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authorChristoph Hellwig <hch@lst.de>2015-01-22 12:09:50 +0100
committerJ. Bruce Fields <bfields@redhat.com>2015-01-23 16:29:13 +0100
commit4c94e13e9caed09103419c087f436d79f9d2faba (patch)
tree4d2703e464e1f165b42ae3957eeab418f7ed474a
parentsunrpc/lockd: fix references to the BKL (diff)
downloadlinux-4c94e13e9caed09103419c087f436d79f9d2faba.tar.xz
linux-4c94e13e9caed09103419c087f436d79f9d2faba.zip
nfsd: factor out a helper to decode nfstime4 values
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
-rw-r--r--fs/nfsd/nfs4xdr.c43
1 files changed, 26 insertions, 17 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 91f7a3644ffb..974533e5a427 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -234,6 +234,26 @@ static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)
return ret;
}
+/*
+ * We require the high 32 bits of 'seconds' to be 0, and
+ * we ignore all 32 bits of 'nseconds'.
+ */
+static __be32
+nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv)
+{
+ DECODE_HEAD;
+ u64 sec;
+
+ READ_BUF(12);
+ p = xdr_decode_hyper(p, &sec);
+ tv->tv_sec = sec;
+ tv->tv_nsec = be32_to_cpup(p++);
+ if (tv->tv_nsec >= (u32)1000000000)
+ return nfserr_inval;
+
+ DECODE_TAIL;
+}
+
static __be32
nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
{
@@ -267,7 +287,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
{
int expected_len, len = 0;
u32 dummy32;
- u64 sec;
char *buf;
DECODE_HEAD;
@@ -358,15 +377,10 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
dummy32 = be32_to_cpup(p++);
switch (dummy32) {
case NFS4_SET_TO_CLIENT_TIME:
- /* We require the high 32 bits of 'seconds' to be 0, and we ignore
- all 32 bits of 'nseconds'. */
- READ_BUF(12);
len += 12;
- p = xdr_decode_hyper(p, &sec);
- iattr->ia_atime.tv_sec = (time_t)sec;
- iattr->ia_atime.tv_nsec = be32_to_cpup(p++);
- if (iattr->ia_atime.tv_nsec >= (u32)1000000000)
- return nfserr_inval;
+ status = nfsd4_decode_time(argp, &iattr->ia_atime);
+ if (status)
+ return status;
iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
break;
case NFS4_SET_TO_SERVER_TIME:
@@ -382,15 +396,10 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
dummy32 = be32_to_cpup(p++);
switch (dummy32) {
case NFS4_SET_TO_CLIENT_TIME:
- /* We require the high 32 bits of 'seconds' to be 0, and we ignore
- all 32 bits of 'nseconds'. */
- READ_BUF(12);
len += 12;
- p = xdr_decode_hyper(p, &sec);
- iattr->ia_mtime.tv_sec = sec;
- iattr->ia_mtime.tv_nsec = be32_to_cpup(p++);
- if (iattr->ia_mtime.tv_nsec >= (u32)1000000000)
- return nfserr_inval;
+ status = nfsd4_decode_time(argp, &iattr->ia_mtime);
+ if (status)
+ return status;
iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
break;
case NFS4_SET_TO_SERVER_TIME: