getacl, fgetacl - get access control list (ACL) information (HFS File
const char *path,
struct acl_entry *acl
int fgetacl(int fildes, int nentries, struct acl_entry *acl);
getacl() returns a complete listing of all ACL entries (uid.gid, mode)
in an existing file's access control list. path points to a path name
of a file.
Similarly, fgetacl() returns a complete listing of all ACL entries for
an open file known by the file descriptor fildes.
nentries is the number of entries being reported on, and is never more
than the constant NACLENTRIES defined in <sys/acl.h>. If nentries is
non-zero, it must be at least as large as the number of entries in the
file's ACL, including base entries (see setacl(2)). getacl() returns
the number of entries in the file's ACL, as well as the ACL entries
themselves in the array of structures acl declared by the calling
If nentries is zero, getacl() returns the number of entries in the
file's ACL, including base ACL entries, and acl is ignored.
Entries are reported in groups of decreasing order of specificity (see
setacl(2)), then sorted in each group by user ID and group ID. The
content of array entries beyond the number of defined entries for the
file is undefined.
Upon successful completion, getacl() and fgetacl() return a non-
negative value. If an error occurs, a value of -1 is returned, and
errno is set to indicate the error.
getacl() or fgetacl() fail to modify the acl array if any of the
following is true:
[ENOTDIR] A component of the path prefix is not a directory.
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000
[ENOENT] The named file does not exist (for example, path
is null or a component of path does not exist).
[EBADF] fildes is not a valid file descriptor.
[EACCES] A component of the path prefix denies search
[EFAULT] path or a portion of acl to be written points
outside the allocated address space of the
[EINVAL] nentries is non-zero and less than the number of
entries in the file's ACL, or it is greater than
[EOPNOTSUPP] getacl() is not supported on remote files by some
[ENOSYS] The function is not supported by this file system
[ENFILE] The system file table is full.
[ENAMETOOLONG] The length of path exceeds PATH_MAX bytes, or the
length of a component of path exceeds NAME_MAX
bytes while _POSIX_NO_TRUNC is in effect.
[ELOOP] Too many symbolic links were encountered in
translating the path name.
The following call returns the number of entries in the ACL on file
entries = getacl ("/users/bill/mcfile", 0, (struct acl_entry *) 0);
The following call returns in acl all entries in the ACL on the file
opened with file descriptor 5.
struct acl_entry acl [NACLENTRIES];
entries = fgetacl (5, NACLENTRIES, acl);
getacl() and fgetacl() are only supported on HFS file system on
Hewlett-Packard Company - 2 - HP-UX Release 11i: November 2000
standard HP-UX operating system.
getacl() and fgetacl() were developed by HP.
access(2), chmod(2), getaccess(2), setacl(2), stat(2), unistd(5).
Hewlett-Packard Company - 3 - HP-UX Release 11i: November 2000