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io: Implement lchmod using fchmodat [BZ #14578]

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This commit is contained in:
Florian Weimer
2020-01-22 18:56:04 +01:00
parent 6c80c6e876
commit 6b89c385d8
5 changed files with 8 additions and 6 deletions
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1
include/sys/stat.h
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@ -9,6 +9,7 @@ extern int __lstat (const char *__file, struct stat *__buf);
extern int __chmod (const char *__file, __mode_t __mode); extern int __chmod (const char *__file, __mode_t __mode);
libc_hidden_proto (__chmod) libc_hidden_proto (__chmod)
extern int __fchmod (int __fd, __mode_t __mode); extern int __fchmod (int __fd, __mode_t __mode);
libc_hidden_proto (fchmodat)
extern __mode_t __umask (__mode_t __mask); extern __mode_t __umask (__mode_t __mask);
extern int __mkdir (const char *__path, __mode_t __mode); extern int __mkdir (const char *__path, __mode_t __mode);
libc_hidden_proto (__mkdir) libc_hidden_proto (__mkdir)

1
io/fchmodat.c
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@ -42,3 +42,4 @@ fchmodat (int fd, const char *file, mode_t mode, int flag)
return -1; return -1;
} }
stub_warning (fchmodat) stub_warning (fchmodat)
libc_hidden_def (fchmodat)

10
io/lchmod.c
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@ -1,4 +1,4 @@
/* lchmod -- Change the protections of a file or symbolic link. Stub version. /* lchmod -- Change the protections of a file or symbolic link. Generic version.
Copyright (C) 2002-2020 Free Software Foundation, Inc. Copyright (C) 2002-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
@ -17,15 +17,13 @@
<https://www.gnu.org/licenses/>. */ <https://www.gnu.org/licenses/>. */
#include <errno.h> #include <errno.h>
#include <sys/stat.h> #include <fcntl.h>
#include <sys/types.h> #include <sys/types.h>
#include <unistd.h>
/* Change the protections of FILE to MODE. */ /* Change the protections of FILE to MODE. */
int int
lchmod (const char *file, mode_t mode) lchmod (const char *file, mode_t mode)
{ {
__set_errno (ENOSYS); return fchmodat (AT_FDCWD, file, mode, AT_SYMLINK_NOFOLLOW);
return -1;
} }
stub_warning (lchmod)

1
sysdeps/mach/hurd/fchmodat.c
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@ -37,3 +37,4 @@ fchmodat (int fd, const char *file, mode_t mode, int flag)
return __hurd_fail (err); return __hurd_fail (err);
return 0; return 0;
} }
libc_hidden_def (fchmodat)

1
sysdeps/unix/sysv/linux/fchmodat.c
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@ -38,3 +38,4 @@ fchmodat (int fd, const char *file, mode_t mode, int flag)
return INLINE_SYSCALL (fchmodat, 3, fd, file, mode); return INLINE_SYSCALL (fchmodat, 3, fd, file, mode);
} }
libc_hidden_def (fchmodat)