| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * setuid() for uClibc |
| 4 | * |
| 5 | * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| 6 | * |
| 7 | * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 8 | */ |
| 9 | |
| 10 | #include <sys/syscall.h> |
| 11 | #include <unistd.h> |
| 12 | #include <bits/wordsize.h> |
| 13 | |
| 14 | #if (__WORDSIZE == 32 && defined(__NR_setuid32)) || __WORDSIZE == 64 |
| 15 | # ifdef __NR_setuid32 |
| 16 | # undef __NR_setuid |
| 17 | # define __NR_setuid __NR_setuid32 |
| 18 | # endif |
| 19 | |
| 20 | _syscall1(int, setuid, uid_t, uid) |
| 21 | |
| 22 | #else |
| 23 | |
| 24 | # define __NR___syscall_setuid __NR_setuid |
| 25 | static __inline__ _syscall1(int, __syscall_setuid, __kernel_uid_t, uid) |
| 26 | |
| 27 | int setuid(uid_t uid) |
| 28 | { |
| 29 | if (uid == (uid_t) ~ 0 || uid != (uid_t) ((__kernel_uid_t) uid)) { |
| 30 | __set_errno(EINVAL); |
| 31 | return -1; |
| 32 | } |
| 33 | return (__syscall_setuid(uid)); |
| 34 | } |
| 35 | #endif |