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/*
* Copyright RedHat Inc. 2009
*
* Authors: Jan Safranek <jsafrane@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include "tools-common.h"
int main(int argc, char *argv[])
{
int ret = 0;
int i, j;
char c;
int flags = 0;
int final_ret = 0;
struct cgroup_group_spec *cgroup_list[CG_HIER_MAX];
struct cgroup *cgroup;
struct cgroup_controller *cgc;
if (argc < 2) {
fprintf(stderr, "Usage is %s [-r] "
"<list of controllers>:<relative path to cgroup> "
"[...]\n",
argv[0]);
return -1;
}
memset(cgroup_list, 0, sizeof(cgroup_list));
/*
* Parse arguments
*/
while ((c = getopt(argc, argv, "r")) > 0) {
switch (c) {
case 'r':
flags |= CGFLAG_DELETE_RECURSIVE;
break;
default:
fprintf(stderr, "%s: "
"invalid command line option\n",
argv[0]);
return -1;
break;
}
}
if (optind >= argc) {
fprintf(stderr, "%s: "
"no groups to delete\n",
argv[0]);
ret = -1;
goto err;
}
/* initialize libcg */
ret = cgroup_init();
if (ret) {
fprintf(stderr, "%s: "
"libcgroup initialization failed: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
/* parse groups on command line */
for (i = optind; i < argc; i++) {
ret = parse_cgroup_spec(cgroup_list, argv[i]);
if (ret != 0) {
fprintf(stderr, "%s: error parsing cgroup '%s'\n",
argv[0], argv[i]);
ret = -1;
goto err;
}
}
/* for each cgroup to delete */
for (i = 0; i < CG_HIER_MAX; i++) {
if (!cgroup_list[i])
break;
/* create the new cgroup structure */
cgroup = cgroup_new_cgroup(cgroup_list[i]->path);
if (!cgroup) {
ret = ECGFAIL;
fprintf(stderr, "%s: can't create new cgroup: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
/* add controllers to the cgroup */
j = 0;
while (cgroup_list[i]->controllers[j]) {
cgc = cgroup_add_controller(cgroup,
cgroup_list[i]->controllers[j]);
if (!cgc) {
ret = ECGFAIL;
fprintf(stderr, "%s: "
"controller %s can't be added\n",
argv[0],
cgroup_list[i]->controllers[j]);
cgroup_free(&cgroup);
goto err;
}
j++;
}
ret = cgroup_delete_cgroup_ext(cgroup, flags);
/*
* Remember the errors and continue, try to remove all groups.
*/
if (ret != 0) {
fprintf(stderr, "%s: cannot remove group '%s': %s\n",
argv[0], cgroup->name,
cgroup_strerror(ret));
final_ret = ret;
}
cgroup_free(&cgroup);
}
ret = final_ret;
err:
for (i = 0; i < CG_HIER_MAX; i++) {
if (cgroup_list[i])
cgroup_free_group_spec(cgroup_list[i]);
}
return ret;
}
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