mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
89efea81d9
The problem was twofold:
1) irix returns 64 bit numbers in telldir(). The protocol uses a 32
bit resume key. We now cope with this properly using the code in
pvfs_list_seek_ofs().
2) irix returns 0xFFFFFFFF from telldir() for the last entry in the
directory. When added to DIR_OFFSET_BASE this became
DIR_OFFSET_DOTDOT which meant an infinite loop!
(This used to be commit 8cce9740ed
)
479 lines
11 KiB
C
479 lines
11 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - rename
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Copyright (C) Andrew Tridgell 2004
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "vfs_posix.h"
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#include "librpc/gen_ndr/security.h"
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/*
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do a file rename, and send any notify triggers
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*/
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NTSTATUS pvfs_do_rename(struct pvfs_state *pvfs, const struct pvfs_filename *name1,
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const char *name2)
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{
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const char *r1, *r2;
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uint32_t mask;
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if (rename(name1->full_name, name2) == -1) {
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return pvfs_map_errno(pvfs, errno);
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}
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if (name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
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mask = FILE_NOTIFY_CHANGE_DIR_NAME;
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} else {
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mask = FILE_NOTIFY_CHANGE_FILE_NAME;
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}
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/*
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renames to the same directory cause a OLD_NAME->NEW_NAME notify.
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renames to a different directory are considered a remove/add
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*/
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r1 = strrchr_m(name1->full_name, '/');
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r2 = strrchr_m(name2, '/');
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if ((r1-name1->full_name) != (r2-name2) ||
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strncmp(name1->full_name, name2, r1-name1->full_name) != 0) {
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notify_trigger(pvfs->notify_context,
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NOTIFY_ACTION_REMOVED,
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mask,
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name1->full_name);
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notify_trigger(pvfs->notify_context,
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NOTIFY_ACTION_ADDED,
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mask,
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name2);
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} else {
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notify_trigger(pvfs->notify_context,
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NOTIFY_ACTION_OLD_NAME,
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mask,
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name1->full_name);
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notify_trigger(pvfs->notify_context,
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NOTIFY_ACTION_NEW_NAME,
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mask,
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name2);
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}
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/* this is a strange one. w2k3 gives an additional event for CHANGE_ATTRIBUTES
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and CHANGE_CREATION on the new file when renming files, but not
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directories */
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if ((name1->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) == 0) {
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notify_trigger(pvfs->notify_context,
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NOTIFY_ACTION_MODIFIED,
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FILE_NOTIFY_CHANGE_ATTRIBUTES|FILE_NOTIFY_CHANGE_CREATION,
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name2);
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}
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return NT_STATUS_OK;
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}
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/*
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resolve a wildcard rename pattern. This works on one component of the name
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*/
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static const char *pvfs_resolve_wildcard_component(TALLOC_CTX *mem_ctx,
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const char *fname,
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const char *pattern)
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{
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const char *p1, *p2;
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char *dest, *d;
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/* the length is bounded by the length of the two strings combined */
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dest = talloc_size(mem_ctx, strlen(fname) + strlen(pattern) + 1);
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if (dest == NULL) {
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return NULL;
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}
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p1 = fname;
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p2 = pattern;
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d = dest;
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while (*p2) {
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codepoint_t c1, c2;
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size_t c_size1, c_size2;
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c1 = next_codepoint(p1, &c_size1);
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c2 = next_codepoint(p2, &c_size2);
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if (c2 == '?') {
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d += push_codepoint(d, c1);
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} else if (c2 == '*') {
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memcpy(d, p1, strlen(p1));
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d += strlen(p1);
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break;
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} else {
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d += push_codepoint(d, c2);
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}
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p1 += c_size1;
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p2 += c_size2;
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}
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*d = 0;
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return dest;
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}
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/*
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resolve a wildcard rename pattern.
