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Commit | Line | Data |
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eb63b9b8 KZ |
1 | /* |
2 | * mkfs.bfs - Create SCO BFS filesystem - aeb, 1999-09-07 | |
3 | * | |
9d07f58d | 4 | * Usage: mkfs.bfs [-N nr-of-inodes] [-V volume-name] [-F fsname] device |
eb63b9b8 KZ |
5 | */ |
6 | ||
6496cb07 SK |
7 | #include <errno.h> |
8 | #include <fcntl.h> | |
9 | #include <getopt.h> | |
10 | #include <limits.h> | |
eb63b9b8 KZ |
11 | #include <stdio.h> |
12 | #include <stdlib.h> | |
eb63b9b8 | 13 | #include <string.h> |
6496cb07 | 14 | #include <sys/stat.h> |
eb63b9b8 | 15 | #include <time.h> |
6496cb07 | 16 | #include <unistd.h> |
c36f105d | 17 | |
6496cb07 | 18 | #include "blkdev.h" |
c36f105d | 19 | #include "c.h" |
45ca68ec | 20 | #include "closestream.h" |
66ee8158 | 21 | #include "nls.h" |
b7e27117 | 22 | #include "strutils.h" |
e0c67b83 | 23 | #include "xalloc.h" |
9d07f58d | 24 | #include "bitops.h" |
eb63b9b8 | 25 | |
eb63b9b8 KZ |
26 | #define BFS_ROOT_INO 2 |
27 | #define BFS_NAMELEN 14 | |
28 | #define BFS_BLOCKSIZE 512 | |
29 | #define BFS_SUPER_MAGIC 0x1badface | |
30 | ||
31 | /* superblock - 512 bytes */ | |
32 | struct bfssb { | |
9d07f58d | 33 | uint32_t s_magic; |
34 | uint32_t s_start; /* byte offset of start of data */ | |
35 | uint32_t s_end; /* sizeof(slice)-1 */ | |
6496cb07 SK |
36 | |
37 | /* for recovery during compaction */ | |
9d07f58d | 38 | uint32_t s_from, s_to; /* src and dest block of current transfer */ |
39 | int32_t s_backup_from, s_backup_to; | |
6496cb07 SK |
40 | |
41 | /* labels - may well contain garbage */ | |
42 | char s_fsname[6]; | |
43 | char s_volume[6]; | |
44 | char s_pad[472]; | |
eb63b9b8 KZ |
45 | }; |
46 | ||
47 | /* inode - 64 bytes */ | |
48 | struct bfsi { | |
9d07f58d | 49 | uint16_t i_ino; |
6496cb07 | 50 | unsigned char i_pad1[2]; |
9d07f58d | 51 | uint32_t i_first_block; |
52 | uint32_t i_last_block; | |
53 | uint32_t i_bytes_to_end; | |
54 | uint32_t i_type; /* 1: file, 2: the unique dir */ | |
55 | uint32_t i_mode; | |
56 | uint32_t i_uid, i_gid; | |
57 | uint32_t i_nlinks; | |
58 | uint32_t i_atime, i_mtime, i_ctime; | |
6496cb07 | 59 | unsigned char i_pad2[16]; |
eb63b9b8 KZ |
60 | }; |
61 | ||
62 | #define BFS_DIR_TYPE 2 | |
63 | ||
64 | /* directory entry - 16 bytes */ | |
65 | struct bfsde { | |
9d07f58d | 66 | uint16_t d_ino; |
de8b064b | 67 | char d_name[BFS_NAMELEN]; |
eb63b9b8 KZ |
68 | }; |
69 | ||
6e1eda6f | 70 | static void __attribute__((__noreturn__)) usage(void) |
de8b064b | 71 | { |
6e1eda6f | 72 | FILE *out = stdout; |
de8b064b SK |
73 | fprintf(out, |
74 | _("Usage: %s [options] device [block-count]\n"), | |
75 | program_invocation_short_name); | |
451dbcfa BS |
76 | |
77 | fputs(USAGE_SEPARATOR, out); | |
78 | fputs(_("Make an SCO bfs filesystem.\n"), out); | |
79 | ||
de8b064b SK |
80 | fprintf(out, _("\nOptions:\n" |
81 | " -N, --inodes=NUM specify desired number of inodes\n" | |
82 | " -V, --vname=NAME specify volume name\n" | |
