[PATCH] nfs-utils: add support for the "pnfs" export option

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This goes along with the patch just sent to Bruce to make pnfs
support conditional.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 support/include/nfs/export.h | 1 +
 support/nfs/exports.c        | 3 +++
 utils/exportfs/exportfs.c    | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/support/include/nfs/export.h b/support/include/nfs/export.h
index 2f59e6a..1194255 100644
--- a/support/include/nfs/export.h
+++ b/support/include/nfs/export.h
@@ -26,6 +26,7 @@
 #define	NFSEXP_CROSSMOUNT	0x4000
 #define NFSEXP_NOACL		0x8000 /* reserved for possible ACL related use */
 #define NFSEXP_V4ROOT		0x10000
+#define NFSEXP_PNFS            0x20000
 /*
  * All flags supported by the kernel before addition of the
  * export_features interface:
diff --git a/support/nfs/exports.c b/support/nfs/exports.c
index 4b17d3c..97f9e67 100644
--- a/support/nfs/exports.c
+++ b/support/nfs/exports.c
@@ -275,6 +275,7 @@ putexportent(struct exportent *ep)
 		"no_" : "");
 	if (ep->e_flags & NFSEXP_NOREADDIRPLUS)
 		fprintf(fp, "nordirplus,");
+	fprintf(fp, "%s", (ep->e_flags & NFSEXP_PNFS)? "pnfs," : "");
 	if (ep->e_flags & NFSEXP_FSID) {
 		fprintf(fp, "fsid=%d,", ep->e_fsid);
 	}
@@ -581,6 +582,8 @@ parseopts(char *cp, struct exportent *ep, int warn, int *had_subtree_opt_ptr)
 			clearflags(NFSEXP_NOACL, active, ep);
 		else if (strcmp(opt, "no_acl") == 0)
 			setflags(NFSEXP_NOACL, active, ep);
+		else if (!strcmp(opt, "pnfs"))
+			setflags(NFSEXP_PNFS, active, ep);
 		else if (strncmp(opt, "anonuid=", 8) == 0) {
 			char *oe;
 			ep->e_anonuid = strtol(opt+8, &oe, 10);
diff --git a/utils/exportfs/exportfs.c b/utils/exportfs/exportfs.c
index 48eac00..8758231 100644
--- a/utils/exportfs/exportfs.c
+++ b/utils/exportfs/exportfs.c
@@ -821,6 +821,8 @@ dump(int verbose, int export_format)
 				c = dumpopt(c, "nordirplus");
 			if (ep->e_flags & NFSEXP_NOACL)
 				c = dumpopt(c, "no_acl");
+			if (ep->e_flags & NFSEXP_PNFS)
+				c = dumpopt(c, "pnfs");
 			if (ep->e_flags & NFSEXP_FSID)
 				c = dumpopt(c, "fsid=%d", ep->e_fsid);
 			if (ep->e_uuid)
-- 
1.9.1

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