1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
|
/*
* blockdev.c --- Do various simple block device ioctls from the command line
* aeb, 991028
*/
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "nls.h"
#include "blkdev.h"
const char *progname;
struct bdc {
char *name;
char *iocname;
long ioc;
int argtype;
#define ARGNONE 0
#define ARGINTA 1
#define ARGINTAP 2
#define ARGINTP 3
#define ARGINTG 4
#define ARGLINTG 5
#define ARGLLINTG 6
#define ARGLU 7
#define ARGLLU 8
long argval;
char *argname;
char *help;
} bdcms[] = {
{ "--setro", "BLKROSET", BLKROSET, ARGINTP, 1, NULL, N_("set read-only") },
{ "--setrw", "BLKROSET", BLKROSET, ARGINTP, 0, NULL, N_("set read-write") },
{ "--getro", "BLKROGET", BLKROGET, ARGINTG, -1, NULL, N_("get read-only") },
{ "--getss", "BLKSSZGET", BLKSSZGET, ARGINTG, -1, NULL, N_("get sectorsize") },
{ "--getbsz", "BLKBSZGET", BLKBSZGET, ARGINTG, -1, NULL, N_("get blocksize") },
{ "--setbsz", "BLKBSZSET", BLKBSZSET, ARGINTAP, 0, "BLOCKSIZE", N_("set blocksize") },
{ "--getsize", "BLKGETSIZE", BLKGETSIZE, ARGLU, -1, NULL, N_("get 32-bit sector count") },
{ "--getsize64", "BLKGETSIZE64", BLKGETSIZE64, ARGLLU, -1, NULL, N_("get size in bytes") },
{ "--setra", "BLKRASET", BLKRASET, ARGINTA, 0, "READAHEAD", N_("set readahead") },
{ "--getra", "BLKRAGET", BLKRAGET, ARGLINTG, -1, NULL, N_("get readahead") },
{ "--setfra", "BLKFRASET", BLKFRASET, ARGINTA, 0, "FSREADAHEAD", N_("set filesystem readahead") },
{ "--getfra", "BLKFRAGET", BLKFRAGET, ARGLINTG, -1, NULL, N_("get filesystem readahead") },
{ "--flushbufs", "BLKFLSBUF", BLKFLSBUF, ARGNONE, 0, NULL, N_("flush buffers") },
{ "--rereadpt", "BLKRRPART", BLKRRPART, ARGNONE, 0, NULL,
N_("reread partition table") },
};
#define SIZE(a) (sizeof(a)/sizeof((a)[0]))
static void
usage(void) {
int i;
fputc('\n', stderr);
fprintf(stderr, _("Usage:\n"));
fprintf(stderr, " %s -V\n", progname);
fprintf(stderr, _(" %s --report [devices]\n"), progname);
fprintf(stderr, _(" %s [-v|-q] commands devices\n"), progname);
fputc('\n', stderr);
fprintf(stderr, _("Available commands:\n"));
fprintf(stderr, "\t%-30s %s\n", "--getsz",
_("get size in 512-byte sectors"));
for (i = 0; i < SIZE(bdcms); i++) {
if (bdcms[i].argname)
fprintf(stderr, "\t%s %-*s %s\n", bdcms[i].name,
(int) (29 - strlen(bdcms[i].name)),
bdcms[i].argname, _(bdcms[i].help));
else
fprintf(stderr, "\t%-30s %s\n", bdcms[i].name,
_(bdcms[i].help));
}
fputc('\n', stderr);
exit(1);
}
static int
find_cmd(char *s) {
int j;
for (j = 0; j < SIZE(bdcms); j++)
if (!strcmp(s, bdcms[j].name))
return j;
return -1;
}
void do_commands(int fd, char **argv, int d);
void report_header(void);
void report_device(char *device, int quiet);
void report_all_devices(void);
int
main(int argc, char **argv) {
int fd, d, j, k;
char *p;
/* egcs-2.91.66 is buggy and says:
blockdev.c:93: warning: `d' might be used uninitialized */
d = 0;
progname = argv[0];
if ((p = strrchr(progname, '/')) != NULL)
progname = p+1;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
if (argc < 2)
usage();
/* -V not together with commands */
if (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")) {
printf("%s (%s)\n", progname, PACKAGE_STRING);
exit(0);
}
/* --report not together with other commands */
if (!strcmp(argv[1], "--report")) {
report_header();
if (argc > 2) {
for (d = 2; d < argc; d++)
report_device(argv[d], 0);
} else {
report_all_devices();
}
exit(0);
}
/* do each of the commands on each of the devices */
/* devices start after last command */
for (d = 1; d < argc; d++) {
j = find_cmd(argv[d]);
if (j >= 0) {
if (bdcms[j].argtype == ARGINTA ||
bdcms[j].argtype == ARGINTAP)
d++;
continue;
}
if (!strcmp(argv[d], "--getsz"))
continue;
if (!strcmp(argv[d], "--")) {
