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Renamed lxc_cgroup
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dlezcano
parent
5f58350a16
commit
0a5acaf2e1
@ -1,189 +0,0 @@
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/*
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* lxc: linux Container library
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*
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* (C) Copyright IBM Corp. 2007, 2008
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*
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* Authors:
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* Daniel Lezcano <dlezcano at fr.ibm.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#undef _GNU_SOURCE
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#include <stdlib.h>
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#include <errno.h>
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#include <mntent.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <sys/inotify.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <lxc.h>
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#include <log.h>
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#define MAXPRIOLEN 24
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#define MTAB "/etc/mtab"
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static int get_cgroup_mount(const char *mtab, char *mnt)
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{
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struct mntent *mntent;
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FILE *file = NULL;
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int err = -1;
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file = setmntent(mtab, "r");
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if (!file) {
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lxc_log_syserror("failed to open %s", mtab);
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goto out;
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}
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while ((mntent = getmntent(file))) {
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if (strcmp(mntent->mnt_fsname, "cgroup"))
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continue;
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strcpy(mnt, mntent->mnt_dir);
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err = 0;
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break;
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};
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fclose(file);
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out:
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return err;
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}
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int lxc_link_nsgroup(const char *name, pid_t pid)
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{
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char *lxc, *nsgroup, cgroup[MAXPATHLEN];
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int ret;
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if (get_cgroup_mount(MTAB, cgroup)) {
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lxc_log_info("cgroup is not mounted");
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return -1;
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}
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asprintf(&lxc, LXCPATH "/%s/nsgroup", name);
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asprintf(&nsgroup, "%s/%d", cgroup, pid);
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unlink(lxc);
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ret = symlink(nsgroup, lxc);
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if (ret)
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lxc_log_syserror("failed to create symlink %s->%s",
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nsgroup, lxc);
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free(lxc);
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free(nsgroup);
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return ret;
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}
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int lxc_unlink_nsgroup(const char *name)
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{
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char *nsgroup;
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int ret;
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asprintf(&nsgroup, LXCPATH "/%s/nsgroup", name);
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ret = unlink(nsgroup);
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free(nsgroup);
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return ret;
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}
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int lxc_set_priority(const char *name, int priority)
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{
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int fd;
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char *path = NULL, *prio = NULL;
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asprintf(&path, LXCPATH "/%s/nsgroup/cpu.shares", name);
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fd = open(path, O_WRONLY);
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if (fd < 0) {
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lxc_log_syserror("failed to open '%s'", path);
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goto out;
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}
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asprintf(&prio, "%d", priority);
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if (write(fd, prio, strlen(prio) + 1) < 0) {
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lxc_log_syserror("failed to write to '%s'", path);
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close(fd);
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goto out;
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}
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close(fd);
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out:
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free(path);
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free(prio);
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return 0;
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}
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int lxc_get_priority(const char *name, int *priority)
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{
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int fd, ret = -1;
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char *path, prio[MAXPRIOLEN];
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asprintf(&path, LXCPATH "/%s/nsgroup/cpu.shares", name);
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fd = open(path, O_RDONLY);
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if (fd < 0) {
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lxc_log_syserror("failed to open '%s'", path);
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goto out;
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}
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if (read(fd, prio, MAXPRIOLEN) < 0) {
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lxc_log_syserror("failed to read from '%s'", path);
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close(fd);
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goto out;
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}
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close(fd);
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*priority = atoi(prio);
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ret = 0;
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out:
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free(path);
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return 0;
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}
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int lxc_set_memory(const char *name, size_t memmax)
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{
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return 0;
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}
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int lxc_get_memory(const char *name, size_t *memmax)
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{
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return 0;
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}
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int lxc_get_memstat(const char *name, struct lxc_mem_stat *memstat)
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{
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return 0;
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}
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int lxc_set_cpuset(const char *name, long *cpumask, int len, int shared)
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{
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return 0;
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}
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int lxc_get_cpuset(const char *name, long *cpumask, int len, int *shared)
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{
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return 0;
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}
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int lxc_get_cpu_usage(const char *name, long long *usage)
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{
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return 0;
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}
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@ -1,30 +0,0 @@
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/*
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* lxc: linux Container library
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*
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* (C) Copyright IBM Corp. 2007, 2008
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*
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* Authors:
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* Daniel Lezcano <dlezcano at fr.ibm.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _cgroup_h
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#define _cgroup_h
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int lxc_get_cgroup_mount(const char *mtab, char *mnt);
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int lxc_link_nsgroup(const char *name, pid_t pid);
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int lxc_unlink_nsgroup(const char *name);
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#endif
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