diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/seteuid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/seteuid.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/seteuid.c b/sysdeps/unix/sysv/linux/seteuid.c index 20840dbfc0..15687e36e4 100644 --- a/sysdeps/unix/sysv/linux/seteuid.c +++ b/sysdeps/unix/sysv/linux/seteuid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999 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 +21,9 @@ #include <sys/types.h> #include <unistd.h> -#ifdef __NR_setresuid +#include "kernel-features.h" + +#if defined __NR_setresuid || __ASSUME_SETRESUID_SYSCALL > 0 extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid); @@ -38,11 +40,13 @@ seteuid (uid_t uid) /* First try the syscall. */ result = __setresuid (-1, uid, -1); +# if __ASSUME_SETRESUID_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use emulation. This may not work since `setreuid' also sets the saved user ID when UID is not equal to the real user ID, making it impossible to switch back. */ result = __setreuid (-1, uid); +# endif return result; } |