diff options
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/lchown.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/lchown.c b/sysdeps/unix/sysv/linux/s390/lchown.c new file mode 100644 index 0000000000..8ca77fc037 --- /dev/null +++ b/sysdeps/unix/sysv/linux/s390/lchown.c @@ -0,0 +1,75 @@ +/* Copyright (C) 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 + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include <linux/posix_types.h> +#include "kernel-features.h" + +extern int __syscall_lchown (const char *__unbounded __file, + __kernel_uid_t __owner, __kernel_gid_t __group); + +# ifdef __NR_lchown32 +extern int __syscall_lchown32 (const char *__unbounded __file, + __kernel_uid32_t __owner, + __kernel_gid32_t __group); +# 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_lchown32 */ + +int +__lchown (const char *file, uid_t owner, gid_t group) +{ +# if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group); +# else +# ifdef __NR_lchown32 + if (__libc_missing_32bit_uids <= 0) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (lchown32, 3, CHECK_STRING (file), owner, group); + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_lchown32 */ + + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + + return INLINE_SYSCALL (lchown, 3, CHECK_STRING (file), owner, group); +# endif +} + +weak_alias (__lchown, lchown) |