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Commit | Line | Data |
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63985320 TT |
1 | /* |
2 | * util.c --- helper functions used by tune2fs and mke2fs | |
efc6f628 | 3 | * |
63985320 TT |
4 | * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o. |
5 | * | |
6 | * %Begin-Header% | |
7 | * This file may be redistributed under the terms of the GNU Public | |
8 | * License. | |
9 | * %End-Header% | |
10 | */ | |
11 | ||
6ef3920a TT |
12 | #define _LARGEFILE_SOURCE |
13 | #define _LARGEFILE64_SOURCE | |
14 | ||
63985320 TT |
15 | #include <stdio.h> |
16 | #include <string.h> | |
17 | #ifdef HAVE_ERRNO_H | |
18 | #include <errno.h> | |
19 | #endif | |
63985320 TT |
20 | #ifdef HAVE_LINUX_MAJOR_H |
21 | #include <linux/major.h> | |
d71a495d TT |
22 | #endif |
23 | #ifdef HAVE_SYS_STAT_H | |
63985320 TT |
24 | #include <sys/stat.h> |
25 | #endif | |
26 | ||
27 | #include "et/com_err.h" | |
28 | #include "e2p/e2p.h" | |
54c637d4 | 29 | #include "ext2fs/ext2_fs.h" |
63985320 TT |
30 | #include "ext2fs/ext2fs.h" |
31 | #include "nls-enable.h" | |
ed1b33e8 | 32 | #include "blkid/blkid.h" |
63985320 TT |
33 | #include "util.h" |
34 | ||
35 | #ifndef HAVE_STRCASECMP | |
36 | int strcasecmp (char *s1, char *s2) | |
37 | { | |
38 | while (*s1 && *s2) { | |
39 | int ch1 = *s1++, ch2 = *s2++; | |
40 | if (isupper (ch1)) | |
41 | ch1 = tolower (ch1); | |
42 | if (isupper (ch2)) | |
43 | ch2 = tolower (ch2); | |
44 | if (ch1 != ch2) | |
45 | return ch1 - ch2; | |
46 | } | |
47 | return *s1 ? 1 : *s2 ? -1 : 0; | |
48 | } | |
49 | #endif | |
50 | ||
0072f8de AD |
51 | /* |
52 | * Given argv[0], return the program name. | |
53 | */ | |
54 | char *get_progname(char *argv_zero) | |
55 | { | |
56 | char *cp; | |
57 | ||
58 | cp = strrchr(argv_zero, '/'); | |
59 | if (!cp ) | |
60 | return argv_zero; | |
61 | else | |
62 | return cp+1; | |
63 | } | |
64 | ||
63985320 TT |
65 | void proceed_question(void) |
66 | { | |
67 | char buf[256]; | |
c8c071a0 | 68 | const char *short_yes = _("yY"); |
63985320 TT |
69 | |
70 | fflush(stdout); | |
71 | fflush(stderr); | |
54434927 | 72 | fputs(_("Proceed anyway? (y,n) "), stdout); |
63985320 | 73 | buf[0] = 0; |
d9039ae0 DL |
74 | if (!fgets(buf, sizeof(buf), stdin) || |
75 | strchr(short_yes, buf[0]) == 0) | |
63985320 TT |
76 | exit(1); |
77 | } | |
78 | ||
79 | void check_plausibility(const char *device) | |
80 | { | |
81 | int val; | |
6ef3920a TT |
82 | #ifdef HAVE_OPEN64 |
83 | struct stat64 s; | |
efc6f628 | 84 | |
6ef3920a TT |
85 | val = stat64(device, &s); |
86 | #else | |
63985320 | 87 | struct stat s; |
efc6f628 | 88 | |
63985320 | 89 | val = stat(device, &s); |
6ef3920a | 90 | #endif |
efc6f628 | 91 | |
63985320 TT |
92 | if(val == -1) { |
93 | fprintf(stderr, _("Could not stat %s --- %s\n"), | |
94 | device, error_message(errno)); | |
95 | if (errno == ENOENT) | |
54434927 TT |
96 | fputs(_("\nThe device apparently does not exist; " |
97 | "did you specify it correctly?\n"), stderr); | |
63985320 TT |
98 | exit(1); |
99 | } | |
289e0557 | 100 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
b34cbddb MA |
101 | /* On FreeBSD, all disk devices are character specials */ |
102 | if (!S_ISBLK(s.st_mode) && !S_ISCHR(s.st_mode)) | |
103 | #else | |
104 | if (!S_ISBLK(s.st_mode)) | |
105 | #endif | |
106 | { | |
63985320 TT |
107 | printf(_("%s is not a block special device.\n"), device); |
