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/* ----------------------------------------------------------------------- *
*
* Copyright 2004-2006 H. Peter Anvin - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* Simple program which does the same thing as rm -rf, except it takes
* no options and can therefore not get confused by filenames starting
* with -. Similarly, an empty list of inputs is assumed to mean don't
* do anything.
*/
#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
static const char *program;
static int nuke(const char *what);
static int nuke_dirent(int len, const char *dir, const char *name)
{
int bytes = len + strlen(name) + 2;
char path[bytes];
int xlen;
xlen = snprintf(path, bytes, "%s/%s", dir, name);
assert(xlen < bytes);
return nuke(path);
}
/* Wipe the contents of a directory, but not the directory itself */
static int nuke_dir(const char *what)
{
int len = strlen(what);
DIR *dir;
struct dirent *d;
int err = 0;
dir = opendir(what);
if (!dir) {
/* EACCES means we can't read it. Might be empty and removable;
if not, the rmdir() in nuke() will trigger an error. */
return (errno == EACCES) ? 0 : errno;
}
while ((d = readdir(dir))) {
/* Skip . and .. */
if (d->d_name[0] == '.' &&
(d->d_name[1] == '\0' ||
(d->d_name[1] == '.' && d->d_name[2] == '\0')))
continue;
err = nuke_dirent(len, what, d->d_name);
if (err) {
closedir(dir);
return err;
}
}
closedir(dir);
return 0;
}
static int nuke(const char *what)
{
int rv;
int err = 0;
rv = unlink(what);
if (rv < 0) {
if (errno == EISDIR) {
/* It's a directory. */
err = nuke_dir(what);
if (!err)
rmdir(what);
}
}
return 0;
}
int main(int argc, char *argv[])
{
int i;
program = argv[0];
for (i = 1; i < argc; i++)
nuke(argv[i]);
return 0;
}
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