create.c revision 38020 
1/*-
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39	"$Id: create.c,v 1.10 1998/06/05 14:43:39 peter Exp $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/stat.h>
44#include <dirent.h>
45#include <err.h>
46#include <errno.h>
47#include <fcntl.h>
48#include <fts.h>
49#include <grp.h>
50#include <md5.h>
51#include <pwd.h>
52#include <stdio.h>
53#include <time.h>
54#include <unistd.h>
55#include "mtree.h"
56#include "extern.h"
57
58#define	INDENTNAMELEN	15
59#define	MAXLINELEN	80
60
61extern long int crc_total;
62extern int ftsoptions;
63extern int dflag, iflag, nflag, sflag;
64extern u_int keys;
65extern char fullpath[MAXPATHLEN];
66extern int lineno;
67
68static gid_t gid;
69static uid_t uid;
70static mode_t mode;
71
72static int	dsort __P((const FTSENT **, const FTSENT **));
73static void	output __P((int, int *, const char *, ...));
74static int	statd __P((FTS *, FTSENT *, uid_t *, gid_t *, mode_t *));
75static void	statf __P((int, FTSENT *));
76
77void
78cwalk()
79{
80	register FTS *t;
81	register FTSENT *p;
82	time_t clock;
83	char *argv[2], host[MAXHOSTNAMELEN];
84	int indent = 0;
85
86	(void)time(&clock);
87	(void)gethostname(host, sizeof(host));
88	(void)printf(
89	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
90	    getlogin(), host, fullpath, ctime(&clock));
91
92	argv[0] = ".";
93	argv[1] = NULL;
94	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
95		err(1, "line %d: fts_open", lineno);
96	while ((p = fts_read(t))) {
97		if (iflag)
98			indent = p->fts_level * 4;
99		switch(p->fts_info) {
100		case FTS_D:
101			if (!dflag)
102				(void)printf("\n");
103			if (!nflag)
104				(void)printf("# %s\n", p->fts_path);
105			statd(t, p, &uid, &gid, &mode);
106			statf(indent, p);
107			break;
108		case FTS_DP:
109			if (!nflag && (p->fts_level > 0))
110				(void)printf("%*s# %s\n", indent, "", p->fts_path);
111			(void)printf("%*s..\n", indent, "");
112			if (!dflag)
113				(void)printf("\n");
114			break;
115		case FTS_DNR:
116		case FTS_ERR:
117		case FTS_NS:
118			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
119			break;
120		default:
121			if (!dflag)
122				statf(indent, p);
123			break;
124
125		}
126	}
127	(void)fts_close(t);
128	if (sflag && keys & F_CKSUM)
129		warnx("%s checksum: %lu", fullpath, crc_total);
130}
131
132static void
133statf(indent, p)
134	int indent;
135	FTSENT *p;
136{
137	struct group *gr;
138	struct passwd *pw;
139	u_long len, val;
140	int fd, offset;
141
142	if (iflag || S_ISDIR(p->fts_statp->st_mode))
143		offset = printf("%*s%s", indent, "", p->fts_name);
144	else
145		offset = printf("%*s    %s", indent, "", p->fts_name);
146
147	if (offset > (INDENTNAMELEN + indent))
148		offset = MAXLINELEN;
149	else
150		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
151
152	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
153		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
154	if (p->fts_statp->st_uid != uid) {
155		if (keys & F_UNAME) {
156			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
157				output(indent, &offset, "uname=%s", pw->pw_name);
158			} else {
159				errx(1,
160				"line %d: could not get uname for uid=%u",
161				lineno, p->fts_statp->st_uid);
162			}
163		}
164		if (keys & F_UID)
165			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
166	}
167	if (p->fts_statp->st_gid != gid) {
168		if (keys & F_GNAME) {
169			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
170				output(indent, &offset, "gname=%s", gr->gr_name);
171			} else {
172				errx(1,
173				"line %d: could not get gname for gid=%u",
174				lineno, p->fts_statp->st_gid);
175			}
176		}
177		if (keys & F_GID)
178			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
179	}
180	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
181		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
182	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
183		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
184	if (keys & F_SIZE)
185		output(indent, &offset, "size=%qd", p->fts_statp->st_size);
186	if (keys & F_TIME)
187		output(indent, &offset, "time=%ld.%ld",
188		    p->fts_statp->st_mtimespec.tv_sec,
189		    p->fts_statp->st_mtimespec.tv_nsec);
190	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
191		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
192		    crc(fd, &val, &len))
193			err(1, "line %d: %s", lineno, p->fts_accpath);
194		(void)close(fd);
195		output(indent, &offset, "cksum=%lu", val);
196	}
197	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
198		char *md5digest, buf[33];
199
200		md5digest = MD5File(p->fts_accpath,buf);
201		if (!md5digest) {
202			err(1, "line %d: %s", lineno, p->fts_accpath);
203		} else {
204			output(indent, &offset, "md5digest=%s", md5digest);
205		}
206	}
207	if (keys & F_SLINK &&
208	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
209		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
210	(void)putchar('\n');
211}
212
213#define	MAXGID	5000
214#define	MAXUID	5000
215#define	MAXMODE	MBITS + 1
216
217static int
218statd(t, parent, puid, pgid, pmode)
219	FTS *t;
220	FTSENT *parent;
221	uid_t *puid;
222	gid_t *pgid;
223	mode_t *pmode;
224{
225	register FTSENT *p;
226	register gid_t sgid;
227	register uid_t suid;
228	register mode_t smode;
229	struct group *gr;
230	struct passwd *pw;
231	gid_t savegid = *pgid;
232	uid_t saveuid = *puid;
233	mode_t savemode = *pmode;
234	u_short maxgid, maxuid, maxmode, g[MAXGID], u[MAXUID], m[MAXMODE];
235	static int first = 1;
236
237	if ((p = fts_children(t, 0)) == NULL) {
238		if (errno)
239			err(1, "line %d: %s", lineno, RP(parent));
240		return (1);
241	}
242
243	bzero(g, sizeof(g));
244	bzero(u, sizeof(u));
245	bzero(m, sizeof(m));
246
247	maxuid = maxgid = maxmode = 0;
248	for (; p; p = p->fts_link) {
249		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
250			smode = p->fts_statp->st_mode & MBITS;
251			if (smode < MAXMODE && ++m[smode] > maxmode) {
252				savemode = smode;
253				maxmode = m[smode];
254			}
255			sgid = p->fts_statp->st_gid;
256			if (sgid < MAXGID && ++g[sgid] > maxgid) {
257				savegid = sgid;
258				maxgid = g[sgid];
259			}
260			suid = p->fts_statp->st_uid;
261			if (suid < MAXUID && ++u[suid] > maxuid) {
262				saveuid = suid;
263				maxuid = u[suid];
264			}
265		}
266	}
267	/*
268	 * If the /set record is the same as the last one we do not need to output
269	 * a new one.  So first we check to see if anything changed.  Note that we
270	 * always output a /set record for the first directory.
271	 */
272	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
273	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
274	    ((keys & F_MODE) && (*pmode != savemode)) || (first)) {
275		first = 0;
276		if (dflag)
277			(void)printf("/set type=dir");
278		else
279			(void)printf("/set type=file");
280		if (keys & F_UNAME)
281			if ((pw = getpwuid(saveuid)) != NULL)
282				(void)printf(" uname=%s", pw->pw_name);
283			else
284				errx(1,
285				"line %d: could not get uname for uid=%u",
286				lineno, saveuid);
287		if (keys & F_UID)
288			(void)printf(" uid=%lu", (u_long)saveuid);
289		if (keys & F_GNAME)
290			if ((gr = getgrgid(savegid)) != NULL)
291				(void)printf(" gname=%s", gr->gr_name);
292			else
293				errx(1,
294				"line %d: could not get gname for gid=%u",
295				lineno, savegid);
296		if (keys & F_GID)
297			(void)printf(" gid=%lu", (u_long)savegid);
298		if (keys & F_MODE)
299			(void)printf(" mode=%#o", savemode);
300		if (keys & F_NLINK)
301			(void)printf(" nlink=1");
302		(void)printf("\n");
303		*puid = saveuid;
304		*pgid = savegid;
305		*pmode = savemode;
306	}
307	return (0);
308}
309
310static int
311dsort(a, b)
312	const FTSENT **a, **b;
313{
314	if (S_ISDIR((*a)->fts_statp->st_mode)) {
315		if (!S_ISDIR((*b)->fts_statp->st_mode))
316			return (1);
317	} else if (S_ISDIR((*b)->fts_statp->st_mode))
318		return (-1);
319	return (strcmp((*a)->fts_name, (*b)->fts_name));
320}
321
322#if __STDC__
323#include <stdarg.h>
324#else
325#include <varargs.h>
326#endif
327
328void
329#if __STDC__
330output(int indent, int *offset, const char *fmt, ...)
331#else
332output(indent, offset, fmt, va_alist)
333	int indent;
334	int *offset;
335	char *fmt;
336        va_dcl
337#endif
338{
339	va_list ap;
340	char buf[1024];
341#if __STDC__
342	va_start(ap, fmt);
343#else
344	va_start(ap);
345#endif
346	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
347	va_end(ap);
348
349	if (*offset + strlen(buf) > MAXLINELEN - 3) {
350		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
351		*offset = INDENTNAMELEN + indent;
352	}
353	*offset += printf(" %s", buf) + 1;
354}
355