diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/setfsuid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/setfsuid.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/setfsuid.c b/sysdeps/unix/sysv/linux/i386/setfsuid.c index f3771694a1..cf7bc16476 100644 --- a/sysdeps/unix/sysv/linux/i386/setfsuid.c +++ b/sysdeps/unix/sysv/linux/i386/setfsuid.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 @@ -24,13 +24,42 @@ #include <sys/syscall.h> #include <linux/posix_types.h> +#include "kernel-features.h" #ifdef __NR_setfsuid + extern int __syscall_setfsuid (__kernel_uid_t); +# ifdef __NR_setfsuid32 +extern int __syscall_setfsuid32 (__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_setfsuid32 */ + int setfsuid (uid_t uid) { +# if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (setfsuid32, 1, uid); +# else +# ifdef __NR_setfsuid32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (setfsuid32, 1, uid); + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_setfsuid32 */ + if (uid != (uid_t) ((__kernel_uid_t) uid)) { __set_errno (EINVAL); @@ -38,5 +67,6 @@ setfsuid (uid_t uid) } return INLINE_SYSCALL (setfsuid, 1, uid); +# endif } #endif |