Mercurial > xfs_ino_scan

comparison ino_scan.c @ 12:bce7ecd3523c

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make copying data conditional
author Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
date Sat, 22 Mar 2008 18:08:53 -0400
parents 3bf4a4f40d43
children 93863bd2be09
comparison
equal deleted inserted replaced
11:3bf4a4f40d43 12:bce7ecd3523c
25 #define DUMPDIR "dump" 25 #define DUMPDIR "dump"
26 #define BLKSIZE 4096 26 #define BLKSIZE 4096
27 #define BLKDEV_SIZE (104857600 / BLKSIZE) 27 #define BLKDEV_SIZE (104857600 / BLKSIZE)
28 #define INOSIZE 256 28 #define INOSIZE 256
29 29
30 /*
31 * Should inode data be copied off the device into DUMPDIR?
32 *
33 * defined: yes
34 * undefined: no
35 */
36 //#define COPY_DATA
37
30 int fd; /* device fd */ 38 int fd; /* device fd */
31 int ffd = 0; /* file fd */ 39 int ffd = 0; /* file fd */
32 40
33 static inline __uint16_t swap16(__uint16_t in) 41 static inline __uint16_t swap16(__uint16_t in)
34 { 42 {
89 irec->br_blockcount = (tmp) & 0x1fffffULL; 97 irec->br_blockcount = (tmp) & 0x1fffffULL;
90 } 98 }
91 99
92 void copy_extent_data(struct xfs_bmbt_irec *irec) 100 void copy_extent_data(struct xfs_bmbt_irec *irec)
93 { 101 {
102 #ifdef COPY_DATA
94 char buf[BLKSIZE]; 103 char buf[BLKSIZE];
95 int ret; 104 int ret;
96 int i; 105 int i;
97 106
98 for(i=0; i<irec->br_blockcount; i++) { 107 for(i=0; i<irec->br_blockcount; i++) {
102 111
103 ret = pwrite64(ffd, buf, BLKSIZE, (irec->br_startoff + i) * BLKSIZE); 112 ret = pwrite64(ffd, buf, BLKSIZE, (irec->br_startoff + i) * BLKSIZE);
104 if (ret == -1) 113 if (ret == -1)
105 die(); 114 die();
106 } 115 }
116 #endif
107 } 117 }
108 118
109 void process_reclist(xfs_bmbt_rec_t *rec, __uint32_t nexts) 119 void process_reclist(xfs_bmbt_rec_t *rec, __uint32_t nexts)
110 { 120 {
111 struct xfs_bmbt_irec irec; 121 struct xfs_bmbt_irec irec;
217 } 227 }
218 } 228 }
219 229
220 void print_inode(off_t blk) 230 void print_inode(off_t blk)
221 { 231 {
232 #ifdef COPY_DATA
222 char fname[PATH_MAX]; 233 char fname[PATH_MAX];
234 #endif
223 unsigned char buf[INOSIZE]; 235 unsigned char buf[INOSIZE];
224 struct xfs_dinode *inode = (void*) buf; 236 struct xfs_dinode *inode = (void*) buf;
225 off_t off; 237 off_t off;
226 int ret; 238 int ret;
227 239
234 return; 246 return;
235 } 247 }
236 248
237 printf("Inode @ block %lu, inode within blk %lu\n", blk, off); 249 printf("Inode @ block %lu, inode within blk %lu\n", blk, off);
238 250
251 #ifdef COPY_DATA
239 if (swap16(inode->di_core.di_mode) & S_IFREG) { 252 if (swap16(inode->di_core.di_mode) & S_IFREG) {
240 snprintf(fname, PATH_MAX, "%s/%08lx-%08lx", DUMPDIR, blk, off); 253 snprintf(fname, PATH_MAX, "%s/%08lx-%08lx", DUMPDIR, blk, off);
241 ffd = open(fname, O_CREAT | O_LARGEFILE | O_WRONLY, swap16(inode->di_core.di_mode) & 0777); 254 ffd = open(fname, O_CREAT | O_LARGEFILE | O_WRONLY, swap16(inode->di_core.di_mode) & 0777);
242 if (ffd == -1) 255 if (ffd == -1)
243 die(); 256 die();
244 } 257 }
258 #endif
245 259
246 do_print_inode(inode); 260 do_print_inode(inode);
247 261
262 #ifdef COPY_DATA
248 if (swap16(inode->di_core.di_mode) & S_IFREG) { 263 if (swap16(inode->di_core.di_mode) & S_IFREG) {
249 ret = ftruncate(ffd, swap64(inode->di_core.di_size)); 264 ret = ftruncate(ffd, swap64(inode->di_core.di_size));
250 if (ret == -1) 265 if (ret == -1)
251 die(); 266 die();
252 267
253 ret = close(ffd); 268 ret = close(ffd);
254 if (ret == -1) 269 if (ret == -1)
255 die(); 270 die();
256 ffd = 0; 271 ffd = 0;
257 } 272 }
273 #endif
258 } 274 }
259 } 275 }
260 276
261 int main(int argc, char **argv) 277 int main(int argc, char **argv)
262 { 278 {