usr.sbin/mtree/create.c

   1 /*      $NetBSD: create.c,v 1.72 2013/10/17 17:22:59 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if defined(__RCSID) && !defined(lint)
  38 #if 0
  39 static char sccsid[] = "@(#)create.c    8.1 (Berkeley) 6/6/93";
  40 #else
  41 __RCSID("$NetBSD: create.c,v 1.72 2013/10/17 17:22:59 christos Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <sys/param.h>
  46 #include <sys/stat.h>
  47
  48 #if ! HAVE_NBTOOL_CONFIG_H
  49 #include <dirent.h>
  50 #endif
  51
  52 #include <errno.h>
  53 #include <fcntl.h>
  54 #include <grp.h>
  55 #include <pwd.h>
  56 #include <stdio.h>
  57 #include <stdarg.h>
  58 #include <stdint.h>
  59 #include <stdlib.h>
  60 #include <string.h>
  61 #include <time.h>
  62 #include <unistd.h>
  63
  64 #ifndef NO_MD5
  65 #include <md5.h>
  66 #endif
  67 #ifndef NO_RMD160
  68 #include <rmd160.h>
  69 #endif
  70 #ifndef NO_SHA1
  71 #include <sha1.h>
  72 #endif
  73 #ifndef NO_SHA2
  74 #include <sha2.h>
  75 #endif
  76
  77 #include "extern.h"
  78
  79 #define INDENTNAMELEN   15
  80 #define MAXLINELEN      80
  81
  82 static gid_t gid;
  83 static uid_t uid;
  84 static mode_t mode;
  85 static u_long flags;
  86
  87 #ifdef __FreeBSD__
  88 #define FTS_CONST const
  89 #else
  90 #define FTS_CONST
  91 #endif
  92
  93 static int      dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
  94 static void     output(int, int *, const char *, ...)
  95         __attribute__((__format__(__printf__, 3, 4)));
  96 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
  97 static void     statf(int, FTSENT *);
  98
  99 void
 100 cwalk(void)
 101 {
 102         FTS *t;
 103         FTSENT *p;
 104         time_t clocktime;
 105         char host[MAXHOSTNAMELEN + 1];
 106         const char *user;
 107         char *argv[2];
 108         char  dot[] = ".";
 109         int indent = 0;
 110
 111         argv[0] = dot;
 112         argv[1] = NULL;
 113
 114         time(&clocktime);
 115         gethostname(host, sizeof(host));
 116         host[sizeof(host) - 1] = '\0';
 117         if ((user = getlogin()) == NULL) {
 118                 struct passwd *pw;
 119                 user = (pw = getpwuid(getuid())) == NULL ? pw->pw_name :
 120                     "<unknown>";
 121         }
 122
 123         if (!nflag)
 124                 printf(
 125                     "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n"
 126                     "#\t   date: %s",
 127                     user, host, fullpath, ctime(&clocktime));
 128
 129         if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
 130                 mtree_err("fts_open: %s", strerror(errno));
 131         while ((p = fts_read(t)) != NULL) {
 132                 if (jflag)
 133                         indent = p->fts_level * 4;
 134                 if (check_excludes(p->fts_name, p->fts_path)) {
 135                         fts_set(t, p, FTS_SKIP);
 136                         continue;
 137                 }
 138                 if (!find_only(p->fts_path)) {
 139                         fts_set(t, p, FTS_SKIP);
 140                         continue;
 141                 }
 142                 switch(p->fts_info) {
 143                 case FTS_D:
 144                         if (!bflag)
 145                                 printf("\n");
 146                         if (!nflag)
 147                                 printf("# %s\n", p->fts_path);
 148                         statd(t, p, &uid, &gid, &mode, &flags);
 149                         statf(indent, p);
 150                         break;
 151                 case FTS_DP:
 152                         if (p->fts_level > 0)
 153                                 if (!nflag)
 154                                         printf("%*s# %s\n", indent, "",
 155                                             p->fts_path);
 156                         if (p->fts_level > 0 || flavor == F_FREEBSD9) {
 157                                 printf("%*s..\n", indent, "");
 158                                 if (!bflag)
 159                                         printf("\n");
 160                         }
 161                         break;
 162                 case FTS_DNR:
 163                 case FTS_ERR:
 164                 case FTS_NS:
 165                         mtree_err("%s: %s",
 166                             p->fts_path, strerror(p->fts_errno));
 167                         break;
 168                 default:
 169                         if (!dflag)
 170                                 statf(indent, p);
 171                         break;
 172
 173                 }
 174         }
 175         fts_close(t);
 176         if (sflag && keys & F_CKSUM)
 177                 mtree_err("%s checksum: %u", fullpath, crc_total);
 178 }
 179
 180 static void
 181 statf(int indent, FTSENT *p)
 182 {
 183         u_int32_t len, val;
 184         int fd, offset;
 185         const char *name = NULL;
 186 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
 187         char *digestbuf;
 188 #endif
 189
 190         offset = printf("%*s%s%s", indent, "",
 191             S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
 192
 193         if (offset > (INDENTNAMELEN + indent))
 194                 offset = MAXLINELEN;
 195         else
 196                 offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
 197
 198         if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
 199                 output(indent, &offset, "type=%s",
 200                     inotype(p->fts_statp->st_mode));
 201         if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
 202                 if (keys & F_UNAME &&
