fchown man page on Archlinux

Man page or keyword search:  
man Server   11224 pages
apropos Keyword Search (all sections)
Output format
Archlinux logo
[printable version]

FCHOWN(3P)		   POSIX Programmer's Manual		    FCHOWN(3P)

       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the	 corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.

       fchown — change owner and group of a file

       #include <unistd.h>

       int fchown(int fildes, uid_t owner, gid_t group);

       The fchown() function shall be equivalent to chown()  except  that  the
       file  whose  owner  and	group  are  changed  is	 specified by the file
       descriptor fildes.

       Upon successful completion, fchown()  shall  return  0.	Otherwise,  it
       shall return −1 and set errno to indicate the error.

       The fchown() function shall fail if:

       EBADF  The fildes argument is not an open file descriptor.

       EPERM  The  effective  user  ID does not match the owner of the file or
	      the  process  does   not	 have	appropriate   privileges   and
	      _POSIX_CHOWN_RESTRICTED	indicates   that   such	 privilege  is

       EROFS  The file referred to by fildes resides on a read-only file  sys‐

       The fchown() function may fail if:

       EINVAL The  owner or group ID is not a value supported by the implemen‐
	      tation.  The fildes argument refers to a pipe or	socket	or  an
	      fattach()-ed  STREAM  and the implementation disallows execution
	      of fchown() on a pipe.

       EIO    A physical I/O error has occurred.

       EINTR  The fchown() function was interrupted  by	 a  signal  which  was

       The following sections are informative.

   Changing the Current Owner of a File
       The  following  example	shows  how to change the owner of a file named
       /home/cnd/mod1 to ``jones'' and the group to ``cnd''.

       The numeric value for the user ID is obtained by extracting the user ID
       from  the user database entry associated with ``jones''. Similarly, the
       numeric value for the group ID is obtained by extracting the  group  ID
       from  the  group	 database  entry associated with ``cnd''. This example
       assumes the calling program has appropriate privileges.

	   #include <sys/types.h>
	   #include <unistd.h>
	   #include <fcntl.h>
	   #include <pwd.h>
	   #include <grp.h>

	   struct passwd *pwd;
	   struct group	 *grp;
	   int		  fildes;
	   fildes = open("/home/cnd/mod1", O_RDWR);
	   pwd = getpwnam("jones");
	   grp = getgrnam("cnd");
	   fchown(fildes, pwd->pw_uid, grp->gr_gid);





       The Base Definitions volume of POSIX.1‐2008, <unistd.h>

       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),	The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
       cal and Electronics Engineers,  Inc  and	 The  Open  Group.   (This  is
       POSIX.1-2008  with  the	2013  Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.unix.org/online.html .

       Any  typographical  or  formatting  errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files  to  man page format. To report such errors, see https://www.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2013			    FCHOWN(3P)

List of man pages available for Archlinux

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