diff options
Diffstat (limited to 'pw/cpdir.c')
| -rw-r--r-- | pw/cpdir.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/pw/cpdir.c b/pw/cpdir.c new file mode 100644 index 0000000..c5534e5 --- /dev/null +++ b/pw/cpdir.c @@ -0,0 +1,131 @@ +/*- + * Copyright (C) 1996 + * David L. Nugent. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/param.h> +#include <dirent.h> + +#include "pw.h" +#include "pwupd.h" + +void +copymkdir(char const * dir, char const * skel, mode_t mode, uid_t uid, gid_t gid) +{ + char src[MAXPATHLEN]; + char dst[MAXPATHLEN]; + char lnk[MAXPATHLEN]; + int len; + + if (mkdir(dir, mode) != 0 && errno != EEXIST) { + warn("mkdir(%s)", dir); + } else { + int infd, outfd; + struct stat st; + + static char counter = 0; + static char *copybuf = NULL; + + ++counter; + chown(dir, uid, gid); + if (skel != NULL && *skel != '\0') { + DIR *d = opendir(skel); + + if (d != NULL) { + struct dirent *e; + + while ((e = readdir(d)) != NULL) { + char *p = e->d_name; + + if (snprintf(src, sizeof(src), "%s/%s", skel, p) >= (int)sizeof(src)) + warn("warning: pathname too long '%s/%s' (skel not copied)", skel, p); + else if (lstat(src, &st) == 0) { + if (strncmp(p, "dot.", 4) == 0) /* Conversion */ + p += 3; + if (snprintf(dst, sizeof(dst), "%s/%s", dir, p) >= (int)sizeof(dst)) + warn("warning: path too long '%s/%s' (skel file skipped)", dir, p); + else { + if (S_ISDIR(st.st_mode)) { /* Recurse for this */ + if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) + copymkdir(dst, src, st.st_mode & _DEF_DIRMODE, uid, gid); + chflags(dst, st.st_flags); /* propagate flags */ + } else if (S_ISLNK(st.st_mode) && (len = readlink(src, lnk, sizeof(lnk))) != -1) { + lnk[len] = '\0'; + symlink(lnk, dst); + lchown(dst, uid, gid); + /* + * Note: don't propagate special attributes + * but do propagate file flags + */ + } else if (S_ISREG(st.st_mode) && (outfd = open(dst, O_RDWR | O_CREAT | O_EXCL, st.st_mode)) != -1) { + if ((infd = open(src, O_RDONLY)) == -1) { + close(outfd); + remove(dst); + } else { + int b; + + /* + * Allocate our copy buffer if we need to + */ + if (copybuf == NULL) + copybuf = malloc(4096); + while ((b = read(infd, copybuf, 4096)) > 0) + write(outfd, copybuf, b); + close(infd); + /* + * Propagate special filesystem flags + */ + fchown(outfd, uid, gid); + fchflags(outfd, st.st_flags); + close(outfd); + chown(dst, uid, gid); + } + } + } + } + } + closedir(d); + } + } + if (--counter == 0 && copybuf != NULL) { + free(copybuf); + copybuf = NULL; + } + } +} + |