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Commit 888b3384 authored by David Howells's avatar David Howells
Browse files

afs: Dump bad status record 



Dump an AFS FileStatus record that is detected as invalid.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
parent 37ab6368

fs/afs/fsclient.c

+35 −0
Original line number Diff line number Diff line
@@ -43,6 +43,26 @@ static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) 
	*_bp = bp;

}



/*

 * 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

 */
@@ -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);

}