d++;
break;
}
if (argv[d][0] != '-')
break;
}
if (d >= argc)
usage();
for (k = d; k < argc; k++) {
fd = open(argv[k], O_RDONLY, 0);
if (fd < 0) {
perror(argv[k]);
exit(1);
}
do_commands(fd, argv, d);
close(fd);
}
return 0;
}
void
do_commands(int fd, char **argv, int d) {
int res, i, j;
int iarg;
long larg;
long long llarg;
unsigned long lu;
unsigned long long llu;
int verbose = 0;
for (i = 1; i < d; i++) {
if (!strcmp(argv[i], "-v")) {
verbose = 1;
continue;
}
if (!strcmp(argv[i], "-q")) {
verbose = 0;
continue;
}
if (!strcmp(argv[i], "--getsz")) {
res = blkdev_get_sectors(fd, &llu);
if (res == 0)
printf("%lld\n", llu);
else
exit(1);
continue;
}
j = find_cmd(argv[i]);
if (j == -1) {
fprintf(stderr, _("%s: Unknown command: %s\n"),
progname, argv[i]);
usage();
}
switch(bdcms[j].argtype) {
default:
case ARGNONE:
res = ioctl(fd, bdcms[j].ioc, 0);
break;
case ARGINTA:
if (i == d-1) {
fprintf(stderr, _("%s requires an argument\n"),
bdcms[j].name);
usage();
}
iarg = atoi(argv[++i]);
res = ioctl(fd, bdcms[j].ioc, iarg);
break;
case ARGINTAP:
if (i == d-1) {
fprintf(stderr, _("%s requires an argument\n"),
bdcms[j].name);
usage();
}
iarg = atoi(argv[++i]);
res = ioctl(fd, bdcms[j].ioc, &iarg);
break;
case ARGINTP:
case ARGINTG:
iarg = bdcms[j].argval;
res = ioctl(fd, bdcms[j].ioc, &iarg);
break;
case ARGLINTG:
larg = bdcms[j].argval;
res = ioctl(fd, bdcms[j].ioc, &larg);
break;
case ARGLLINTG:
llarg = bdcms[j].argval;
res = ioctl(fd, bdcms[j].ioc, &llarg);
break;
case ARGLU:
lu = bdcms[j].argval;
res = ioctl(fd, bdcms[j].ioc, &lu);
break;
case ARGLLU:
llu = bdcms[j].argval;
res = ioctl(fd, bdcms[j].ioc, &llu);
break;
}
if (res == -1) {
perror(bdcms[j].iocname);
if (verbose)
printf(_("%s failed.\n"), _(bdcms[j].help));
exit(1);
}
switch(bdcms[j].argtype) {
case ARGINTG:
if (verbose)
printf("%s: %d\n", _(bdcms[j].help), iarg);
else
printf("%d\n", iarg);
break;
case ARGLINTG:
if (verbose)
printf("%s: %ld\n", _(bdcms[j].help), larg);
else
printf("%ld\n", larg);
break;
case ARGLLINTG:
if (verbose)
printf("%s: %lld\n", _(bdcms[j].help), llarg);
else
printf("%lld\n", llarg);
break;
case ARGLU:
if (verbose)
printf("%s: %lu\n", _(bdcms[j].help), lu);
else
printf("%lu\n", lu);
break;
case ARGLLU:
if (verbose)
printf("%s: %llu\n", _(bdcms[j].help), llu);
else
printf("%llu\n", llu);
break;
default:
if (verbose)
printf(_("%s succeeded.\n"), _(bdcms[j].help));
break;
}
}
}
#define PROC_PARTITIONS "/proc/partitions"
void
report_all_devices(void) {
FILE *procpt;
char line[200];
char ptname[200];
char device[210];
int ma, mi, sz;
procpt = fopen(PROC_PARTITIONS, "r");
if (!procpt) {
fprintf(stderr, _("%s: cannot open %s\n"),
progname, PROC_PARTITIONS);
exit(1);
}
while (fgets(line, sizeof(line), procpt)) {
if (sscanf (line, " %d %d %d %[^\n ]",
&ma, &mi, &sz, ptname) != 4)
continue;
sprintf(device, "/dev/%s", ptname);
report_device(device, 1);
}
fclose(procpt);
}
void
report_device(char *device, int quiet) {
int fd;
int ro, ssz, bsz;
long ra;
unsigned long long bytes;
struct hd_geometry g;
fd = open(device, O_RDONLY | O_NONBLOCK);
if (fd < 0) {
if (!quiet)
fprintf(stderr, _("%s: cannot open %s\n"),
progname, device);
return;
}
ro = ssz = bsz = 0;
g.start = ra = 0;
if (ioctl (fd, BLKROGET, &ro) == 0 &&
ioctl (fd, BLKRAGET, &ra) == 0 &&
ioctl (fd, BLKSSZGET, &ssz) == 0 &&
ioctl (fd, BLKBSZGET, &bsz) == 0 &&
ioctl (fd, HDIO_GETGEO, &g) == 0 &&
blkdev_get_size (fd, &bytes) == 0) {
printf("%s %5ld %5d %5d %10ld %15lld %s\n",
ro ? "ro" : "rw", ra, ssz, bsz, g.start, bytes, device);
} else {
if (!quiet)
fprintf(stderr, _("%s: ioctl error on %s\n"),
progname, device);
}
close(fd);
}
void
report_header() {
printf(_("RO RA SSZ BSZ StartSec Size Device\n"));
}
|
