Name
fstatat — get file status relative to a directory
file descriptor
Synopsis
int
fstatat( |
int |
dirfd, |
| |
const char * |
pathname, |
| |
struct stat * |
buf, |
| |
int |
flags); |
DESCRIPTION
The fstatat() system call
operates in exactly the same way as stat(2), except for the
differences described in this manual page.
If the pathname given in pathname is relative, then it
is interpreted relative to the directory referred to by the
file descriptor dirfd
(rather than relative to the current working directory of the
calling process, as is done by stat(2) for a relative
pathname).
If pathname is
relative and dirfd is
the special value AT_FDCWD,
then pathname is
interpreted relative to the current working directory of the
calling process (like stat(2)).
If pathname is
absolute, then dirfd
is ignored.
flags can either
be 0, or include the following flag:
AT_SYMLINK_NOFOLLOW-
If pathname
is a symbolic link, do not dereference it: instead
return information about the link itself, like lstat(2). (By
default, fstatat()
dereferences symbolic links, like stat(2).)
RETURN VALUE
On success, fstatat()
returns 0. On error, −1 is returned and errno is set to indicate the error.
ERRORS
The same errors that occur for stat(2) can also occur for
fstatat(). The following
additional errors can occur for fstatat():
- EBADF
-
dirfd is not
a valid file descriptor.
- EINVAL
-
Invalid flag specified in flags.
- ENOTDIR
-
pathname is
relative and dirfd is a file
descriptor referring to a file other than a
directory.
VERSIONS
fstatat() was added to Linux
in kernel 2.6.16.
CONFORMING TO
This system call is non-standard but is proposed for
inclusion in a future revision of POSIX.1. A similar system
call exists on Solaris.
NOTES
See openat(2) for an
explanation of the need for fstatat().
SEE ALSO
openat(2), stat(2), path_resolution(7)
This manpage is Copyright (C) 2006, Michael Kerrisk
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