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-rw-r--r--xlators/nfs/server/src/nfs-common.c635
1 files changed, 331 insertions, 304 deletions
diff --git a/xlators/nfs/server/src/nfs-common.c b/xlators/nfs/server/src/nfs-common.c
index b5c56d03df6..b8f6b6f318e 100644
--- a/xlators/nfs/server/src/nfs-common.c
+++ b/xlators/nfs/server/src/nfs-common.c
@@ -2,313 +2,304 @@
Copyright (c) 2010-2011 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
- GlusterFS is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3 of the License,
- or (at your option) any later version.
-
- GlusterFS is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see
- <http://www.gnu.org/licenses/>.
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
*/
-#ifndef _CONFIG_H
-#define _CONFIG_H
-#include "config.h"
-#endif
-
#include "rpcsvc.h"
-#include "dict.h"
-#include "xlator.h"
+#include <glusterfs/dict.h>
+#include <glusterfs/xlator.h>
#include "xdr-nfs3.h"
#include "msg-nfs3.h"
-#include "iobuf.h"
+#include <glusterfs/iobuf.h>
#include "nfs-common.h"
#include "nfs-fops.h"
#include "nfs-mem-types.h"
#include "rpcsvc.h"
-#include "iatt.h"
+#include <glusterfs/iatt.h>
+#include "nfs-messages.h"
#include <libgen.h>
xlator_t *
-nfs_xlid_to_xlator (xlator_list_t *cl, uint8_t xlid)
+nfs_xlid_to_xlator(xlator_list_t *cl, uint8_t xlid)
{
- xlator_t *xl = NULL;
- uint8_t id = 0;
-
- while (id <= xlid) {
- if (!cl) {
- xl = NULL;
- break;
- }
-
- xl = cl->xlator;
- cl = cl->next;
- id++;
+ xlator_t *xl = NULL;
+ uint8_t id = 0;
+
+ while (id <= xlid) {
+ if (!cl) {
+ xl = NULL;
+ break;
}
- return xl;
-}
+ xl = cl->xlator;
+ cl = cl->next;
+ id++;
+ }
+ return xl;
+}
xlator_t *
-nfs_path_to_xlator (xlator_list_t *cl, char *path)
+nfs_path_to_xlator(xlator_list_t *cl, char *path)
{
- return NULL;
+ return NULL;
}
-
uint16_t
-nfs_xlator_to_xlid (xlator_list_t *cl, xlator_t *xl)
+nfs_xlator_to_xlid(xlator_list_t *cl, xlator_t *xl)
{
- uint16_t xlid = 0;
+ uint16_t xlid = 0;
- if ((!cl) || (!xl))
- return 0;
+ if ((!cl) || (!xl))
+ return 0;
- while (cl) {
- if (xl == cl->xlator)
- break;
- cl = cl->next;
- ++xlid;
- }
+ while (cl) {
+ if (xl == cl->xlator)
+ break;
+ cl = cl->next;
+ ++xlid;
+ }
- return xlid;
+ return xlid;
}
-
xlator_t *
-nfs_mntpath_to_xlator (xlator_list_t *cl, char *path)
+nfs_mntpath_to_xlator(xlator_list_t *cl, char *path)
{
- char volname[MNTPATHLEN];
- char *volptr = NULL;
- int pathlen = 0;
- xlator_t *targetxl = NULL;
-
- if ((!cl) || (!path))
- return NULL;
-
- strcpy (volname, path);
- pathlen = strlen (volname);
- gf_log (GF_NFS, GF_LOG_TRACE, "Subvolume search: %s", path);
- if (volname[0] == '/')
- volptr = &volname[1];
- else
- volptr = &volname[0];
-
- if (volname[pathlen - 1] == '/')
- volname[pathlen - 1] = '\0';
-
- while (cl) {
- if (strcmp (volptr, cl->xlator->name) == 0) {
- targetxl = cl->xlator;
- break;
- }
-
- cl = cl->next;
- }
+ char *volname = NULL; /* volume name only */
+ char *volptr = NULL; /* ptr to original volname */
+ size_t pathlen = -1;
+ xlator_t *targetxl = NULL;
+ int i = 0;
- return targetxl;
+ if ((!cl) || (!path))
+ return NULL;
-}
+ gf_msg_trace(GF_NFS, 0, "Subvolume search: %s", path);
+ volname = volptr = gf_strdup(path);
+ if (!volname)
+ return NULL;
-/* Returns 1 if the stat seems to be filled with zeroes. */
-int
-nfs_zero_filled_stat (struct iatt *buf)
-{
- if (!buf)
- return 1;
+ if (volname[0] == '/')
+ volname++;
+
+ pathlen = strlen(volname);
+ for (i = 0; i < pathlen; i++) {
+ if (volname[i] == '/') {
+ volname[i] = '\0';
+ break;
+ }
+ }
- /* Do not use st_dev because it is transformed to store the xlator id
- * in place of the device number. Do not use st_ino because by this time
- * we've already mapped the root ino to 1 so it is not guaranteed to be
- * 0.
