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authorNeilBrown <neilb@cse.unsw.edu.au>2005-11-07 01:00:25 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:48 -0800
commit70c3b76c28b012452d63bb27f6d0517afb05d86f (patch)
tree836c24891039fde8a59ee5db37def144bce16b90 /include/linux/nfsd/syscall.h
parent7390022d697bcc62a7556d6fdc61ec56ce3a381a (diff)
[PATCH] knfsd: Allow run-time selection of NFS versions to export
Provide a file in the NFSD filesystem that allows setting and querying of which version of NFS are being exported. Changes are only allowed while no server is running. Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/nfsd/syscall.h')
-rw-r--r--include/linux/nfsd/syscall.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/nfsd/syscall.h b/include/linux/nfsd/syscall.h
index e65c9db6d13f..781efbf94ed3 100644
--- a/include/linux/nfsd/syscall.h
+++ b/include/linux/nfsd/syscall.h
@@ -39,6 +39,21 @@
#define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */
#define NFSCTL_GETFS 8 /* get an fh by path with max FH len */
+/*
+ * Macros used to set version
+ */
+#define NFSCTL_VERSET(_cltbits, _v) ((_cltbits) |= (1 << (_v)))
+#define NFSCTL_VERUNSET(_cltbits, _v) ((_cltbits) &= ~(1 << (_v)))
+#define NFSCTL_VERISSET(_cltbits, _v) ((_cltbits) & (1 << (_v)))
+
+#if defined(CONFIG_NFSD_V4)
+#define NFSCTL_VERALL (0x1c /* 0b011100 */)
+#elif defined(CONFIG_NFSD_V3)
+#define NFSCTL_VERALL (0x0c /* 0b001100 */)
+#else
+#define NFSCTL_VERALL (0x04 /* 0b000100 */)
+#endif
+
/* SVC */
struct nfsctl_svc {
unsigned short svc_port;
@@ -120,6 +135,8 @@ extern int exp_delclient(struct nfsctl_client *ncp);
extern int exp_export(struct nfsctl_export *nxp);
extern int exp_unexport(struct nfsctl_export *nxp);
+extern unsigned int nfsd_versbits;
+
#endif /* __KERNEL__ */
#endif /* NFSD_SYSCALL_H */