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;
46 static char *ignored_fstypes[] = {
57 static char *ignored_mnt_dirs[] = {
62 static BOOL should_ignore_fstype(char *type)
66 for (s = ignored_fstypes; *s; s++)
67 if (!strcmp(*s, type)) return TRUE;
72 static BOOL should_ignore_mnt_dir(char *dir)
76 for (s = ignored_mnt_dirs; *s; s++)
77 if (!strcmp(*s, dir)) return TRUE;
82 static BOOL is_drive_defined(char *path)
86 for (i = 0; i < 26; i++)
87 if (drives[i].in_use && !strcmp(drives[i].unixpath, path)) return TRUE;
92 /* returns Z + 1 if there are no more available letters */
93 static char allocate_letter()
97 for (letter = 'C'; letter <= 'Z'; letter++)
98 if ((DRIVE_MASK_BIT(letter) & working_mask) != 0) break;
105 #define NO_MORE_LETTERS 2
110 static void report_error(int code)
120 static const char *s = "Could not open your mountpoint description table.\n\nOpening of /etc/fstab failed: %s";
121 len = snprintf(NULL, 0, s, strerror(errno));
122 buffer = HeapAlloc(GetProcessHeap(), 0, len + 1);
123 snprintf(buffer, len, s, strerror(errno));
124 MessageBox(NULL, s, "", MB_OK | MB_ICONEXCLAMATION);
125 HeapFree(GetProcessHeap(), 0, buffer);
129 fprintf(stderr, "winecfg: could not open fstab: %s\n", strerror(errno));
133 case NO_MORE_LETTERS:
134 if (gui_mode) MessageBox(NULL, "No more letters are available to auto-detect available drives with.", "", MB_OK | MB_ICONEXCLAMATION);
135 fprintf(stderr, "winecfg: no more available letters while scanning /etc/fstab\n");
139 if (gui_mode) MessageBox(NULL, "Could not ensure that the root directory was mapped.\n\n"
140 "This can happen if you run out of drive letters. "
141 "It's important to have the root directory mapped, otherwise Wine"
142 "will not be able to always find the programs you want to run. "
143 "Try unmapping a drive letter then trying again.", "",
144 MB_OK | MB_ICONEXCLAMATION);
145 else fprintf(stderr, "winecfg: unable to map root drive\n");
150 MessageBox(NULL, "No virtual drive C mapped\n\nTry running wineprefixcreate", "", MB_OK | MB_ICONEXCLAMATION);
152 fprintf(stderr, "winecfg: no drive_c directory\n");
156 MessageBox(NULL, "Could not ensure that your home directory was mapped.\n\n"
157 "This can happen if you run out of drive letters. "
158 "Try unmapping a drive letter then try again.", "",
159 MB_OK | MB_ICONEXCLAMATION);
161 fprintf(stderr, "winecfg: unable to map home drive\n");
166 static void ensure_root_is_mapped()
171 for (i = 0; i < 26; i++)
172 if (drives[i].in_use && !strcmp(drives[i].unixpath, "/")) mapped = TRUE;
176 /* work backwards from Z, trying to map it */
179 for (letter = 'Z'; letter >= 'A'; letter--)
181 if (!drives[letter - 'A'].in_use)
183 add_drive(letter, "/", "System", "0", DRIVE_FIXED);
184 WINE_TRACE("allocated drive %c as the root drive\n", letter);
189 if (letter == ('A' - 1)) report_error(NO_ROOT);
193 static void ensure_home_is_mapped()
197 char *home = getenv("HOME");
201 for (i = 0; i < 26; i++)
202 if (drives[i].in_use && !strcmp(drives[i].unixpath, home)) mapped = TRUE;
208 for (letter = 'H'; letter <= 'Z'; letter++)
210 if (!drives[letter - 'A'].in_use)
212 add_drive(letter, home, "Home", "0", DRIVE_FIXED);
213 WINE_TRACE("allocated drive %c as the user's home directory\n", letter);
217 if (letter == ('Z' + 1)) report_error(NO_HOME);
221 static void ensure_drive_c_is_mapped()
224 const char *configdir = wine_get_config_dir();
228 if (drives[2].in_use) return;
230 len = snprintf(NULL, 0, "%s/../drive_c", configdir);
231 drive_c_dir = HeapAlloc(GetProcessHeap(), 0, len);
232 snprintf(drive_c_dir, len, "%s/../drive_c", configdir);
233 HeapFree(GetProcessHeap(), 0, drive_c_dir);
235 if (stat(drive_c_dir, &buf) == 0)
237 add_drive('C', "../drive_c", "Virtual Windows Drive", "0", DRIVE_FIXED);
241 report_error(NO_DRIVE_C);
245 int autodetect_drives()
252 /* we want to build a list of autodetected drives, then ensure each entry
253 exists in the users setup. so, we superimpose the autodetected drives
254 onto whatever is pre-existing.
256 for now let's just rummage around inside the fstab.
261 working_mask = drive_available_mask('\0');
264 fstab = fopen("/etc/fstab", "r");
267 report_error(FSTAB_OPEN);
271 while ((ent = getmntent(fstab)))
277 WINE_TRACE("ent->mnt_dir=%s\n", ent->mnt_dir);
279 if (should_ignore_fstype(ent->mnt_type)) continue;
280 if (should_ignore_mnt_dir(ent->mnt_dir)) continue;
281 if (is_drive_defined(ent->mnt_dir)) continue;
283 /* allocate a drive for it */
284 letter = allocate_letter();
287 report_error(NO_MORE_LETTERS);
292 WINE_TRACE("adding drive %c for %s, type %s\n", letter, ent->mnt_dir, ent->mnt_type);
294 strncpy(label, "Drive X", 8);
297 if (!strcmp(ent->mnt_type, "nfs")) type = DRIVE_REMOTE;
298 else if (!strcmp(ent->mnt_type, "nfs4")) type = DRIVE_REMOTE;
299 else if (!strcmp(ent->mnt_type, "smbfs")) type = DRIVE_REMOTE;
300 else if (!strcmp(ent->mnt_type, "cifs")) type = DRIVE_REMOTE;
301 else if (!strcmp(ent->mnt_type, "coda")) type = DRIVE_REMOTE;
302 else if (!strcmp(ent->mnt_type, "iso9660")) type = DRIVE_CDROM;
303 else if (!strcmp(ent->mnt_type, "ramfs")) type = DRIVE_RAMDISK;
304 else type = DRIVE_FIXED;
306 add_drive(letter, ent->mnt_dir, label, "0", type);
308 /* working_mask is a map of the drive letters still available. */
309 working_mask &= ~DRIVE_MASK_BIT(letter);
315 ensure_root_is_mapped();
317 ensure_drive_c_is_mapped();
319 ensure_home_is_mapped();