- */
- if ((buf->ia_nlink == 0) && (buf->ia_ctime == 0))
- return 1;
+ while (cl) {
+ gf_msg_trace(GF_NFS, 0, "Volname: %s and cl->xlator->name: %s", volname,
+ cl->xlator->name);
- return 0;
-}
+ if (strcmp(volname, cl->xlator->name) == 0) {
+ targetxl = cl->xlator;
+ break;
+ }
+
+ cl = cl->next;
+ }
+ GF_FREE(volptr);
+
+ return targetxl;
+}
void
-nfs_loc_wipe (loc_t *loc)
+nfs_loc_wipe(loc_t *loc)
{
- loc_wipe (loc);
+ loc_wipe(loc);
}
-
int
-nfs_loc_copy (loc_t *dst, loc_t *src)
+nfs_loc_copy(loc_t *dst, loc_t *src)
{
- int ret = -1;
+ int ret = -1;
- ret = loc_copy (dst, src);
+ ret = loc_copy(dst, src);
- return ret;
+ return ret;
}
-
int
-nfs_loc_fill (loc_t *loc, inode_t *inode, inode_t *parent, char *path)
+nfs_loc_fill(loc_t *loc, inode_t *inode, inode_t *parent, char *path)
{
- int ret = -EFAULT;
+ int ret = -EFAULT;
- if (!loc)
- return ret;
-
- if (inode) {
- loc->inode = inode_ref (inode);
- if (!uuid_is_null (inode->gfid))
- uuid_copy (loc->gfid, inode->gfid);
- }
+ if (!loc)
+ return ret;
- if (parent)
- loc->parent = inode_ref (parent);
-
- if (path) {
- loc->path = gf_strdup (path);
- if (!loc->path) {
- gf_log (GF_NFS, GF_LOG_ERROR, "strdup failed");
- goto loc_wipe;
- }
- loc->name = strrchr (loc->path, '/');
- if (loc->name)
- loc->name++;
+ if (inode) {
+ loc->inode = inode_ref(inode);
+ if (!gf_uuid_is_null(inode->gfid))
+ gf_uuid_copy(loc->gfid, inode->gfid);
+ }
+
+ if (parent)
+ loc->parent = inode_ref(parent);
+
+ if (path) {
+ loc->path = gf_strdup(path);
+ if (!loc->path) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
+ "strdup failed");
+ goto loc_wipe;
}
+ loc->name = strrchr(loc->path, '/');
+ if (loc->name)
+ loc->name++;
+ }
- ret = 0;
+ ret = 0;
loc_wipe:
- if (ret < 0)
- nfs_loc_wipe (loc);
+ if (ret < 0)
+ nfs_loc_wipe(loc);
- return ret;
+ return ret;
}
-
int
-nfs_inode_loc_fill (inode_t *inode, loc_t *loc, int how)
+nfs_inode_loc_fill(inode_t *inode, loc_t *loc, int how)
{
- char *resolvedpath = NULL;
- inode_t *parent = NULL;
- int ret = -EFAULT;
+ char *resolvedpath = NULL;
+ inode_t *parent = NULL;
+ int ret = -EFAULT;
- if ((!inode) || (!loc))
- return ret;
-
- ret = inode_path (inode, NULL, &resolvedpath);
- if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "path resolution failed %s",
- resolvedpath);
- goto err;
- }
+ if ((!inode) || (!loc))
+ return ret;
- ret = nfs_loc_fill (loc, inode, parent, resolvedpath);
+ /* If gfid is not null, then the inode is already linked to
+ * the inode table, and not a newly created one. For newly
+ * created inode, inode_path returns null gfid as the path.
