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authorDavid Howells <dhowells@redhat.com>2020-04-08 18:13:20 +0300
committerDavid Howells <dhowells@redhat.com>2020-05-31 17:19:51 +0300
commit38355eec6a7d2b8f2f313f9174736dc877744e59 (patch)
treec27c84a0214ef1025788181c9e4a0164dc414a78 /fs/afs/yfsclient.c
parent8230fd8217b7ea76f838ae88e4a5a8e54f37099f (diff)
downloadlinux-38355eec6a7d2b8f2f313f9174736dc877744e59.tar.xz
afs: Set error flag rather than return error from file status decode
Set a flag in the call struct to indicate an unmarshalling error rather than return and handle an error from the decoding of file statuses. This flag is checked on a successful return from the delivery function. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/yfsclient.c')
-rw-r--r--fs/afs/yfsclient.c85
1 files changed, 25 insertions, 60 deletions
diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c
index fe413e7a5cf4..f118daa5f33a 100644
--- a/fs/afs/yfsclient.c
+++ b/fs/afs/yfsclient.c
@@ -179,21 +179,20 @@ static void xdr_dump_bad(const __be32 *bp)
/*
* Decode a YFSFetchStatus block
*/
-static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
+static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
{
const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
struct afs_file_status *status = &scb->status;
u32 type;
- int ret;
status->abort_code = ntohl(xdr->abort_code);
if (status->abort_code != 0) {
if (status->abort_code == VNOVNODE)
status->nlink = 0;
scb->have_error = true;
- goto good;
+ goto advance;
}
type = ntohl(xdr->type);
@@ -221,15 +220,13 @@ static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
status->size = xdr_to_u64(xdr->size);
status->data_version = xdr_to_u64(xdr->data_version);
scb->have_status = true;
-good:
- ret = 0;
advance:
*_bp += xdr_size(xdr);
- return ret;
+ return;
bad:
xdr_dump_bad(*_bp);
- ret = afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
goto advance;
}
@@ -348,9 +345,7 @@ static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -372,9 +367,7 @@ static int yfs_deliver_status_and_volsync(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -534,9 +527,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -644,12 +635,8 @@ static int yfs_deliver_fs_create_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -802,14 +789,9 @@ static int yfs_deliver_fs_remove_file2(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSFid(&bp, &fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
/* Was deleted if vnode->status.abort_code == VNOVNODE. */
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -889,10 +871,7 @@ static int yfs_deliver_fs_remove(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
return 0;
}
@@ -974,12 +953,8 @@ static int yfs_deliver_fs_link(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
return 0;
@@ -1061,12 +1036,8 @@ static int yfs_deliver_fs_symlink(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -1154,13 +1125,11 @@ static int yfs_deliver_fs_rename(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
-
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
return 0;
@@ -1845,9 +1814,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
bp = call->buffer;
scb = &call->out_scb[call->count];
- ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, scb);
call->count++;
if (call->count < call->count2)
@@ -2067,9 +2034,7 @@ static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
bp = call->buffer;
yacl->inherit_flag = ntohl(*bp++);
yacl->num_cleaned = ntohl(*bp++);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
call->unmarshall++;