| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * lchown() 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_lchown32)) || __WORDSIZE == 64 |
| 15 | # ifdef __NR_lchown32 |
| 16 | # undef __NR_lchown |
| 17 | # define __NR_lchown __NR_lchown32 |
| 18 | # endif |
| 19 | |
| 20 | _syscall3(int, lchown, const char *, path, uid_t, owner, gid_t, group) |
| 21 | |
| 22 | #else |
| 23 | |
| 24 | # define __NR___syscall_lchown __NR_lchown |
| 25 | static __inline__ _syscall3(int, __syscall_lchown, const char *, path, |
| 26 | __kernel_uid_t, owner, __kernel_gid_t, group) |
| 27 | |
| 28 | int lchown(const char *path, uid_t owner, gid_t group) |
| 29 | { |
| 30 | if (((owner + 1) > (uid_t) ((__kernel_uid_t) - 1U)) |
| 31 | || ((group + 1) > (gid_t) ((__kernel_gid_t) - 1U))) { |
| 32 | __set_errno(EINVAL); |
| 33 | return -1; |
| 34 | } |
| 35 | return __syscall_lchown(path, owner, group); |
| 36 | } |
| 37 | |
| 38 | #endif |