/ library calls / Acl_create_entry - Create A New ACL Entry

acl_create_entry - create a new ACL entry
Linux Access Control Lists library (libacl, -lacl).
#include <sys/types.h>
#include <sys/acl.h>

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 calling acl_free 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.
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.
If any of the following conditions occur, the acl_create_entry() function returns -1 and sets errno to the corresponding value:
The argument acl_p is not a valid pointer to an ACL.
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 , acl_delete_entry , acl_free , acl_create_entry , acl
Derived from the FreeBSD manual pages written by Robert N M Watson ⟨rwatson [ät] FreeBSD.org⟩, and adapted for Linux by Andreas Gruenbacher ⟨a.gruenbacher [ät] bestbits.at⟩.
acl_delete_def_file , acl_delete_def_link_np , acl_delete_fd_np , acl_delete_file_np , acl_delete_link_np - delete an ACL from a file
acl_create_entry acl_create_entry_np - create a new ACL entry