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 succeed.

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 indicate 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), acl(5)

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 2023-06-23.  (At that
     time, the date of the most recent commit that was found in the
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Linux ACL                    March 23, 2002                    Linux ACL