Return bitmask for supported EXCLUSIVE4_1 create attributes.
Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
---
fs/nfsd/nfs4xdr.c | 7 ++++++-
include/linux/nfs4.h | 2 ++
include/linux/nfsd/nfsd.h | 14 +++++++++++++-
3 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 079626c..288332c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2154,7 +2154,12 @@ out_acl:
}
WRITE64(stat.ino);
}
- BUG_ON(bmval2); /* FIXME: not implemented yet */
+ if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
+ WRITE32(3);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ }
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
*countp = p - buffer;
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index a34683e..735c7d8 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -404,6 +404,8 @@ enum lock_type4 {
#define FATTR4_WORD0_UNIQUE_HANDLES (1UL << 9)
#define FATTR4_WORD0_LEASE_TIME (1UL << 10)
#define FATTR4_WORD0_RDATTR_ERROR (1UL << 11)
+/* Mandatory in NFSv4.1 */
+#define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
/* Recommended Attributes */
#define FATTR4_WORD0_ACL (1UL << 12)
diff --git a/include/linux/nfsd/nfsd.h b/include/linux/nfsd/nfsd.h
index 3dccb76..b9e6682 100644
--- a/include/linux/nfsd/nfsd.h
+++ b/include/linux/nfsd/nfsd.h
@@ -374,7 +374,7 @@ extern struct timeval nfssvc_boot;
NFSD4_SUPPORTED_ATTRS_WORD1
#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
- NFSD4_SUPPORTED_ATTRS_WORD2
+ (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
#if defined(CONFIG_NFSD_V4_1)
@@ -427,6 +427,18 @@ static inline u32 nfsd_suppattrs2(u32 minorversion)
| FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
#define NFSD_WRITEABLE_ATTRS_WORD2 0
+#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
+ NFSD_WRITEABLE_ATTRS_WORD0
+/*
+ * we currently store the exclusive create verifier in the v_{a,m}time
+ * attributes so the client can't set these at create time using EXCLUSIVE4_1
+ */
+#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
+ (NFSD_WRITEABLE_ATTRS_WORD1 & \
+ ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
+#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
+ NFSD_WRITEABLE_ATTRS_WORD2
+
#endif /* CONFIG_NFSD_V4 */
#endif /* LINUX_NFSD_NFSD_H */
--
1.6.2.1
--
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