1 /* $NetBSD: fsdbutil.c,v 1.2 1995/10/08 23:18:12 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995 John T. Kohl 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD: src/sbin/fsdb/fsdbutil.c,v 1.9.2.2 2002/03/20 13:39:02 joerg Exp $ 31 */ 32 33 #include <sys/param.h> 34 #include <ctype.h> 35 #include <err.h> 36 #include <grp.h> 37 #include <pwd.h> 38 #include <string.h> 39 #include <time.h> 40 41 #include <vfs/ufs/dinode.h> 42 #include <vfs/ufs/fs.h> 43 44 #include <sys/ioctl.h> 45 46 #include "fsdb.h" 47 #include "fsck.h" 48 49 static int charsperline(void); 50 static int printindir(ufs_daddr_t blk, int level, char *bufp); 51 static void printblocks(ino_t inum, struct ufs1_dinode *dp); 52 53 char ** 54 crack(char *line, int *argc) 55 { 56 static char *argv[8]; 57 int i; 58 char *p, *val; 59 for (p = line, i = 0; p != NULL && i < 8; i++) { 60 while ((val = strsep(&p, " \t\n")) != NULL && *val == '\0') 61 /**/; 62 if (val) 63 argv[i] = val; 64 else 65 break; 66 } 67 *argc = i; 68 return argv; 69 } 70 71 int 72 argcount(struct cmdtable *cmdp, int argc, char **argv) 73 { 74 if (cmdp->minargc == cmdp->maxargc) 75 warnx("command `%s' takes %u arguments", cmdp->cmd, cmdp->minargc-1); 76 else 77 warnx("command `%s' takes from %u to %u arguments", 78 cmdp->cmd, cmdp->minargc-1, cmdp->maxargc-1); 79 80 warnx("usage: %s: %s", cmdp->cmd, cmdp->helptxt); 81 return 1; 82 } 83 84 void 85 printstat(const char *cp, ino_t inum, struct ufs1_dinode *dp) 86 { 87 struct group *grp; 88 struct passwd *pw; 89 char *p; 90 time_t t; 91 92 printf("%s: ", cp); 93 switch (dp->di_mode & IFMT) { 94 case IFDIR: 95 puts("directory"); 96 break; 97 case IFREG: 98 puts("regular file"); 99 break; 100 case IFBLK: 101 printf("block special (%d,%d)", 102 major(dp->di_rdev), minor(dp->di_rdev)); 103 break; 104 case IFCHR: 105 printf("character special (%d,%d)", 106 major(dp->di_rdev), minor(dp->di_rdev)); 107 break; 108 case IFLNK: 109 fputs("symlink",stdout); 110 if (dp->di_size > 0 && dp->di_size < UFS1_MAXSYMLINKLEN && 111 dp->di_blocks == 0) 112 printf(" to `%.*s'\n", (int) dp->di_size, (char *)dp->di_shortlink); 113 else 114 putchar('\n'); 115 break; 116 case IFSOCK: 117 puts("socket"); 118 break; 119 case IFIFO: 120 puts("fifo"); 121 break; 122 } 123 printf("I=%ju MODE=%o SIZE=%ju", (uintmax_t)inum, dp->di_mode, 124 (uintmax_t)dp->di_size); 125 t = dp->di_mtime; 126 p = ctime(&t); 127 printf("\n\tMTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20], 128 dp->di_mtimensec); 129 t = dp->di_ctime; 130 p = ctime(&t); 131 printf("\n\tCTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20], 132 dp->di_ctimensec); 133 t = dp->di_atime; 134 p = ctime(&t); 135 printf("\n\tATIME=%15.15s %4.4s [%d nsec]\n", &p[4], &p[20], 136 dp->di_atimensec); 137 138 if ((pw = getpwuid(dp->di_uid))) 139 printf("OWNER=%s ", pw->pw_name); 140 else 141 printf("OWNUID=%u ", dp->di_uid); 142 if ((grp = getgrgid(dp->di_gid))) 143 printf("GRP=%s ", grp->gr_name); 144 else 145 printf("GID=%u ", dp->di_gid); 146 147 printf("LINKCNT=%hd FLAGS=%#x BLKCNT=%x GEN=%x\n", dp->di_nlink, dp->di_flags, 148 dp->di_blocks, dp->di_gen); 149 } 150 151 152 /* 153 * Determine the number of characters in a 154 * single line. 155 */ 156 157 static int 158 charsperline(void) 159 { 160 int columns; 161 char *cp; 162 struct winsize ws; 163 164 columns = 0; 165 if (ioctl(0, TIOCGWINSZ, &ws) != -1) 166 columns = ws.ws_col; 167 if (columns == 0 && (cp = getenv("COLUMNS"))) 168 columns = atoi(cp); 169 if (columns == 0) 170 columns = 80; /* last resort */ 171 return (columns); 172 } 173 174 175 /* 176 * Recursively print a list of indirect blocks. 