 203                     (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
 204                         output(indent, &offset, "uname=%s", name);
 205                 if (keys & F_UID || (keys & F_UNAME && name == NULL))
 206                         output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
 207         }
 208         if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
 209                 if (keys & F_GNAME &&
 210                     (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
 211                         output(indent, &offset, "gname=%s", name);
 212                 if (keys & F_GID || (keys & F_GNAME && name == NULL))
 213                         output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
 214         }
 215         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 216                 output(indent, &offset, "mode=%#o",
 217                     p->fts_statp->st_mode & MBITS);
 218         if (keys & F_DEV &&
 219             (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
 220                 output(indent, &offset, "device=%#jx",
 221                     (uintmax_t)p->fts_statp->st_rdev);
 222         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 223                 output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
 224         if (keys & F_SIZE &&
 225             (flavor == F_FREEBSD9 || S_ISREG(p->fts_statp->st_mode)))
 226                 output(indent, &offset, "size=%ju",
 227                     (uintmax_t)p->fts_statp->st_size);
 228         if (keys & F_TIME)
 229 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
 230                 output(indent, &offset, "time=%jd.%09ld",
 231                     (intmax_t)p->fts_statp->st_mtimespec.tv_sec,
 232                     p->fts_statp->st_mtimespec.tv_nsec);
 233 #else
 234                 output(indent, &offset, "time=%jd.%09ld",
 235                     (intmax_t)p->fts_statp->st_mtime, (long)0);
 236 #endif
 237         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 238                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 239                     crc(fd, &val, &len))
 240                         mtree_err("%s: %s", p->fts_accpath, strerror(errno));
 241                 close(fd);
 242                 output(indent, &offset, "cksum=%lu", (long)val);
 243         }
 244 #ifndef NO_MD5
 245         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 246                 if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
 247                         mtree_err("%s: MD5File failed: %s", p->fts_accpath,
 248                             strerror(errno));
 249                 output(indent, &offset, "%s=%s", MD5KEY, digestbuf);
 250                 free(digestbuf);
 251         }
 252 #endif  /* ! NO_MD5 */
 253 #ifndef NO_RMD160
 254         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 255                 if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
 256                         mtree_err("%s: RMD160File failed: %s", p->fts_accpath,
 257                             strerror(errno));
 258                 output(indent, &offset, "%s=%s", RMD160KEY, digestbuf);
 259                 free(digestbuf);
 260         }
 261 #endif  /* ! NO_RMD160 */
 262 #ifndef NO_SHA1
 263         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 264                 if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
 265                         mtree_err("%s: SHA1File failed: %s", p->fts_accpath,
 266                             strerror(errno));
 267                 output(indent, &offset, "%s=%s", SHA1KEY, digestbuf);
 268                 free(digestbuf);
 269         }
 270 #endif  /* ! NO_SHA1 */
 271 #ifndef NO_SHA2
 272         if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
 273                 if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
 274                         mtree_err("%s: SHA256_File failed: %s", p->fts_accpath,
 275                             strerror(errno));
 276                 output(indent, &offset, "%s=%s", SHA256KEY, digestbuf);
 277                 free(digestbuf);
 278         }
 279 #ifdef SHA384_BLOCK_LENGTH
 280         if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
 281                 if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
 282                         mtree_err("%s: SHA384_File failed: %s", p->fts_accpath,
 283                             strerror(errno));
 284                 output(indent, &offset, "%s=%s", SHA384KEY, digestbuf);
 285                 free(digestbuf);
 286         }
 287 #endif
 288         if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
 289                 if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
 290                         mtree_err("%s: SHA512_File failed: %s", p->fts_accpath,
 291                             strerror(errno));
 292                 output(indent, &offset, "%s=%s", SHA512KEY, digestbuf);
 293                 free(digestbuf);
 294         }
 295 #endif  /* ! NO_SHA2 */
 296         if (keys & F_SLINK &&
 297             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 298                 output(indent, &offset, "link=%s",
 299                     vispath(rlink(p->fts_accpath)));
 300 #if HAVE_STRUCT_STAT_ST_FLAGS
 301         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 302                 char *str = flags_to_string(p->fts_statp->st_flags, "none");
 303                 output(indent, &offset, "flags=%s", str);
 304                 free(str);
 305         }
 306 #endif
 307         putchar('\n');
 308 }
 309
 310 /* XXX
 311  * FLAGS2INDEX will fail once the user and system settable bits need more
 312  * than one byte, respectively.
