Removed balbir

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>



git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@11 4f4bb910-9a46-0410-90c8-c897d4f1cd53

1 files changed, 0 insertions, 325 deletions

diff --git a/balbir/api.c b/balbir/api.c
deleted file mode 100644
index df594ea..0000000
--- a/balbir/api.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * Copyright IBM Corporation. 2007
- *
- * Author:	Dhaval Giani <dhaval@linux.vnet.ibm.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.
- *
- * TODOs:
- *	1. Convert comments to Docbook style.
- *	2. Add more APIs for the control groups.
- *	3. Handle the configuration related APIs.
- *	4. Error handling.
- *
- * Code initiated and designed by Dhaval Giani. All faults are most likely
- * his mistake.
- */
-
-#include <errno.h>
-#include <libcg.h>
-#include <mntent.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-
-static char MOUNT_POINT[FILENAME_MAX];
-
-int cg_init()
-{
-	FILE *proc_mount;
-	struct mntent *ent;
-
-	proc_mount = fopen("/proc/mounts", "r");
-	ent = getmntent(proc_mount);
-
-	while (strcmp(ent->mnt_fsname,"cgroup") != 0) {
-		ent = getmntent(proc_mount);
-		if (ent == NULL)
-			return ECGROUPNOTMOUNTED;
-	}
-	strcpy(MOUNT_POINT, ent->mnt_dir);
-	fclose(proc_mount);
-	return 0;
-}
-
-static int cg_test_mounted_fs()
-{
-	FILE *proc_mount;
-	struct mntent *ent;
-
-	proc_mount = fopen("/proc/mounts", "r");
-	if (proc_mount == NULL) {
-		return -1;
-	}
-	ent = getmntent(proc_mount);
-
-	while (strcmp(ent->mnt_fsname, "cgroup") !=0) {
-		ent = getmntent(proc_mount);
-		if (ent == NULL)
-			return 0;
-	}
-	fclose(proc_mount);
-	return 1;
-}
-
-static inline pid_t cg_gettid()
-{
-	return syscall(__NR_gettid);
-}
-
-static char* cg_build_path(char *name, char *path)
-{
-	strcpy(path, MOUNT_POINT);
-	strcat(path, name);
-	strcat(path, "/");
-	return path;
-}
-
-/** cg_attach_task_pid is used to assign tasks to a cgroup.
- *  struct cgroup *cgroup: The cgroup to assign the thread to.
- *  pid_t tid: The thread to be assigned to the cgroup.
- *
- *  returns 0 on success.
- *  returns ECGROUPNOTOWNER if the caller does not have access to the cgroup.
- *  returns ECGROUPNOTALLOWED for other causes of failure.
- */
-int cg_attach_task_pid(struct cgroup *cgroup, pid_t tid)
-{
-	char path[FILENAME_MAX];
-	FILE *tasks;
-
-	if (cgroup == NULL)
-		strcpy(path, MOUNT_POINT);
-	else {
-		cg_build_path(cgroup->name, path);
-	}
-
-	strcat(path, "/tasks");
-
-	tasks = fopen(path, "w");
-	if (!tasks) {
-		switch (errno) {
-		case EPERM:
-			return ECGROUPNOTOWNER;
-		default:
-			return ECGROUPNOTALLOWED;
-		}
-	}
-	fprintf(tasks, "%d", tid);
-	fclose(tasks);
-
-	return 0;
-
-}
-
-/** cg_attach_task is used to attach the current thread to a cgroup.
- *  struct cgroup *cgroup: The cgroup to assign the current thread to.
- *
- *  See cg_attach_task_pid for return values.
- */
-int cg_attach_task(struct cgroup *cgroup)
-{
-	pid_t tid = cg_gettid();
-	int error;
-
-	error = cg_attach_task_pid(cgroup, tid);
-
-	return error;
-}
-
-/*
- * create_control_group()
- * This is the basic function used to create the control group. This function
- * just makes the group. It does not set any permissions, or any control values.
- * The argument path is the fully qualified path name to make it generic.
- */
-static int cg_create_control_group(char *path)
-{
-	int error;
-	if (!cg_test_mounted_fs())
-		return ECGROUPNOTMOUNTED;
-	error = mkdir(path, 0700);
-	if (!error) {
-		switch(errno) {
-		case EPERM:
-			return ECGROUPNOTOWNER;
-		default:
-			return ECGROUPNOTALLOWED;
-		}
-	}
-	return error;
-}
-
-/*
- * set_control_value()
- * This is the low level function for putting in a value in a control file.
- * This function takes in the complete path and sets the value in val in that
