create.c revision 2877 
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
35static char sccsid[] = "@(#)create.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38#include <sys/param.h>
39#include <sys/stat.h>
40#include <time.h>
41#include <fcntl.h>
42#include <fts.h>
43#include <dirent.h>
44#include <grp.h>
45#include <pwd.h>
46#include <errno.h>
47#include <unistd.h>
48#include <stdio.h>
49#include "mtree.h"
50#include "extern.h"
51
52#define	INDENTNAMELEN	15
53#define	MAXLINELEN	80
54
55extern long int crc_total;
56extern int ftsoptions;
57extern int dflag, iflag, nflag, sflag;
58extern u_short keys;
59extern char fullpath[MAXPATHLEN];
60
61static gid_t gid;
62static uid_t uid;
63static mode_t mode;
64
65static int	dsort __P((const FTSENT **, const FTSENT **));
66static void	output __P((int, int *, const char *, ...));
67static int	statd __P((FTS *, FTSENT *, uid_t *, gid_t *, mode_t *));
68static void	statf __P((int, FTSENT *));
69
70void
71cwalk()
72{
73	register FTS *t;
74	register FTSENT *p;
75	time_t clock;
76	char *argv[2], host[MAXHOSTNAMELEN];
77	int indent = 0;
78
79	(void)time(&clock);
80	(void)gethostname(host, sizeof(host));
81	(void)printf(
82	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
83	    getlogin(), host, fullpath, ctime(&clock));
84
85	argv[0] = ".";
86	argv[1] = NULL;
87	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
88		err("fts_open: %s", strerror(errno));
89	while ((p = fts_read(t))) {
90		if (iflag)
91			indent = p->fts_level * 4;
92		switch(p->fts_info) {
93		case FTS_D:
94			if (!dflag)
95				(void)printf("\n");
96			if (!nflag)
97				(void)printf("# %s\n", p->fts_path);
98			statd(t, p, &uid, &gid, &mode);
99			statf(indent, p);
100			break;
101		case FTS_DP:
102			if (!nflag && (p->fts_level > 0))
103				(void)printf("%*s# %s\n", indent, "", p->fts_path);
104			(void)printf("%*s..\n", indent, "");
105			if (!dflag)
106				(void)printf("\n");
107			break;
108		case FTS_DNR:
109		case FTS_ERR:
110		case FTS_NS:
111			(void)fprintf(stderr,
112			    "mtree: %s: %s\n", p->fts_path, strerror(errno));
113			break;
114		default:
115			if (!dflag)
116				statf(indent, p);
117			break;
118
119		}
120	}
121	(void)fts_close(t);
122	if (sflag && keys & F_CKSUM)
123		(void)fprintf(stderr,
124		    "mtree: %s checksum: %lu\n", fullpath, crc_total);
125}
126
127static void
128statf(indent, p)
129	int indent;
130	FTSENT *p;
131{
132	struct group *gr;
133	struct passwd *pw;
134	u_long len, val;
135	int fd, offset;
136
137	if (iflag || S_ISDIR(p->fts_statp->st_mode))
138		offset = printf("%*s%s", indent, "", p->fts_name);
139	else
140		offset = printf("%*s    %s", indent, "", p->fts_name);
141
142	if (offset > (INDENTNAMELEN + indent))
143		offset = MAXLINELEN;
144	else
145		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
146
147	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
148		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
149	if (p->fts_statp->st_uid != uid) {
150		if (keys & F_UNAME) {
151			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
152				output(indent, &offset, "uname=%s", pw->pw_name);
153			} else {
154				err("could not get uname for uid=%u",
155				    p->fts_statp->st_uid);
156			}
157		}
158		if (keys & F_UID)
159			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
160	}
161	if (p->fts_statp->st_gid != gid) {
162		if (keys & F_GNAME) {
163			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
164				output(indent, &offset, "gname=%s", gr->gr_name);
165			} else {
166				err("could not get gname for gid=%u",
167				    p->fts_statp->st_gid);
168			}
169		}
170		if (keys & F_GID)
171			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
172	}
173	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
174		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
175	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
176		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
177	if (keys & F_SIZE)
178		output(indent, &offset, "size=%qd", p->fts_statp->st_size);
179	if (keys & F_TIME)
180		output(indent, &offset, "time=%ld.%ld",
181		    p->fts_statp->st_mtimespec.ts_sec,