+ */
+ if (!gf_uuid_is_null(inode->gfid)) {
+ ret = inode_path(inode, NULL, &resolvedpath);
if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "loc fill resolution failed %s",
- resolvedpath);
- goto err;
+ gf_msg(GF_NFS, GF_LOG_ERROR, 0, NFS_MSG_PATH_RESOLVE_FAIL,
+ "path resolution "
+ "failed %s",
+ resolvedpath);
+ goto err;
}
-
- ret = 0;
+ }
+
+ if (resolvedpath == NULL) {
+ char tmp_path[GFID_STR_PFX_LEN + 1] = {
+ 0,
+ };
+ snprintf(tmp_path, sizeof(tmp_path), "<gfid:%s>", uuid_utoa(loc->gfid));
+ resolvedpath = gf_strdup(tmp_path);
+ } else {
+ parent = inode_parent(inode, loc->pargfid, NULL);
+ }
+
+ ret = nfs_loc_fill(loc, inode, parent, resolvedpath);
+ if (ret < 0) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, -ret, NFS_MSG_LOC_FILL_RESOLVE_FAIL,
+ "loc fill resolution failed %s", resolvedpath);
+ goto err;
+ }
+
+ ret = 0;
err:
- if (parent)
- inode_unref (parent);
+ if (parent)
+ inode_unref(parent);
- if (resolvedpath)
- GF_FREE (resolvedpath);
+ GF_FREE(resolvedpath);
- return ret;
+ return ret;
}
int
-nfs_gfid_loc_fill (inode_table_t *itable, uuid_t gfid, loc_t *loc, int how)
+nfs_gfid_loc_fill(inode_table_t *itable, uuid_t gfid, loc_t *loc, int how)
{
- int ret = -EFAULT;
- inode_t *inode = NULL;
-
- if (!loc)
- return ret;
-
- inode = inode_find (itable, gfid);
- if (!inode) {
- gf_log (GF_NFS, GF_LOG_TRACE, "Inode not found in itable, will try to create one.");
- if (how == NFS_RESOLVE_CREATE) {
- gf_log (GF_NFS, GF_LOG_TRACE, "Inode needs to be created.");
- inode = inode_new (itable);
- if (!inode) {
- gf_log (GF_NFS, GF_LOG_ERROR, "Failed to "
- "allocate memory");
- ret = -ENOMEM;
- goto err;
- }
-
- } else {
- gf_log (GF_NFS, GF_LOG_ERROR, "Inode not found in itable and no creation was requested.");
- ret = -ENOENT;
- goto err;
- }
+ int ret = -EFAULT;
+ inode_t *inode = NULL;
+
+ if (!loc)
+ return ret;
+
+ inode = inode_find(itable, gfid);
+ if (!inode) {
+ gf_msg_trace(GF_NFS, 0,
+ "Inode not found in itable, will "
+ "try to create one.");
+ if (how == NFS_RESOLVE_CREATE) {
+ gf_msg_trace(GF_NFS, 0, "Inode needs to be created.");
+ inode = inode_new(itable);
+ if (!inode) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
+ "Failed to "
+ "allocate memory");
+ ret = -ENOMEM;
+ goto err;
+ }
+
} else {
- gf_log (GF_NFS, GF_LOG_TRACE, "Inode was found in the itable.");
- }
+ gf_msg(GF_NFS, GF_LOG_ERROR, ENOENT, NFS_MSG_INODE_NOT_FOUND,
+ "Inode not found in "
+ "itable and no creation was requested.");
+ ret = -ENOENT;
+ goto err;
+ }
+ } else {
+ gf_msg_trace(GF_NFS, 0, "Inode was found in the itable.");
+ }
- uuid_copy (loc->gfid, gfid);
+ gf_uuid_copy(loc->gfid, gfid);
- ret = nfs_inode_loc_fill (inode, loc, how);
- if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "Inode loc filling failed.: %s", strerror (-ret));
- goto err;
- }
+ ret = nfs_inode_loc_fill(inode, loc, how);
+ if (ret < 0) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, -ret, NFS_MSG_INODE_LOC_FILL_ERROR,
+ "Inode loc filling failed.: %s", strerror(-ret));
+ goto err;
+ }
err:
- if (inode)
- inode_unref (inode);
- return ret;
+ if (inode)
+ inode_unref(inode);
+ return ret;
}
-
int
-nfs_root_loc_fill (inode_table_t *itable, loc_t *loc)
+nfs_root_loc_fill(inode_table_t *itable, loc_t *loc)
{
- uuid_t rootgfid = {0, };
+ static uuid_t rootgfid = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
- rootgfid[15] = 1;
- return nfs_gfid_loc_fill (itable, rootgfid, loc, NFS_RESOLVE_EXIST);
+ return nfs_gfid_loc_fill(itable, rootgfid, loc, NFS_RESOLVE_EXIST);
}
-
-
int
-nfs_parent_inode_loc_fill (inode_t *parent, inode_t *entryinode, char *entry,
