2 * Drive autodetection code
4 * Copyright 2004 Mike Hearn
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <wine/debug.h>
25 #include <wine/library.h>
40 WINE_DEFAULT_DEBUG_CHANNEL(winecfg);
43 static long working_mask = 0;
47 static DEV_NODES sDeviceNodes[] = {
48 {"/dev/fd", DRIVE_REMOVABLE},
49 {"/dev/cdrom", DRIVE_CDROM},
53 static char *ignored_fstypes[] = {
64 static char *ignored_mnt_dirs[] = {
69 static int try_dev_node(char *dev)
71 const DEV_NODES *pDevNodes = sDeviceNodes;
73 while(pDevNodes->szNode[0])
75 if(!strncmp(dev,pDevNodes->szNode,strlen(pDevNodes->szNode)))
76 return pDevNodes->nType;
83 static BOOL should_ignore_fstype(char *type)
87 for (s = ignored_fstypes; *s; s++)
88 if (!strcmp(*s, type)) return TRUE;
93 static BOOL should_ignore_mnt_dir(char *dir)
97 for (s = ignored_mnt_dirs; *s; s++)
98 if (!strcmp(*s, dir)) return TRUE;
103 static BOOL is_drive_defined(char *path)
107 for (i = 0; i < 26; i++)
108 if (drives[i].in_use && !strcmp(drives[i].unixpath, path)) return TRUE;
113 /* returns Z + 1 if there are no more available letters */
114 static char allocate_letter()
118 for (letter = 'C'; letter <= 'Z'; letter++)
119 if ((DRIVE_MASK_BIT(letter) & working_mask) != 0) break;
126 #define NO_MORE_LETTERS 2
131 static void report_error(int code)
141 static const char *s = "Could not open your mountpoint description table.\n\nOpening of /etc/fstab failed: %s";
142 len = snprintf(NULL, 0, s, strerror(errno));
143 buffer = HeapAlloc(GetProcessHeap(), 0, len + 1);
144 snprintf(buffer, len, s, strerror(errno));
145 MessageBox(NULL, s, "", MB_OK | MB_ICONEXCLAMATION);
146 HeapFree(GetProcessHeap(), 0, buffer);
150 fprintf(stderr, "winecfg: could not open fstab: %s\n", strerror(errno));
154 case NO_MORE_LETTERS:
155 if (gui_mode) MessageBox(NULL, "No more letters are available to auto-detect available drives with.", "", MB_OK | MB_ICONEXCLAMATION);
156 fprintf(stderr, "winecfg: no more available letters while scanning /etc/fstab\n");
160 if (gui_mode) MessageBox(NULL, "Could not ensure that the root directory was mapped.\n\n"
161 "This can happen if you run out of drive letters. "
162 "It's important to have the root directory mapped, otherwise Wine"
163 "will not be able to always find the programs you want to run. "
164 "Try unmapping a drive letter then trying again.", "",
165 MB_OK | MB_ICONEXCLAMATION);
166 else fprintf(stderr, "winecfg: unable to map root drive\n");
171 MessageBox(NULL, "No virtual drive C mapped\n\nTry running wineprefixcreate", "", MB_OK | MB_ICONEXCLAMATION);
173 fprintf(stderr, "winecfg: no drive_c directory\n");
177 MessageBox(NULL, "Could not ensure that your home directory was mapped.\n\n"
178 "This can happen if you run out of drive letters. "
179 "Try unmapping a drive letter then try again.", "",
180 MB_OK | MB_ICONEXCLAMATION);
182 fprintf(stderr, "winecfg: unable to map home drive\n");
187 static void ensure_root_is_mapped()
192 for (i = 0; i < 26; i++)
193 if (drives[i].in_use && !strcmp(drives[i].unixpath, "/")) mapped = TRUE;
197 /* work backwards from Z, trying to map it */
200 for (letter = 'Z'; letter >= 'A'; letter--)
202 if (!drives[letter - 'A'].in_use)
204 add_drive(letter, "/", "System", "0", DRIVE_FIXED);
205 WINE_TRACE("allocated drive %c as the root drive\n", letter);
210 if (letter == ('A' - 1)) report_error(NO_ROOT);
214 static void ensure_home_is_mapped()
218 char *home = getenv("HOME");
222 for (i = 0; i < 26; i++)
223 if (drives[i].in_use && !strcmp(drives[i].unixpath, home)) mapped = TRUE;
229 for (letter = 'H'; letter <= 'Z'; letter++)
231 if (!drives[letter - 'A'].in_use)
233 add_drive(letter, home, "Home", "0", DRIVE_FIXED);
234 WINE_TRACE("allocated drive %c as the user's home directory\n", letter);
238 if (letter == ('Z' + 1)) report_error(NO_HOME);
242 static void ensure_drive_c_is_mapped()
245 const char *configdir = wine_get_config_dir();
249 if (drives[2].in_use) return;
251 len = snprintf(NULL, 0, "%s/../drive_c", configdir);
252 drive_c_dir = HeapAlloc(GetProcessHeap(), 0, len);
253 snprintf(drive_c_dir, len, "%s/../drive_c", configdir);
254 HeapFree(GetProcessHeap(), 0, drive_c_dir);
256 if (stat(drive_c_dir, &buf) == 0)
258 add_drive('C', "../drive_c", "Virtual Windows Drive", "0", DRIVE_FIXED);
262 report_error(NO_DRIVE_C);
266 int autodetect_drives()
273 /* we want to build a list of autodetected drives, then ensure each entry
274 exists in the users setup. so, we superimpose the autodetected drives
275 onto whatever is pre-existing.
277 for now let's just rummage around inside the fstab.
282 working_mask = drive_available_mask('\0');
285 fstab = fopen("/etc/fstab", "r");
288 report_error(FSTAB_OPEN);
292 while ((ent = getmntent(fstab)))
298 WINE_TRACE("ent->mnt_dir=%s\n", ent->mnt_dir);
300 if (should_ignore_fstype(ent->mnt_type)) continue;
301 if (should_ignore_mnt_dir(ent->mnt_dir)) continue;
302 if (is_drive_defined(ent->mnt_dir)) continue;
304 /* allocate a drive for it */
305 letter = allocate_letter();
308 report_error(NO_MORE_LETTERS);
313 strncpy(label, "Drive X", 8);
316 WINE_TRACE("adding drive %c for %s, type %s with label %s\n", letter, ent->mnt_dir, ent->mnt_type,label);
318 if (!strcmp(ent->mnt_type, "nfs")) type = DRIVE_REMOTE;
319 else if (!strcmp(ent->mnt_type, "nfs4")) type = DRIVE_REMOTE;
320 else if (!strcmp(ent->mnt_type, "smbfs")) type = DRIVE_REMOTE;
321 else if (!strcmp(ent->mnt_type, "cifs")) type = DRIVE_REMOTE;
322 else if (!strcmp(ent->mnt_type, "coda")) type = DRIVE_REMOTE;
323 else if (!strcmp(ent->mnt_type, "iso9660")) type = DRIVE_CDROM;
324 else if (!strcmp(ent->mnt_type, "ramfs")) type = DRIVE_RAMDISK;
325 else type = try_dev_node(ent->mnt_fsname);
327 add_drive(letter, ent->mnt_dir, label, "0", type);
329 /* working_mask is a map of the drive letters still available. */
330 working_mask &= ~DRIVE_MASK_BIT(letter);
336 ensure_root_is_mapped();
338 ensure_drive_c_is_mapped();
340 ensure_home_is_mapped();