diff options
| author | Raghavendra G <raghavendra@gluster.com> | 2010-08-25 01:40:00 +0000 |
|---|---|---|
| committer | Anand V. Avati <avati@dev.gluster.com> | 2010-08-25 00:41:58 -0700 |
| commit | fb0bb972dfac3c255c53ddc7b588b73a08883288 (patch) | |
| tree | a608564fef9a0a7a43ce99359b3f7e16d45fb2f1 /xlators/protocol | |
| parent | 36ae62ada88b8477994d17527868370a4634999e (diff) | |
storage/posix: calculate the correct size of each dirent in readdir/readdirp.
- In addition to posix, protocol/server also adds a check to make sure that
iobuf allocated to hold readdir/readdirp response can hold all the dentries,
rpc and proc (readdir/readdirp) header.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 1430 (encoding of readdirp response fails occasionally)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1430
Diffstat (limited to 'xlators/protocol')
| -rw-r--r-- | xlators/protocol/server/src/server3_1-fops.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/xlators/protocol/server/src/server3_1-fops.c b/xlators/protocol/server/src/server3_1-fops.c index 69f37d6b3..c73f3df15 100644 --- a/xlators/protocol/server/src/server3_1-fops.c +++ b/xlators/protocol/server/src/server3_1-fops.c @@ -3868,9 +3868,10 @@ out: int server_readdirp (rpcsvc_request_t *req) { - server_state_t *state = NULL; - call_frame_t *frame = NULL; - gfs3_readdirp_req args = {0,}; + server_state_t *state = NULL; + call_frame_t *frame = NULL; + gfs3_readdirp_req args = {0,}; + size_t headers_size = 0; if (!req) return 0; @@ -3896,9 +3897,19 @@ server_readdirp (rpcsvc_request_t *req) goto out; } + /* FIXME: this should go away when variable sized iobufs are introduced + * and transport layer can send msgs bigger than current page-size. + */ + headers_size = sizeof (struct rpc_msg) + sizeof (gfs3_readdir_rsp); + if ((frame->this->ctx->page_size < args.size) + || ((frame->this->ctx->page_size - args.size) < headers_size)) { + state->size = frame->this->ctx->page_size - headers_size; + } else { + state->size = args.size; + } + state->resolve.type = RESOLVE_MUST; state->resolve.fd_no = args.fd; - state->size = args.size; state->offset = args.offset; resolve_and_resume (frame, server_readdirp_resume); @@ -3909,9 +3920,10 @@ out: int server_readdir (rpcsvc_request_t *req) { - server_state_t *state = NULL; - call_frame_t *frame = NULL; - gfs3_readdir_req args = {0,}; + server_state_t *state = NULL; + call_frame_t *frame = NULL; + gfs3_readdir_req args = {0,}; + size_t headers_size = 0; if (!req) return 0; @@ -3937,9 +3949,19 @@ server_readdir (rpcsvc_request_t *req) goto out; } + /* FIXME: this should go away when variable sized iobufs are introduced + * and transport layer can send msgs bigger than current page-size. + */ + headers_size = sizeof (struct rpc_msg) + sizeof (gfs3_readdir_rsp); + if ((frame->this->ctx->page_size < args.size) + || ((frame->this->ctx->page_size - args.size) < headers_size)) { + state->size = frame->this->ctx->page_size - headers_size; + } else { + state->size = args.size; + } + state->resolve.type = RESOLVE_MUST; state->resolve.fd_no = args.fd; - state->size = args.size; state->offset = args.offset; resolve_and_resume (frame, server_readdir_resume); |