3 * scan.c scan a directory (on a removable file) for a valid
4 * Volume name. If found, open the file for append.
11 Bacula® - The Network Backup Solution
13 Copyright (C) 2006-2006 Free Software Foundation Europe e.V.
15 The main author of Bacula is Kern Sibbald, with contributions from
16 many others, a complete list can be found in the file AUTHORS.
17 This program is Free Software; you can redistribute it and/or
18 modify it under the terms of version two of the GNU General Public
19 License as published by the Free Software Foundation plus additions
20 that are listed in the file LICENSE.
22 This program is distributed in the hope that it will be useful, but
23 WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
32 Bacula® is a registered trademark of John Walker.
33 The licensor of Bacula is the Free Software Foundation Europe
34 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
35 Switzerland, email:ftf@fsfeurope.org.
41 /* Forward referenced functions */
42 static bool is_volume_name_legal(char *name);
45 bool DEVICE::scan_dir_for_volume(DCR *dcr)
48 struct dirent *entry, *result;
51 VOLUME_CAT_INFO dcrVolCatInfo, devVolCatInfo;
52 char VolumeName[MAX_NAME_LENGTH];
55 POOL_MEM fname(PM_FNAME);
56 bool need_slash = false;
59 dcrVolCatInfo = dcr->VolCatInfo; /* structure assignment */
60 devVolCatInfo = VolCatInfo; /* structure assignment */
61 bstrncpy(VolumeName, dcr->VolumeName, sizeof(VolumeName));
63 name_max = pathconf(".", _PC_NAME_MAX);
64 if (name_max < 1024) {
68 if (device->mount_point) {
69 mount_point = device->mount_point;
71 mount_point = device->device_name;
74 if (!(dp = opendir(mount_point))) {
77 Dmsg3(29, "scan_dir_for_vol: failed to open dir %s (dev=%s), ERR=%s\n",
78 mount_point, print_name(), be.bstrerror());
82 len = strlen(mount_point);
84 need_slash = !IsPathSeparator(mount_point[len - 1]);
86 entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
88 if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
90 Dmsg2(129, "scan_dir_for_vol: failed to find suitable file in dir %s (dev=%s)\n",
91 mount_point, print_name());
94 if (strcmp(result->d_name, ".") == 0 ||
95 strcmp(result->d_name, "..") == 0) {
99 if (!is_volume_name_legal(result->d_name)) {
102 pm_strcpy(fname, mount_point);
104 pm_strcat(fname, "/");
106 pm_strcat(fname, result->d_name);
107 if (lstat(fname.c_str(), &statp) != 0 ||
108 !S_ISREG(statp.st_mode)) {
109 continue; /* ignore directories & special files */
113 * OK, we got a different volume mounted. First save the
114 * requested Volume info (dcr) structure, then query if
115 * this volume is really OK. If not, put back the desired
116 * volume name, mark it not in changer and continue.
118 /* Check if this is a valid Volume in the pool */
119 bstrncpy(dcr->VolumeName, result->d_name, sizeof(dcr->VolumeName));
120 if (!dir_get_volume_info(dcr, GET_VOL_INFO_FOR_WRITE)) {
123 /* This was not the volume we expected, but it is OK with
124 * the Director, so use it.
126 VolCatInfo = dcr->VolCatInfo; /* structure assignment */
128 break; /* got a Volume */
135 /* Restore VolumeName we really wanted */
136 bstrncpy(dcr->VolumeName, VolumeName, sizeof(dcr->VolumeName));
137 dcr->VolCatInfo = dcrVolCatInfo; /* structure assignment */
138 VolCatInfo = devVolCatInfo; /* structure assignment */
140 sm_check(__FILE__, __LINE__, false);
145 * Check if the Volume name has legal characters
146 * If ua is non-NULL send the message
148 static bool is_volume_name_legal(char *name)
152 const char *accept = ":.-_";
154 /* Restrict the characters permitted in the Volume name */
155 for (p=name; *p; p++) {
156 if (B_ISALPHA(*p) || B_ISDIGIT(*p) || strchr(accept, (int)(*p))) {
162 if (len >= MAX_NAME_LENGTH) {