182		    p->fts_statp->st_mtimespec.ts_nsec);
183	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
184		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
185		    crc(fd, &val, &len))
186			err("%s: %s", p->fts_accpath, strerror(errno));
187		(void)close(fd);
188		output(indent, &offset, "cksum=%lu", val);
189	}
190	if (keys & F_SLINK &&
191	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
192		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
193	(void)putchar('\n');
194}
195
196#define	MAXGID	5000
197#define	MAXUID	5000
198#define	MAXMODE	MBITS + 1
199
200static int
201statd(t, parent, puid, pgid, pmode)
202	FTS *t;
203	FTSENT *parent;
204	uid_t *puid;
205	gid_t *pgid;
206	mode_t *pmode;
207{
208	register FTSENT *p;
209	register gid_t sgid;
210	register uid_t suid;
211	register mode_t smode;
212	struct group *gr;
213	struct passwd *pw;
214	gid_t savegid = *pgid;
215	uid_t saveuid = *puid;
216	mode_t savemode = *pmode;
217	u_short maxgid, maxuid, maxmode, g[MAXGID], u[MAXUID], m[MAXMODE];
218	static int first = 1;
219
220	if ((p = fts_children(t, 0)) == NULL) {
221		if (errno)
222			err("%s: %s", RP(parent), strerror(errno));
223		return (1);
224	}
225
226	bzero(g, sizeof(g));
227	bzero(u, sizeof(u));
228	bzero(m, sizeof(m));
229
230	maxuid = maxgid = maxmode = 0;
231	for (; p; p = p->fts_link) {
232		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
233			smode = p->fts_statp->st_mode & MBITS;
234			if (smode < MAXMODE && ++m[smode] > maxmode) {
235				savemode = smode;
236				maxmode = m[smode];
237			}
238			sgid = p->fts_statp->st_gid;
239			if (sgid < MAXGID && ++g[sgid] > maxgid) {
240				savegid = sgid;
241				maxgid = g[sgid];
242			}
243			suid = p->fts_statp->st_uid;
244			if (suid < MAXUID && ++u[suid] > maxuid) {
245				saveuid = suid;
246				maxuid = u[suid];
247			}
248		}
249	}
250	/*
251	 * If the /set record is the same as the last one we do not need to output
252	 * a new one.  So first we check to see if anything changed.  Note that we
253	 * always output a /set record for the first directory.
254	 */
255	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
256	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
257	    ((keys & F_MODE) && (*pmode != savemode)) || (first)) {
258		first = 0;
259		if (dflag)
260			(void)printf("/set type=dir");
261		else
262			(void)printf("/set type=file");
263		if (keys & F_UNAME)
264			if ((pw = getpwuid(saveuid)) != NULL)
265				(void)printf(" uname=%s", pw->pw_name);
266			else
267				err("could not get uname for uid=%u", saveuid);
268		if (keys & F_UID)
269			(void)printf(" uid=%lu", saveuid);
270		if (keys & F_GNAME)
271			if ((gr = getgrgid(savegid)) != NULL)
272				(void)printf(" gname=%s", gr->gr_name);
273			else
274				err("could not get gname for gid=%u", savegid);
275		if (keys & F_GID)
276			(void)printf(" gid=%lu", savegid);
277		if (keys & F_MODE)
278			(void)printf(" mode=%#o", savemode);
279		if (keys & F_NLINK)
280			(void)printf(" nlink=1");
281		(void)printf("\n");
282		*puid = saveuid;
283		*pgid = savegid;
284		*pmode = savemode;
285	}
286	return (0);
287}
288
289static int
290dsort(a, b)
291	const FTSENT **a, **b;
292{
293	if (S_ISDIR((*a)->fts_statp->st_mode)) {
294		if (!S_ISDIR((*b)->fts_statp->st_mode))
295			return (1);
296	} else if (S_ISDIR((*b)->fts_statp->st_mode))
297		return (-1);
298	return (strcmp((*a)->fts_name, (*b)->fts_name));
299}
300
301#if __STDC__
302#include <stdarg.h>
303#else
304#include <varargs.h>
305#endif
306
307void
308#if __STDC__
309output(int indent, int *offset, const char *fmt, ...)
310#else
311output(indent, offset, fmt, va_alist)
312	int indent;
313	int *offset;
314	char *fmt;
315        va_dcl
316#endif
317{
318	va_list ap;
319	char buf[1024];
320#if __STDC__
321	va_start(ap, fmt);
322#else
323	va_start(ap);
324#endif
325	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
326	va_end(ap);
327
328	if (*offset + strlen(buf) > MAXLINELEN - 3) {
329		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
330		*offset = INDENTNAMELEN + indent;
331	}
332	*offset += printf(" %s", buf) + 1;
333}
334