Home | History | Annotate | Line # | Download | only in mtree
compare.c revision 1.27 
      1 /*	$NetBSD: compare.c,v 1.27 2001/10/01 02:30:40 lukem 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)compare.c	8.1 (Berkeley) 6/6/93";
     40 #else
     41 __RCSID("$NetBSD: compare.c,v 1.27 2001/10/01 02:30:40 lukem Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <sys/param.h>
     46 #include <sys/stat.h>
     47 #include <sys/types.h>
     48 
     49 #include <errno.h>
     50 #include <fcntl.h>
     51 #include <fts.h>
     52 #include <md5.h>
     53 #include <stdio.h>
     54 #include <time.h>
     55 #include <unistd.h>
     56 
     57 #include "mtree.h"
     58 #include "extern.h"
     59 
     60 extern int iflag, lflag, mflag, tflag, uflag;
     61 
     62 #define	INDENTNAMELEN	8
     63 #define MARK                                                                  \
     64 do {                                                                          \
     65 	len = printf("%s: ", RP(p));                                          \
     66 	if (len > INDENTNAMELEN) {                                            \
     67 		tab = "\t";                                                   \
     68 		(void)printf("\n");                                           \
     69 	} else {                                                              \
     70 		tab = "";                                                     \
     71 		(void)printf("%*s", INDENTNAMELEN - (int)len, "");            \
     72 	}                                                                     \
     73 } while (0)
     74 #define	LABEL if (!label++) MARK
     75 
     76 #define CHANGEFLAGS(path, oflags) \
     77 	if (flags != (oflags)) {                                              \
     78 		if (!label) {                                                 \
     79 			MARK;                                                 \
     80 			(void)printf("%sflags (\"%s\"", tab,                  \
     81 			    flags_to_string(p->fts_statp->st_flags, "none")); \
     82 		}                                                             \
     83 		if (chflags(path, flags)) {                                   \
     84 			label++;                                              \
     85 			(void)printf(", not modified: %s)\n",                 \
     86 			    strerror(errno));                                 \
     87 		} else                                                        \
     88 			(void)printf(", modified to \"%s\")\n",               \
     89 			     flags_to_string(flags, "none"));                 \
     90 	}
     91 
     92 /* SETFLAGS:
     93  * given pflags, additionally set those flags specified in sflags and
     94  * selected by mask (the other flags are left unchanged). oflags is
     95  * passed as reference to check if chflags is necessary.
     96  */
     97 #define SETFLAGS(path, sflags, pflags, oflags, mask)                          \
     98 do {                                                                          \
     99 	flags = ((sflags) & (mask)) | (pflags);                               \
    100         CHANGEFLAGS(path, oflags);                                            \
    101 } while (0)
    102 
    103 /* CLEARFLAGS:
    104  * given pflags, reset the flags specified in sflags and selected by mask
    105  * (the other flags are left unchanged). oflags is
    106  * passed as reference to check if chflags is necessary.
    107  */
    108 #define CLEARFLAGS(path, sflags, pflags, oflags, mask)                        \
    109 do {                                                                          \
    110 	flags = (~((sflags) & (mask)) & CH_MASK) & (pflags);                  \
    111         CHANGEFLAGS(path, oflags);                                            \
    112 } while (0)
    113 
    114 int
    115 compare(const char *name, NODE *s, FTSENT *p)
    116 {
    117 	u_int32_t len, val, flags;
    118 	int fd, label;
    119 	const char *cp;
    120 	char *tab;
    121 	char md5buf[35];
    122 
    123 	tab = NULL;
    124 	label = 0;
    125 	switch(s->type) {
    126 	case F_BLOCK:
    127 		if (!S_ISBLK(p->fts_statp->st_mode))
    128 			goto typeerr;
    129 		break;
    130 	case F_CHAR:
    131 		if (!S_ISCHR(p->fts_statp->st_mode))
    132 			goto typeerr;
    133 		break;
    134 	case F_DIR:
    135 		if (!S_ISDIR(p->fts_statp->st_mode))
    136 			goto typeerr;
    137 		break;
    138 	case F_FIFO:
    139 		if (!S_ISFIFO(p->fts_statp->st_mode))
    140 			goto typeerr;
    141 		break;
    142 	case F_FILE:
    143 		if (!S_ISREG(p->fts_statp->st_mode))
    144 			goto typeerr;
    145 		break;
    146 	case F_LINK:
    147 		if (!S_ISLNK(p->fts_statp->st_mode))
    148 			goto typeerr;
    149 		break;
    150 	case F_SOCK:
    151 		if (!S_ISSOCK(p->fts_statp->st_mode)) {
    152 typeerr:		LABEL;
    153 			(void)printf("\ttype (%s, %s)\n",
