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dirwalk.c
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dirwalk.c
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/* $Id: dirwalk.c,v 1.9 2005/04/21 04:46:01 cvsremote Exp $
dirwalk.c: walking through directory tree
Copyright (c) 2005, Yoichi Hariguchi
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
o Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
o 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.
o Neither the name of the Yoichi Hariguchi nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT
OWNER 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.
*/
#include <assert.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include "backupfs.h"
#include "error.h"
/* This is a recursive function.
*/
int
dirwalk (char* dir, bkupInfo* info)
{
DIR* pDir;
struct dirent* pEnt;
struct stat stbuf;
char* newdir; /* new (next) source directory */
char* bkupdir; /* backup directory */
assert(dir);
assert(info);
assert(info->bdir);
assert(info->func);
pDir = opendir(dir);
if (!pDir) {
errSysRet(("opendir(%s)", dir));
return 0;
}
if (chdir(dir)) {
errSysRet(("chdir(%s)", dir));
return 0;
}
for (pEnt = readdir(pDir); pEnt; pEnt = readdir(pDir)) {
if (lstat(pEnt->d_name, &stbuf)) {
errSysRet(("stat(%s)", pEnt->d_name));
continue;
}
switch (stbuf.st_mode & S_IFMT) {
case S_IFSOCK:
printf("%s/%s: socket ignored\n", dir, pEnt->d_name);
break;
case S_IFBLK:
printf("%s/%s: block device ignored\n", dir, pEnt->d_name);
break;
case S_IFCHR:
printf("%s/%s: character device ignored\n", dir, pEnt->d_name);
break;
case S_IFIFO:
printf("%s/%s: fifo ignored\n", dir, pEnt->d_name);
break;
case S_IFDIR:
if (strcmp(".", pEnt->d_name) == 0) {
break;
}
if (strcmp("..", pEnt->d_name) == 0) {
break;
}
bkupdir = malloc(info->blen +
strlen(dir) + strlen(pEnt->d_name) + 3);
if (!bkupdir) {
errSysRet(("%s/%s/%s: can't alloc memory",
info->bdir, dir, pEnt->d_name));
continue;
}
strcpy(bkupdir, info->bdir);
if (*dir != '/') {
strcat(bkupdir, "/");
}
strcat(bkupdir, dir);
strcat(bkupdir, "/");
strcat(bkupdir, pEnt->d_name);
newdir = bkupdir + info->blen;
if (!newDirectory(bkupdir, &stbuf, info)) {
errRet(("newDirectory(%s, 0x%08x)", bkupdir, stbuf.st_mode));
continue;
}
dirwalk(newdir, info); /* recursion */
free(bkupdir);
if (chdir(dir)) {
errSysRet(("chdir(%s)", dir));
return 0;
}
break;
case S_IFLNK:
case S_IFREG:
info->ctime = stbuf.st_ctime;
info->mtime = stbuf.st_mtime;
info->stbuf = &stbuf;
(*info->func)(dir, pEnt->d_name, info);
break;
default:
errRet(("%s/%s: unknown type (0x%x) ignored\n",
dir, pEnt->d_name, stbuf.st_mode & S_IFMT));
break;
}
}
if (closedir(pDir)) {
errSysRet(("closedir(%d)", dir));
}
return 1;
}