2 Unix SMB/CIFS implementation.
3 Filename utility functions.
4 Copyright (C) Tim Prouty 2009
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 * XXX: This is temporary and there should be no callers of this outside of
23 * this file once smb_filename is plumbed through all path based operations.
24 * The one legitimate caller currently is smb_fname_str_dbg(), which this
25 * could be made static for.
27 NTSTATUS get_full_smb_filename(TALLOC_CTX *ctx,
28 const struct smb_filename *smb_fname,
31 if (smb_fname->stream_name) {
32 /* stream_name must always be NULL if there is no stream. */
33 SMB_ASSERT(smb_fname->stream_name[0] != '\0');
35 *full_name = talloc_asprintf(ctx, "%s%s", smb_fname->base_name,
36 smb_fname->stream_name);
38 *full_name = talloc_strdup(ctx, smb_fname->base_name);
42 return NT_STATUS_NO_MEMORY;
49 * There are actually legitimate callers of this such as functions that
50 * enumerate streams using the vfs_streaminfo interface and then want to
51 * operate on each stream.
53 NTSTATUS create_synthetic_smb_fname(TALLOC_CTX *ctx, const char *base_name,
54 const char *stream_name,
55 const SMB_STRUCT_STAT *psbuf,
56 struct smb_filename **smb_fname_out)
58 *smb_fname_out = synthetic_smb_fname(ctx, base_name, stream_name,
60 if (*smb_fname_out == NULL) {
61 return NT_STATUS_NO_MEMORY;
66 struct smb_filename *synthetic_smb_fname(TALLOC_CTX *mem_ctx,
67 const char *base_name,
68 const char *stream_name,
69 const SMB_STRUCT_STAT *psbuf)
71 struct smb_filename smb_fname_loc = { 0, };
73 /* Setup the base_name/stream_name. */
74 smb_fname_loc.base_name = discard_const_p(char, base_name);
75 smb_fname_loc.stream_name = discard_const_p(char, stream_name);
77 /* Copy the psbuf if one was given. */
79 smb_fname_loc.st = *psbuf;
81 /* Let cp_smb_filename() do the heavy lifting. */
82 return cp_smb_filename(mem_ctx, &smb_fname_loc);
86 * XXX: This is temporary and there should be no callers of this once
87 * smb_filename is plumbed through all path based operations.
89 NTSTATUS create_synthetic_smb_fname_split(TALLOC_CTX *ctx,
91 const SMB_STRUCT_STAT *psbuf,
92 struct smb_filename **smb_fname_out)
94 *smb_fname_out = synthetic_smb_fname_split(ctx, fname, psbuf);
95 if (*smb_fname_out == NULL) {
96 return NT_STATUS_NO_MEMORY;
101 struct smb_filename *synthetic_smb_fname_split(TALLOC_CTX *ctx,
103 const SMB_STRUCT_STAT *psbuf)
105 const char *stream_name = NULL;
106 char *base_name = NULL;
107 struct smb_filename *ret;
109 if (!lp_posix_pathnames()) {
110 stream_name = strchr_m(fname, ':');
113 /* Setup the base_name/stream_name. */
115 base_name = talloc_strndup(ctx, fname,
116 PTR_DIFF(stream_name, fname));
118 base_name = talloc_strdup(ctx, fname);
125 ret = synthetic_smb_fname(ctx, base_name, stream_name, psbuf);
126 TALLOC_FREE(base_name);
131 * Return a string using the talloc_tos()
133 const char *smb_fname_str_dbg(const struct smb_filename *smb_fname)
138 if (smb_fname == NULL) {
141 status = get_full_smb_filename(talloc_tos(), smb_fname, &fname);
142 if (!NT_STATUS_IS_OK(status)) {
149 * Return a debug string of the path name of an fsp using the talloc_tos().
151 const char *fsp_str_dbg(const struct files_struct *fsp)
153 return smb_fname_str_dbg(fsp->fsp_name);
157 * Create a debug string for the fnum of an fsp.
159 * This is allocated to talloc_tos() or a string constant
160 * in certain corner cases. The returned string should
161 * hence not be free'd directly but only via the talloc stack.
163 const char *fsp_fnum_dbg(const struct files_struct *fsp)
168 return "fnum [fsp is NULL]";
171 if (fsp->fnum == FNUM_FIELD_INVALID) {
172 return "fnum [invalid value]";
175 str = talloc_asprintf(talloc_tos(), "fnum %llu",
176 (unsigned long long)fsp->fnum);
178 DEBUG(1, ("%s: talloc_asprintf failed\n", __FUNCTION__));
179 return "fnum [talloc failed!]";
185 struct smb_filename *cp_smb_filename(TALLOC_CTX *mem_ctx,
186 const struct smb_filename *in)
188 struct smb_filename *out;
190 /* stream_name must always be NULL if there is no stream. */
191 if (in->stream_name) {
192 SMB_ASSERT(in->stream_name[0] != '\0');
195 out = talloc_zero(mem_ctx, struct smb_filename);
199 if (in->base_name != NULL) {
200 out->base_name = talloc_strdup(out, in->base_name);
201 if (out->base_name == NULL) {
205 if (in->stream_name != NULL) {
206 out->stream_name = talloc_strdup(out, in->stream_name);
207 if (out->stream_name == NULL) {
211 if (in->original_lcomp != NULL) {
212 out->original_lcomp = talloc_strdup(out, in->original_lcomp);
213 if (out->original_lcomp == NULL) {
224 /****************************************************************************
225 Simple check to determine if the filename is a stream.
226 ***************************************************************************/
227 bool is_ntfs_stream_smb_fname(const struct smb_filename *smb_fname)
229 /* stream_name must always be NULL if there is no stream. */
230 if (smb_fname->stream_name) {
231 SMB_ASSERT(smb_fname->stream_name[0] != '\0');
234 if (lp_posix_pathnames()) {
238 return smb_fname->stream_name != NULL;
241 /****************************************************************************
242 Returns true if the filename's stream == "::$DATA"
243 ***************************************************************************/
244 bool is_ntfs_default_stream_smb_fname(const struct smb_filename *smb_fname)
246 if (!is_ntfs_stream_smb_fname(smb_fname)) {
250 return strcasecmp_m(smb_fname->stream_name, "::$DATA") == 0;