1 /*
2 * test_icount.c
3 *
4 * Copyright (C) 1997 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
12 #include "config.h"
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include <unistd.h>
17 #ifdef HAVE_GETOPT_H
18 #include <getopt.h>
19 #endif
20 #include <fcntl.h>
21
22 #include <ext2fs/ext2_fs.h>
23
24 #include <et/com_err.h>
25 #include <ss/ss.h>
26 #include <ext2fs/ext2fs.h>
27 #include <ext2fs/irel.h>
28 #include <ext2fs/brel.h>
29
30 extern ss_request_table test_cmds;
31
32 #include "test_icount.h"
33
34 ext2_filsys test_fs;
35 ext2_icount_t test_icount;
36
37 /*
38 * Helper function which assures that the icount structure is valid
39 */
check_icount(char * request)40 static int check_icount(char *request)
41 {
42 if (test_icount)
43 return 0;
44 com_err(request, 0, "The icount structure must be allocated.");
45 return 1;
46 }
47
48 /*
49 * Helper function which parses an inode number.
50 */
parse_inode(const char * request,const char * desc,const char * str,ext2_ino_t * ino)51 static int parse_inode(const char *request, const char *desc,
52 const char *str, ext2_ino_t *ino)
53 {
54 char *tmp;
55
56 *ino = strtoul(str, &tmp, 0);
57 if (*tmp) {
58 com_err(request, 0, "Bad %s - %s", desc, str);
59 return 1;
60 }
61 return 0;
62 }
63
do_create_icount(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))64 void do_create_icount(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
65 void *infop EXT2FS_ATTR((unused)))
66 {
67 errcode_t retval;
68 char *progname;
69 int flags = 0;
70 ext2_ino_t size = 5;
71
72 progname = *argv;
73 argv++; argc --;
74
75 if (argc && !strcmp("-i", *argv)) {
76 flags |= EXT2_ICOUNT_OPT_INCREMENT;
77 argv++; argc--;
78 }
79 if (argc) {
80 if (parse_inode(progname, "icount size", argv[0], &size))
81 return;
82 argv++; argc--;
83 }
84 #if 0
85 printf("Creating icount... flags=%d, size=%d\n", flags, (int) size);
86 #endif
87 retval = ext2fs_create_icount(test_fs, flags, (int) size,
88 &test_icount);
89 if (retval) {
90 com_err(progname, retval, "while creating icount");
91 return;
92 }
93 }
94
do_free_icount(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))95 void do_free_icount(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
96 void *infop EXT2FS_ATTR((unused)))
97 {
98 if (argc != 1) {
99 printf("Usage: free_icount\n");
100 return;
101 }
102 if (check_icount(argv[0]))
103 return;
104
105 ext2fs_free_icount(test_icount);
106 test_icount = 0;
107 }
108
do_fetch(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))109 void do_fetch(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
110 void *infop EXT2FS_ATTR((unused)))
111 {
112 errcode_t retval;
113 ext2_ino_t ino;
114 __u16 count;
115
116 if (argc < 2) {
117 printf("usage: %s inode\n", argv[0]);
118 return;
119 }
120 if (check_icount(argv[0]))
121 return;
122 if (parse_inode(argv[0], "inode", argv[1], &ino))
123 return;
124 retval = ext2fs_icount_fetch(test_icount, ino, &count);
125 if (retval) {
126 com_err(argv[0], retval, "while calling ext2fs_icount_fetch");
127 return;
128 }
129 printf("Count is %u\n", count);
130 }
131
do_increment(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))132 void do_increment(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
133 void *infop EXT2FS_ATTR((unused)))
134 {
135 errcode_t retval;
136 ext2_ino_t ino;
137 __u16 count;
138
139 if (argc < 2) {
140 printf("usage: %s inode\n", argv[0]);
141 return;
142 }
143 if (check_icount(argv[0]))
144 return;
145 if (parse_inode(argv[0], "inode", argv[1], &ino))
146 return;
147 retval = ext2fs_icount_increment(test_icount, ino, &count);
148 if (retval) {
149 com_err(argv[0], retval,
150 "while calling ext2fs_icount_increment");
151 return;
152 }
153 printf("Count is now %u\n", count);
154 }
155
do_decrement(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))156 void do_decrement(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
157 void *infop EXT2FS_ATTR((unused)))
158 {
159 errcode_t retval;
160 ext2_ino_t ino;
161 __u16 count;
162
163 if (argc < 2) {
164 printf("usage: %s inode\n", argv[0]);
165 return;
166 }
167 if (check_icount(argv[0]))
168 return;
169 if (parse_inode(argv[0], "inode", argv[1], &ino))
170 return;
171 retval = ext2fs_icount_decrement(test_icount, ino, &count);
172 if (retval) {
173 com_err(argv[0], retval,
174 "while calling ext2fs_icount_decrement");
175 return;
176 }
177 printf("Count is now %u\n", count);
178 }
179
do_store(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))180 void do_store(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
181 void *infop EXT2FS_ATTR((unused)))
182 {
183 errcode_t retval;
184 ext2_ino_t ino;
185 ext2_ino_t count;
186
187 if (argc < 3) {
188 printf("usage: %s inode count\n", argv[0]);
189 return;
190 }
