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-rw-r--r--source4/ntvfs/posix/pvfs_rename.c675
1 files changed, 675 insertions, 0 deletions
diff --git a/source4/ntvfs/posix/pvfs_rename.c b/source4/ntvfs/posix/pvfs_rename.c
new file mode 100644
index 0000000..4327161
--- /dev/null
+++ b/source4/ntvfs/posix/pvfs_rename.c
@@ -0,0 +1,675 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ POSIX NTVFS backend - rename
+
+ Copyright (C) Andrew Tridgell 2004
+
+ This program 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.
+
+ This program 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/>.
+*/
+
+#include "includes.h"
+#include "vfs_posix.h"
+#include "librpc/gen_ndr/security.h"
+#include "param/param.h"
+
+
+/*
+ do a file rename, and send any notify triggers
+*/
+NTSTATUS pvfs_do_rename(struct pvfs_state *pvfs,
+ struct odb_lock *lck,
+ const struct pvfs_filename *name1,
+ const char *name2)
+{
+ const char *r1, *r2;
+ uint32_t mask;
+ NTSTATUS status;
+
+ if (pvfs_sys_rename(pvfs, name1->full_name, name2,
+ name1->allow_override) == -1) {
+ return pvfs_map_errno(pvfs, errno);
+ }
+
+ status = odb_rename(lck, name2);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ if (name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
+ mask = FILE_NOTIFY_CHANGE_DIR_NAME;
+ } else {
+ mask = FILE_NOTIFY_CHANGE_FILE_NAME;
+ }
+ /*
+ renames to the same directory cause a OLD_NAME->NEW_NAME notify.
+ renames to a different directory are considered a remove/add
+ */
+ r1 = strrchr_m(name1->full_name, '/');
+ r2 = strrchr_m(name2, '/');
+
+ if ((r1-name1->full_name) != (r2-name2) ||
+ strncmp(name1->full_name, name2, r1-name1->full_name) != 0) {
+ notify_trigger(pvfs->notify_context,
+ NOTIFY_ACTION_REMOVED,
+ mask,
+ name1->full_name);
+ notify_trigger(pvfs->notify_context,
+ NOTIFY_ACTION_ADDED,
+ mask,
+ name2);
+ } else {
+ notify_trigger(pvfs->notify_context,
+ NOTIFY_ACTION_OLD_NAME,
+ mask,
+ name1->full_name);
+ notify_trigger(pvfs->notify_context,
+ NOTIFY_ACTION_NEW_NAME,
+ mask,
+ name2);
+ }
+
+ /* this is a strange one. w2k3 gives an additional event for CHANGE_ATTRIBUTES
+ and CHANGE_CREATION on the new file when renaming files, but not
+ directories */
+ if ((name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) == 0) {
+ notify_trigger(pvfs->notify_context,
+ NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES|FILE_NOTIFY_CHANGE_CREATION,
+ name2);
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ resolve a wildcard rename pattern. This works on one component of the name
+*/
+static const char *pvfs_resolve_wildcard_component(TALLOC_CTX *mem_ctx,
+ const char *fname,
+ const char *pattern)
+{
+ const char *p1, *p2;
+ char *dest, *d;
+
+ /* the length is bounded by the length of the two strings combined */
+ dest = talloc_array(mem_ctx, char, strlen(fname) + strlen(pattern) + 1);
+ if (dest == NULL) {
+ return NULL;
+ }
+
+ p1 = fname;
+ p2 = pattern;
+ d = dest;
+
+ while (*p2) {
+ codepoint_t c1, c2;
+ size_t c_size1, c_size2;
+ c1 = next_codepoint(p1, &c_size1);
+ c2 = next_codepoint(p2, &c_size2);
+ if (c2 == '?') {
+ d += push_codepoint(d, c1);
+ } else if (c2 == '*') {
+ memcpy(d, p1, strlen(p1));
+ d += strlen(p1);
+ break;
+ } else {
+ d += push_codepoint(d, c2);
+ }
+
+ p1 += c_size1;
+ p2 += c_size2;
+ }
+
+ *d = 0;
+
+ talloc_set_name_const(dest, dest);
+
+ return dest;
+}
+
+/*
+ resolve a wildcard rename pattern.