83 | " -F, --fname=NAME specify file system name\n" | |
84 | " -v, --verbose explain what is being done\n" | |
85 | " -c this option is silently ignored\n" | |
86 | " -l this option is silently ignored\n" | |
b3054454 | 87 | )); |
f45f3ec3 | 88 | printf(USAGE_HELP_OPTIONS(21)); |
de8b064b | 89 | |
f45f3ec3 | 90 | printf(USAGE_MAN_TAIL("mkfs.bfs(8)")); |
6e1eda6f | 91 | exit(EXIT_SUCCESS); |
de8b064b | 92 | } |
eb63b9b8 | 93 | |
6496cb07 SK |
94 | int main(int argc, char **argv) |
95 | { | |
eb63b9b8 | 96 | char *device, *volume, *fsname; |
b7e27117 | 97 | long inodes; |
098fa6b1 ST |
98 | unsigned long long total_blocks, ino_bytes, ino_blocks, data_blocks; |
99 | unsigned long long user_specified_total_blocks = 0; | |
eb63b9b8 KZ |
100 | int verbose = 0; |
101 | int fd; | |
9d07f58d | 102 | uint32_t first_block; |
eb63b9b8 KZ |
103 | struct bfssb sb; |
104 | struct bfsi ri; | |
105 | struct bfsde de; | |
106 | struct stat statbuf; | |
107 | time_t now; | |
108 | int c, i, len; | |
eb63b9b8 | 109 | |
de8b064b SK |
110 | enum { VERSION_OPTION = CHAR_MAX + 1 }; |
111 | static const struct option longopts[] = { | |
112 | {"inodes", required_argument, NULL, 'N'}, | |
113 | {"vname", required_argument, NULL, 'V'}, | |
114 | {"fname", required_argument, NULL, 'F'}, | |
115 | {"verbose", no_argument, NULL, 'v'}, | |
116 | {"version", no_argument, NULL, VERSION_OPTION}, | |
117 | {"help", no_argument, NULL, 'h'}, | |
118 | {NULL, 0, NULL, 0} | |
119 | }; | |
eb63b9b8 | 120 | |
88ffbf86 DB |
121 | setlocale(LC_ALL, ""); |
122 | bindtextdomain(PACKAGE, LOCALEDIR); | |
123 | textdomain(PACKAGE); | |
2c308875 | 124 | close_stdout_atexit(); |
88ffbf86 | 125 | |
6e1eda6f RM |
126 | if (argc < 2) { |
127 | warnx(_("not enough arguments")); | |
128 | errtryhelp(EXIT_FAILURE); | |
129 | } | |
de8b064b | 130 | if (argc == 2 && !strcmp(argv[1], "-V")) |
68224d10 | 131 | print_version(EXIT_SUCCESS); |
eb63b9b8 KZ |
132 | |
133 | volume = fsname = " "; /* is there a default? */ | |
134 | inodes = 0; | |
135 | ||
de8b064b | 136 | while ((c = getopt_long(argc, argv, "N:V:F:vhcl", longopts, NULL)) != -1) { |
eb63b9b8 KZ |
137 | switch (c) { |
138 | case 'N': | |
b7e27117 | 139 | inodes = strtol_or_err(optarg, _("invalid number of inodes")); |
eb63b9b8 KZ |
140 | break; |
141 | ||
142 | case 'V': | |
143 | len = strlen(optarg); | |
144 | if (len <= 0 || len > 6) | |
c36f105d | 145 | errx(EXIT_FAILURE, _("volume name too long")); |
e0c67b83 | 146 | volume = xstrdup(optarg); |
eb63b9b8 KZ |
147 | break; |
148 | ||
149 | case 'F': | |
150 | len = strlen(optarg); | |
151 | if (len <= 0 || len > 6) | |
c36f105d | 152 | errx(EXIT_FAILURE, _("fsname name too long")); |
e0c67b83 | 153 | fsname = xstrdup(optarg); |
eb63b9b8 KZ |
154 | break; |
155 | ||
156 | case 'v': | |
157 | verbose = 1; | |
158 | break; | |
159 | ||
eb63b9b8 KZ |
160 | case 'c': |
161 | case 'l': | |
6496cb07 | 162 | /* when called via mkfs we may get options c,l,v */ |
eb63b9b8 KZ |