108 | proceed_question(); | |
109 | return; | |
110 | } | |
111 | ||
112 | #ifdef HAVE_LINUX_MAJOR_H | |
113 | #ifndef MAJOR | |
114 | #define MAJOR(dev) ((dev)>>8) | |
115 | #define MINOR(dev) ((dev) & 0xff) | |
116 | #endif | |
117 | #ifndef SCSI_BLK_MAJOR | |
d07b1503 TT |
118 | #ifdef SCSI_DISK0_MAJOR |
119 | #ifdef SCSI_DISK8_MAJOR | |
120 | #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \ | |
121 | ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \ | |
122 | ((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR)) | |
123 | #else | |
124 | #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \ | |
125 | ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR)) | |
126 | #endif /* defined(SCSI_DISK8_MAJOR) */ | |
127 | #define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR) | |
128 | #else | |
63985320 | 129 | #define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR) |
d07b1503 TT |
130 | #endif /* defined(SCSI_DISK0_MAJOR) */ |
131 | #endif /* defined(SCSI_BLK_MAJOR) */ | |
63985320 TT |
132 | if (((MAJOR(s.st_rdev) == HD_MAJOR && |
133 | MINOR(s.st_rdev)%64 == 0) || | |
134 | (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) && | |
135 | MINOR(s.st_rdev)%16 == 0))) { | |
136 | printf(_("%s is entire device, not just one partition!\n"), | |
137 | device); | |
138 | proceed_question(); | |
139 | } | |
140 | #endif | |
141 | } | |
142 | ||
143 | void check_mount(const char *device, int force, const char *type) | |
144 | { | |
145 | errcode_t retval; | |
146 | int mount_flags; | |
147 | ||
148 | retval = ext2fs_check_if_mounted(device, &mount_flags); | |
149 | if (retval) { | |
150 | com_err("ext2fs_check_if_mount", retval, | |
151 | _("while determining whether %s is mounted."), | |
152 | device); | |
153 | return; | |
154 | } | |
2fa8f37f TT |
155 | if (mount_flags & EXT2_MF_MOUNTED) { |
156 | fprintf(stderr, _("%s is mounted; "), device); | |
c16e610c | 157 | if (force > 2) { |
2fa8f37f TT |
158 | fputs(_("mke2fs forced anyway. Hope /etc/mtab is " |
159 | "incorrect.\n"), stderr); | |
160 | return; | |
161 | } | |
162 | abort_mke2fs: | |
63985320 TT |
163 | fprintf(stderr, _("will not make a %s here!\n"), type); |
164 | exit(1); | |
165 | } | |
2fa8f37f TT |
166 | if (mount_flags & EXT2_MF_BUSY) { |
167 | fprintf(stderr, _("%s is apparently in use by the system; "), | |
168 | device); | |
c16e610c | 169 | if (force > 2) { |
2fa8f37f TT |
170 | fputs(_("mke2fs forced anyway.\n"), stderr); |
171 | return; | |
172 | } | |
173 | goto abort_mke2fs; | |
174 | } | |
63985320 TT |
175 | } |
176 | ||
177 | void parse_journal_opts(const char *opts) | |
178 | { | |
179 | char *buf, *token, *next, *p, *arg; | |
180 | int len; | |
181 | int journal_usage = 0; | |
182 | ||
183 | len = strlen(opts); | |
184 | buf = malloc(len+1); | |
185 | if (!buf) { | |
54434927 TT |
186 | fputs(_("Couldn't allocate memory to parse journal " |
187 | "options!\n"), stderr); | |
63985320 TT |
188 | exit(1); |
189 | } | |
190 | strcpy(buf, opts); | |
191 | for (token = buf; token && *token; token = next) { | |
192 | p = strchr(token, ','); | |
193 | next = 0; | |
194 | if (p) { | |
195 | *p = 0; | |
196 | next = p+1; | |
efc6f628 | 197 | } |
63985320 TT |
198 | arg = strchr(token, '='); |
199 | if (arg) { | |
200 | *arg = 0; | |
201 | arg++; | |
202 | } | |
203 | #if 0 | |
204 | printf("Journal option=%s, argument=%s\n", token, | |
205 | arg ? arg : "NONE"); | |