191 if (check_icount(argv[0]))
192 return;
193 if (parse_inode(argv[0], "inode", argv[1], &ino))
194 return;
195 if (parse_inode(argv[0], "count", argv[2], &count))
196 return;
197 if (count > 65535) {
198 printf("Count too large.\n");
199 return;
200 }
201 retval = ext2fs_icount_store(test_icount, ino, (__u16) count);
202 if (retval) {
203 com_err(argv[0], retval,
204 "while calling ext2fs_icount_store");
205 return;
206 }
207 }
208
do_dump(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))209 void do_dump(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
210 void *infop EXT2FS_ATTR((unused)))
211 {
212 errcode_t retval;
213 ext2_ino_t i;
214 __u16 count;
215
216 if (argc != 1) {
217 printf("Usage: dump\n");
218 return;
219 }
220 if (check_icount(argv[0]))
221 return;
222 for (i=1; i <= test_fs->super->s_inodes_count; i++) {
223 retval = ext2fs_icount_fetch(test_icount, i, &count);
224 if (retval) {
225 com_err(argv[0], retval,
226 "while fetching icount for %lu", (unsigned long)i);
227 return;
228 }
229 if (count)
230 printf("%lu: %u\n", (unsigned long)i, count);
231 }
232 }
233
do_validate(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))234 void do_validate(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
235 void *infop EXT2FS_ATTR((unused)))
236 {
237 errcode_t retval;
238
239 if (argc != 1) {
240 printf("Usage: validate\n");
241 return;
242 }
243 if (check_icount(argv[0]))
244 return;
245 retval = ext2fs_icount_validate(test_icount, stdout);
246 if (retval) {
247 com_err(argv[0], retval, "while validating icount structure");
248 return;
249 }
250 printf("Icount structure successfully validated\n");
251 }
252
do_get_size(int argc,char ** argv,int sci_idx EXT2FS_ATTR ((unused)),void * infop EXT2FS_ATTR ((unused)))253 void do_get_size(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
254 void *infop EXT2FS_ATTR((unused)))
255 {
256 ext2_ino_t size;
257
258 if (argc != 1) {
259 printf("Usage: get_size\n");
260 return;
261 }
262 if (check_icount(argv[0]))
263 return;
264 size = ext2fs_get_icount_size(test_icount);
265 printf("Size of icount is: %lu\n", (unsigned long)size);
266 }
267
source_file(const char * cmd_file,int sci_idx)268 static int source_file(const char *cmd_file, int sci_idx)
269 {
270 FILE *f;
271 char buf[256];
272 char *cp;
273 int exit_status = 0;
274 int retval;
275 int noecho;
276
277 if (strcmp(cmd_file, "-") == 0)
278 f = stdin;
279 else {
280 f = fopen(cmd_file, "r");
281 if (!f) {
282 perror(cmd_file);
283 exit(1);
284 }
285 }
286 fflush(stdout);
287 fflush(stderr);
288 setbuf(stdout, NULL);
289 setbuf(stderr, NULL);
290 while (!feof(f)) {
291 if (fgets(buf, sizeof(buf), f) == NULL)
292 break;
293 if (buf[0] == '#')
294 continue;
295 noecho = 0;
296 if (buf[0] == '-') {
297 noecho = 1;
298 buf[0] = ' ';
299 }
300 cp = strchr(buf, '\n');
301 if (cp)
302 *cp = 0;
303 cp = strchr(buf, '\r');
304 if (cp)
305 *cp = 0;
306 if (!noecho)
307 printf("test_icount: %s\n", buf);
308 retval = ss_execute_line(sci_idx, buf);
309 if (retval) {
310 ss_perror(sci_idx, retval, buf);
311 exit_status++;
312 }
313 }
314 if (f != stdin)
315 fclose(f);
316 return exit_status;
317 }
318
main(int argc,char ** argv)319 int main(int argc, char **argv)
320 {
321 int retval;
322 int sci_idx;
323 int c;
324 char *request = 0;
325 int exit_status = 0;
326 char *cmd_file = 0;
327 struct ext2_super_block param;
328
329 initialize_ext2_error_table();
330
331 /*
332 * Create a sample filesystem structure
333 */
334 memset(¶m, 0, sizeof(struct ext2_super_block));
335 ext2fs_blocks_count_set(¶m, 80000);
336 param.s_inodes_count = 20000;
337 retval = ext2fs_initialize("/dev/null", 0, ¶m,
338 unix_io_manager, &test_fs);
339 if (retval) {
340 com_err("/dev/null", retval, "while setting up test fs");
341 exit(1);
342 }
343
344 while ((c = getopt (argc, argv, "wR:f:")) != EOF) {
345 switch (c) {
346 case 'R':
347 request = optarg;
348 break;
349 case 'f':
350 cmd_file = optarg;
351 break;
352 default:
353 com_err(argv[0], 0, "Usage: test_icount "
354 "[-R request] [-f cmd_file]");
355 exit(1);
356 }
357 }
358 sci_idx = ss_create_invocation("test_icount", "0.0", (char *) NULL,
359 &test_cmds, &retval);
360 if (retval) {
361 ss_perror(sci_idx, retval, "creating invocation");
362 exit(1);
363 }
364
365 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
366 if (retval) {
367 ss_perror(sci_idx, retval, "adding standard requests");
368 exit (1);
369 }
370 if (request) {
371 retval = 0;
372 retval = ss_execute_line(sci_idx, request);
373 if (retval) {
374 ss_perror(sci_idx, retval, request);
375 exit_status++;
376 }
377 } else if (cmd_file) {
378 exit_status = source_file(cmd_file, sci_idx);
379 } else {
380 ss_listen(sci_idx);
381 }
382
383 return(exit_status);
384 }
385