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| author | David Howells | 2018-04-06 15:17:24 +0200 |
|---|---|---|
| committer | David Howells | 2018-04-09 22:53:52 +0200 |
| commit | 888b33846111927d94dee6d8187c72515160edd3 (patch) | |
| tree | a4e2096226d11d0278ddc2172e0895b39d7cf34c /fs/afs/fsclient.c | |
| parent | afs: Implement @cell substitution handling (diff) | |
| download | kernel-qcow2-linux-888b33846111927d94dee6d8187c72515160edd3.tar.gz kernel-qcow2-linux-888b33846111927d94dee6d8187c72515160edd3.tar.xz kernel-qcow2-linux-888b33846111927d94dee6d8187c72515160edd3.zip | |
afs: Dump bad status record
Dump an AFS FileStatus record that is detected as invalid.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/fsclient.c')
| -rw-r--r-- | fs/afs/fsclient.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 75554ee98d02..90aa3eb2c893 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -44,6 +44,26 @@ static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) } /* + * Dump a bad file status record. + */ +static void xdr_dump_bad(const __be32 *bp) +{ + __be32 x[4]; + int i; + + pr_notice("AFS XDR: Bad status record\n"); + for (i = 0; i < 5 * 4 * 4; i += 16) { + memcpy(x, bp, 16); + bp += 4; + pr_notice("%03x: %08x %08x %08x %08x\n", + i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); + } + + memcpy(x, bp, 4); + pr_notice("0x50: %08x\n", ntohl(x[0])); +} + +/* * decode an AFSFetchStatus block */ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, @@ -97,6 +117,20 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, EXTRACT(status->abort_code); /* spare 4 */ *_bp = bp; + switch (status->type) { + case AFS_FTYPE_FILE: + case AFS_FTYPE_DIR: + case AFS_FTYPE_SYMLINK: + break; + case AFS_FTYPE_INVALID: + if (status->abort_code != 0) + goto out; + /* Fall through */ + default: + xdr_dump_bad(bp - 2); + goto out; + } + if (size != status->size) { status->size = size; changed |= true; @@ -145,6 +179,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, status->data_version = data_version; } +out: if (vnode) write_sequnlock(&vnode->cb_lock); } |