163 | break; |
164 | ||
de8b064b | 165 | case VERSION_OPTION: |
68224d10 | 166 | print_version(EXIT_SUCCESS); |
de8b064b | 167 | case 'h': |
6e1eda6f | 168 | usage(); |
eb63b9b8 | 169 | default: |
677ec86c | 170 | errtryhelp(EXIT_FAILURE); |
eb63b9b8 KZ |
171 | } |
172 | } | |
173 | ||
6e1eda6f RM |
174 | if (optind == argc) { |
175 | warnx(_("no device specified")); | |
176 | errtryhelp(EXIT_FAILURE); | |
177 | } | |
eb63b9b8 KZ |
178 | |
179 | device = argv[optind++]; | |
180 | ||
6496cb07 | 181 | if (stat(device, &statbuf) < 0) |
fc14ceba | 182 | err(EXIT_FAILURE, _("stat of %s failed"), device); |
eb63b9b8 | 183 | |
5fc7694a | 184 | fd = open_blkdev_or_file(&statbuf, device, O_RDWR); |
6496cb07 | 185 | if (fd < 0) |
c36f105d | 186 | err(EXIT_FAILURE, _("cannot open %s"), device); |
eb63b9b8 | 187 | |
6496cb07 SK |
188 | if (optind == argc - 1) |
189 | user_specified_total_blocks = | |
33fb5cfd | 190 | strtou64_or_err(argv[optind], _("invalid block-count")); |
6e1eda6f RM |
191 | else if (optind != argc) { |
192 | warnx(_("bad usage")); | |
193 | errtryhelp(EXIT_FAILURE); | |
194 | } | |
eb63b9b8 | 195 | |
098fa6b1 | 196 | if (blkdev_get_sectors(fd, &total_blocks) == -1) { |
c36f105d SK |
197 | if (!user_specified_total_blocks) |
198 | err(EXIT_FAILURE, _("cannot get size of %s"), device); | |
eb63b9b8 KZ |
199 | total_blocks = user_specified_total_blocks; |
200 | } else if (user_specified_total_blocks) { | |
201 | if (user_specified_total_blocks > total_blocks) | |
6496cb07 SK |
202 | errx(EXIT_FAILURE, |
203 | _("blocks argument too large, max is %llu"), | |
204 | total_blocks); | |
eb63b9b8 KZ |
205 | total_blocks = user_specified_total_blocks; |
206 | } | |
207 | ||
208 | if (!inodes) { | |
209 | /* pick some reasonable default */ | |
6496cb07 | 210 | inodes = 8 * (total_blocks / 800); |
eb63b9b8 KZ |
211 | if (inodes < 48) |
212 | inodes = 48; | |
6496cb07 | 213 | if (512 < inodes) |
eb63b9b8 KZ |
214 | inodes = 512; |
215 | } else { | |
216 | /* believe the user */ | |
6496cb07 | 217 | if (512 < inodes) |
c36f105d | 218 | errx(EXIT_FAILURE, _("too many inodes - max is 512")); |
eb63b9b8 KZ |
219 | } |
220 | ||
221 | ino_bytes = inodes * sizeof(struct bfsi); | |
222 | ino_blocks = (ino_bytes + BFS_BLOCKSIZE - 1) / BFS_BLOCKSIZE; | |
223 | data_blocks = total_blocks - ino_blocks - 1; | |
224 | ||
ee312c65 | 225 | /* mimic the behavior of SCO's mkfs - maybe this limit is needed */ |
eb63b9b8 | 226 | if (data_blocks < 32) |
6496cb07 SK |
227 | errx(EXIT_FAILURE, |
228 | _("not enough space, need at least %llu blocks"), | |
229 | ino_blocks + 33); | |
eb63b9b8 KZ |
230 | |
231 | memset(&sb, 0, sizeof(sb)); | |
9d07f58d | 232 | sb.s_magic = cpu_to_le32(BFS_SUPER_MAGIC); |
233 | sb.s_start = cpu_to_le32(ino_bytes + sizeof(struct bfssb)); | |
234 | sb.s_end = cpu_to_le32(total_blocks * BFS_BLOCKSIZE - 1); | |
eb63b9b8 KZ |
235 | sb.s_from = sb.s_to = sb.s_backup_from = sb.s_backup_to = -1; |
236 | memcpy(sb.s_fsname, fsname, 6); | |
