diff options
Diffstat (limited to 'xlators/protocol/server/src/server-common.c')
| -rw-r--r-- | xlators/protocol/server/src/server-common.c | 842 |
1 files changed, 842 insertions, 0 deletions
diff --git a/xlators/protocol/server/src/server-common.c b/xlators/protocol/server/src/server-common.c new file mode 100644 index 00000000000..cd79cf4d930 --- /dev/null +++ b/xlators/protocol/server/src/server-common.c @@ -0,0 +1,842 @@ +#include "server.h" +#include <glusterfs/defaults.h> +#include "rpc-common-xdr.h" +#include "glusterfs3-xdr.h" +#include "glusterfs3.h" +#include <glusterfs/compat-errno.h> +#include "server-messages.h" +#include "server-helpers.h" +#include <glusterfs/defaults.h> +#include <glusterfs/fd.h> +#include "xdr-nfs3.h" + +void +server_post_stat(server_state_t *state, gfs3_stat_rsp *rsp, struct iatt *stbuf) +{ + if (state->client->subdir_mount && + !gf_uuid_compare(stbuf->ia_gfid, state->client->subdir_gfid)) { + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + static uuid_t gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + stbuf->ia_ino = 1; + gf_uuid_copy(stbuf->ia_gfid, gfid); + } + + gf_stat_from_iatt(&rsp->stat, stbuf); +} + +void +server_post_readlink(gfs3_readlink_rsp *rsp, struct iatt *stbuf, + const char *buf) +{ + gf_stat_from_iatt(&rsp->buf, stbuf); + rsp->path = (char *)buf; +} + +void +server_post_mknod(server_state_t *state, gfs3_mknod_rsp *rsp, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, inode_t *inode) +{ + inode_t *link_inode = NULL; + + gf_stat_from_iatt(&rsp->stat, stbuf); + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} + +void +server_post_mkdir(server_state_t *state, gfs3_mkdir_rsp *rsp, inode_t *inode, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + inode_t *link_inode = NULL; + + gf_stat_from_iatt(&rsp->stat, stbuf); + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} + +void +server_post_unlink(server_state_t *state, gfs3_unlink_rsp *rsp, + struct iatt *preparent, struct iatt *postparent) +{ + inode_unlink(state->loc.inode, state->loc.parent, state->loc.name); + + forget_inode_if_no_dentry(state->loc.inode); + + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); +} + +void +server_post_rmdir(server_state_t *state, gfs3_rmdir_rsp *rsp, + struct iatt *preparent, struct iatt *postparent) +{ + inode_unlink(state->loc.inode, state->loc.parent, state->loc.name); + /* parent should not be found for directories after + * inode_unlink, since directories cannot have + * hardlinks. + */ + forget_inode_if_no_dentry(state->loc.inode); + + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); +} + +void +server_post_symlink(server_state_t *state, gfs3_symlink_rsp *rsp, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + inode_t *link_inode = NULL; + + gf_stat_from_iatt(&rsp->stat, stbuf); + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} + +void +server_post_link(server_state_t *state, gfs3_link_rsp *rsp, inode_t *inode, + struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + inode_t *link_inode = NULL; + + gf_stat_from_iatt(&rsp->stat, stbuf); + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc2.parent, state->loc2.