Add NFSv4 ACL support to libc.

This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np.  Most of them are similar to what Darwin
does.  There are no backward-incompatible changes.

Approved by:    rwatson@

1 files changed, 29 insertions, 4 deletions

diff --git a/lib/libc/posix1e/acl_to_text.c b/lib/libc/posix1e/acl_to_text.c
index f2905c3..3485b1e 100644
--- a/lib/libc/posix1e/acl_to_text.c
+++ b/lib/libc/posix1e/acl_to_text.c
@@ -50,8 +50,11 @@ __FBSDID("$FreeBSD$");
  * This function will not produce nice results if it is called with
  * a non-POSIX.1e semantics ACL.
  */
-char *
-acl_to_text(acl_t acl, ssize_t *len_p)
+
+char *_nfs4_acl_to_text_np(const acl_t acl, ssize_t *len_p, int flags);
+
+static char *
+_posix1e_acl_to_text(acl_t acl, ssize_t *len_p, int flags)
 {
 	struct acl	*acl_int;
 	char		*buf, *tmpbuf;
@@ -105,7 +108,7 @@ acl_to_text(acl_t acl, ssize_t *len_p)
 				goto error_label;
 
 			error = _posix1e_acl_id_to_name(ae_tag, ae_id,
-			    UT_NAMESIZE+1, name_buf);
+			    UT_NAMESIZE+1, name_buf, flags);
 			if (error)
 				goto error_label;
 
@@ -165,7 +168,7 @@ acl_to_text(acl_t acl, ssize_t *len_p)
 				goto error_label;
 
 			error = _posix1e_acl_id_to_name(ae_tag, ae_id,
-			    UT_NAMESIZE+1, name_buf);
+			    UT_NAMESIZE+1, name_buf, flags);
 			if (error)
 				goto error_label;
 
@@ -235,3 +238,25 @@ error_label:
 	if (buf) free(buf);
 	return (NULL);
 }
+
+char *
+acl_to_text_np(acl_t acl, ssize_t *len_p, int flags)
+{
+
+	switch (_acl_brand(acl)) {
+	case ACL_BRAND_POSIX:
+		return (_posix1e_acl_to_text(acl, len_p, flags));
+	case ACL_BRAND_NFS4:
+		return (_nfs4_acl_to_text_np(acl, len_p, flags));
+	default:
+		errno = EINVAL;
+		return (NULL);
+	}
+}
+
+char *
+acl_to_text(acl_t acl, ssize_t *len_p)
+{
+
+	return (acl_to_text_np(acl, len_p, 0));
+}