the system call, for now.
91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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process.cpp
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Exposes system calls for process creation and management.
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******************************************************************************/
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#include "platform.h"
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#include "syscall.h"
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#include "process.h"
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#include <stdio.h>
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namespace Maxsi
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{
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namespace Process
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{
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DEFN_SYSCALL1_VOID(SysExit, SYSCALL_EXIT, int);
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DEFN_SYSCALL4(int, SysExecVE, SYSCALL_EXEC, const char*, int, char* const*, char* const*);
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DEFN_SYSCALL0(pid_t, SysFork, SYSCALL_FORK);
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DEFN_SYSCALL0(pid_t, SysGetPID, SYSCALL_GETPID);
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DEFN_SYSCALL0(pid_t, SysGetParentPID, SYSCALL_GETPPID);
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DEFN_SYSCALL3(pid_t, SysWait, SYSCALL_WAIT, pid_t, int*, int);
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int Execute(const char* filepath, int argc, const char** argv)
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{
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return SysExecVE(filepath, argc, (char* const*) argv, NULL);
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}
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void Abort()
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{
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// TODO: Send SIGABRT instead!
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Exit(128 + 6);
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}
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extern "C" void abort() { return Abort(); }
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extern "C" void _exit(int status)
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{
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SysExit(status);
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}
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DUAL_FUNCTION(void, exit, Exit, (int status))
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{
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fcloseall();
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_exit(status);
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}
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DUAL_FUNCTION(pid_t, fork, Fork, ())
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{
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return SysFork();
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}
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DUAL_FUNCTION(pid_t, getpid, GetPID, ())
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{
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return SysGetPID();
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}
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DUAL_FUNCTION(pid_t, getppid, GetParentPID, ())
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{
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return SysGetParentPID();
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}
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extern "C" pid_t waitpid(pid_t pid, int* status, int options)
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{
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return SysWait(pid, status, options);
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}
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extern "C" pid_t wait(int* status)
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{
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return waitpid(-1, status, 0);
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}
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}
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}
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