diff options
| author | Bryan Schumaker <bjschuma@netapp.com> | 2013-04-19 16:09:38 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-07 19:51:56 -0700 |
| commit | 2111a77044c72a3eeda88415e39d094752bbf25a (patch) | |
| tree | a24bb33fd2788b7279a8d52a68a650aee5dad626 | |
| parent | f71ce17ff829f8bf9771f1c7b08daaddce40594f (diff) | |
| download | linux-3.10-2111a77044c72a3eeda88415e39d094752bbf25a.tar.gz linux-3.10-2111a77044c72a3eeda88415e39d094752bbf25a.tar.bz2 linux-3.10-2111a77044c72a3eeda88415e39d094752bbf25a.zip | |
nfsd: Decode and send 64bit time values
commit bf8d909705e9d9bac31d9b8eac6734d2b51332a7 upstream.
The seconds field of an nfstime4 structure is 64bit, but we are assuming
that the first 32bits are zero-filled. So if the client tries to set
atime to a value before the epoch (touch -t 196001010101), then the
server will save the wrong value on disk.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index ace674593e0..17988461303 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -343,10 +343,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, all 32 bits of 'nseconds'. */ READ_BUF(12); len += 12; - READ32(dummy32); - if (dummy32) - return nfserr_inval; - READ32(iattr->ia_atime.tv_sec); + READ64(iattr->ia_atime.tv_sec); READ32(iattr->ia_atime.tv_nsec); if (iattr->ia_atime.tv_nsec >= (u32)1000000000) return nfserr_inval; @@ -369,10 +366,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, all 32 bits of 'nseconds'. */ READ_BUF(12); len += 12; - READ32(dummy32); - if (dummy32) - return nfserr_inval; - READ32(iattr->ia_mtime.tv_sec); + READ64(iattr->ia_mtime.tv_sec); READ32(iattr->ia_mtime.tv_nsec); if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) return nfserr_inval; @@ -2371,8 +2365,7 @@ out_acl: if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { if ((buflen -= 12) < 0) goto out_resource; - WRITE32(0); - WRITE32(stat.atime.tv_sec); + WRITE64((s64)stat.atime.tv_sec); WRITE32(stat.atime.tv_nsec); } if (bmval1 & FATTR4_WORD1_TIME_DELTA) { @@ -2385,15 +2378,13 @@ out_acl: if (bmval1 & FATTR4_WORD1_TIME_METADATA) { if ((buflen -= 12) < 0) goto out_resource; - WRITE32(0); - WRITE32(stat.ctime.tv_sec); + WRITE64((s64)stat.ctime.tv_sec); WRITE32(stat.ctime.tv_nsec); } if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { if ((buflen -= 12) < 0) goto out_resource; - WRITE32(0); - WRITE32(stat.mtime.tv_sec); + WRITE64((s64)stat.mtime.tv_sec); WRITE32(stat.mtime.tv_nsec); } if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { |