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/*
* Copyright (c) 2015 William Johansson <radar@radhuset.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.
*
* Based upon the pkg plugin zfssnap:
* Copyright (c) 2012 Marin Atanasov Nikolov <dnaeon@gmail.com>
*/
#include <stdio.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <spawn.h>
#include <pkg.h>
#define PLUGIN_NAME "etckeeper"
/* TODO: make configuration param? */
#define ETCKEEPER_PATH "/usr/local/bin/etckeeper"
extern char **environ;
struct pkg_plugin *self;
static int pre_install_hook(void *data, struct pkgdb *db);
static int post_install_hook(void *data, struct pkgdb *db);
int
pkg_plugin_init(struct pkg_plugin *p)
{
self = p;
pkg_plugin_set(p, PKG_PLUGIN_NAME, PLUGIN_NAME);
pkg_plugin_set(p, PKG_PLUGIN_DESC, "etckeeper plugin");
pkg_plugin_set(p, PKG_PLUGIN_VERSION, "1.0.0");
/* NOTE: upgrade/deinstall is regarded as install */
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_PRE_INSTALL, &pre_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_POST_INSTALL, &post_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_PRE_DEINSTALL, &pre_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_POST_DEINSTALL, &post_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_PRE_UPGRADE, &pre_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
if (pkg_plugin_hook_register(p, PKG_PLUGIN_HOOK_POST_UPGRADE, &post_install_hook) != EPKG_OK) {
pkg_plugin_error(self, "failed to hook into the library");
return (EPKG_FATAL);
}
return (EPKG_OK);
}
static int
call_etckeeper(char *arg)
{
int error, pstat;
pid_t pid;
char *argv[] = {
"etckeeper",
arg,
NULL,
};
if ((error = posix_spawn(&pid, ETCKEEPER_PATH, NULL, NULL,
__DECONST(char **, argv), environ)) != 0) {
errno = error;
pkg_plugin_errno(self, "Failed to spawn process", arg);
return (EPKG_FATAL);
}
while (waitpid(pid, &pstat, 0) == -1) {
if (errno != EINTR)
return (EPKG_FATAL);
}
if ((error = WEXITSTATUS(pstat)) != 0) {
pkg_plugin_error(self, "etckeeper failed with exit code %d", error);
return (EPKG_FATAL);
}
return (EPKG_OK);
}
static int
pre_install_hook(void *data, struct pkgdb *db)
{
return call_etckeeper("pre-install");
}
static int
post_install_hook(void *data, struct pkgdb *db)
{
return call_etckeeper("post-install");
}
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