cpdir.c revision 20303 
1/*-
2 * Copyright (C) 1996
3 *	David L. Nugent.  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 *
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: cpdir.c,v 1.1.1.2 1996/12/09 23:55:15 joerg Exp $
27 */
28
29#include <stdio.h>
30#include <string.h>
31#include <stdlib.h>
32#include <fcntl.h>
33#include <sys/types.h>
34#include <sys/stat.h>
35#include <dirent.h>
36#include <unistd.h>
37#include <sys/param.h>
38#include <errno.h>
39
40#include "pwupd.h"
41
42void
43copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid)
44{
45	int             rc = 0;
46	char            src[MAXPATHLEN];
47	char            dst[MAXPATHLEN];
48
49	if (mkdir(dir, mode) != 0 && errno != EEXIST) {
50		sprintf(src, "mkdir(%s)", dir);
51		perror(src);
52	} else {
53		int             infd, outfd;
54		struct stat     st;
55
56		static char     counter = 0;
57		static char    *copybuf = NULL;
58
59		++counter;
60		chown(dir, uid, gid);
61		if (skel == NULL || *skel == '\0')
62			rc = 1;
63		else {
64			DIR            *d = opendir(skel);
65
66			if (d != NULL) {
67				struct dirent  *e;
68
69				while ((e = readdir(d)) != NULL) {
70					char           *p = e->d_name;
71
72					sprintf(src, "%s/%s", skel, p);
73					if (stat(src, &st) == 0) {
74						if (strncmp(p, "dot.", 4) == 0)	/* Conversion */
75							p += 3;
76						sprintf(dst, "%s/%s", dir, p);
77						if (S_ISDIR(st.st_mode)) {	/* Recurse for this */
78							if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0)
79								copymkdir(dst, src, (st.st_mode & 0777), uid, gid);
80							/*
81							 * Note: don't propogate 'special' attributes
82							 */
83						} else if (S_ISREG(st.st_mode) && (outfd = open(dst, O_RDWR | O_CREAT | O_EXCL, st.st_mode)) != -1) {
84							if ((infd = open(src, O_RDONLY)) == -1) {
85								close(outfd);
86								remove(dst);
87							} else {
88								int             b;
89
90								/*
91								 * Allocate our copy buffer if we need to
92								 */
93								if (copybuf == NULL)
94									copybuf = malloc(4096);
95								while ((b = read(infd, copybuf, 4096)) > 0)
96									write(outfd, copybuf, b);
97								close(infd);
98								close(outfd);
99								chown(dst, uid, gid);
100							}
101						}
102					}
103				}
104				closedir(d);
105			}
106		}
107		if (--counter == 0 && copybuf != NULL) {
108			free(copybuf);
109			copybuf = NULL;
110		}
111	}
112}
113
114