206 | #endif | |
207 | if (strcmp(token, "device") == 0) { | |
ed1b33e8 | 208 | journal_device = blkid_get_devname(NULL, arg, NULL); |
2d15576d | 209 | if (!journal_device) { |
63985320 TT |
210 | journal_usage++; |
211 | continue; | |
212 | } | |
63985320 TT |
213 | } else if (strcmp(token, "size") == 0) { |
214 | if (!arg) { | |
215 | journal_usage++; | |
216 | continue; | |
217 | } | |
218 | journal_size = strtoul(arg, &p, 0); | |
2537b6d0 | 219 | if (*p) |
63985320 | 220 | journal_usage++; |
63985320 TT |
221 | } else if (strcmp(token, "v1_superblock") == 0) { |
222 | journal_flags |= EXT2_MKJOURNAL_V1_SUPER; | |
223 | continue; | |
d6a27e00 TT |
224 | } else |
225 | journal_usage++; | |
63985320 TT |
226 | } |
227 | if (journal_usage) { | |
54434927 | 228 | fputs(_("\nBad journal options specified.\n\n" |
63985320 TT |
229 | "Journal options are separated by commas, " |
230 | "and may take an argument which\n" | |
231 | "\tis set off by an equals ('=') sign.\n\n" | |
ddc32a04 | 232 | "Valid journal options are:\n" |
63985320 TT |
233 | "\tsize=<journal size in megabytes>\n" |
234 | "\tdevice=<journal device>\n\n" | |
2537b6d0 | 235 | "The journal size must be between " |
7087bbec | 236 | "1024 and 10240000 filesystem blocks.\n\n"), stderr); |
45415c2d | 237 | free(buf); |
63985320 TT |
238 | exit(1); |
239 | } | |
45415c2d | 240 | free(buf); |
efc6f628 | 241 | } |
63985320 | 242 | |
5683e6e2 | 243 | /* |
2537b6d0 TT |
244 | * Determine the number of journal blocks to use, either via |
245 | * user-specified # of megabytes, or via some intelligently selected | |
246 | * defaults. | |
efc6f628 | 247 | * |
5683e6e2 TT |
248 | * Find a reasonable journal file size (in blocks) given the number of blocks |
249 | * in the filesystem. For very small filesystems, it is not reasonable to | |
250 | * have a journal that fills more than half of the filesystem. | |
251 | */ | |
d4e0b1c6 | 252 | unsigned int figure_journal_size(int size, ext2_filsys fs) |
5683e6e2 | 253 | { |
56d12367 | 254 | int j_blocks; |
5683e6e2 | 255 | |
56d12367 TT |
256 | j_blocks = ext2fs_default_journal_size(fs->super->s_blocks_count); |
257 | if (j_blocks < 0) { | |
54434927 | 258 | fputs(_("\nFilesystem too small for a journal\n"), stderr); |
2537b6d0 TT |
259 | return 0; |
260 | } | |
efc6f628 | 261 | |
9dc6ad1e | 262 | if (size > 0) { |
4ea7bd04 | 263 | j_blocks = size * 1024 / (fs->blocksize / 1024); |
f331acbe | 264 | if (j_blocks < 1024 || j_blocks > 10240000) { |
2537b6d0 TT |
265 | fprintf(stderr, _("\nThe requested journal " |
266 | "size is %d blocks; it must be\n" | |
f331acbe | 267 | "between 1024 and 10240000 blocks. " |
2537b6d0 TT |
268 | "Aborting.\n"), |
269 | j_blocks); | |
270 | exit(1); | |
271 | } | |
d4e0b1c6 | 272 | if ((unsigned) j_blocks > fs->super->s_free_blocks_count / 2) { |
54434927 TT |
273 | fputs(_("\nJournal size too big for filesystem.\n"), |
274 | stderr); | |
2537b6d0 TT |
275 | exit(1); |
276 | } | |
2537b6d0 | 277 | } |
5683e6e2 TT |
278 | return j_blocks; |
279 | } | |
2537b6d0 | 280 | |
66cf2f60 TT |
281 | void print_check_message(ext2_filsys fs) |
282 | { | |
283 | printf(_("This filesystem will be automatically " | |
284 | "checked every %d mounts or\n" | |
285 | "%g days, whichever comes first. " | |
286 | "Use tune2fs -c or -i to override.\n"), | |
287 | fs->super->s_max_mnt_count, | |
288 | (double)fs->super->s_checkinterval / (3600 * 24)); | |
289 | } |