+*/
+static const char *pvfs_resolve_wildcard(TALLOC_CTX *mem_ctx,
+ const char *fname,
+ const char *pattern)
+{
+ const char *base1, *base2;
+ const char *ext1, *ext2;
+ char *p;
+
+ /* break into base part plus extension */
+ p = strrchr_m(fname, '.');
+ if (p == NULL) {
+ ext1 = "";
+ base1 = fname;
+ } else {
+ ext1 = talloc_strdup(mem_ctx, p+1);
+ base1 = talloc_strndup(mem_ctx, fname, p-fname);
+ }
+ if (ext1 == NULL || base1 == NULL) {
+ return NULL;
+ }
+
+ p = strrchr_m(pattern, '.');
+ if (p == NULL) {
+ ext2 = "";
+ base2 = fname;
+ } else {
+ ext2 = talloc_strdup(mem_ctx, p+1);
+ base2 = talloc_strndup(mem_ctx, pattern, p-pattern);
+ }
+ if (ext2 == NULL || base2 == NULL) {
+ return NULL;
+ }
+
+ base1 = pvfs_resolve_wildcard_component(mem_ctx, base1, base2);
+ ext1 = pvfs_resolve_wildcard_component(mem_ctx, ext1, ext2);
+ if (base1 == NULL || ext1 == NULL) {
+ return NULL;
+ }
+
+ if (*ext1 == 0) {
+ return base1;
+ }
+
+ return talloc_asprintf(mem_ctx, "%s.%s", base1, ext1);
+}
+
+/*
+ retry an rename after a sharing violation
+*/
+static void pvfs_retry_rename(struct pvfs_odb_retry *r,
+ struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req,
+ void *_io,
+ void *private_data,
+ enum pvfs_wait_notice reason)
+{
+ union smb_rename *io = talloc_get_type(_io, union smb_rename);
+ NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
+
+ talloc_free(r);
+
+ switch (reason) {
+ case PVFS_WAIT_CANCEL:
+/*TODO*/
+ status = NT_STATUS_CANCELLED;
+ break;
+ case PVFS_WAIT_TIMEOUT:
+ /* if it timed out, then give the failure
+ immediately */
+/*TODO*/
+ status = NT_STATUS_SHARING_VIOLATION;
+ break;
+ case PVFS_WAIT_EVENT:
+
+ /* try the open again, which could trigger another retry setup
+ if it wants to, so we have to unmark the async flag so we
+ will know if it does a second async reply */
+ req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+ status = pvfs_rename(ntvfs, req, io);
+ if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+ /* the 2nd try also replied async, so we don't send
+ the reply yet */
+ return;
+ }
+
+ /* re-mark it async, just in case someone up the chain does
+ paranoid checking */
+ req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+ break;
+ }
+
+ /* send the reply up the chain */
+ req->async_states->status = status;
+ req->async_states->send_fn(req);
+}
+
+/*
+ setup for a rename retry after a sharing violation
+ or a non granted oplock
+*/
+static NTSTATUS pvfs_rename_setup_retry(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req,
+ union smb_rename *io,
+ struct odb_lock *lck,
+ NTSTATUS status)
+{
+ struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+ struct pvfs_state);
+ struct timeval end_time;
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+ end_time = timeval_add(&req->statistics.request_time,
+ 0, pvfs->sharing_violation_delay);
+ } else if (NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+ end_time = timeval_add(&req->statistics.request_time,
+ pvfs->oplock_break_timeout, 0);
+ } else {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io, NULL,
+ pvfs_retry_rename);
+}
+
+/*
+ rename one file from a wildcard set
+*/
+static NTSTATUS pvfs_rename_one(struct pvfs_state *pvfs,
+ struct ntvfs_request *req,
+ const char *dir_path,
+ const char *fname1,
+ const char *fname2,
+ uint16_t attrib)
+{
+ struct pvfs_filename *name1, *name2;
+ TALLOC_CTX *mem_ctx = talloc_new(req);
+ struct odb_lock *lck = NULL;
+ NTSTATUS status;
+
+ /* resolve the wildcard pattern for this name */
+ fname2 = pvfs_resolve_wildcard(mem_ctx, fname1, fname2);
+ if (fname2 == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* get a pvfs_filename source object */
+ status = pvfs_resolve_partial(pvfs, mem_ctx,
+ dir_path, fname1,
+ PVFS_RESOLVE_NO_OPENDB,
+ &name1);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
+ }
+
+ /* make sure its matches the given attributes */
+ status = pvfs_match_attrib(pvfs, name1, attrib, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
+ }
+
+ status = pvfs_can_rename(pvfs, req, name1, &lck);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(lck);
+ goto failed;
+ }
+
+ /* get a pvfs_filename dest object */
+ status = pvfs_resolve_partial(pvfs, mem_ctx,
+ dir_path, fname2,
+ PVFS_RESOLVE_NO_OPENDB,
+ &name2);
+ if (NT_STATUS_IS_OK(status)) {
+ status = pvfs_can_delete(pvfs, req, name2, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto failed;
+ }
+ }
+