    154 			    nodetype(s->type), inotype(p->fts_statp->st_mode));
    155 		}
    156 		break;
    157 	}
    158 	if (iflag && !uflag) {
    159 		if (s->flags & F_FLAGS)
    160 		    SETFLAGS(p->fts_accpath, s->st_flags,
    161 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    162 			SP_FLGS);
    163 		return (label);
    164         }
    165 	if (mflag && !uflag) {
    166 		if (s->flags & F_FLAGS)
    167 		    CLEARFLAGS(p->fts_accpath, s->st_flags,
    168 			p->fts_statp->st_flags, p->fts_statp->st_flags,
    169 			SP_FLGS);
    170 		return (label);
    171         }
    172 	/* Set the uid/gid first, then set the mode. */
    173 	if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) {
    174 		LABEL;
    175 		(void)printf("%suser (%lu, %lu",
    176 		    tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid);
    177 		if (uflag) {
    178 			if (chown(p->fts_accpath, s->st_uid, -1))
    179 				(void)printf(", not modified: %s)\n",
    180 				    strerror(errno));
    181 			else
    182 				(void)printf(", modified)\n");
    183 		} else
    184 			(void)printf(")\n");
    185 		tab = "\t";
    186 	}
    187 	if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) {
    188 		LABEL;
    189 		(void)printf("%sgid (%lu, %lu",
    190 		    tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid);
    191 		if (uflag) {
    192 			if (chown(p->fts_accpath, -1, s->st_gid))
    193 				(void)printf(", not modified: %s)\n",
    194 				    strerror(errno));
    195 			else
    196 				(void)printf(", modified)\n");
    197 		}
    198 		else
    199 			(void)printf(")\n");
    200 		tab = "\t";
    201 	}
    202 	if (s->flags & F_MODE &&
    203 	    s->st_mode != (p->fts_statp->st_mode & MBITS)) {
    204 		if (lflag) {
    205 			mode_t tmode, mode;
    206 
    207 			tmode = s->st_mode;
    208 			mode = p->fts_statp->st_mode & MBITS;
    209 			/*
    210 			 * if none of the suid/sgid/etc bits are set,
    211 			 * then if the mode is a subset of the target,
    212 			 * skip.
    213 			 */
    214 			if (!((tmode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) ||
    215 			    (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO))))
    216 				if ((mode | tmode) == tmode)
    217 					goto skip;
    218 		}
    219 
    220 		LABEL;
    221 		(void)printf("%spermissions (%#lo, %#lo",
    222 		    tab, (u_long)s->st_mode,
    223 		    (u_long)p->fts_statp->st_mode & MBITS);
    224 		if (uflag) {
    225 			if (chmod(p->fts_accpath, s->st_mode))
    226 				(void)printf(", not modified: %s)\n",
    227 				    strerror(errno));
    228 			else
    229 				(void)printf(", modified)\n");
    230 		}
    231 		else
    232 			(void)printf(")\n");
    233 		tab = "\t";
    234 	skip:
    235 	}
    236 	if (s->flags & F_NLINK && s->type != F_DIR &&
    237 	    s->st_nlink != p->fts_statp->st_nlink) {
    238 		LABEL;
    239 		(void)printf("%slink count (%lu, %lu)\n",
    240 		    tab, (u_long)s->st_nlink, (u_long)p->fts_statp->st_nlink);
    241 		tab = "\t";
    242 	}
    243 	if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) {
    244 		LABEL;
    245 		(void)printf("%ssize (%lld, %lld)\n",
    246 		    tab, (long long)s->st_size,
    247 		    (long long)p->fts_statp->st_size);
    248 		tab = "\t";
    249 	}
    250 	/*
    251 	 * XXX
    252 	 * Since utimes(2) only takes a timeval, there's no point in
    253 	 * comparing the low bits of the timespec nanosecond field.  This
    254 	 * will only result in mismatches that we can never fix.
    255 	 *
    256 	 * Doesn't display microsecond differences.
    257 	 */
    258 	if (s->flags & F_TIME) {
    259 		struct timeval tv[2];
    260 		struct stat *ps = p->fts_statp;
    261 		time_t smtime = s->st_mtimespec.tv_sec;
    262 
    263 #ifdef BSD4_4
    264 		time_t pmtime = ps->st_mtimespec.tv_sec;
    265 
    266 		TIMESPEC_TO_TIMEVAL(&tv[1], &ps->st_mtimespec);
    267 #else
    268 		time_t pmtime = (time_t)ps->st_mtime;
    269 
    270 		tv[1].tv_sec = ps->st_mtime;
    271 		tv[1].tv_usec = 0;
    272 #endif
    273 		TIMESPEC_TO_TIMEVAL(&tv[0], &s->st_mtimespec);
    274 
    275 		if (tv[0].tv_sec != tv[1].tv_sec ||
    276 		    tv[0].tv_usec != tv[1].tv_usec) {
    277 			LABEL;
    278 			(void)printf("%smodification time (%.24s, ",
    279 			    tab, ctime(&smtime));
    280 			(void)printf("%.24s", ctime(&pmtime));
    281 			if (tflag) {
    282 				tv[1] = tv[0];
    283 				if (utimes(p->fts_accpath, tv))
    284 					(void)printf(", not modified: %s)\n",
    285 					    strerror(errno));
    286 				else
    287 					(void)printf(", modified)\n");
    288 			} else
    289 				(void)printf(")\n");
    290 			tab = "\t";
    291 		}
    292 	}
    293 	/*
    294 	 * XXX
    295 	 * since chflags(2) will reset file times, the utimes() above
    296 	 * may have been useless!  oh well, we'd rather have correct
    297 	 * flags, rather than times?
