unlinkat man page on Oracle

Man page or keyword search:  
man Server   33470 pages
apropos Keyword Search (all sections)
Output format
Oracle logo
[printable version]

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

       unlinkat	 -  remove  a  directory  entry	 relative  to a directory file

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

       int unlinkat(int dirfd, const char *pathname, 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 unlinkat() system call operates in exactly the same way  as	either
       unlink(2)  or  rmdir(2) (depending on whether or not flags includes the
       AT_REMOVEDIR flag) except for the differences described in this	manual

       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 unlink(2) and rmdir(2) for a relative pathname).

       If the pathname given in 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 unlink(2) and rmdir(2)).

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

       flags is a bit mask that can either be specified	 as  0,	 or  by	 ORing
       together	 flag  values  that control the operation of unlinkat().  Cur‐
       rently only one such flag is defined:

	      By default, unlinkat() performs the equivalent of	 unlink(2)  on
	      pathname.	  If the AT_REMOVEDIR flag is specified, then performs
	      the equivalent of rmdir(2) on pathname.

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

       The  same  errors  that occur for unlink(2) and rmdir(2) can also occur
       for  unlinkat().	  The  following  additional  errors  can  occur   for

       EBADF  dirfd is not a valid file descriptor.

       EINVAL An invalid flag value was specified in flags.

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

       unlinkat() 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 unlinkat().

       openat(2), rmdir(2), unlink(2), path_resolution(7)

       This  page  is  part of release 3.53 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				  2012-05-04			   UNLINKAT(2)

List of man pages available for Oracle

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]
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