acl_create_entry(3) [redhat man page]

ACL_CREATE_ENTRY(3)					   BSD 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.  Upon successful
     completion, 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 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.

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:

     [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 con-
			straints.

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
     <a.gruenbacher@computer.org>.

Linux ACL							  March 23, 2002							 Linux ACL

Check Out this Related Man Page

ACL_CREATE_ENTRY(3)					   BSD Library Functions Manual 				       ACL_CREATE_ENTRY(3)

NAME

     acl_create_entry, acl_create_entry_np -- create a new ACL entry

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/types.h>
     #include <sys/acl.h>

     int
     acl_create_entry(acl_t *acl_p, acl_entry_t *entry_p);

     int
     acl_create_entry_np(acl_t *acl_p, acl_entry_t *entry_p, int entry_index);

DESCRIPTION

     The acl_create_entry() function is a POSIX.1e call that creates a new ACL entry in the ACL pointed to by acl_p.  The function will return in
     entry_p a descriptor for this ACL entry.

     The acl_create_entry_np() function is a non-portable extension which allows the caller to specify the position of the created entry within
     the ACL.  If entry_index is ACL_FIRST_ENTRY the entry will be created at the head of the ACL.  If entry_index is ACL_LAST_ENTRY the entry
     will be created at the end of the ACL.  After inserting an ACL entry with an entry_index other than ACL_LAST_ENTRY the behaviour of any
     acl_entry_t's previously obtained from the ACL by acl_create_entry() or acl_get_entry() is undefined.

RETURN VALUES

     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

     The acl_create_entry() and acl_create_entry_np() functions fail if:

     [EINVAL]		Argument acl_p does not point to a pointer to a valid ACL.

     [ENOMEM]		The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management con-
			straints.

     [ERANGE]		The entry_index argument to acl_create_entry_np() is greater than the number of entries in the ACL.

SEE ALSO

     acl(3), acl_delete_entry(3), acl_get_entry(3), posix1e(3)

STANDARDS

     POSIX.1e is described in IEEE POSIX.1e draft 17.

AUTHORS

     Michael Smith
     Chris D Fulhaber

BSD
								  March 16, 2001							       BSD

Linux and UNIX Man Pages

acl_create_entry(3) [redhat man page]

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