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*/
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static const char *pvfs_resolve_wildcard(TALLOC_CTX *mem_ctx,
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const char *fname,
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const char *pattern)
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{
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const char *base1, *base2;
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const char *ext1, *ext2;
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char *p;
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/* break into base part plus extension */
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p = strrchr_m(fname, '.');
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if (p == NULL) {
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ext1 = "";
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base1 = fname;
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} else {
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ext1 = talloc_strdup(mem_ctx, p+1);
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base1 = talloc_strndup(mem_ctx, fname, p-fname);
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}
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if (ext1 == NULL || base1 == NULL) {
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return NULL;
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}
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p = strrchr_m(pattern, '.');
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if (p == NULL) {
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ext2 = "";
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base2 = fname;
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} else {
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ext2 = talloc_strdup(mem_ctx, p+1);
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base2 = talloc_strndup(mem_ctx, pattern, p-pattern);
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}
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if (ext2 == NULL || base2 == NULL) {
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return NULL;
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}
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base1 = pvfs_resolve_wildcard_component(mem_ctx, base1, base2);
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ext1 = pvfs_resolve_wildcard_component(mem_ctx, ext1, ext2);
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if (base1 == NULL || ext1 == NULL) {
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return NULL;
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}
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if (*ext1 == 0) {
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return base1;
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}
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return talloc_asprintf(mem_ctx, "%s.%s", base1, ext1);
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}
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/*
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rename one file from a wildcard set
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*/
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static NTSTATUS pvfs_rename_one(struct pvfs_state *pvfs,
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struct ntvfs_request *req,
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const char *dir_path,
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const char *fname1,
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const char *fname2,
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uint16_t attrib)
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{
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struct pvfs_filename *name1, *name2;
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TALLOC_CTX *mem_ctx = talloc_new(req);
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NTSTATUS status;
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struct odb_lock *lck, *lck2;
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/* resolve the wildcard pattern for this name */
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fname2 = pvfs_resolve_wildcard(mem_ctx, fname1, fname2);
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if (fname2 == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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/* get a pvfs_filename source object */
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status = pvfs_resolve_partial(pvfs, mem_ctx,
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dir_path, fname1, &name1);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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/* make sure its matches the given attributes */
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status = pvfs_match_attrib(pvfs, name1, attrib, 0);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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status = pvfs_can_rename(pvfs, req, name1, &lck);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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/* get a pvfs_filename dest object */
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status = pvfs_resolve_partial(pvfs, mem_ctx,
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dir_path, fname2, &name2);
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if (NT_STATUS_IS_OK(status)) {
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status = pvfs_can_delete(pvfs, req, name2, &lck2);
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if (!NT_STATUS_IS_OK(status)) {
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goto failed;
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}
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}
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status = NT_STATUS_OK;
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fname2 = talloc_asprintf(mem_ctx, "%s/%s", dir_path, fname2);
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if (fname2 == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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status = pvfs_do_rename(pvfs, name1, fname2);
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if (NT_STATUS_IS_OK(status)) {
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status = odb_rename(lck, fname2);
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}
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failed:
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talloc_free(mem_ctx);
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return status;
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}
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/*
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rename a set of files with wildcards
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*/
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static NTSTATUS pvfs_rename_wildcard(struct pvfs_state *pvfs,
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struct ntvfs_request *req,
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union smb_rename *ren,
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struct pvfs_filename *name1,
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struct pvfs_filename *name2)
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{
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struct pvfs_dir *dir;
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NTSTATUS status;
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off_t ofs = 0;
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const char *fname, *fname2, *dir_path;
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uint16_t attrib = ren->rename.in.attrib;
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int total_renamed = 0;
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/* get list of matching files */
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status = pvfs_list_start(pvfs, name1, req, &dir);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = NT_STATUS_NO_SUCH_FILE;
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dir_path = pvfs_list_unix_path(dir);
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/* only allow wildcard renames within a directory */
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if (strncmp(dir_path, name2->full_name, strlen(dir_path)) != 0 ||
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name2->full_name[strlen(dir_path)] != '/' ||
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strchr(name2->full_name + strlen(dir_path) + 1, '/')) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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fname2 = talloc_strdup(name2, name2->full_name + strlen(dir_path) + 1);
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if (fname2 == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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while ((fname = pvfs_list_next(dir, &ofs))) {
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status = pvfs_rename_one(pvfs, req,
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dir_path,
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fname, fname2, attrib);
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if (NT_STATUS_IS_OK(status)) {
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total_renamed++;
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}
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}
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if (total_renamed == 0) {