+ status = NT_STATUS_OK;
+
+ fname2 = talloc_asprintf(mem_ctx, "%s/%s", dir_path, fname2);
+ if (fname2 == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = pvfs_do_rename(pvfs, lck, name1, fname2);
+
+failed:
+ talloc_free(mem_ctx);
+ return status;
+}
+
+
+/*
+ rename a set of files with wildcards
+*/
+static NTSTATUS pvfs_rename_wildcard(struct pvfs_state *pvfs,
+ struct ntvfs_request *req,
+ union smb_rename *ren,
+ struct pvfs_filename *name1,
+ struct pvfs_filename *name2)
+{
+ struct pvfs_dir *dir;
+ NTSTATUS status;
+ off_t ofs = 0;
+ const char *fname, *fname2, *dir_path;
+ uint16_t attrib = ren->rename.in.attrib;
+ int total_renamed = 0;
+
+ /* get list of matching files */
+ status = pvfs_list_start(pvfs, name1, req, &dir);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = NT_STATUS_NO_SUCH_FILE;
+
+ dir_path = pvfs_list_unix_path(dir);
+
+ /* only allow wildcard renames within a directory */
+ if (strncmp(dir_path, name2->full_name, strlen(dir_path)) != 0 ||
+ name2->full_name[strlen(dir_path)] != '/' ||
+ strchr(name2->full_name + strlen(dir_path) + 1, '/')) {
+ DEBUG(3,(__location__ ": Invalid rename for %s -> %s\n",
+ name1->original_name, name2->original_name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ fname2 = talloc_strdup(name2, name2->full_name + strlen(dir_path) + 1);
+ if (fname2 == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ while ((fname = pvfs_list_next(dir, &ofs))) {
+ status = pvfs_rename_one(pvfs, req,
+ dir_path,
+ fname, fname2, attrib);
+ if (NT_STATUS_IS_OK(status)) {
+ total_renamed++;
+ }
+ }
+
+ if (total_renamed == 0) {
+ return status;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*
+ rename a set of files - SMBmv interface
+*/
+static NTSTATUS pvfs_rename_mv(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req, union smb_rename *ren)
+{
+ struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+ struct pvfs_state);
+ NTSTATUS status;
+ struct pvfs_filename *name1, *name2;
+ struct odb_lock *lck = NULL;
+
+ /* resolve the cifs name to a posix name */
+ status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern1,
+ PVFS_RESOLVE_WILDCARD, &name1);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern2,
+ PVFS_RESOLVE_WILDCARD, &name2);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (name1->has_wildcard || name2->has_wildcard) {
+ return pvfs_rename_wildcard(pvfs, req, ren, name1, name2);
+ }
+
+ if (!name1->exists) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (strcmp(name1->full_name, name2->full_name) == 0) {
+ return NT_STATUS_OK;
+ }
+
+ if (name2->exists) {
+ return NT_STATUS_OBJECT_NAME_COLLISION;
+ }
+
+ status = pvfs_match_attrib(pvfs, name1, ren->rename.in.attrib, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_can_rename(pvfs, req, name1, &lck);
+ /*
+ * on a sharing violation we need to retry when the file is closed by
+ * the other user, or after 1 second
+ * on a non granted oplock we need to retry when the file is closed by
+ * the other user, or after 30 seconds
+ */
+ if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+ (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+ return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_do_rename(pvfs, lck, name1, name2->full_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ rename a stream
+*/
+static NTSTATUS pvfs_rename_stream(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req, union smb_rename *ren,
+ struct pvfs_filename *name1)
+{
+ struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+ struct pvfs_state);
+ NTSTATUS status;
+ struct odb_lock *lck = NULL;
+
+ if (name1->has_wildcard) {
+ DEBUG(3,(__location__ ": Invalid wildcard rename for %s\n",
+ name1->original_name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (ren->ntrename.in.new_name[0] != ':') {
+ DEBUG(3,(__location__ ": Invalid rename for %s\n",
+ ren->ntrename.in.new_name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!name1->exists) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (ren->ntrename.in.flags != RENAME_FLAG_RENAME) {
+ DEBUG(3,(__location__ ": Invalid rename flags 0x%x for %s\n",
+ ren->ntrename.in.flags, ren->ntrename.in.new_name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ status = pvfs_can_rename(pvfs, req, name1, &lck);
+ /*
+ * on a sharing violation we need to retry when the file is closed by
+ * the other user, or after 1 second
+ * on a non granted oplock we need to retry when the file is closed by
