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| author | Miklos Szeredi <mszeredi@redhat.com> | 2020-05-14 16:44:25 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-05-14 16:44:25 +0200 |
| commit | c8ffd8bcdd28296a198f237cc595148a8d4adfbe (patch) | |
| tree | 71ce857ad8d9feea14cfe9619013e84a88bb374c /fs/internal.h | |
| parent | vfs: don't parse "silent" option (diff) | |
| download | linux-c8ffd8bcdd28296a198f237cc595148a8d4adfbe.tar.xz linux-c8ffd8bcdd28296a198f237cc595148a8d4adfbe.zip | |
vfs: add faccessat2 syscall
POSIX defines faccessat() as having a fourth "flags" argument, while the
linux syscall doesn't have it. Glibc tries to emulate AT_EACCESS and
AT_SYMLINK_NOFOLLOW, but AT_EACCESS emulation is broken.
Add a new faccessat(2) syscall with the added flags argument and implement
both flags.
The value of AT_EACCESS is defined in glibc headers to be the same as
AT_REMOVEDIR. Use this value for the kernel interface as well, together
with the explanatory comment.
Also add AT_EMPTY_PATH support, which is not documented by POSIX, but can
be useful and is trivial to implement.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/internal.h')
| -rw-r--r-- | fs/internal.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/internal.h b/fs/internal.h index aa5d45524e87..0d467e32dd7e 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -126,7 +126,6 @@ extern struct open_how build_open_how(int flags, umode_t mode); extern int build_open_flags(const struct open_how *how, struct open_flags *op); long do_sys_ftruncate(unsigned int fd, loff_t length, int small); -long do_faccessat(int dfd, const char __user *filename, int mode); int do_fchmodat(int dfd, const char __user *filename, umode_t mode); int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, int flag); |