create.c revision 8857 
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 <md5.h>
50#include "mtree.h"
51#include "extern.h"
52
53#define	INDENTNAMELEN	15
54#define	MAXLINELEN	80
55
56extern long int crc_total;
57extern int ftsoptions;
58extern int dflag, iflag, nflag, sflag;
59extern u_short keys;
60extern char fullpath[MAXPATHLEN];
61
62static gid_t gid;
63static uid_t uid;
64static mode_t mode;
65
66static int	dsort __P((const FTSENT **, const FTSENT **));
67static void	output __P((int, int *, const char *, ...));
68static int	statd __P((FTS *, FTSENT *, uid_t *, gid_t *, mode_t *));
69static void	statf __P((int, FTSENT *));
70
71void
72cwalk()
73{
74	register FTS *t;
75	register FTSENT *p;
76	time_t clock;
77	char *argv[2], host[MAXHOSTNAMELEN];
78	int indent = 0;
79
80	(void)time(&clock);
81	(void)gethostname(host, sizeof(host));
82	(void)printf(
83	    "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
84	    getlogin(), host, fullpath, ctime(&clock));
85
86	argv[0] = ".";
87	argv[1] = NULL;
88	if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
89		err("fts_open: %s", strerror(errno));
90	while ((p = fts_read(t))) {
91		if (iflag)
92			indent = p->fts_level * 4;
93		switch(p->fts_info) {
94		case FTS_D:
95			if (!dflag)
96				(void)printf("\n");
97			if (!nflag)
98				(void)printf("# %s\n", p->fts_path);
99			statd(t, p, &uid, &gid, &mode);
100			statf(indent, p);
101			break;
102		case FTS_DP:
103			if (!nflag && (p->fts_level > 0))
104				(void)printf("%*s# %s\n", indent, "", p->fts_path);
105			(void)printf("%*s..\n", indent, "");
106			if (!dflag)
107				(void)printf("\n");
108			break;
109		case FTS_DNR:
110		case FTS_ERR:
111		case FTS_NS:
112			(void)fprintf(stderr,
113			    "mtree: %s: %s\n", p->fts_path, strerror(errno));
114			break;
115		default:
116			if (!dflag)
117				statf(indent, p);
118			break;
119
120		}
121	}
122	(void)fts_close(t);
123	if (sflag && keys & F_CKSUM)
124		(void)fprintf(stderr,
125		    "mtree: %s checksum: %lu\n", fullpath, crc_total);
126}
127
128static void
129statf(indent, p)
130	int indent;
131	FTSENT *p;
132{
133	struct group *gr;
134	struct passwd *pw;
135	u_long len, val;
136	int fd, offset;
137
138	if (iflag || S_ISDIR(p->fts_statp->st_mode))
139		offset = printf("%*s%s", indent, "", p->fts_name);
140	else
141		offset = printf("%*s    %s", indent, "", p->fts_name);
142
143	if (offset > (INDENTNAMELEN + indent))
144		offset = MAXLINELEN;
145	else
146		offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
147
148	if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
149		output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
150	if (p->fts_statp->st_uid != uid) {
151		if (keys & F_UNAME) {
152			if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
153				output(indent, &offset, "uname=%s", pw->pw_name);
154			} else {
155				err("could not get uname for uid=%u",
156				    p->fts_statp->st_uid);
157			}
158		}
159		if (keys & F_UID)
160			output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
161	}
162	if (p->fts_statp->st_gid != gid) {
163		if (keys & F_GNAME) {
164			if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
165				output(indent, &offset, "gname=%s", gr->gr_name);
166			} else {
167				err("could not get gname for gid=%u",
168				    p->fts_statp->st_gid);
169			}
170		}
171		if (keys & F_GID)
172			output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
173	}
174	if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
175		output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
176	if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
177		output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
178	if (keys & F_SIZE)
179		output(indent, &offset, "size=%qd", p->fts_statp->st_size);
180	if (keys & F_TIME)
181		output(indent, &offset, "time=%ld.%ld",
182		    p->fts_statp->st_mtimespec.ts_sec,
183		    p->fts_statp->st_mtimespec.ts_nsec);
184	if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
185		if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
186		    crc(fd, &val, &len))
187			err("%s: %s", p->fts_accpath, strerror(errno));
188		(void)close(fd);
