acl_set_fd(3) — Linux manual page


ACL_SET_FD(3)           BSD Library Functions Manual           ACL_SET_FD(3)

NAME         top

     acl_set_fd — set an ACL by file descriptor

LIBRARY         top

     Linux Access Control Lists library (libacl, -lacl).

SYNOPSIS         top

     #include <sys/types.h>
     #include <sys/acl.h>

     acl_set_fd(int fd, acl_t acl);

DESCRIPTION         top

     The acl_set_fd() function associates an access ACL with the file
     referred to by fd.

     The effective user ID of the process must match the owner of the file
     or the process must have the CAP_FOWNER capability for the request to

RETURN VALUE         top

     The acl_set_fd() function returns the value 0 if successful; otherwise
     the value -1 is returned and the global variable errno is set to indi‐
     cate the error.

ERRORS         top

     If any of the following conditions occur, the acl_set_fd() function
     returns the value -1 and and sets errno to the corresponding value:

     [EBADF]            The fd argument is not a valid file descriptor.

     [EINVAL]           The argument acl does not point to a valid ACL.

                        The ACL has more entries than the file referred to
                        by fd can obtain.

     [ENOSPC]           The directory or file system that would contain the
                        new ACL cannot be extended or the file system is out
                        of file allocation resources.

     [ENOTSUP]          The file identified by fd cannot be associated with
                        the ACL because the file system on which the file is
                        located does not support this.

     [EPERM]            The process does not have appropriate privilege to
                        perform the operation to set the ACL.

     [EROFS]            This function requires modification of a file system
                        which is currently read-only.

STANDARDS         top

     IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)

SEE ALSO         top

     acl_delete_def_file(3), acl_get_file(3), acl_set_file(3), acl_valid(3),

AUTHOR         top

     Derived from the FreeBSD manual pages written by Robert N M Watson
     <>, and adapted for Linux by Andreas Gruenbacher

COLOPHON         top

     This page is part of the acl (manipulating access control lists)
     project.  Information about the project can be found at  If you have a bug report for
     this manual page, see ⟨⟩.
     This page was obtained from the project's upstream Git repository
     ⟨git://⟩ on 2020-09-18.  (At that time,
     the date of the most recent commit that was found in the repository was
     2020-09-03.)  If you discover any rendering problems in this HTML ver‐
     sion of the page, or you believe there is a better or more up-to-date
     source for the page, or you have corrections or improvements to the
     information in this COLOPHON (which is not part of the original manual
     page), send a mail to

Linux ACL                      March 23, 2002                      Linux ACL