177 */ 178 static int 179 printindir(ufs_daddr_t blk, int level, char *bufp) 180 { 181 struct bufarea buf, *bp; 182 char tempbuf[32]; /* enough to print an ufs_daddr_t */ 183 int i, j, cpl, charssofar; 184 ufs_daddr_t blkno; 185 186 if (level == 0) { 187 /* for the final indirect level, don't use the cache */ 188 bp = &buf; 189 bp->b_un.b_buf = bufp; 190 bp->b_prev = bp->b_next = bp; 191 initbarea(bp); 192 193 getblk(bp, blk, sblock.fs_bsize); 194 } else 195 bp = getdatablk(blk, sblock.fs_bsize); 196 197 cpl = charsperline(); 198 for (i = charssofar = 0; i < NINDIR(&sblock); i++) { 199 blkno = bp->b_un.b_indir[i]; 200 if (blkno == 0) { 201 if (level == 0) 202 putchar('\n'); 203 return 0; 204 } 205 j = sprintf(tempbuf, "%d", blkno); 206 if (level == 0) { 207 charssofar += j; 208 if (charssofar >= cpl - 2) { 209 putchar('\n'); 210 charssofar = j; 211 } 212 } 213 fputs(tempbuf, stdout); 214 if (level == 0) { 215 printf(", "); 216 charssofar += 2; 217 } else { 218 printf(" =>\n"); 219 if (printindir(blkno, level - 1, bufp) == 0) 220 return 0; 221 } 222 } 223 if (level == 0) 224 putchar('\n'); 225 return 1; 226 } 227 228 229 /* 230 * Print the block pointers for one inode. 231 */ 232 static void 233 printblocks(ino_t inum, struct ufs1_dinode *dp) 234 { 235 char *bufp; 236 int i, nfrags; 237 long ndb, offset; 238 239 printf("Blocks for inode %ju:\n", (uintmax_t)inum); 240 printf("Direct blocks:\n"); 241 ndb = howmany(dp->di_size, sblock.fs_bsize); 242 for (i = 0; i < UFS_NDADDR; i++) { 243 if (dp->di_db[i] == 0) { 244 putchar('\n'); 245 return; 246 } 247 if (i > 0) 248 printf(", "); 249 printf("%d", dp->di_db[i]); 250 if (--ndb == 0 && (offset = blkoff(&sblock, dp->di_size)) != 0) { 251 nfrags = numfrags(&sblock, fragroundup(&sblock, offset)); 252 printf(" (%d frag%s)", nfrags, nfrags > 1? "s": ""); 253 } 254 } 255 putchar('\n'); 256 if (dp->di_ib[0] == 0) 257 return; 258 259 bufp = malloc((unsigned int)sblock.fs_bsize); 260 if (bufp == NULL) 261 errx(EEXIT, "cannot allocate indirect block buffer"); 262 printf("Indirect blocks:\n"); 263 for (i = 0; i < UFS_NIADDR; i++) 264 if (printindir(dp->di_ib[i], i, bufp) == 0) 265 break; 266 free(bufp); 267 } 268 269 270 int 271 checkactive(void) 272 { 273 if (!curinode) { 274 warnx("no current inode\n"); 275 return 0; 276 } 277 return 1; 278 } 279 280 int 281 checkactivedir(void) 282 { 283 if (!curinode) { 284 warnx("no current inode\n"); 285 return 0; 286 } 287 if ((curinode->di_mode & IFMT) != IFDIR) { 288 warnx("inode %ju not a directory", (uintmax_t)curinum); 289 return 0; 290 } 291 return 1; 292 } 293 294 int 295 printactive(int doblocks) 296 { 297 if (!checkactive()) 298 return 1; 299 switch (curinode->di_mode & IFMT) { 300 case IFDIR: 301 case IFREG: 302 case IFBLK: 303 case IFCHR: 304 case IFLNK: 305 case IFSOCK: 306 case IFIFO: 307 if (doblocks) 308 printblocks(curinum, curinode); 309 else 310 printstat("current inode", curinum, curinode); 311 break; 312 case 0: 313 printf("current inode %ju: unallocated inode\n", (uintmax_t)curinum); 314 break; 315 default: 316 printf("current inode %ju: screwy itype 0%o (mode 0%o)?\n", 317 (uintmax_t)curinum, curinode->di_mode & IFMT, curinode->di_mode); 318 break; 319 } 320 return 0; 321 } 322