189		output(indent, &offset, "cksum=%lu", val);
190	}
191	if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
192		char *md5digest = MD5File(p->fts_accpath);
193
194		if (!md5digest) {
195			err("%s: %s", p->fts_accpath, strerror(errno));
196		} else {
197			output(indent, &offset, "md5digest=%s", md5digest);
198			free(md5digest);
199		}
200	}
201	if (keys & F_SLINK &&
202	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
203		output(indent, &offset, "link=%s", rlink(p->fts_accpath));
204	(void)putchar('\n');
205}
206
207#define	MAXGID	5000
208#define	MAXUID	5000
209#define	MAXMODE	MBITS + 1
210
211static int
212statd(t, parent, puid, pgid, pmode)
213	FTS *t;
214	FTSENT *parent;
215	uid_t *puid;
216	gid_t *pgid;
217	mode_t *pmode;
218{
219	register FTSENT *p;
220	register gid_t sgid;
221	register uid_t suid;
222	register mode_t smode;
223	struct group *gr;
224	struct passwd *pw;
225	gid_t savegid = *pgid;
226	uid_t saveuid = *puid;
227	mode_t savemode = *pmode;
228	u_short maxgid, maxuid, maxmode, g[MAXGID], u[MAXUID], m[MAXMODE];
229	static int first = 1;
230
231	if ((p = fts_children(t, 0)) == NULL) {
232		if (errno)
233			err("%s: %s", RP(parent), strerror(errno));
234		return (1);
235	}
236
237	bzero(g, sizeof(g));
238	bzero(u, sizeof(u));
239	bzero(m, sizeof(m));
240
241	maxuid = maxgid = maxmode = 0;
242	for (; p; p = p->fts_link) {
243		if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
244			smode = p->fts_statp->st_mode & MBITS;
245			if (smode < MAXMODE && ++m[smode] > maxmode) {
246				savemode = smode;
247				maxmode = m[smode];
248			}
249			sgid = p->fts_statp->st_gid;
250			if (sgid < MAXGID && ++g[sgid] > maxgid) {
251				savegid = sgid;
252				maxgid = g[sgid];
253			}
254			suid = p->fts_statp->st_uid;
255			if (suid < MAXUID && ++u[suid] > maxuid) {
256				saveuid = suid;
257				maxuid = u[suid];
258			}
259		}
260	}
261	/*
262	 * If the /set record is the same as the last one we do not need to output
263	 * a new one.  So first we check to see if anything changed.  Note that we
264	 * always output a /set record for the first directory.
265	 */
266	if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
267	    (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
268	    ((keys & F_MODE) && (*pmode != savemode)) || (first)) {
269		first = 0;
270		if (dflag)
271			(void)printf("/set type=dir");
272		else
273			(void)printf("/set type=file");
274		if (keys & F_UNAME)
275			if ((pw = getpwuid(saveuid)) != NULL)
276				(void)printf(" uname=%s", pw->pw_name);
277			else
278				err("could not get uname for uid=%u", saveuid);
279		if (keys & F_UID)
280			(void)printf(" uid=%lu", saveuid);
281		if (keys & F_GNAME)
282			if ((gr = getgrgid(savegid)) != NULL)
283				(void)printf(" gname=%s", gr->gr_name);
284			else
285				err("could not get gname for gid=%u", savegid);
286		if (keys & F_GID)
287			(void)printf(" gid=%lu", savegid);
288		if (keys & F_MODE)
289			(void)printf(" mode=%#o", savemode);
290		if (keys & F_NLINK)
291			(void)printf(" nlink=1");
292		(void)printf("\n");
293		*puid = saveuid;
294		*pgid = savegid;
295		*pmode = savemode;
296	}
297	return (0);
298}
299
300static int
301dsort(a, b)
302	const FTSENT **a, **b;
303{
304	if (S_ISDIR((*a)->fts_statp->st_mode)) {
305		if (!S_ISDIR((*b)->fts_statp->st_mode))
306			return (1);
307	} else if (S_ISDIR((*b)->fts_statp->st_mode))
308		return (-1);
309	return (strcmp((*a)->fts_name, (*b)->fts_name));
310}
311
312#if __STDC__
313#include <stdarg.h>
314#else
315#include <varargs.h>
316#endif
317
318void
319#if __STDC__
320output(int indent, int *offset, const char *fmt, ...)
321#else
322output(indent, offset, fmt, va_alist)
323	int indent;
324	int *offset;
325	char *fmt;
326        va_dcl
327#endif
328{
329	va_list ap;
330	char buf[1024];
331#if __STDC__
332	va_start(ap, fmt);
333#else
334	va_start(ap);
335#endif
336	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
337	va_end(ap);
338
339	if (*offset + strlen(buf) > MAXLINELEN - 3) {
340		(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
341		*offset = INDENTNAMELEN + indent;
342	}
343	*offset += printf(" %s", buf) + 1;
344}
345