fstatat man page on CentOS

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FSTATAT(2)		   Linux Programmer's Manual		    FSTATAT(2)

NAME
       fstatat - get file status relative to a directory file descriptor

SYNOPSIS
       #include <sys/stat.h>

       int fstatat(int dirfd, const char *path, 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 path is relative, then it is interpreted rela‐
       tive  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  the	pathname  given	 in  path is relative and dirfd is the special
       value AT_FDCWD, then path is interpreted relative to the current	 work‐
       ing directory of the calling process (like stat(2)).

       If the pathname given in path is absolute, then dirfd is ignored.

       flags can either be 0, or include the following flag:

       AT_SYMLINK_NOFOLLOW
	      If  path	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
	      path is a relative path and dirfd is a file descriptor referring
	      to a file other than a directory.

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

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.

VERSIONS
       fstatat() was added to Linux in kernel 2.6.16.

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

Linux 2.6.16			  2006-04-30			    FSTATAT(2)
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