- loc_t *loc)
+nfs_parent_inode_loc_fill(inode_t *parent, inode_t *entryinode, char *entry,
+ loc_t *loc)
{
- int ret = -EFAULT;
- char *path = NULL;
+ int ret = -EFAULT;
+ char *path = NULL;
- if ((!parent) || (!entry) || (!loc) || (!entryinode))
- return ret;
+ if ((!parent) || (!entry) || (!loc) || (!entryinode))
+ return ret;
- ret = inode_path (parent, entry, &path);
- if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "path resolution failed %s",
- path);
- goto err;
- }
+ ret = inode_path(parent, entry, &path);
+ if (ret < 0) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, -ret, NFS_MSG_PATH_RESOLVE_FAIL,
+ "path resolution failed %s", path);
+ goto err;
+ }
- ret = nfs_loc_fill (loc, entryinode, parent, path);
- GF_FREE (path);
+ ret = nfs_loc_fill(loc, entryinode, parent, path);
+ GF_FREE(path);
err:
- return ret;
+ return ret;
}
-
/* Returns -1 if parent is not available, return -2 if the entry is not
* available. In case the return is going to be -2, and how = NFS_RESOLVE_CREATE
* it does however fill in the loc so that it can be used to perform a lookup
@@ -316,108 +307,144 @@ err:
* On other errors, return -3. 0 on success.
*/
int
-nfs_entry_loc_fill (inode_table_t *itable, uuid_t pargfid, char *entry,
- loc_t *loc, int how)
+nfs_entry_loc_fill(xlator_t *this, inode_table_t *itable, uuid_t pargfid,
+ char *entry, loc_t *loc, int how, gf_boolean_t *freshlookup)
{
- inode_t *parent = NULL;
- inode_t *entryinode = NULL;
- int ret = -3;
- char *resolvedpath = NULL;
- int pret = -3;
-
- if ((!itable) || (!entry) || (!loc))
- return ret;
-
- parent = inode_find (itable, pargfid);
-
- ret = -1;
- /* Will need hard resolution now */
- if (!parent)
- goto err;
-
- uuid_copy (loc->pargfid, pargfid);
-
- ret = -2;
- entryinode = inode_grep (itable, parent, entry);
- if (!entryinode) {
- if (how == NFS_RESOLVE_CREATE) {
- /* Even though we'll create the inode and the loc for
- * a missing inode, we still need to return -2 so
- * that the caller can use the filled loc to call
- * lookup.
- */
- entryinode = inode_new (itable);
- /* Cannot change ret because that must
- * continue to have -2.
- */
- pret = nfs_parent_inode_loc_fill (parent, entryinode,
- entry, loc);
- /* Only if parent loc fill fails, should we notify error
- * through ret, otherwise, we still need to force a
- * lookup by returning -2.
- */
- if (pret < 0)
- ret = -3;
- }
- goto err;
- }
+ inode_t *parent = NULL;
+ inode_t *entryinode = NULL;
+ int ret = -3;
+ char *resolvedpath = NULL;
+ int pret = -3;
- ret = inode_path (parent, entry, &resolvedpath);
- if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "path resolution failed %s",
- resolvedpath);
- ret = -3;
- goto err;
- }
+ if ((!itable) || (!entry) || (!loc))
+ return ret;
- ret = nfs_loc_fill (loc, entryinode, parent, resolvedpath);
- if (ret < 0) {
- gf_log (GF_NFS, GF_LOG_ERROR, "loc_fill failed %s",
- resolvedpath);
+ parent = inode_find(itable, pargfid);
+
+ ret = -1;
+ /* Will need hard resolution now */
+ if (!parent || inode_ctx_get(parent, this, NULL))
+ goto err;
+
+ gf_uuid_copy(loc->pargfid, pargfid);
+
+ ret = -2;
+ entryinode = inode_grep(itable, parent, entry);
+ if (!entryinode || inode_ctx_get(entryinode, this, NULL)) {
+ if (how == NFS_RESOLVE_CREATE) {
+ /* Even though we'll create the inode and the loc for
+ * a missing inode, we still need to return -2 so
+ * that the caller can use the filled loc to call
+ * lookup.
+ */
+ if (!entryinode) {
+ entryinode = inode_new(itable);
+ if (freshlookup)
+ *freshlookup = _gf_true;
+ }
+ /* Cannot change ret because that must
+ * continue to have -2.
