Provided by: manpages-dev_3.54-1ubuntu1_all bug


       fstatat - get file status relative to a directory file descriptor


       #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)):

           Since glibc 2.10:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:


       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

       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.

              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).)


       On  success,  fstatat()  returns 0.  On error, -1 is returned and errno is set to indicate
       the error.


       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.

              pathname  is relative and dirfd is a file descriptor referring to a file other than
              a directory.


       fstatat() was added to Linux in kernel 2.6.16; library  support  was  added  to  glibc  in
       version 2.4.


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


       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().


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


       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