--- diskdev_cmds-332.14.orig/fsck_hfs.tproj/fsck_hfs.8	2011-04-12 21:21:21.310348367 -0500
+++ diskdev_cmds-332.14.orig/fsck_hfs.tproj/fsck_hfs.8	2011-04-12 21:26:34.252187607 -0500
@@ -27,7 +27,7 @@ 
 .Op Fl df
 .Ar special ...
 .Nm fsck_hfs
-.Fl p
+.Op Fl a | p
 .Op Fl df
 .Ar special ...
 .Nm fsck_hfs
@@ -74,6 +74,10 @@ 
 .Pp
 The options are as follows:
 .Bl -hang -offset indent
+.It Fl a
+This option does the same thing as the
+.Fl p
+option.  It is provided for backwards compatibility.
 .It Fl d
 Display debugging information.
 This option may provide useful information when 
--- diskdev_cmds-332.14.orig/fsck_hfs.tproj/fsck_hfs.c	2011-04-12 20:55:41.936753802 -0500
+++ diskdev_cmds-332.14.orig/fsck_hfs.tproj/fsck_hfs.c	2011-04-12 21:24:43.881075728 -0500
@@ -109,7 +109,7 @@ 
 	else
 		progname = *argv;
 
-	while ((ch = getopt(argc, argv, "dfglm:npqruy")) != EOF) {
+	while ((ch = getopt(argc, argv, "adfglm:npqruy")) != EOF) {
 		switch (ch) {
 		case 'd':
 			debug++;
@@ -145,6 +145,7 @@ 
 			yflag = 0;
 			break;
 
+		case 'a':
 		case 'p':
 			preen++;
 			break;
@@ -529,7 +530,8 @@ 
 static void
 usage()
 {
-	(void) fprintf(stderr, "usage: %s [-dfl m [mode] npqruy] special-device\n", progname);
+	(void) fprintf(stderr, "usage: %s [-adfl m [mode] npqruy] special-device\n", progname);
+	(void) fprintf(stderr, "  a = same as p option for compatiblity\n");
 	(void) fprintf(stderr, "  d = output debugging info\n");
 	(void) fprintf(stderr, "  f = force fsck even if clean (preen only) \n");
 	(void) fprintf(stderr, "  l = live fsck (lock down and test-only)\n");