Make fstest work out-of-the-box on Solaris:

- Solaris' setgroups(2) doesn't change process' effective gid, so set it
  explicitly.
- POSIX doesn't define O_NOFOLLOW. FreeBSD returns EMLINK when target is
  a symbolic link, but Solaris returns ELOOP then.
- Solaris doesn't define O_SHLOCK and O_EXLOCK flags.

Approved by:	re (rwatson)

tools/regression/fstest/fstest.c

@@ -530,6 +530,10 @@ set_gids(char *gids)
 		fprintf(stderr, "cannot change groups: %s\n", strerror(errno));
 		exit(1);
 	}
+	if (setegid(gidset[0]) < 0) {
+		fprintf(stderr, "cannot change effective gid: %s\n", strerror(errno));
+		exit(1);
+	}
 	free(gidset);
 }
 

tools/regression/fstest/tests/open/16.t

@@ -1,7 +1,7 @@
 #!/bin/sh
 # $FreeBSD$
 
-desc="open returns EMLINK when O_NOFOLLOW was specified and the target is a symbolic link"
+desc="open returns EMLINK/ELOOP when O_NOFOLLOW was specified and the target is a symbolic link"
 
 dir=`dirname $0`
 . ${dir}/../misc.sh
@@ -12,8 +12,18 @@ n0=`namegen`
 n1=`namegen`
 
 expect 0 symlink ${n0} ${n1}
+case "${os}" in
+SunOS)
+	expect ELOOP open ${n1} O_RDONLY,O_CREAT,O_NOFOLLOW 0644
+	expect ELOOP open ${n1} O_RDONLY,O_NOFOLLOW
+	expect ELOOP open ${n1} O_WRONLY,O_NOFOLLOW
+	expect ELOOP open ${n1} O_RDWR,O_NOFOLLOW
+	;;
+*)
 	expect EMLINK open ${n1} O_RDONLY,O_CREAT,O_NOFOLLOW 0644
 	expect EMLINK open ${n1} O_RDONLY,O_NOFOLLOW
 	expect EMLINK open ${n1} O_WRONLY,O_NOFOLLOW
 	expect EMLINK open ${n1} O_RDWR,O_NOFOLLOW
+	;;
+esac
 expect 0 unlink ${n1}

tools/regression/fstest/tests/open/18.t

@@ -6,6 +6,8 @@ desc="open returns EWOULDBLOCK when O_NONBLOCK and one of O_SHLOCK or O_EXLOCK i
 dir=`dirname $0`
 . ${dir}/../misc.sh
 
+case "${os}" in
+FreeBSD)
 	echo "1..6"
 
 	n0=`namegen`
@@ -16,3 +18,8 @@ expect "EWOULDBLOCK|EAGAIN" open ${n0} O_RDONLY,O_EXLOCK : open ${n0} O_RDONLY,O
 	expect "EWOULDBLOCK|EAGAIN" open ${n0} O_RDONLY,O_SHLOCK : open ${n0} O_RDONLY,O_EXLOCK,O_NONBLOCK
 	expect "EWOULDBLOCK|EAGAIN" open ${n0} O_RDONLY,O_EXLOCK : open ${n0} O_RDONLY,O_SHLOCK,O_NONBLOCK
 	expect 0 unlink ${n0}
+	;;
+*)
+	quick_exit
+	;;
+esac