+ * the other user, or after 30 seconds
+ */
+ if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+ (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+ return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+ }
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_access_check_simple(pvfs, req, name1, SEC_FILE_WRITE_ATTRIBUTE);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ status = pvfs_stream_rename(pvfs, name1, -1,
+ ren->ntrename.in.new_name+1,
+ true);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ return NT_STATUS_OK;
+}
+
+/*
+ rename a set of files - ntrename interface
+*/
+static NTSTATUS pvfs_rename_nt(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req, union smb_rename *ren)
+{
+ struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+ struct pvfs_state);
+ NTSTATUS status;
+ struct pvfs_filename *name1, *name2;
+ struct odb_lock *lck = NULL;
+
+ switch (ren->ntrename.in.flags) {
+ case RENAME_FLAG_RENAME:
+ case RENAME_FLAG_HARD_LINK:
+ case RENAME_FLAG_COPY:
+ case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
+ break;
+ default:
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ /* resolve the cifs name to a posix name */
+ status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.old_name,
+ PVFS_RESOLVE_WILDCARD | PVFS_RESOLVE_STREAMS, &name1);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (name1->stream_name) {
+ /* stream renames need to be handled separately */
+ return pvfs_rename_stream(ntvfs, req, ren, name1);
+ }
+
+ status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.new_name,
+ PVFS_RESOLVE_WILDCARD, &name2);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (name1->has_wildcard || name2->has_wildcard) {
+ return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
+ }
+
+ if (!name1->exists) {
+ return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ if (strcmp(name1->full_name, name2->full_name) == 0) {
+ return NT_STATUS_OK;
+ }
+
+ if (name2->exists) {
+ return NT_STATUS_OBJECT_NAME_COLLISION;
+ }
+
+ status = pvfs_match_attrib(pvfs, name1, ren->ntrename.in.attrib, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = pvfs_can_rename(pvfs, req, name1, &lck);
+ /*
+ * on a sharing violation we need to retry when the file is closed by
+ * the other user, or after 1 second
+ * on a non granted oplock we need to retry when the file is closed by
+ * the other user, or after 30 seconds
+ */
+ if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+ (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+ return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+ }
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ switch (ren->ntrename.in.flags) {
+ case RENAME_FLAG_RENAME:
+ status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+ NT_STATUS_NOT_OK_RETURN(status);
+ status = pvfs_do_rename(pvfs, lck, name1, name2->full_name);
+ NT_STATUS_NOT_OK_RETURN(status);
+ break;
+
+ case RENAME_FLAG_HARD_LINK:
+ status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+ NT_STATUS_NOT_OK_RETURN(status);
+ if (link(name1->full_name, name2->full_name) == -1) {
+ return pvfs_map_errno(pvfs, errno);
+ }
+ break;
+
+ case RENAME_FLAG_COPY:
+ status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
+ NT_STATUS_NOT_OK_RETURN(status);
+ return pvfs_copy_file(pvfs, name1, name2, name1->allow_override && name2->allow_override);
+
+ case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
+ DEBUG(3,(__location__ ": Invalid rename cluster for %s\n",
+ name1->original_name));
+ return NT_STATUS_INVALID_PARAMETER;
+
+ default:
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+
+ return NT_STATUS_OK;
+}
+
+/*
+ rename a set of files - ntrename interface
+*/
+NTSTATUS pvfs_rename(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req, union smb_rename *ren)
+{
+ struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
+ struct pvfs_state);
+ struct pvfs_file *f;
+
+ switch (ren->generic.level) {
+ case RAW_RENAME_RENAME:
+ return pvfs_rename_mv(ntvfs, req, ren);
+
+ case RAW_RENAME_NTRENAME:
+ return pvfs_rename_nt(ntvfs, req, ren);
+
+ case RAW_RENAME_NTTRANS:
+ f = pvfs_find_fd(pvfs, req, ren->nttrans.in.file.ntvfs);
+ if (!f) {
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ /* wk23 ignores the request */
+ return NT_STATUS_OK;
+
+ default:
+ break;
+ }
+
+ return NT_STATUS_INVALID_LEVEL;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 13:00:37 +0000