    298 	 */
    299         if ((s->flags & F_FLAGS) && ((s->st_flags != p->fts_statp->st_flags)
    300 	    || mflag || iflag)) {
    301 		if (s->st_flags != p->fts_statp->st_flags) {
    302 			LABEL;
    303 			(void)printf("%sflags (\"%s\" is not ", tab,
    304 			    flags_to_string(s->st_flags, "none"));
    305 			(void)printf("\"%s\"",
    306 			    flags_to_string(p->fts_statp->st_flags, "none"));
    307 		}
    308 		if (uflag) {
    309 			if (iflag)
    310 				SETFLAGS(p->fts_accpath, s->st_flags,
    311 				    0, p->fts_statp->st_flags, CH_MASK);
    312 			else if (mflag)
    313 				CLEARFLAGS(p->fts_accpath, s->st_flags,
    314 				    0, p->fts_statp->st_flags, SP_FLGS);
    315 			else
    316 				SETFLAGS(p->fts_accpath, s->st_flags,
    317 			     	    0, p->fts_statp->st_flags,
    318 				    (~SP_FLGS & CH_MASK));
    319 		} else
    320 			(void)printf(")\n");
    321 		tab = "\t";
    322 	}
    323 	if (s->flags & F_CKSUM) {
    324 		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) {
    325 			LABEL;
    326 			(void)printf("%scksum: %s: %s\n",
    327 			    tab, p->fts_accpath, strerror(errno));
    328 			tab = "\t";
    329 		} else if (crc(fd, &val, &len)) {
    330 			(void)close(fd);
    331 			LABEL;
    332 			(void)printf("%scksum: %s: %s\n",
    333 			    tab, p->fts_accpath, strerror(errno));
    334 			tab = "\t";
    335 		} else {
    336 			(void)close(fd);
    337 			if (s->cksum != val) {
    338 				LABEL;
    339 				(void)printf("%scksum (%lu, %lu)\n",
    340 				    tab, s->cksum, (unsigned long)val);
    341 			}
    342 			tab = "\t";
    343 		}
    344 	}
    345 	if (s->flags & F_MD5) {
    346 		if (MD5File(p->fts_accpath, md5buf) == NULL) {
    347 			LABEL;
    348 			(void)printf("%smd5: %s: %s\n",
    349 			    tab, p->fts_accpath, strerror(errno));
    350 			tab = "\t";
    351 		} else {
    352 			if (strcmp(s->md5sum, md5buf)) {
    353 				LABEL;
    354 				(void)printf("%smd5 (0x%s, 0x%s)\n",
    355 				    tab, s->md5sum, md5buf);
    356 			}
    357 			tab = "\t";
    358 		}
    359 	}
    360 
    361 	if (s->flags & F_SLINK && strcmp(cp = rlink(name), s->slink)) {
    362 		LABEL;
    363 		(void)printf("%slink ref (%s, %s)\n", tab, cp, s->slink);
    364 	}
    365 	return (label);
    366 }
    367 
    368 const char *
    369 inotype(u_int type)
    370 {
    371 
    372 	return (nodetype(type & S_IFMT));
    373 }
    374 
    375 const char *
    376 nodetype(u_int type)
    377 {
    378 
    379 	switch(type) {
    380 	case F_BLOCK:
    381 	case S_IFBLK:
    382 		return ("block");
    383 	case F_CHAR:
    384 	case S_IFCHR:
    385 		return ("char");
    386 	case F_DIR:
    387 	case S_IFDIR:
    388 		return ("dir");
    389 	case F_FIFO:
    390 	case S_IFIFO:
    391 		return ("fifo");
    392 	case F_FILE:
    393 	case S_IFREG:
    394 		return ("file");
    395 	case F_LINK:
    396 	case S_IFLNK:
    397 		return ("link");
    398 	case F_SOCK:
    399 	case S_IFSOCK:
    400 		return ("socket");
    401 	default:
    402 		return ("unknown");
    403 	}
    404 	/* NOTREACHED */
    405 }
    406 
    407 const char *
    408 rlink(const char *name)
    409 {
    410 	static char lbuf[MAXPATHLEN];
    411 	int len;
    412 
    413 	if ((len = readlink(name, lbuf, sizeof(lbuf))) == -1)
    414 		mtree_err("%s: %s", name, strerror(errno));
    415 	lbuf[len] = '\0';
    416 	return (lbuf);
    417 }
    418