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return status;
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}
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return NT_STATUS_OK;
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}
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/*
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rename a set of files - SMBmv interface
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*/
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static NTSTATUS pvfs_rename_mv(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req, union smb_rename *ren)
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{
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struct pvfs_state *pvfs = ntvfs->private_data;
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NTSTATUS status;
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struct pvfs_filename *name1, *name2;
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struct odb_lock *lck;
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/* resolve the cifs name to a posix name */
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status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern1,
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PVFS_RESOLVE_WILDCARD, &name1);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_resolve_name(pvfs, req, ren->rename.in.pattern2,
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PVFS_RESOLVE_WILDCARD, &name2);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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if (name1->has_wildcard || name2->has_wildcard) {
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return pvfs_rename_wildcard(pvfs, req, ren, name1, name2);
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}
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if (!name1->exists) {
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return NT_STATUS_OBJECT_NAME_NOT_FOUND;
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}
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if (strcmp(name1->full_name, name2->full_name) == 0) {
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return NT_STATUS_OK;
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}
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if (name2->exists) {
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return NT_STATUS_OBJECT_NAME_COLLISION;
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}
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status = pvfs_match_attrib(pvfs, name1, ren->rename.in.attrib, 0);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_can_rename(pvfs, req, name1, &lck);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_do_rename(pvfs, name1, name2->full_name);
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if (NT_STATUS_IS_OK(status)) {
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status = odb_rename(lck, name2->full_name);
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}
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return NT_STATUS_OK;
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}
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/*
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rename a set of files - ntrename interface
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*/
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static NTSTATUS pvfs_rename_nt(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req, union smb_rename *ren)
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{
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struct pvfs_state *pvfs = ntvfs->private_data;
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NTSTATUS status;
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struct pvfs_filename *name1, *name2;
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struct odb_lock *lck;
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switch (ren->ntrename.in.flags) {
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case RENAME_FLAG_RENAME:
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case RENAME_FLAG_HARD_LINK:
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case RENAME_FLAG_COPY:
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case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
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break;
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default:
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return NT_STATUS_ACCESS_DENIED;
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}
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/* resolve the cifs name to a posix name */
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status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.old_name,
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PVFS_RESOLVE_WILDCARD, &name1);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_resolve_name(pvfs, req, ren->ntrename.in.new_name,
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PVFS_RESOLVE_WILDCARD, &name2);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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if (name1->has_wildcard || name2->has_wildcard) {
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return NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
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}
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if (!name1->exists) {
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return NT_STATUS_OBJECT_NAME_NOT_FOUND;
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}
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if (strcmp(name1->full_name, name2->full_name) == 0) {
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return NT_STATUS_OK;
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}
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if (name2->exists) {
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return NT_STATUS_OBJECT_NAME_COLLISION;
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}
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status = pvfs_match_attrib(pvfs, name1, ren->ntrename.in.attrib, 0);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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status = pvfs_can_rename(pvfs, req, name1, &lck);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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switch (ren->ntrename.in.flags) {
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case RENAME_FLAG_RENAME:
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status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
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NT_STATUS_NOT_OK_RETURN(status);
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status = pvfs_do_rename(pvfs, name1, name2->full_name);
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NT_STATUS_NOT_OK_RETURN(status);
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break;
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case RENAME_FLAG_HARD_LINK:
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status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
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NT_STATUS_NOT_OK_RETURN(status);
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if (link(name1->full_name, name2->full_name) == -1) {
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return pvfs_map_errno(pvfs, errno);
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}
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break;
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case RENAME_FLAG_COPY:
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status = pvfs_access_check_parent(pvfs, req, name2, SEC_DIR_ADD_FILE);
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NT_STATUS_NOT_OK_RETURN(status);
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return pvfs_copy_file(pvfs, name1, name2);
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case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
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return NT_STATUS_INVALID_PARAMETER;
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default:
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return NT_STATUS_ACCESS_DENIED;
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}
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return NT_STATUS_OK;
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}
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/*
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rename a set of files - ntrename interface
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*/
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NTSTATUS pvfs_rename(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req, union smb_rename *ren)
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{
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switch (ren->generic.level) {
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case RAW_RENAME_RENAME:
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return pvfs_rename_mv(ntvfs, req, ren);
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case RAW_RENAME_NTRENAME:
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return pvfs_rename_nt(ntvfs, req, ren);
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default:
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break;
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}
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return NT_STATUS_INVALID_LEVEL;
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}
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