 313  */
 314 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
 315
 316 #define MTREE_MAXGID    5000
 317 #define MTREE_MAXUID    5000
 318 #define MTREE_MAXMODE   (MBITS + 1)
 319 #if HAVE_STRUCT_STAT_ST_FLAGS
 320 #define MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
 321 #else
 322 #define MTREE_MAXFLAGS  1
 323 #endif
 324 #define MTREE_MAXS 16
 325
 326 static int
 327 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 328       u_long *pflags)
 329 {
 330         FTSENT *p;
 331         gid_t sgid;
 332         uid_t suid;
 333         mode_t smode;
 334 #if HAVE_STRUCT_STAT_ST_FLAGS
 335         u_long sflags = 0;
 336 #endif
 337         const char *name = NULL;
 338         gid_t savegid;
 339         uid_t saveuid;
 340         mode_t savemode;
 341         u_long saveflags;
 342         u_short maxgid, maxuid, maxmode, maxflags;
 343         u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
 344                 m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
 345         static int first = 1;
 346
 347         savegid = *pgid;
 348         saveuid = *puid;
 349         savemode = *pmode;
 350         saveflags = *pflags;
 351         if ((p = fts_children(t, 0)) == NULL) {
 352                 if (errno)
 353                         mtree_err("%s: %s", RP(parent), strerror(errno));
 354                 return (1);
 355         }
 356
 357         memset(g, 0, sizeof(g));
 358         memset(u, 0, sizeof(u));
 359         memset(m, 0, sizeof(m));
 360         memset(f, 0, sizeof(f));
 361
 362         maxuid = maxgid = maxmode = maxflags = 0;
 363         for (; p; p = p->fts_link) {
 364                 if (flavor == F_NETBSD6 || !dflag ||
 365                     (dflag && S_ISDIR(p->fts_statp->st_mode))) {
 366                         smode = p->fts_statp->st_mode & MBITS;
 367                         if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
 368                                 savemode = smode;
 369                                 maxmode = m[smode];
 370                         }
 371                         sgid = p->fts_statp->st_gid;
 372                         if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
 373                                 savegid = sgid;
 374                                 maxgid = g[sgid];
 375                         }
 376                         suid = p->fts_statp->st_uid;
 377                         if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
 378                                 saveuid = suid;
 379                                 maxuid = u[suid];
 380                         }
 381
 382 #if HAVE_STRUCT_STAT_ST_FLAGS
 383                         sflags = FLAGS2INDEX(p->fts_statp->st_flags);
 384                         if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
 385                                 saveflags = p->fts_statp->st_flags;
 386                                 maxflags = f[sflags];
 387                         }
 388 #endif
 389                 }
 390         }
 391         /*
 392          * If the /set record is the same as the last one we do not need to
 393          * output a new one.  So first we check to see if anything changed.
 394          * Note that we always output a /set record for the first directory.
 395          */
 396         if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
 397             ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
 398             ((keys & F_MODE) && (*pmode != savemode)) ||
 399             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 400             first) {
 401                 first = 0;
 402                 if (flavor != F_NETBSD6 && dflag)
 403                         printf("/set type=dir");
 404                 else
 405                         printf("/set type=file");
 406                 if (keys & (F_UID | F_UNAME)) {
 407                         if (keys & F_UNAME &&
 408                             (name = user_from_uid(saveuid, 1)) != NULL)
 409                                 printf(" uname=%s", name);
 410                         if (keys & F_UID || (keys & F_UNAME && name == NULL))
 411                                 printf(" uid=%lu", (u_long)saveuid);
 412                 }
 413                 if (keys & (F_GID | F_GNAME)) {
 414                         if (keys & F_GNAME &&
 415                             (name = group_from_gid(savegid, 1)) != NULL)
 416                                 printf(" gname=%s", name);
 417                         if (keys & F_GID || (keys & F_GNAME && name == NULL))
 418                                 printf(" gid=%lu", (u_long)savegid);
 419                 }
 420                 if (keys & F_MODE)
 421                         printf(" mode=%#lo", (u_long)savemode);
 422                 if (keys & F_NLINK)
 423                         printf(" nlink=1");
 424                 if (keys & F_FLAGS) {
 425                         char *str = flags_to_string(saveflags, "none");
 426                         printf(" flags=%s", str);
 427                         free(str);
 428                 }
 429                 printf("\n");
 430                 *puid = saveuid;
 431                 *pgid = savegid;
 432                 *pmode = savemode;
 433                 *pflags = saveflags;
 434         }
 435         return (0);
 436 }
 437
 438 /*
 439  * dcmp --
 440  *      used as a comparison function passed to fts_open() to control
 441  *      the order in which fts_read() returns results.  We make
 442  *      directories sort after non-directories, but otherwise sort in
 443  *      strcmp() order.
 444  *
 445  * Keep this in sync with nodecmp() in spec.c.
 446  */
 447 static int
 448 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
 449 {
 450
 451         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 452                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 453                         return (1);
 454         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 455                 return (-1);
 456         return (strcmp((*a)->fts_name, (*b)->fts_name));
 457 }
 458
 459 void
 460 output(int indent, int *offset, const char *fmt, ...)
 461 {
 462         va_list ap;
 463         char buf[1024];
 464
 465         va_start(ap, fmt);
 466         vsnprintf(buf, sizeof(buf), fmt, ap);
 467         va_end(ap);
 468
 469         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 470                 printf(" \\\n%*s", INDENTNAMELEN + indent, "");
 471                 *offset = INDENTNAMELEN + indent;
 472         }
 473         *offset += printf(" %s", buf) + 1;
 474 }