+ */
+ pret = nfs_parent_inode_loc_fill(parent, entryinode, entry, loc);
+ /* Only if parent loc fill fails, should we notify error
+ * through ret, otherwise, we still need to force a
+ * lookup by returning -2.
+ */
+ if (pret < 0)
ret = -3;
}
+ goto err;
+ }
+
+ ret = inode_path(parent, entry, &resolvedpath);
+ if (ret < 0) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, -ret, NFS_MSG_PATH_RESOLVE_FAIL,
+ "path resolution failed %s", resolvedpath);
+ ret = -3;
+ goto err;
+ }
+
+ ret = nfs_loc_fill(loc, entryinode, parent, resolvedpath);
+ if (ret < 0) {
+ gf_msg(GF_NFS, GF_LOG_ERROR, 0, NFS_MSG_INODE_LOC_FILL_ERROR,
+ "loc_fill failed %s", resolvedpath);
+ ret = -3;
+ }
err:
- if (parent)
- inode_unref (parent);
+ if (parent)
+ inode_unref(parent);
- if (entryinode)
- inode_unref (entryinode);
+ if (entryinode)
+ inode_unref(entryinode);
- if (resolvedpath)
- GF_FREE (resolvedpath);
+ GF_FREE(resolvedpath);
- return ret;
+ return ret;
}
-
uint32_t
-nfs_hash_gfid (uuid_t gfid)
+nfs_hash_gfid(uuid_t gfid)
{
- uint32_t hash = 0;
- uint64_t msb64 = 0;
- uint64_t lsb64 = 0;
- uint32_t a1 = 0;
- uint32_t a2 = 0;
- uint32_t a3 = 0;
- uint32_t a4 = 0;
- uint32_t b1 = 0;
- uint32_t b2 = 0;
-
- memcpy (&msb64, &gfid[8], 8);
- memcpy (&lsb64, &gfid[0], 8);
-
- a1 = (msb64 << 32);
- a2 = (msb64 >> 32);
- a3 = (lsb64 << 32);
- a4 = (lsb64 >> 32);
-
- b1 = a1 ^ a4;
- b2 = a2 ^ a3;
-
- hash = b1 ^ b2;
-
- return hash;
-}
+ uint32_t hash = 0;
+ uint64_t msb64 = 0;
+ uint64_t lsb64 = 0;
+ uint32_t a1 = 0;
+ uint32_t a2 = 0;
+ uint32_t a3 = 0;
+ uint32_t a4 = 0;
+ uint32_t b1 = 0;
+ uint32_t b2 = 0;
+
+ if (__is_root_gfid(gfid))
+ return 0x1;
+ memcpy(&msb64, &gfid[8], 8);
+ memcpy(&lsb64, &gfid[0], 8);
+ a1 = (msb64 << 32);
+ a2 = (msb64 >> 32);
+ a3 = (lsb64 << 32);
+ a4 = (lsb64 >> 32);
+
+ b1 = a1 ^ a4;
+ b2 = a2 ^ a3;
+
+ hash = b1 ^ b2;
+
+ return hash;
+}
+
+void
+nfs_fix_generation(xlator_t *this, inode_t *inode)
+{
+ uint64_t raw_ctx = 0;
+ struct nfs_inode_ctx *ictx = NULL;
+ struct nfs_state *priv = NULL;
+ int ret = -1;
+
+ if (!inode) {
+ return;
+ }
+ priv = this->private;
+
+ if (inode_ctx_get(inode, this, &raw_ctx) == 0) {
+ ictx = (struct nfs_inode_ctx *)(uintptr_t)raw_ctx;
+ ictx->generation = priv->generation;
+ } else {
+ ictx = GF_CALLOC(1, sizeof(struct nfs_inode_ctx), gf_nfs_mt_inode_ctx);
+ if (!ictx) {
+ gf_msg(this->name, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
+ "could not allocate nfs inode ctx");
+ return;
+ }
+ INIT_LIST_HEAD(&ictx->shares);
+ ictx->generation = priv->generation;
+ ret = inode_ctx_put(inode, this, (uint64_t)(uintptr_t)ictx);
+ if (ret) {
+ gf_msg(this->name, GF_LOG_ERROR, 0, NFS_MSG_INODE_CTX_STORE_FAIL,
+ "could not store nfs inode ctx");
+ return;
+ }
+ }
+}
generated by cgit (git 2.34.1) at 2025-12-28 11:20:13 +0000