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* sysdeps/unix/sysv/linux/seteuid.c (seteuid): Use setresuid32
	syscall directly if possible.  If __ASSUME_SETRESUID_SYSCALL is
	defined drop compatibility code.
	* sysdeps/unix/sysv/linux/setegid.c (setegid): Use setresgid32
	syscall directly if possible.  If __ASSUME_SETRESUID_SYSCALL is
	defined drop compatibility code.
	* sysdeps/unix/sysv/linux/i386/seteuid.c (seteuid): Use
	setresuid32 syscall directly if possible.
	* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Use
	setresgid32 syscall directly if possible.
This commit is contained in:
Ulrich Drepper
2003-06-08 22:37:53 +00:00
parent f0da6a7d5a
commit eae59a5681
7 changed files with 86 additions and 16 deletions
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32
sysdeps/unix/sysv/linux/i386/setegid.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995, 96, 97, 98, 2000, 2002 Free Software Foundation, Inc.
/* Copyright (C) 1995-1998, 2000, 2002, 2003 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
@ -16,13 +16,41 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sysdep.h>
#include "kernel-features.h"
#ifdef __NR_setresgid
extern int __setresgid (uid_t rgid, uid_t egid, uid_t sgid);
#endif
int
setegid (gid)
gid_t gid;
{
return __setregid (-1, gid);
#if __ASSUME_32BITUIDS > 0
return INLINE_SYSCALL (setresgid32, 3, -1, gid, -1);
#else
int result;
/* First try the syscall. */
# ifdef __NR_setresgid
result = __setresgid (-1, gid, -1);
# if __ASSUME_SETRESUID_SYSCALL > 0
if (0)
# else
if (result == -1 && errno == ENOSYS)
# endif
/* No system call available. Use emulation. This may not work
since `setregid' also sets the saved user ID when GID is not
equal to the real user ID, making it impossible to switch back. */
# endif
result = __setregid (-1, gid);
return result;
#endif
}
libc_hidden_def (setegid)