- * file.
- *
- * TODO:
- * At this point I am not sure what all values the control file can take. So
- * I put in an int arg. But this has to be made much more robust.
- */
-static int cg_set_control_value(char *path, char *val)
-{
-	int error;
-	FILE *control_file;
-	if (!cg_test_mounted_fs())
-		return ECGROUPNOTMOUNTED;
-
-	control_file = fopen(path, "a");
-
-	if (!control_file) {
-		if (errno == EPERM) {
-			/*
-			 * We need to set the correct error value, does the
-			 * group exist but we don't have the subsystem
-			 * mounted at that point, or is it that the group
-			 * does not exist. So we check if the tasks file
-			 * exist. Before that, we need to extract the path.
-			 */
-			int len = strlen(path);
-
-			while (*(path+len) != '/')
-				len--;
-			*(path+len+1) = '\0';
-			strcat(path, "tasks");
-			control_file = fopen(path, "r");
-			if (!control_file) {
-				if (errno == ENOENT)
-					return ECGROUPSUBSYSNOTMOUNTED;
-			}
-			fclose(control_file);
-			return ECGROUPNOTALLOWED;
-		}
-	}
-
-	fprintf(control_file, "%s", val);
-	fclose(control_file);
-	return 0;
-}
-
-/** cg_modify_cgroup modifies the cgroup control files.
- * struct cgroup *cgroup: The name will be the cgroup to be modified.
- * The values will be the values to be modified, those not mentioned
- * in the structure will not be modified.
- *
- * The uids cannot be modified yet.
- *
- * returns 0 on success.
- *
- */
-
-int cg_modify_cgroup(struct cgroup *cgroup)
-{
-	char path[FILENAME_MAX], base[FILENAME_MAX];
-	int i;
-	int error;
-
-	cg_build_path(cgroup->name, base);
-
-	for (i = 0; i < CG_CONTROLLER_MAX && cgroup->controller[i];
-						i++, strcpy(path, base)) {
-		int j;
-		for(j = 0; j < CG_NV_MAX &&
-			cgroup->controller[i]->values[j];
-			j++, strcpy(path, base)) {
-			strcat(path, cgroup->controller[i]->values[j]->name);
-			error = cg_set_control_value(path,
-				cgroup->controller[i]->values[j]->value);
-			if (error)
-				goto err;
-		}
-	}
-	return 0;
-err:
-	return error;
-
-}
-
-/** create_cgroup creates a new control group.
- * struct cgroup *cgroup: The control group to be created
- *
- * returns 0 on success.
- */
-int cg_create_cgroup(struct cgroup *cgroup)
-{
-	char path[FILENAME_MAX], base[FILENAME_MAX];
-	int i;
-	int error;
-
-	if (MOUNT_POINT == NULL)
-		return ECGROUPNOTMOUNTED;
-
-	cg_build_path(cgroup->name, path);
-
-	error = cg_create_control_group(path);
-
-	strcpy(base, path);
-
-	for (i = 0; i < CG_CONTROLLER_MAX && cgroup->controller[i];
-						i++, strcpy(path, base)) {
-		int j;
-		for(j = 0; j < CG_NV_MAX && cgroup->controller[i]->values[j];
-						j++, strcpy(path, base)) {
-			strcat(path, cgroup->controller[i]->values[j]->name);
-			error = cg_set_control_value(path,
-					cgroup->controller[i]->values[j]->value);
-			chown(path, cgroup->control_uid, cgroup->control_gid);
-			if (!error)
-				return error;
-		}
-	}
-	strcpy(path, base);
-	strcat(path, "tasks");
-	chown(path, cgroup->tasks_uid, cgroup->tasks_gid);
-	return error;
-}
-
-/** cg_delete cgroup deletes a control group.
- *  struct cgroup *cgroup takes the group which is to be deleted.
- *
- *  returns 0 on success.
- */
-int cg_delete_cgroup(struct cgroup *cgroup)
-{
-	FILE *delete_tasks, *base_tasks;
-	int tids;
-	char path[FILENAME_MAX];
-	int error;
-
-	strcpy(path, MOUNT_POINT);
-	strcat(path,"/tasks");
-
-	base_tasks = fopen(path, "w");
-
-	cg_build_path(cgroup->name, path);
-	strcat(path,"tasks");
-
-	delete_tasks = fopen(path, "r");
-
-	while (!feof(delete_tasks)) {
-		fscanf(delete_tasks, "%d", &tids);
-		fprintf(base_tasks, "%d", tids);
-	}
-
-	cg_build_path(cgroup->name, path);
-
-	error = rmdir(path);
-
-	if (!error) {
-			return ECGROUPNOTALLOWED;
-		}
-
-	return error;
-}