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} + +void +server_post_truncate(gfs3_truncate_rsp *rsp, struct iatt *prebuf, + struct iatt *postbuf) +{ + gf_stat_from_iatt(&rsp->prestat, prebuf); + gf_stat_from_iatt(&rsp->poststat, postbuf); +} + +void +server_post_writev(gfs3_write_rsp *rsp, struct iatt *prebuf, + struct iatt *postbuf) +{ + gf_stat_from_iatt(&rsp->prestat, prebuf); + gf_stat_from_iatt(&rsp->poststat, postbuf); +} + +void +server_post_statfs(gfs3_statfs_rsp *rsp, struct statvfs *stbuf) +{ + gf_statfs_from_statfs(&rsp->statfs, stbuf); +} + +void +server_post_fsync(gfs3_fsync_rsp *rsp, struct iatt *prebuf, + struct iatt *postbuf) +{ + gf_stat_from_iatt(&rsp->prestat, prebuf); + gf_stat_from_iatt(&rsp->poststat, postbuf); +} + +void +server_post_ftruncate(gfs3_ftruncate_rsp *rsp, struct iatt *prebuf, + struct iatt *postbuf) +{ + gf_stat_from_iatt(&rsp->prestat, prebuf); + gf_stat_from_iatt(&rsp->poststat, postbuf); +} + +void +server_post_fstat(server_state_t *state, gfs3_fstat_rsp *rsp, + struct iatt *stbuf) +{ + if (state->client->subdir_mount && + !gf_uuid_compare(stbuf->ia_gfid, state->client->subdir_gfid)) { + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + static uuid_t gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + stbuf->ia_ino = 1; + gf_uuid_copy(stbuf->ia_gfid, gfid); + } + + gf_stat_from_iatt(&rsp->stat, stbuf); +} + +void +server_post_lk(xlator_t *this, gfs3_lk_rsp *rsp, struct gf_flock *lock) +{ + switch (lock->l_type) { + case F_RDLCK: + lock->l_type = GF_LK_F_RDLCK; + break; + case F_WRLCK: + lock->l_type = GF_LK_F_WRLCK; + break; + case F_UNLCK: + lock->l_type = GF_LK_F_UNLCK; + break; + default: + gf_msg(this->name, GF_LOG_ERROR, 0, PS_MSG_LOCK_ERROR, + "Unknown lock type: %" PRId32 "!", lock->l_type); + break; + } + + gf_proto_flock_from_flock(&rsp->flock, lock); +} + +int +server_post_readdir(gfs3_readdir_rsp *rsp, gf_dirent_t *entries) +{ + int ret = 0; + + ret = serialize_rsp_dirent(entries, rsp); + + return ret; +} +void +server_post_zerofill(gfs3_zerofill_rsp *rsp, struct iatt *statpre, + struct iatt *statpost) +{ + gf_stat_from_iatt(&rsp->statpre, statpre); + gf_stat_from_iatt(&rsp->statpost, statpost); +} + +void +server_post_discard(gfs3_discard_rsp *rsp, struct iatt *statpre, + struct iatt *statpost) +{ + gf_stat_from_iatt(&rsp->statpre, statpre); + gf_stat_from_iatt(&rsp->statpost, statpost); +} + +void +server_post_fallocate(gfs3_fallocate_rsp *rsp, struct iatt *statpre, + struct iatt *statpost) +{ + gf_stat_from_iatt(&rsp->statpre, statpre); + gf_stat_from_iatt(&rsp->statpost, statpost); +} + +void +server_post_seek(gfs3_seek_rsp *rsp, off_t offset) +{ + rsp->offset = offset; +} + +int +server_post_readdirp(gfs3_readdirp_rsp *rsp, gf_dirent_t *entries) +{ + int ret = 0; + + ret = serialize_rsp_direntp(entries, rsp); + + return ret; +} + +void +server_post_fsetattr(gfs3_fsetattr_rsp *rsp, struct iatt *statpre, + struct iatt *statpost) +{ + gf_stat_from_iatt(&rsp->statpre, statpre); + gf_stat_from_iatt(&rsp->statpost, statpost); +} + +void +server_post_setattr(gfs3_setattr_rsp *rsp, struct iatt *statpre, + struct iatt *statpost) +{ + gf_stat_from_iatt(&rsp->statpre, statpre); + gf_stat_from_iatt(&rsp->statpost, statpost); +} + +void +server_post_rchecksum(gfs3_rchecksum_rsp *rsp, uint32_t weak_checksum, + uint8_t *strong_checksum) +{ + rsp->weak_checksum = weak_checksum; + + rsp->strong_checksum.strong_checksum_val = (char *)strong_checksum; + rsp->strong_checksum.strong_checksum_len = MD5_DIGEST_LENGTH; +} + +void +server_post_rename(call_frame_t *frame, server_state_t *state, + gfs3_rename_rsp *rsp, struct iatt *stbuf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent) +{ + inode_t *tmp_inode = NULL; + + stbuf->ia_type = state->loc.inode->ia_type; + + /* TODO: log gfid of the inodes */ + gf_msg_trace(frame->root->client->bound_xl->name, 0, + "%" PRId64 + ": " + "RENAME_CBK %s ==> %s", + frame->root->unique, state->loc.name, state->loc2.name); + + /* Before renaming the inode, we have to get the inode for the + * destination entry (i.e. inode with state->loc2.parent as + * parent and state->loc2.name as name). If it exists, then + * unlink that inode, and send forget on that inode if the + * unlinked entry is the last entry. In case of fuse client + * the fuse kernel module itself sends the forget on the + * unlinked inode. + */ + tmp_inode = inode_grep(state->loc.inode->table, state->loc2.parent, + state->loc2.name); + if (tmp_inode) { + inode_unlink(tmp_inode, state->loc2.parent, state->loc2.name); + forget_inode_if_no_dentry(tmp_inode); + inode_unref(tmp_inode); + } + + inode_rename(state->itable, state->loc.parent, state->loc.name, + state->loc2.parent, state->loc2.name, state->loc.inode, stbuf); + gf_stat_from_iatt(&rsp->stat, stbuf); + + gf_stat_from_iatt(&rsp->preoldparent, preoldparent); + gf_stat_from_iatt(&rsp->postoldparent, postoldparent); + + gf_stat_from_iatt(&rsp->prenewparent, prenewparent); + gf_stat_from_iatt(&rsp->postnewparent, postnewparent); +} + +int +server_post_open(call_frame_t *frame, xlator_t *this, gfs3_open_rsp *rsp, + fd_t *fd) +{ + server_ctx_t *serv_ctx = NULL; + uint64_t fd_no = 0; + + serv_ctx = server_ctx_get(frame->root->client, this); + if (serv_ctx == NULL) { + gf_msg(this->name, GF_LOG_INFO, 0, PS_MSG_SERVER_CTX_GET_FAILED, + "server_ctx_get() " + "failed"); + return -1; + } + + fd_bind(fd); + fd_ref(fd); + fd_no = gf_fd_unused_get(serv_ctx->fdtable, fd); + rsp->fd = fd_no; + + return 0; +} + +void +server_post_readv(gfs3_read_rsp *rsp, struct iatt *stbuf, int op_ret) +{ + gf_stat_from_iatt(&rsp->stat, stbuf); + rsp->size = op_ret; +} + +int +server_post_opendir(call_frame_t *frame, xlator_t *this, gfs3_opendir_rsp *rsp, + fd_t *fd) +{ + server_ctx_t *serv_ctx = NULL; + uint64_t fd_no = 0; + + serv_ctx = server_ctx_get(frame->root->client, this); + if (serv_ctx == NULL) { + gf_msg(this->name, GF_LOG_INFO, 0, PS_MSG_SERVER_CTX_GET_FAILED, + "server_ctx_get() " + "failed"); + return -1; + } + + fd_bind(fd); + fd_ref(fd); + fd_no = gf_fd_unused_get(serv_ctx->fdtable, fd); + rsp->fd = fd_no; + + return 0; +} + +int +server_post_create(call_frame_t *frame, gfs3_create_rsp *rsp, + server_state_t *state, xlator_t *this, fd_t *fd, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent) +{ + server_ctx_t *serv_ctx = NULL; + inode_t *link_inode = NULL; + uint64_t fd_no = 0; + int op_errno = 0; + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + + if (!link_inode) { + op_errno = ENOENT; + goto out; + } + + if (link_inode != inode) { + /* + VERY racy code (if used anywhere else) + -- don't do this without understanding + */ + + inode_ctx_merge(fd, fd->inode, link_inode); + inode_unref(fd->inode); + fd->inode = inode_ref(link_inode); + } + + inode_lookup(link_inode); + inode_unref(link_inode); + + serv_ctx = server_ctx_get(frame->root->client, this); + if (serv_ctx == NULL) { + gf_msg(this->name, GF_LOG_INFO, 0, PS_MSG_SERVER_CTX_GET_FAILED, + "server_ctx_get() " + "failed"); + goto out; + } + + fd_bind(fd); + fd_ref(fd); + fd_no = gf_fd_unused_get(serv_ctx->fdtable, fd); + + if ((fd_no > UINT64_MAX) || (fd == 0)) { + op_errno = errno; + } + + rsp->fd = fd_no; + gf_stat_from_iatt(&rsp->stat, stbuf); + gf_stat_from_iatt(&rsp->preparent, preparent); + gf_stat_from_iatt(&rsp->postparent, postparent); + + return 0; +out: + return -op_errno; +} + +/*TODO: Handle revalidate path */ +void +server_post_lookup(gfs3_lookup_rsp *rsp, call_frame_t *frame, + server_state_t *state, inode_t *inode, struct iatt *stbuf, + struct iatt *postparent) +{ + inode_t *root_inode = NULL; + inode_t *link_inode = NULL; + static uuid_t rootgfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + root_inode = frame->root->client->bound_xl->itable->root; + + if (!__is_root_gfid(inode->gfid)) { + link_inode = inode_link(inode, state->loc.parent, state->loc.name, + stbuf); + if (link_inode) { + inode_lookup(link_inode); + inode_unref(link_inode); + } + } + + if ((inode == root_inode) || (state->client->subdir_mount && + (inode == state->client->subdir_inode))) { + /* we just looked up root ("/") OR + subdir mount directory, which is root ('/') in client */ + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + stbuf->ia_ino = 1; + gf_uuid_copy(stbuf->ia_gfid, rootgfid); + if (inode->ia_type == 0) + inode->ia_type = stbuf->ia_type; + } + + gf_stat_from_iatt(&rsp->stat, stbuf); +} + +void +server_post_lease(gfs3_lease_rsp *rsp, struct gf_lease *lease) +{ + gf_proto_lease_from_lease(&rsp->lease, lease); +} + +/* Version 4 helpers */ + +void +server4_post_readlink(gfx_readlink_rsp *rsp, struct iatt *stbuf, + const char *buf) +{ + gfx_stat_from_iattx(&rsp->buf, stbuf); + rsp->path = (char *)buf; +} + +void +server4_post_common_3iatt(server_state_t *state, gfx_common_3iatt_rsp *rsp, + inode_t *inode, struct iatt *stbuf, + struct iatt *preparent, struct iatt *postparent) +{ + inode_t *link_inode = NULL; + + gfx_stat_from_iattx(&rsp->stat, stbuf); + if (state->client->subdir_mount && + !gf_uuid_compare(preparent->ia_gfid, state->client->subdir_gfid)) { + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + static uuid_t gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + preparent->ia_ino = 1; + postparent->ia_ino = 1; + gf_uuid_copy(preparent->ia_gfid, gfid); + gf_uuid_copy(postparent->ia_gfid, gfid); + } + + gfx_stat_from_iattx(&rsp->preparent, preparent); + gfx_stat_from_iattx(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} + +void +server4_post_common_3iatt_noinode(gfx_common_3iatt_rsp *rsp, struct iatt *stbuf, + struct iatt *prebuf_dst, + struct iatt *postbuf_dst) +{ + gfx_stat_from_iattx(&rsp->stat, stbuf); + gfx_stat_from_iattx(&rsp->preparent, prebuf_dst); + gfx_stat_from_iattx(&rsp->postparent, postbuf_dst); +} + +void +server4_post_common_2iatt(gfx_common_2iatt_rsp *rsp, struct iatt *prebuf, + struct iatt *postbuf) +{ + gfx_stat_from_iattx(&rsp->prestat, prebuf); + gfx_stat_from_iattx(&rsp->poststat, postbuf); +} + +void +server4_post_entry_remove(server_state_t *state, gfx_common_2iatt_rsp *rsp, + struct iatt *prebuf, struct iatt *postbuf) +{ + inode_unlink(state->loc.inode, state->loc.parent, state->loc.name); + /* parent should not be found for directories after + * inode_unlink, since directories cannot have + * hardlinks. + */ + forget_inode_if_no_dentry(state->loc.inode); + + gfx_stat_from_iattx(&rsp->prestat, prebuf); + gfx_stat_from_iattx(&rsp->poststat, postbuf); +} + +void +server4_post_statfs(gfx_statfs_rsp *rsp, struct statvfs *stbuf) +{ + gf_statfs_from_statfs(&rsp->statfs, stbuf); +} + +void +server4_post_common_iatt(server_state_t *state, gfx_common_iatt_rsp *rsp, + struct iatt *stbuf) +{ + if (state->client->subdir_mount && + !gf_uuid_compare(stbuf->ia_gfid, state->client->subdir_gfid)) { + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + static uuid_t gfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + stbuf->ia_ino = 1; + gf_uuid_copy(stbuf->ia_gfid, gfid); + } + + gfx_stat_from_iattx(&rsp->stat, stbuf); +} + +void +server4_post_lk(xlator_t *this, gfx_lk_rsp *rsp, struct gf_flock *lock) +{ + switch (lock->l_type) { + case F_RDLCK: + lock->l_type = GF_LK_F_RDLCK; + break; + case F_WRLCK: + lock->l_type = GF_LK_F_WRLCK; + break; + case F_UNLCK: + lock->l_type = GF_LK_F_UNLCK; + break; + default: + gf_msg(this->name, GF_LOG_ERROR, 0, PS_MSG_LOCK_ERROR, + "Unknown lock type: %" PRId32 "!", lock->l_type); + break; + } + + gf_proto_flock_from_flock(&rsp->flock, lock); +} + +int +server4_post_readdir(gfx_readdir_rsp *rsp, gf_dirent_t *entries) +{ + int ret = 0; + + ret = serialize_rsp_dirent_v2(entries, rsp); + + return ret; +} + +void +server4_post_seek(gfx_seek_rsp *rsp, off_t offset) +{ + rsp->offset = offset; +} + +int +server4_post_readdirp(gfx_readdirp_rsp *rsp, gf_dirent_t *entries) +{ + int ret = 0; + + ret = serialize_rsp_direntp_v2(entries, rsp); + + return ret; +} + +void +server4_post_rchecksum(gfx_rchecksum_rsp *rsp, uint32_t weak_checksum, + uint8_t *strong_checksum) +{ + rsp->weak_checksum = weak_checksum; + /* When the length encoding changes, update the change + in posix code also. */ + rsp->strong_checksum.strong_checksum_val = (char *)strong_checksum; + rsp->strong_checksum.strong_checksum_len = SHA256_DIGEST_LENGTH; + rsp->flags = 1; /* Indicates SHA256 TYPE */ +} + +void +server4_post_rename(call_frame_t *frame, server_state_t *state, + gfx_rename_rsp *rsp, struct iatt *stbuf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent) +{ + inode_t *tmp_inode = NULL; + + stbuf->ia_type = state->loc.inode->ia_type; + + /* TODO: log gfid of the inodes */ + gf_msg_trace(frame->root->client->bound_xl->name, 0, + "%" PRId64 + ": " + "RENAME_CBK %s ==> %s", + frame->root->unique, state->loc.name, state->loc2.name); + + /* Before renaming the inode, we have to get the inode for the + * destination entry (i.e. inode with state->loc2.parent as + * parent and state->loc2.name as name). If it exists, then + * unlink that inode, and send forget on that inode if the + * unlinked entry is the last entry. In case of fuse client + * the fuse kernel module itself sends the forget on the + * unlinked inode. + */ + tmp_inode = inode_grep(state->loc.inode->table, state->loc2.parent, + state->loc2.name); + if (tmp_inode) { + inode_unlink(tmp_inode, state->loc2.parent, state->loc2.name); + forget_inode_if_no_dentry(tmp_inode); + inode_unref(tmp_inode); + } + + inode_rename(state->itable, state->loc.parent, state->loc.name, + state->loc2.parent, state->loc2.name, state->loc.inode, stbuf); + gfx_stat_from_iattx(&rsp->stat, stbuf); + + gfx_stat_from_iattx(&rsp->preoldparent, preoldparent); + gfx_stat_from_iattx(&rsp->postoldparent, postoldparent); + + gfx_stat_from_iattx(&rsp->prenewparent, prenewparent); + gfx_stat_from_iattx(&rsp->postnewparent, postnewparent); +} + +int +server4_post_open(call_frame_t *frame, xlator_t *this, gfx_open_rsp *rsp, + fd_t *fd) +{ + server_ctx_t *serv_ctx = NULL; + uint64_t fd_no = 0; + + serv_ctx = server_ctx_get(frame->root->client, this); + if (serv_ctx == NULL) { + gf_msg(this->name, GF_LOG_INFO, 0, PS_MSG_SERVER_CTX_GET_FAILED, + "server_ctx_get() " + "failed"); + return -1; + } + + fd_bind(fd); + fd_ref(fd); + fd_no = gf_fd_unused_get(serv_ctx->fdtable, fd); + rsp->fd = fd_no; + + return 0; +} + +void +server4_post_readv(gfx_read_rsp *rsp, struct iatt *stbuf, int op_ret) +{ + gfx_stat_from_iattx(&rsp->stat, stbuf); + rsp->size = op_ret; +} + +int +server4_post_create(call_frame_t *frame, gfx_create_rsp *rsp, + server_state_t *state, xlator_t *this, fd_t *fd, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent) +{ + server_ctx_t *serv_ctx = NULL; + inode_t *link_inode = NULL; + uint64_t fd_no = 0; + int op_errno = 0; + + link_inode = inode_link(inode, state->loc.parent, state->loc.name, stbuf); + + if (!link_inode) { + op_errno = ENOENT; + goto out; + } + + if (link_inode != inode) { + /* + VERY racy code (if used anywhere else) + -- don't do this without understanding + */ + + inode_ctx_merge(fd, fd->inode, link_inode); + inode_unref(fd->inode); + fd->inode = inode_ref(link_inode); + } + + inode_lookup(link_inode); + inode_unref(link_inode); + + serv_ctx = server_ctx_get(frame->root->client, this); + if (serv_ctx == NULL) { + gf_msg(this->name, GF_LOG_INFO, 0, PS_MSG_SERVER_CTX_GET_FAILED, + "server_ctx_get() " + "failed"); + goto out; + } + + fd_bind(fd); + fd_ref(fd); + fd_no = gf_fd_unused_get(serv_ctx->fdtable, fd); + + if ((fd_no > UINT64_MAX) || (fd == 0)) { + op_errno = errno; + } + + rsp->fd = fd_no; + gfx_stat_from_iattx(&rsp->stat, stbuf); + gfx_stat_from_iattx(&rsp->preparent, preparent); + gfx_stat_from_iattx(&rsp->postparent, postparent); + + return 0; +out: + return -op_errno; +} + +/*TODO: Handle revalidate path */ +void +server4_post_lookup(gfx_common_2iatt_rsp *rsp, call_frame_t *frame, + server_state_t *state, inode_t *inode, struct iatt *stbuf) +{ + inode_t *root_inode = NULL; + inode_t *link_inode = NULL; + static uuid_t rootgfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; + + root_inode = frame->root->client->bound_xl->itable->root; + + if (!__is_root_gfid(inode->gfid)) { + link_inode = inode_link(inode, state->loc.parent, state->loc.name, + stbuf); + if (link_inode) { + inode_lookup(link_inode); + inode_unref(link_inode); + } + } + + if ((inode == root_inode) || (state->client->subdir_mount && + (inode == state->client->subdir_inode))) { + /* we just looked up root ("/") OR + subdir mount directory, which is root ('/') in client */ + /* This is very important as when we send iatt of + root-inode, fuse/client expect the gfid to be 1, + along with inode number. As for subdirectory mount, + we use inode table which is shared by everyone, but + make sure we send fops only from subdir and below, + we have to alter inode gfid and send it to client */ + stbuf->ia_ino = 1; + gf_uuid_copy(stbuf->ia_gfid, rootgfid); + if (inode->ia_type == 0) + inode->ia_type = stbuf->ia_type; + } + + gfx_stat_from_iattx(&rsp->prestat, stbuf); +} + +void +server4_post_lease(gfx_lease_rsp *rsp, struct gf_lease *lease) +{ + gf_proto_lease_from_lease(&rsp->lease, lease); +} + +void +server4_post_link(server_state_t *state, gfx_common_3iatt_rsp *rsp, + inode_t *inode, struct iatt *stbuf, struct iatt *preparent, + struct iatt *postparent) +{ + inode_t *link_inode = NULL; + + gfx_stat_from_iattx(&rsp->stat, stbuf); + gfx_stat_from_iattx(&rsp->preparent, preparent); + gfx_stat_from_iattx(&rsp->postparent, postparent); + + link_inode = inode_link(inode, state->loc2.parent, state->loc2.name, stbuf); + inode_lookup(link_inode); + inode_unref(link_inode); +} |