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
22 #include <wine/debug.h>
23 #include <wine/library.h>
38 WINE_DEFAULT_DEBUG_CHANNEL(winecfg);
41 static long working_mask = 0;
44 static char *ignored_fstypes[] = {
55 static BOOL should_ignore_fstype(char *type)
59 for (s = ignored_fstypes; *s; s++)
60 if (!strcmp(*s, type)) return TRUE;
65 static BOOL is_drive_defined(char *path)
69 for (i = 0; i < 26; i++)
70 if (drives[i].in_use && !strcmp(drives[i].unixpath, path)) return TRUE;
75 /* returns Z + 1 if there are no more available letters */
76 static char allocate_letter()
80 for (letter = 'C'; letter <= 'Z'; letter++)
81 if ((DRIVE_MASK_BIT(letter) & working_mask) != 0) break;
88 #define NO_MORE_LETTERS 2
92 static void report_error(int code)
102 static const char *s = "Could not open your mountpoint description table.\n\nOpening of /etc/fstab failed: %s";
103 len = snprintf(NULL, 0, s, strerror(errno));
104 buffer = HeapAlloc(GetProcessHeap(), 0, len + 1);
105 snprintf(buffer, len, s, strerror(errno));
106 MessageBox(NULL, s, "", MB_OK | MB_ICONEXCLAMATION);
107 HeapFree(GetProcessHeap(), 0, buffer);
111 fprintf(stderr, "winecfg: could not open fstab: %s", strerror(errno));
115 case NO_MORE_LETTERS:
116 if (gui_mode) MessageBox(NULL, "No more letters are available to auto-detect available drives with.", "", MB_OK | MB_ICONEXCLAMATION);
117 fprintf(stderr, "winecfg: no more available letters while scanning /etc/fstab");
121 if (gui_mode) MessageBox(NULL, "Could not ensure that the root directory was mapped.\n\n"
122 "This can happen if you run out of drive letters. "
123 "It's important to have the root directory mapped, otherwise Wine"
124 "will not be able to always find the programs you want to run. "
125 "Try unmapping a drive letter then trying again.", "",
126 MB_OK | MB_ICONEXCLAMATION);
127 else fprintf(stderr, "winecfg: unable to map root drive\n");
132 MessageBox(NULL, "No virtual drive C mapped\n\nTry running wineprefixcreate", "", MB_OK | MB_ICONEXCLAMATION);
134 fprintf(stderr, "winecfg: no drive_c directory\n");
139 static void ensure_root_is_mapped()
144 for (i = 0; i < 26; i++)
145 if (drives[i].in_use && !strcmp(drives[i].unixpath, "/")) mapped = TRUE;
149 /* work backwards from Z, trying to map it */
152 for (letter = 'Z'; letter >= 'A'; letter--)
154 if (drives[letter - 'A'].in_use) continue;
155 add_drive(letter, "/", "System", 0, DRIVE_FIXED);
156 WINE_TRACE("allocated drive %c as the root drive\n", letter);
159 if (letter == ('A' - 1)) report_error(NO_ROOT);
163 static void ensure_drive_c_is_mapped()
166 const char *configdir = wine_get_config_dir();
170 if (drives[2].in_use) return;
172 len = snprintf(NULL, 0, "%s/../drive_c", configdir);
173 drive_c_dir = HeapAlloc(GetProcessHeap(), 0, len);
174 snprintf(drive_c_dir, len, "%s/../drive_c", configdir);
175 HeapFree(GetProcessHeap(), 0, drive_c_dir);
177 if (stat(drive_c_dir, &buf) == 0)
179 add_drive('C', "../drive_c", "Virtual Windows Drive", "0", DRIVE_FIXED);
183 report_error(NO_DRIVE_C);
187 int autodetect_drives()
194 /* we want to build a list of autodetected drives, then ensure each entry
195 exists in the users setup. so, we superimpose the autodetected drives
196 onto whatever is pre-existing.
198 for now let's just rummage around inside the fstab.
203 working_mask = drive_available_mask('\0');
206 fstab = fopen("/etc/fstab", "r");
209 report_error(FSTAB_OPEN);
213 while ((ent = getmntent(fstab)))
219 WINE_TRACE("ent->mnt_dir=%s\n", ent->mnt_dir);
221 if (should_ignore_fstype(ent->mnt_type)) continue;
222 if (is_drive_defined(ent->mnt_dir)) continue;
224 /* allocate a drive for it */
225 letter = allocate_letter();
228 report_error(NO_MORE_LETTERS);
233 WINE_TRACE("adding drive %c for %s, type %s\n", letter, ent->mnt_dir, ent->mnt_type);
235 strncpy(label, "Drive X", 8);
238 if (!strcmp(ent->mnt_type, "nfs")) type = DRIVE_REMOTE;
239 else if (!strcmp(ent->mnt_type, "nfs4")) type = DRIVE_REMOTE;
240 else if (!strcmp(ent->mnt_type, "smbfs")) type = DRIVE_REMOTE;
241 else if (!strcmp(ent->mnt_type, "cifs")) type = DRIVE_REMOTE;
242 else if (!strcmp(ent->mnt_type, "coda")) type = DRIVE_REMOTE;
243 else if (!strcmp(ent->mnt_type, "iso9660")) type = DRIVE_CDROM;
244 else if (!strcmp(ent->mnt_type, "ramfs")) type = DRIVE_RAMDISK;
245 else type = DRIVE_FIXED;
247 add_drive(letter, ent->mnt_dir, label, "0", type);
249 working_mask |= DRIVE_MASK_BIT(letter);
255 ensure_root_is_mapped();
257 ensure_drive_c_is_mapped();