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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
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ACL_DELETE_DEF_FILE(3) Library Functions Manual ACL_DELETE_DEF_FILE(3)
acl_delete_def_file, acl_delete_def_file_at — delete a default ACL
by filename
Linux Access Control Lists library (libacl, -lacl).
<sys/types.h> <sys/acl.h> int
acl_delete_def_file(const char *path_p) int
acl_delete_def_file_at(int dirfd, const char *path_p,
int at_flags)
The acl_delete_def_file() function deletes a default ACL from the
directory whose pathname is given in path_p. If path_p is a
symbolic link, acl_delete_def_file() operates on the directory the
link refers to.
The effective user ID of the process must match the owner of the
file or directory or the process must have the CAP_FOWNER
capability for the request to succeed.
If the argument path_p is not a directory, then the function
fails. It is no error if the directory whose pathname is pointed
to by the argument path_p does not have a default ACL.
acl_delete_def_file_at()
The acl_delete_def_file_at() function operates in exactly the same
way as acl_delete_def_file(), except for the differences described
here.
If the pathname given in path_p 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
acl_delete_def_file()).
If path_p is relative and dirfd is the special value AT_FDCWD,
then path_p is interpreted relative to the current working
directory of the calling process (like acl_delete_def_file()).
If path_p is absolute, then dirfd is ignored.
The at_flags argument can either be 0, or include one or more of
the following flags ORed:
AT_EMPTY_PATH
If path_p is an empty string, operate on the file referred
to by dirfd (which may have been obtained using the
open(2) O_PATH flag). In this case, dirfd can refer to any
type of file, not just a directory.
AT_SYMLINK_NOFOLLOW
If path_p refers to a symbolic link, do not dereference
it: instead, fail the operation and set the global
variable errno to ENOTSUP. This indicates that the
symbolic link cannot have ACLs.
The acl_delete_def_file() and acl_delete_def_file_at() functions
return the value 0 if successful; otherwise the value -1 is
returned and the global variable errno is set to indicate the
error.
If any of the following conditions occur, the
acl_delete_def_file() and acl_delete_def_file_at() functions
return the value -1 and set errno to the corresponding value:
[EBADF] The argument path_p is relative but the
argument dirfd is neither AT_FDCWD nor a valid
file descriptor.
[EINVAL] The file referred to by path_p is not a
directory.
An invalid flag was specified in the at_flags
argument.
[ENOTDIR] A component of the path prefix is not a
directory.
The argument path_p is relative and the
argument dirfd is a file descriptor referring
to a file other than a directory.
[ENOTSUP] The argument at_flags includes the flag
AT_SYMLINK_NOFOLLOW and path_p is a symbolic
link.
The file system on which the file identified by
path_p is located does not support ACLs, or
ACLs are disabled.
[EPERM] The process does not have appropriate privilege
to perform the operation to delete the default
ACL.
[EROFS] This function requires modification of a file
system which is currently read-only.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
Function acl_delete_def_file_at() is a Linux specific extension.
acl_get_file(3), acl_set_file(3), acl(5)
Derived from the FreeBSD manual pages written by Robert N M Watson
<rwatson@FreeBSD.org>, and adapted for Linux by Andreas
Gruenbacher <andreas.gruenbacher@gmail.com>.
This page is part of the acl (manipulating access control lists)
project. Information about the project can be found at
http://savannah.nongnu.org/projects/acl. If you have a bug report
for this manual page, see
⟨http://savannah.nongnu.org/bugs/?group=acl⟩. This page was
obtained from the project's upstream Git repository
⟨git://git.savannah.nongnu.org/acl.git⟩ on 2026-08-03. (At that
time, the date of the most recent commit that was found in the
repository was 2026-06-29.) If you discover any rendering
problems in this HTML version 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
man-pages@man7.org
Linux ACL June 5, 2026 ACL_DELETE_DEF_FILE(3)
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HTML rendering created 2026-09-09 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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