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acl_get_qualifier - Retrieves the qualifier for an ACL entry
#include <sys/acl.h>
void * acl_get_qualifier(
acl_entry_t entry_d);
Designates the working storage internal representation ACL entry to retrieve the qualifier from.
NOTE: This function is based on Draft 13 of the POSIX P1003.6 standard. The function may change as the P1003.6 standard is finalized.
The acl_get_qualifier() function retrieves qualifier which is the numerical id associated with the entry. If the entry tag type is ACL_USER *uid_t is returned, if the type is ACL_GROUP a *gid_t is returned, for all other types NULL is returned.
Upon successful completion, the acl_get_qualifier function returns a pointer to the ACL entry qualifier retrieved. Otherwise, a value of NULL is returned and errno is set to indicate the error.
If any of the following conditions occur, the acl_get_qualifier() function sets errno to the corresponding value:
Argument entry_d does not refer to a valid ACL entry.
The value of the tag type in ACL entry referred to by entry_d is ACL_USER_OBJ,ACL_GROUP_OBJ, or ACL_OTHER_OBJ.
acl_create_entry(3), acl_free_qualifier(3), acl_get_entry(3), acl_get_tag_type(3), acl_set_qualifier(3), acl_set_tag_type(3)
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