3bbceb1287
* sysdeps/mach/hurd/group_member.c: New file. * sysdeps/generic/group_member.c: New file. * Makerules (lib-noranlib): Don't depend on $(install-lib). (others): Do. * extra-lib.mk: Fix test of $(lib)-no-lib-dep. Mon Oct 30 12:33:10 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * Rules (others): Depend on $(extra-objs). * posix/unistd.h [__USE_GNU]: Declare group_member, __group_member. * posix/Makefile (routines): Add group_member. * sysdeps/posix/euidaccess.c: New file, adapted from fileutils. * sysdeps/unix/sysv/linux/i386/sigaction.c: Tighten constraint for SIG operand in asm so it must be a register. Add dead return to quiet gcc warning. * Makerules (sysd-rules): Write a defn for sysd-rules-done. [! sysd-rules-done]: Inhibit deps.
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/* POSIX.1 `sigaction' call for Linux/i386.
|
|
Copyright (C) 1991, 1995 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <signal.h>
|
|
|
|
|
|
/* If ACT is not NULL, change the action for SIG to *ACT.
|
|
If OACT is not NULL, put the old action for SIG in *OACT. */
|
|
int
|
|
__sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
|
|
{
|
|
struct sigaction newact;
|
|
int result;
|
|
|
|
if (act)
|
|
{
|
|
newact = *act;
|
|
newact.sa_restorer = ((act->sa_flags & SA_NOMASK)
|
|
? &&restore_nomask : &&restore);
|
|
act = &newact;
|
|
}
|
|
|
|
asm volatile ("pushl %%ebx\n"
|
|
"movl %2, %%ebx\n"
|
|
"int $0x80\n"
|
|
"popl %%ebx"
|
|
: "=a" (result)
|
|
: "0" (SYS_ify (sigaction)), "r" (sig), "c" (act), "d" (oact));
|
|
|
|
if (result < 0)
|
|
{
|
|
errno = -result;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
|
|
restore:
|
|
asm (
|
|
#ifdef PIC
|
|
" pushl %%ebx\n"
|
|
" call 0f\n"
|
|
"0: popl %%ebx\n"
|
|
" addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %%ebx\n"
|
|
" addl $8, %%esp\n"
|
|
" call __sigsetmask@PLT\n"
|
|
" addl $8, %%esp\n"
|
|
" popl %%ebx\n"
|
|
#else
|
|
" addl $4, %%esp\n"
|
|
" call __sigsetmask\n"
|
|
" addl $4, %%esp\n"
|
|
#endif
|
|
" popl %%eax\n"
|
|
" popl %%ecx\n"
|
|
" popl %%edx\n"
|
|
" popf\n"
|
|
" ret"
|
|
: : );
|
|
|
|
restore_nomask:
|
|
asm (" addl $4, %%esp\n"
|
|
" popl %%eax\n"
|
|
" popl %%ecx\n"
|
|
" popl %%edx\n"
|
|
" popf\n"
|
|
" ret"
|
|
: : );
|
|
|
|
/* NOTREACHED */
|
|
return -1;
|
|
}
|
|
|
|
weak_alias (__sigaction, sigaction)
|