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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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13
sysdeps/unix/sysv/linux/setegid.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1998, 2000, 2002 Free Software Foundation, Inc.
/* Copyright (C) 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
@ -21,7 +21,10 @@
#include <sys/types.h>
#include <unistd.h>
#ifdef __NR_setresgid
#include <sysdep.h>
#include "kernel-features.h"
#if defined __NR_setresgid || __ASSUME_SETRESUID_SYSCALL > 0
extern int __setresgid (gid_t rgid, gid_t egid, gid_t sgid);
@ -36,15 +39,21 @@ setegid (gid_t gid)
return -1;
}
# if __ASSUME_32BITUIDS > 0
return INLINE_SYSCALL (setresgid32, 3, -1, gid, -1);
# else
/* First try the syscall. */
result = __setresgid (-1, gid, -1);
# if __ASSUME_SETRESUID_SYSCALL == 0
if (result == -1 && errno == ENOSYS)
/* No system call available. Use emulation. This may not work
since `setregid' also sets the saved group ID when GID is not
equal to the real group ID, making it impossible to switch back. */
result = __setregid (-1, gid);
# endif
return result;
# endif
}
libc_hidden_def (setegid)
#else