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authorRaghavendra G <raghavendra@zresearch.com>2009-06-04 06:14:31 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-06-11 06:29:17 -0700
commit100a64f457a901bffe6d2d6d3b258fa193cb8517 (patch)
tree2fe69f87d7dab6ce44e8449cd967239fe89408d8 /xlators
parentbf76a04af4862554d6163c43a863afb59a39aafe (diff)
read-ahead: return with error code EBADF for fops on fds without file set in their context.
- since a successful open/create will _always_ set a pointer to ra_file_t in context of fd, this fix makes sense. - an example of operations on bad fd can be afr sending read on the child which was down during open. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
Diffstat (limited to 'xlators')
-rw-r--r--xlators/performance/read-ahead/src/read-ahead.c56
1 files changed, 45 insertions, 11 deletions
diff --git a/xlators/performance/read-ahead/src/read-ahead.c b/xlators/performance/read-ahead/src/read-ahead.c
index 24a10eea04d..b2703ad8d46 100644
--- a/xlators/performance/read-ahead/src/read-ahead.c
+++ b/xlators/performance/read-ahead/src/read-ahead.c
@@ -432,6 +432,13 @@ ra_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
ret = fd_ctx_get (fd, this, &tmp_file);
file = (ra_file_t *)(long)tmp_file;
+ if (file == NULL) {
+ op_errno = EBADF;
+ gf_log (this->name, GF_LOG_DEBUG, "readv received on fd with no"
+ " file set in its context");
+ goto unwind;
+ }
+
if (file->offset != offset) {
gf_log (this->name, GF_LOG_DEBUG,
"unexpected offset (%"PRId64" != %"PRId64") resetting",
@@ -516,19 +523,28 @@ ra_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
ra_file_t *file = NULL;
int ret = 0;
uint64_t tmp_file = 0;
+ int32_t op_errno = 0;
ret = fd_ctx_get (fd, this, &tmp_file);
file = (ra_file_t *)(long)tmp_file;
+ if (file == NULL) {
+ op_errno = EBADF;
+ gf_log (this->name, GF_LOG_DEBUG, "flush received on fd with no"
+ " file set in its context");
+ goto unwind;
+ }
- if (file) {
- flush_region (frame, file, 0, file->pages.prev->offset+1);
- }
+ flush_region (frame, file, 0, file->pages.prev->offset+1);
STACK_WIND (frame, ra_flush_cbk,
FIRST_CHILD (this),
FIRST_CHILD (this)->fops->flush,
fd);
return 0;
+
+unwind:
+ STACK_UNWIND (frame, -1, op_errno);
+ return 0;
}
@@ -538,9 +554,16 @@ ra_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t datasync)
ra_file_t *file = NULL;
int ret = 0;
uint64_t tmp_file = 0;
+ int32_t op_errno = 0;
ret = fd_ctx_get (fd, this, &tmp_file);
file = (ra_file_t *)(long)tmp_file;
+ if (file == NULL) {
+ op_errno = EBADF;
+ gf_log (this->name, GF_LOG_DEBUG, "fsync received on fd with no"
+ " file set in its context");
+ goto unwind;
+ }
if (file) {
flush_region (frame, file, 0, file->pages.prev->offset+1);
@@ -551,6 +574,10 @@ ra_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t datasync)
FIRST_CHILD (this)->fops->fsync,
fd, datasync);
return 0;
+
+unwind:
+ STACK_UNWIND (frame, -1, op_errno);
+ return 0;
}
@@ -568,9 +595,7 @@ ra_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
ret = fd_ctx_get (fd, this, &tmp_file);
file = (ra_file_t *)(long)tmp_file;
- if (file) {
- flush_region (frame, file, 0, file->pages.prev->offset+1);
- }
+ flush_region (frame, file, 0, file->pages.prev->offset+1);
frame->local = NULL;
STACK_UNWIND (frame, op_ret, op_errno, stbuf);
@@ -585,16 +610,21 @@ ra_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
ra_file_t *file = NULL;
int ret = 0;
uint64_t tmp_file = 0;
+ int32_t op_errno = 0;
ret = fd_ctx_get (fd, this, &tmp_file);
file = (ra_file_t *)(long)tmp_file;
+ if (file == NULL) {
+ op_errno = EBADF;
+ gf_log (this->name, GF_LOG_DEBUG, "writev received on fd with"
+ "no file set in its context");
+ goto unwind;
+ }
- if (file) {
- flush_region (frame, file, 0, file->pages.prev->offset+1);
+ flush_region (frame, file, 0, file->pages.prev->offset+1);
- /* reset the read-ahead counters too */
- file->expected = file->page_count = 0;
- }
+ /* reset the read-ahead counters too */
+ file->expected = file->page_count = 0;
frame->local = fd;
@@ -604,6 +634,10 @@ ra_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector,
fd, vector, count, offset, iobref);
return 0;
+
+unwind:
+ STACK_UNWIND (frame, -1, op_errno, NULL);
+ return 0;
}