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131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/*-
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <dirent.h>
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#include "pwupd.h"
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void
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copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid)
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{
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char src[MAXPATHLEN];
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char dst[MAXPATHLEN];
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char lnk[MAXPATHLEN];
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int len;
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if (mkdir(dir, mode) != 0 && errno != EEXIST) {
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warn("mkdir(%s)", dir);
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} else {
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int infd, outfd;
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struct stat st;
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static char counter = 0;
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static char *copybuf = NULL;
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++counter;
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chown(dir, uid, gid);
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if (skel != NULL && *skel != '\0') {
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DIR *d = opendir(skel);
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if (d != NULL) {
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struct dirent *e;
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while ((e = readdir(d)) != NULL) {
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char *p = e->d_name;
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if (snprintf(src, sizeof(src), "%s/%s", skel, p) >= (int)sizeof(src))
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warn("warning: pathname too long '%s/%s' (skel not copied)", skel, p);
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else if (lstat(src, &st) == 0) {
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if (strncmp(p, "dot.", 4) == 0) /* Conversion */
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p += 3;
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if (snprintf(dst, sizeof(dst), "%s/%s", dir, p) >= (int)sizeof(dst))
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warn("warning: path too long '%s/%s' (skel file skipped)", dir, p);
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else {
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if (S_ISDIR(st.st_mode)) { /* Recurse for this */
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if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0)
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copymkdir(dst, src, (st.st_mode & 0777), uid, gid);
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chflags(dst, st.st_flags); /* propogate flags */
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} else if (S_ISLNK(st.st_mode) && (len = readlink(src, lnk, sizeof(lnk))) != -1) {
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lnk[len] = '\0';
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symlink(lnk, dst);
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lchown(dst, uid, gid);
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/*
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* Note: don't propogate special attributes
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* but do propogate file flags
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*/
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} else if (S_ISREG(st.st_mode) && (outfd = open(dst, O_RDWR | O_CREAT | O_EXCL, st.st_mode)) != -1) {
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if ((infd = open(src, O_RDONLY)) == -1) {
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close(outfd);
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remove(dst);
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} else {
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int b;
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/*
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* Allocate our copy buffer if we need to
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*/
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if (copybuf == NULL)
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copybuf = malloc(4096);
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while ((b = read(infd, copybuf, 4096)) > 0)
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write(outfd, copybuf, b);
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close(infd);
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/*
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* Propogate special filesystem flags
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*/
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fchown(outfd, uid, gid);
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fchflags(outfd, st.st_flags);
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close(outfd);
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chown(dst, uid, gid);
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}
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}
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}
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}
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}
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closedir(d);
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}
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}
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if (--counter == 0 && copybuf != NULL) {
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free(copybuf);
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copybuf = NULL;
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}
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}
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}
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