readlinkat man page on Ubuntu

Man page or keyword search:  
man Server   6591 pages
apropos Keyword Search (all sections)
Output format
Ubuntu logo
[printable version]

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

NAME
       readlinkat - read value of a symbolic link relative to a directory file
       descriptor

SYNOPSIS
       #define _ATFILE_SOURCE
       #include <fcntl.h> /* Definition of AT_* constants */
       #include <unistd.h>

       int readlinkat(int dirfd, const char *pathname,
		      char *buf, size_t bufsiz);

DESCRIPTION
       The readlinkat() system call operates in exactly the same way as	 read‐
       link(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 readlink(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 readlink(2)).

       If pathname is absolute, then dirfd is ignored.

RETURN VALUE
       On success, readlinkat() returns the number of bytes placed in buf.  On
       error, -1 is returned and errno is set to indicate the error.

ERRORS
       The  same  errors  that	occur for readlink(2) can also occur for read‐
       linkat().  The following additional errors can occur for readlinkat():

       EBADF  dirfd is not a valid file descriptor.

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

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

CONFORMING TO
       POSIX.1-2008.

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

SEE ALSO
       openat(2), readlink(2), path_resolution(7)

COLOPHON
       This  page  is  part of release 3.23 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				  2008-08-21			 READLINKAT(2)
[top]

List of man pages available for Ubuntu

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net