table of contents
ACL_CREATE_ENTRY(3) | Library Functions Manual | ACL_CREATE_ENTRY(3) |
NAME¶
acl_create_entry
—
create a new ACL entry
LIBRARY¶
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS¶
#include
<sys/types.h>
#include <sys/acl.h>
int
acl_create_entry
(acl_t
*acl_p, acl_entry_t
*entry_p);
DESCRIPTION¶
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 calling 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 previous 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 qualifier 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.
RETURN VALUE¶
The acl_create_entry
() 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¶
If any of the following conditions occur, the
acl_create_entry
() function returns
-1
and sets errno to the
corresponding value:
STANDARDS¶
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
SEE ALSO¶
acl_init(3), acl_delete_entry(3), acl_free(3), acl_create_entry(3), acl(5)
AUTHOR¶
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⟩.
March 23, 2002 | Linux ACL |