fstatat64


SYNOPSIS
       #include <fcntl.h> /* Definition of AT_* constants */
       #include <sys/stat.h>

       int fstatat(int dirfd, const char *pathname, struct stat *buf,
                   int flags);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       fstatat():
           Since glibc 2.10:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _ATFILE_SOURCE

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 one or more of the following flags
       ORed:

       AT_EMPTY_PATH (since Linux 2.6.39)
              If pathname is an empty string, operate on the file referred  to
              by  dirfd (which may have been obtained using the open(2) O_PATH
              flag).  In this case, dirfd can refer to any type of  file,  not
              just a directory.


       AT_NO_AUTOMOUNT (since Linux 2.6.38)
              Don't  automount the terminal ("basename") component of pathname
              if it is a directory that is an automount  point.   This  allows
              the  caller  to  gather attributes of an automount point (rather
              than the location it would mount).  This flag  can  be  used  in
              tools  that  scan  directories to prevent mass-automounting of a
              directory of automount points.  The AT_NO_AUTOMOUNT flag has  no
              effect if the mount point has already been mounted over.

       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).)

       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;  library  support  was
       added to glibc in version 2.4.

CONFORMING TO
       POSIX.1-2008.  A similar system call exists on Solaris.

NOTES
       See openat(2) for an explanation of the need for fstatat().

       The  underlying  system  call  employed  by the glibc fstatat() wrapper
       function is actually called fstatat64().

SEE ALSO
       openat(2), stat(2), path_resolution(7), symlink(7)

COLOPHON
       This page is part of release 3.54 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



Linux                             2013-07-21                        FSTATAT(2)
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