diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/setreuid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/setreuid.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/setreuid.c b/sysdeps/unix/sysv/linux/i386/setreuid.c index f38f136920..58ddff2b00 100644 --- a/sysdeps/unix/sysv/linux/i386/setreuid.c +++ b/sysdeps/unix/sysv/linux/i386/setreuid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998 Free Software Foundation, Inc. +/* Copyright (C) 1998, 2000 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 @@ -24,12 +24,41 @@ #include <sys/syscall.h> #include <linux/posix_types.h> +#include "kernel-features.h" + extern int __syscall_setreuid (__kernel_uid_t, __kernel_uid_t); +#ifdef __NR_setreuid32 +extern int __syscall_setreuid32 (__kernel_uid32_t, __kernel_uid32_t); +# if __ASSUME_32BITUIDS == 0 +/* This variable is shared with all files that need to check for 32bit + uids. */ +extern int __libc_missing_32bit_uids; +# endif +#endif /* __NR_setreuid32 */ + int __setreuid (uid_t ruid, uid_t euid) { +#if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (setreuid32, 2, ruid, euid); +#else +# ifdef __NR_setreuid32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (setreuid32, 2, ruid, euid); + + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_setreuid32 */ if ((ruid != (uid_t) -1 && ruid != (uid_t) (__kernel_uid_t) ruid) || (euid != (uid_t) -1 && euid != (uid_t) (__kernel_uid_t) euid)) { @@ -38,5 +67,6 @@ __setreuid (uid_t ruid, uid_t euid) } return INLINE_SYSCALL (setreuid, 2, ruid, euid); +#endif } weak_alias (__setreuid, setreuid) |