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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
ACL_CREATE_ENTRY(3) BSD Library Functions Manual ACL_CREATE_ENTRY(3)
acl_create_entry — create a new ACL entry
Linux Access Control Lists library (libacl, -lacl).
#include <sys/types.h>
#include <sys/acl.h>
int
acl_create_entry(acl_t *acl_p, acl_entry_t *entry_p);
The acl_create_entry() function creates a new ACL entry in the ACL
pointed to by the contents of the pointer argument acl_p. On success,
the function returns a descriptor for the new ACL entry via entry_p.
This function may cause memory to be allocated. The caller should free
any releasable memory, when the new ACL is no longer required, by call‐
ing acl_free(3) with (void*)*acl_p as an argument. If the ACL working
storage cannot be increased in the current location, then the working
storage for the ACL pointed to by acl_p may be relocated and the previ‐
ous working storage is released. A pointer to the new working storage
is returned via acl_p.
The components of the new ACL entry are initialized in the following
ways: the ACL tag type component contains ACL_UNDEFINED_TAG, the quali‐
fier component contains ACL_UNDEFINED_ID, and the set of permissions
has no permissions enabled. Any existing ACL entry descriptors that
refer to entries in the ACL continue to refer to those entries.
The acl_create_entry() function returns the value 0 if successful; oth‐
erwise 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_create_entry() func‐
tion returns -1 and sets errno to the corresponding value:
[EINVAL] The argument acl_p is not a valid pointer to an ACL.
[ENOMEM] The ACL working storage requires more memory than is
allowed by the hardware or system-imposed memory
management constraints.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
acl_init(3), acl_delete_entry(3), acl_free(3), acl_create_entry(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
<a.gruenbacher@bestbits.at>.
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 2017-07-05. 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 March 23, 2002 Linux ACL