knfsd: nfsd: factor out code from show_expflags

Factor out some code to be shared by secinfo display code.  Remove some
unnecessary conditional printing of commas where we know the condition is
true.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 323cbdc..06d5cd4 100644 (file)
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -1453,28 +1453,35 @@ static struct flags {
        { 0, {"", ""}}
 };
 
-static void exp_flags(struct seq_file *m, int flag, int fsid,
-               uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fsloc)
+static void show_expflags(struct seq_file *m, int flags, int mask)
 {
-       int first = 0;
        struct flags *flg;
+       int state, first = 0;
 
        for (flg = expflags; flg->flag; flg++) {
-               int state = (flg->flag & flag)?0:1;
+               if (flg->flag & ~mask)
+                       continue;
+               state = (flg->flag & flags) ? 0 : 1;
                if (*flg->name[state])
                        seq_printf(m, "%s%s", first++?",":"", flg->name[state]);
        }
+}
+
+static void exp_flags(struct seq_file *m, int flag, int fsid,
+               uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fsloc)
+{
+       show_expflags(m, flag, NFSEXP_ALLFLAGS);
        if (flag & NFSEXP_FSID)
-               seq_printf(m, "%sfsid=%d", first++?",":"", fsid);
+               seq_printf(m, ",fsid=%d", fsid);
        if (anonu != (uid_t)-2 && anonu != (0x10000-2))
-               seq_printf(m, "%sanonuid=%d", first++?",":"", anonu);
+               seq_printf(m, ",sanonuid=%d", anonu);
        if (anong != (gid_t)-2 && anong != (0x10000-2))
-               seq_printf(m, "%sanongid=%d", first++?",":"", anong);
+               seq_printf(m, ",sanongid=%d", anong);
        if (fsloc && fsloc->locations_count > 0) {
                char *loctype = (fsloc->migrated) ? "refer" : "replicas";
                int i;
 
-               seq_printf(m, "%s%s=", first++?",":"", loctype);
+               seq_printf(m, ",%s=", loctype);
                seq_escape(m, fsloc->locations[0].path, ",;@ \t\n\\");
                seq_putc(m, '@');
                seq_escape(m, fsloc->locations[0].hosts, ",;@ \t\n\\");