r23432: Remove superfluous comment.
[Samba/bb.git] / source3 / smbd / fake_file.c
blob5333742ba81c92414f5295ae909c4565ffa5e3d6
1 /*
2 Unix SMB/CIFS implementation.
3 FAKE FILE suppport, for faking up special files windows want access to
4 Copyright (C) Stefan (metze) Metzmacher 2003
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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "includes.h"
23 extern struct current_user current_user;
25 static FAKE_FILE fake_files[] = {
26 #ifdef WITH_QUOTAS
27 {FAKE_FILE_NAME_QUOTA_UNIX, FAKE_FILE_TYPE_QUOTA, init_quota_handle, destroy_quota_handle},
28 #endif /* WITH_QUOTAS */
29 {NULL, FAKE_FILE_TYPE_NONE, NULL, NULL }
32 /****************************************************************************
33 Create a fake file handle
34 ****************************************************************************/
36 static struct _FAKE_FILE_HANDLE *init_fake_file_handle(enum FAKE_FILE_TYPE type)
38 TALLOC_CTX *mem_ctx = NULL;
39 FAKE_FILE_HANDLE *fh = NULL;
40 int i;
42 for (i=0;fake_files[i].name!=NULL;i++) {
43 if (fake_files[i].type==type) {
44 DEBUG(5,("init_fake_file_handle: for [%s]\n",fake_files[i].name));
46 if ((mem_ctx=talloc_init("fake_file_handle"))==NULL) {
47 DEBUG(0,("talloc_init(fake_file_handle) failed.\n"));
48 return NULL;
51 if ((fh =TALLOC_ZERO_P(mem_ctx, FAKE_FILE_HANDLE))==NULL) {
52 DEBUG(0,("TALLOC_ZERO() failed.\n"));
53 talloc_destroy(mem_ctx);
54 return NULL;
57 fh->type = type;
58 fh->mem_ctx = mem_ctx;
60 if (fake_files[i].init_pd) {
61 fh->pd = fake_files[i].init_pd(fh->mem_ctx);
64 fh->free_pd = fake_files[i].free_pd;
66 return fh;
70 return NULL;
73 /****************************************************************************
74 Does this name match a fake filename ?
75 ****************************************************************************/
77 enum FAKE_FILE_TYPE is_fake_file(const char *fname)
79 #ifdef HAVE_SYS_QUOTAS
80 int i;
81 #endif
83 if (!fname) {
84 return FAKE_FILE_TYPE_NONE;
87 #ifdef HAVE_SYS_QUOTAS
88 for (i=0;fake_files[i].name!=NULL;i++) {
89 if (strncmp(fname,fake_files[i].name,strlen(fake_files[i].name))==0) {
90 DEBUG(5,("is_fake_file: [%s] is a fake file\n",fname));
91 return fake_files[i].type;
94 #endif
96 return FAKE_FILE_TYPE_NONE;
100 /****************************************************************************
101 Open a fake quota file with a share mode.
102 ****************************************************************************/
104 NTSTATUS open_fake_file(connection_struct *conn,
105 enum FAKE_FILE_TYPE fake_file_type,
106 const char *fname,
107 uint32 access_mask,
108 files_struct **result)
110 files_struct *fsp = NULL;
111 NTSTATUS status;
113 /* access check */
114 if (current_user.ut.uid != 0) {
115 DEBUG(1,("open_fake_file_shared: access_denied to service[%s] file[%s] user[%s]\n",
116 lp_servicename(SNUM(conn)),fname,conn->user));
117 return NT_STATUS_ACCESS_DENIED;
121 status = file_new(conn, &fsp);
122 if(!NT_STATUS_IS_OK(status)) {
123 return status;
126 DEBUG(5,("open_fake_file_shared: fname = %s, FID = %d, access_mask = 0x%x\n",
127 fname, fsp->fnum, (unsigned int)access_mask));
129 fsp->conn = conn;
130 fsp->fh->fd = -1;
131 fsp->vuid = current_user.vuid;
132 fsp->fh->pos = -1;
133 fsp->can_lock = False; /* Should this be true ? - No, JRA */
134 fsp->access_mask = access_mask;
135 string_set(&fsp->fsp_name,fname);
137 fsp->fake_file_handle = init_fake_file_handle(fake_file_type);
139 if (fsp->fake_file_handle==NULL) {
140 file_free(fsp);
141 return NT_STATUS_NO_MEMORY;
144 conn->num_files_open++;
145 *result = fsp;
146 return NT_STATUS_OK;
149 void destroy_fake_file_handle(FAKE_FILE_HANDLE **fh)
151 if (!fh||!(*fh)) {
152 return;
155 if ((*fh)->free_pd) {
156 (*fh)->free_pd(&(*fh)->pd);
159 talloc_destroy((*fh)->mem_ctx);
160 (*fh) = NULL;
163 NTSTATUS close_fake_file(files_struct *fsp)
165 file_free(fsp);
166 return NT_STATUS_OK;