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7ae60af75b
Non-at functions can be implemented by just calling the corresponding at function with AT_FDCWD and zero at_flags. In the linkat case, the at behavior is different (O_NOLINK), so this introduces __linkat_common to pass O_NOLINK as appropriate. lstat functions can also be implemented with fstatat by adding __fstatat64_common which takes a flags parameter in addition to the at_flags parameter, In the end this factorizes chmod, chown, link, lstat64, mkdir, readlink, rename, stat64, symlink, unlink, utimes. This also makes __lstat, __lxstat64, __stat and __xstat64 directly use __fstatat64_common instead of __lstat64 or __stat64.
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* unlinkat -- Remove a name relative to an open directory. Hurd version.
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Copyright (C) 2006-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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/* Remove the link named NAME. */
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int
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__unlinkat (int fd, const char *name, int flag)
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{
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error_t err;
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file_t dir;
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const char *file;
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if ((flag &~ AT_REMOVEDIR) != 0)
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{
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__set_errno (EINVAL);
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return -1;
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}
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dir = __directory_name_split_at (fd, name, (char **) &file);
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if (dir == MACH_PORT_NULL)
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return -1;
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err = ((flag & AT_REMOVEDIR) ? __dir_rmdir : __dir_unlink) (dir, file);
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__mach_port_deallocate (__mach_task_self (), dir);
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if (err)
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return __hurd_fail (err);
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return 0;
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}
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weak_alias (__unlinkat, unlinkat)
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