237 | memcpy(sb.s_volume, volume, 6); | |
238 | ||
239 | if (verbose) { | |
66ee8158 KZ |
240 | fprintf(stderr, _("Device: %s\n"), device); |
241 | fprintf(stderr, _("Volume: <%-6s>\n"), volume); | |
242 | fprintf(stderr, _("FSname: <%-6s>\n"), fsname); | |
243 | fprintf(stderr, _("BlockSize: %d\n"), BFS_BLOCKSIZE); | |
6496cb07 | 244 | if (ino_blocks == 1) |
e3ca1312 | 245 | fprintf(stderr, _("Inodes: %ld (in 1 block)\n"), |
66ee8158 KZ |
246 | inodes); |
247 | else | |
e3ca1312 | 248 | fprintf(stderr, _("Inodes: %ld (in %llu blocks)\n"), |
66ee8158 | 249 | inodes, ino_blocks); |
e3ca1312 | 250 | fprintf(stderr, _("Blocks: %llu\n"), total_blocks); |
66ee8158 | 251 | fprintf(stderr, _("Inode end: %d, Data end: %d\n"), |
9d07f58d | 252 | le32_to_cpu(sb.s_start) - 1, le32_to_cpu(sb.s_end)); |
eb63b9b8 KZ |
253 | } |
254 | ||
255 | if (write(fd, &sb, sizeof(sb)) != sizeof(sb)) | |
e5794f54 | 256 | err(EXIT_FAILURE, _("error writing superblock")); |
eb63b9b8 KZ |
257 | |
258 | memset(&ri, 0, sizeof(ri)); | |
9d07f58d | 259 | ri.i_ino = cpu_to_le16(BFS_ROOT_INO); |
260 | first_block = 1 + ino_blocks; | |
261 | ri.i_first_block = cpu_to_le32(first_block); | |
262 | ri.i_last_block = cpu_to_le32(first_block + | |
263 | (inodes * sizeof(de) - 1) / BFS_BLOCKSIZE); | |
264 | ri.i_bytes_to_end = cpu_to_le32(first_block * BFS_BLOCKSIZE | |
265 | + 2 * sizeof(struct bfsde) - 1); | |
266 | ri.i_type = cpu_to_le32(BFS_DIR_TYPE); | |
267 | ri.i_mode = cpu_to_le32(S_IFDIR | 0755); /* or just 0755 */ | |
268 | ri.i_uid = cpu_to_le32(0); | |
269 | ri.i_gid = cpu_to_le32(1); /* random */ | |
eb63b9b8 KZ |
270 | ri.i_nlinks = 2; |
271 | time(&now); | |
9d07f58d | 272 | ri.i_atime = cpu_to_le32(now); |
273 | ri.i_mtime = cpu_to_le32(now); | |
274 | ri.i_ctime = cpu_to_le32(now); | |
eb63b9b8 KZ |
275 | |
276 | if (write(fd, &ri, sizeof(ri)) != sizeof(ri)) | |
e5794f54 | 277 | err(EXIT_FAILURE, _("error writing root inode")); |
eb63b9b8 KZ |
278 | |
279 | memset(&ri, 0, sizeof(ri)); | |
6496cb07 | 280 | for (i = 1; i < inodes; i++) |
eb63b9b8 | 281 | if (write(fd, &ri, sizeof(ri)) != sizeof(ri)) |
e5794f54 | 282 | err(EXIT_FAILURE, _("error writing inode")); |
eb63b9b8 | 283 | |
6496cb07 | 284 | if (lseek(fd, (1 + ino_blocks) * BFS_BLOCKSIZE, SEEK_SET) == -1) |
e5794f54 | 285 | err(EXIT_FAILURE, _("seek error")); |
eb63b9b8 KZ |
286 | |
287 | memset(&de, 0, sizeof(de)); | |
9d07f58d | 288 | de.d_ino = cpu_to_le16(BFS_ROOT_INO); |
eb63b9b8 KZ |
289 | memcpy(de.d_name, ".", 1); |
290 | if (write(fd, &de, sizeof(de)) != sizeof(de)) | |
e5794f54 | 291 | err(EXIT_FAILURE, _("error writing . entry")); |
eb63b9b8 KZ |
292 | |
293 | memcpy(de.d_name, "..", 2); | |
294 | if (write(fd, &de, sizeof(de)) != sizeof(de)) | |
e5794f54 | 295 | err(EXIT_FAILURE, _("error writing .. entry")); |
eb63b9b8 | 296 | |
0dfd626f | 297 | if (close_fd(fd) != 0) |
c36f105d | 298 | err(EXIT_FAILURE, _("error closing %s"), device); |
eb63b9b8 | 299 | |
c36f105d | 300 | return EXIT_SUCCESS; |
eb63b9b8 | 301 | } |