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clean_cache.c
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clean_cache.c
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/*-
* Copyright (c) 2015 Baptiste Daroussin <bapt@FreeBSD.org>
* 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
* in this position and unchanged.
* 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 THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/stat.h>
#include <assert.h>
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
#include "pkg.h"
#include "private/pkg.h"
#include "private/event.h"
static void
rm_rf(int basefd, const char *path)
{
int dirfd;
DIR *d;
struct dirent *e;
struct stat st;
if (basefd != -1) {
while (*path == '/')
path++;
dirfd = openat(basefd, path, O_DIRECTORY|O_CLOEXEC);
if (dirfd == -1) {
pkg_emit_errno("openat", path);
return;
}
} else {
dirfd = dup(pkg_get_cachedirfd());
if (dirfd == -1) {
pkg_emit_error("Cannot open the cache directory");
return;
}
}
d = fdopendir(dirfd);
while ((e = readdir(d)) != NULL) {
if (STREQ(e->d_name, ".") || STREQ(e->d_name, ".."))
continue;
if (fstatat(dirfd, e->d_name, &st, AT_SYMLINK_NOFOLLOW) != 0) {
pkg_emit_errno("fstatat", path);
continue;
}
if (S_ISDIR(st.st_mode))
rm_rf(dirfd, e->d_name);
else
unlinkat(dirfd, e->d_name, 0);
}
closedir(d);
if (basefd == -1)
return;
if (fstatat(basefd, path, &st, AT_SYMLINK_NOFOLLOW) != 0)
return;
unlinkat(basefd, path, S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0);
}
void
pkg_cache_full_clean(void)
{
if (!pkg_object_bool(pkg_config_get("AUTOCLEAN")))
return;
pkg_debug(1, "Cleaning up cachedir");
rm_rf(-1, NULL);
}