diff options
Diffstat (limited to 'xlators/features/sdfs/src/sdfs.c')
| -rw-r--r-- | xlators/features/sdfs/src/sdfs.c | 147 |
1 files changed, 144 insertions, 3 deletions
diff --git a/xlators/features/sdfs/src/sdfs.c b/xlators/features/sdfs/src/sdfs.c index 0c45cad6238..66ba874f646 100644 --- a/xlators/features/sdfs/src/sdfs.c +++ b/xlators/features/sdfs/src/sdfs.c @@ -118,7 +118,7 @@ out: } static int -sdfs_get_new_frame (call_frame_t *frame, loc_t *loc, call_frame_t **new_frame) +sdfs_get_new_frame_common (call_frame_t *frame, call_frame_t **new_frame) { int ret = -1; sdfs_local_t *local = NULL; @@ -132,6 +132,7 @@ sdfs_get_new_frame (call_frame_t *frame, loc_t *loc, call_frame_t **new_frame) client = frame->root->client; gf_client_ref (client); (*new_frame)->root->client = client; + local = sdfs_local_init (*new_frame, THIS); if (!local) { goto err; @@ -139,6 +140,29 @@ sdfs_get_new_frame (call_frame_t *frame, loc_t *loc, call_frame_t **new_frame) local->main_frame = frame; + ret = 0; +err: + if ((ret == -1) && (*new_frame)) { + SDFS_STACK_DESTROY ((*new_frame)); + *new_frame = NULL; + } + + return ret; +} + +static int +sdfs_get_new_frame (call_frame_t *frame, loc_t *loc, call_frame_t **new_frame) +{ + int ret = -1; + sdfs_local_t *local = NULL; + + ret = sdfs_get_new_frame_common (frame, new_frame); + if (ret < 0) { + goto err; + } + + local = (*new_frame)->local; + ret = sdfs_build_parent_loc (&local->parent_loc, loc); if (ret) { goto err; @@ -151,9 +175,32 @@ sdfs_get_new_frame (call_frame_t *frame, loc_t *loc, call_frame_t **new_frame) ret = 0; err: - if (ret == -1) { - SDFS_STACK_DESTROY (frame); + if ((ret < 0) && (*new_frame != NULL)) { + SDFS_STACK_DESTROY ((*new_frame)); + *new_frame = NULL; } + + return ret; +} + +static int +sdfs_get_new_frame_readdirp (call_frame_t *frame, fd_t *fd, + call_frame_t **new_frame) +{ + int ret = -1; + sdfs_local_t *local = NULL; + + ret = sdfs_get_new_frame_common (frame, new_frame); + if (ret < 0) { + goto err; + } + + local = (*new_frame)->local; + local->parent_loc.inode = inode_ref (fd->inode); + gf_uuid_copy (local->parent_loc.gfid, fd->inode->gfid); + + ret = 0; +err: return ret; } @@ -1305,6 +1352,99 @@ err: return 0; } +int32_t +sdfs_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, gf_dirent_t *entries, + dict_t *xdata) +{ + sdfs_local_t *local = NULL; + + local = frame->local; + STACK_UNWIND_STRICT (readdirp, local->main_frame, op_ret, op_errno, + entries, xdata); + + local->main_frame = NULL; + STACK_WIND (frame, sdfs_entrylk_cbk, FIRST_CHILD (this), + FIRST_CHILD(this)->fops->entrylk, + this->name, &local->parent_loc, NULL, + ENTRYLK_UNLOCK, ENTRYLK_RDLCK, xdata); + return 0; +} + +int32_t +sdfs_readdirp_helper (call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t off, dict_t *xdata) +{ + sdfs_local_t *local = NULL; + char gfid[GF_UUID_BUF_SIZE] = {0}; + + local = frame->local; + + gf_uuid_unparse(fd->inode->gfid, gfid); + + if (local->op_ret < 0) { + gf_msg (this->name, GF_LOG_ERROR, 0, + SDFS_MSG_ENTRYLK_ERROR, + "Acquiring entry lock failed for directory %s " + "with parent gfid %s", local->loc.name, gfid); + goto err; + } + + STACK_WIND (frame, sdfs_readdirp_cbk, FIRST_CHILD(this), + FIRST_CHILD(this)->fops->readdirp, fd, size, off, xdata); + + return 0; +err: + STACK_UNWIND_STRICT (readdirp, local->main_frame, -1, local->op_errno, + NULL, NULL); + + local->main_frame = NULL; + + SDFS_STACK_DESTROY (frame); + return 0; +} + +int32_t +sdfs_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off, dict_t *xdata) +{ + sdfs_local_t *local = NULL; + call_frame_t *new_frame = NULL; + call_stub_t *stub = NULL; + int op_errno = 0; + + if (-1 == sdfs_get_new_frame_readdirp (frame, fd, &new_frame)) { + op_errno = ENOMEM; + goto err; + } + + stub = fop_readdirp_stub (new_frame, sdfs_readdirp_helper, fd, size, + off, xdata); + if (!stub) { + op_errno = ENOMEM; + goto err; + } + + local = new_frame->local; + local->stub = stub; + + STACK_WIND (new_frame, sdfs_entrylk_cbk, + FIRST_CHILD (this), + FIRST_CHILD(this)->fops->entrylk, + this->name, &local->parent_loc, NULL, + ENTRYLK_LOCK, ENTRYLK_RDLCK, xdata); + + return 0; + +err: + STACK_UNWIND_STRICT (readdirp, frame, -1, op_errno, NULL, NULL); + + if (new_frame) + SDFS_STACK_DESTROY (new_frame); + + return 0; +} + int init (xlator_t *this) { @@ -1351,6 +1491,7 @@ struct xlator_fops fops = { .mknod = sdfs_mknod, .rename = sdfs_rename, .lookup = sdfs_lookup, + .readdirp = sdfs_readdirp, }; struct xlator_cbks cbks; |