Renamed lxc_cgroup

src/liblxc/cgroup.c

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

src/liblxc/cgroup.h

-/*
- * lxc: linux Container library
- *
- * (C) Copyright IBM Corp. 2007, 2008
- *
- * Authors:
- * Daniel Lezcano <dlezcano at fr.ibm.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _cgroup_h
-#define _cgroup_h
-
-int lxc_get_cgroup_mount(const char *mtab, char *mnt);
-int lxc_link_nsgroup(const char *name, pid_t pid);
-int lxc_unlink_nsgroup(const char *name);
-
-#endif