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ACL_GET_ENTRY (3) | C library functions | Unix Manual Pages | :man

NAME

acl_get_entry - retrieve an ACL entry from an ACL

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards
History
Authors

LIBRARY


.Lb libc

SYNOPSIS


.In sys/types.h
.In sys/acl.h int acl_get_entry "acl_t acl" "int entry_id" "acl_entry_t *entry_p"

DESCRIPTION

The acl_get_entry function is a POSIX.1e call that retrieves a descriptor for an ACL entry specified by the argument entry_d within the ACL indicated by the argument acl.

If the value of entry_id is ACL_FIRST_ENTRY, then the function will return in entry_p a descriptor for the first ACL entry within acl. If a call is made to acl_get_entry with entry_id set to ACL_NEXT_ENTRY when there has not been either an initial successful call to acl_get_entry, or a previous successful call to acl_create_entry, acl_delete_entry, acl_dup, acl_from_text, acl_get_fd, acl_get_file, acl_set_fd, acl_set_file, or acl_valid, then the result is unspecified.

RETURN VALUES

If the acl_get_entry function successfuly obtains an ACL entry, a value of 1 is returned. If the ACL has no ACL entries, the acl_get_entry returns a value of 0. If the value of entry_id is ACL_NEXT_ENTRY and the last ACL entry in the ACL has already been returned by a previous call to acl_get_entry, a value of 0 will be returned until a successful call with entry_id of ACL_FIRST_ENTRY is made. Otherwise, a value of -1 will be returned and the global variable errno will be set to indicate the error.

ERRORS

The acl_get_entry fails if:
[EINVAL]
Argument acl does not point to a valid ACL. Argument entry_id is neither ACL_FIRST_ENTRY nor ACL_NEXT_ENTRY.

SEE ALSO

acl(3), acl_calc_mask(3), acl_create_entry(3), acl_delete_entry(3), acl_dup(3), acl_from_text(3), acl_get_fd(3), acl_get_file(3), acl_init(3), acl_set_fd(3), acl_set_file(3), acl_valid(3), posix1e(3)

STANDARDS

HISTORY

AUTHORS


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