Add v0.1b tag

git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/tags/v0.1b@49 4f4bb910-9a46-0410-90c8-c897d4f1cd53

1 files changed, 236 insertions, 0 deletions

diff --git a/wrapper.c b/wrapper.c
new file mode 100644
index 0000000..916710f
--- /dev/null
+++ b/wrapper.c
@@ -0,0 +1,236 @@
+/*
+ * Copyright IBM Corporation. 2008
+ *
+ * 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.
+ *
+ * Code initiated and designed by Dhaval Giani. All faults are most likely
+ * his mistake.
+ */
+
+#include <libcgroup.h>
+#include <libcgroup-internal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+struct cgroup *cgroup_new_cgroup(const char *name, uid_t tasks_uid,
+		gid_t tasks_gid, uid_t control_uid, gid_t control_gid)
+{
+	struct cgroup *cgroup = (struct cgroup *)
+					malloc(sizeof(struct cgroup));
+
+	if (!cgroup)
+		return NULL;
+
+	strncpy(cgroup->name, name, sizeof(cgroup->name));
+	cgroup->tasks_uid = tasks_uid;
+	cgroup->tasks_gid = tasks_gid;
+	cgroup->control_uid = control_uid;
+	cgroup->control_gid = control_gid;
+	cgroup->index = 0;
+	cgroup->controller[cgroup->index] = NULL;
+
+	return cgroup;
+}
+
+struct cgroup_controller *cgroup_add_controller(struct cgroup *cgroup,
+							const char *name)
+{
+	int i;
+	struct cgroup_controller *controller;
+
+	/*
+	 * Still not sure how to handle the failure here.
+	 */
+	if (cgroup->index >= CG_CONTROLLER_MAX)
+		return NULL;
+
+	/*
+	 * Still not sure how to handle the failure here.
+	 */
+	for (i = 0; i < cgroup->index; i++) {
+		if (strncmp(name, cgroup->controller[i]->name,
+				sizeof(cgroup->controller[i]->name)) == 0)
+			return NULL;
+	}
+
+	controller = (struct cgroup_controller *)
+				malloc(sizeof(struct cgroup_controller));
+
+	if (!controller)
+		return NULL;
+
+	strncpy(controller->name, name, sizeof(controller->name));
+	controller->index = 0;
+	controller->values[controller->index] = NULL;
+
+	cgroup->controller[cgroup->index] = controller;
+	cgroup->index++;
+
+	return controller;
+}
+
+void cgroup_free(struct cgroup **cgroup)
+{
+	int i, j;
+	struct cgroup *cg = *cgroup;
+
+	/*
+	 * Passing NULL pointers is OK. We just return.
+	 */
+	if (!cg)
+		return;
+
+	for (i = 0; i < cg->index; i++) {
+		for (j = 0; j < cg->controller[i]->index; j++)
+			free(cg->controller[i]->values[j]);
+		free(cg->controller[i]);
+	}
+
+	free(cg);
+	*cgroup = NULL;
+}
+
+int cgroup_add_value_string(struct cgroup_controller *controller,
+					const char *name, const char *value)
+{
+	int i;
+	struct control_value *cntl_value = (struct control_value *)
+					malloc(sizeof(struct control_value));
+
+	if (!cntl_value)
+		return ECGCONTROLLERCREATEFAILED;
+
+	if (controller->index >= CG_VALUE_MAX)
+		return ECGMAXVALUESEXCEEDED;
+
+	for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) {
+		if (strncmp(controller->values[controller->index]->name, name,
+		sizeof(controller->values[controller->index]->name)) == 0)
+			return ECGVALUEEXISTS;
+	}
+
+
+	strncpy(cntl_value->name, name, sizeof(cntl_value->name));
+	strncpy(cntl_value->value, value, sizeof(cntl_value->value));
+	controller->values[controller->index] = cntl_value;
+	controller->index++;
+
+	return 0;
+}
+
+int cgroup_add_value_int64(struct cgroup_controller *controller,
+					const char *name, int64_t value)
+{
+	int i;
+	unsigned ret;
+	struct control_value *cntl_value = (struct control_value *)
+					malloc(sizeof(struct control_value));
+
+	if (!cntl_value)
+		return ECGCONTROLLERCREATEFAILED;
+
+
+	if (controller->index >= CG_VALUE_MAX)
+		return ECGMAXVALUESEXCEEDED;
+
+	for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) {
+		if (strncmp(controller->values[controller->index]->name, name,
+		   sizeof(controller->values[controller->index]->name)) == 0)
+			return ECGVALUEEXISTS;
+	}
+
+	strncpy(cntl_value->name, name,
+			sizeof(cntl_value->name));
+	ret = snprintf(cntl_value->value,
+	  sizeof(cntl_value->value), "%lld", value);
+
+	if (ret >= sizeof(cntl_value->value))
+		return ECGINVAL;
+
+	controller->values[controller->index] = cntl_value;
+	controller->index++;
+
+	return 0;
+
+}
+
+int cgroup_add_value_uint64(struct cgroup_controller *controller,
+					const char *name, u_int64_t value)
+{
+	int i;
+	unsigned ret;
+	struct control_value *cntl_value = (struct control_value *)
+					malloc(sizeof(struct control_value));
+
+	if (!cntl_value)
+		return ECGCONTROLLERCREATEFAILED;
+
+
+	if (controller->index >= CG_VALUE_MAX)
+		return ECGMAXVALUESEXCEEDED;
+
+	for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) {
+		if (strncmp(controller->values[controller->index]->name, name,
+		   sizeof(controller->values[controller->index]->name)) == 0)
+			return ECGVALUEEXISTS;
+	}
+
+	strncpy(cntl_value->name, name,	sizeof(cntl_value->name));
+	ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "%llu", value);
+
+	if (ret >= sizeof(cntl_value->value))
+		return ECGINVAL;
+
+	controller->values[controller->index] = cntl_value;
+	controller->index++;
+
+	return 0;
+
+}
+
+int cgroup_add_value_bool(struct cgroup_controller *controller,
+						const char *name, bool value)
+{
+	int i;
+	unsigned ret;
+	struct control_value *cntl_value = (struct control_value *)
+					malloc(sizeof(struct control_value));
+
+	if (!cntl_value)
+		return ECGCONTROLLERCREATEFAILED;
+
+
+	if (controller->index >= CG_VALUE_MAX)
+		return ECGMAXVALUESEXCEEDED;
+
+	for (i = 0; i < controller->index && i < CG_VALUE_MAX; i++) {
+		if (strncmp(controller->values[controller->index]->name, name,
+		  sizeof(controller->values[controller->index]->name)) == 0)
+			return ECGVALUEEXISTS;
+	}
+
+	strncpy(cntl_value->name, name, sizeof(cntl_value->name));
+
+	if (value)
+		ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "1");
+	else
+		ret = snprintf(cntl_value->value, sizeof(cntl_value->value), "0");
+
+	if (ret >= sizeof(cntl_value->value))
+		return ECGINVAL;
+
+	controller->values[controller->index] = cntl_value;
+	controller->index++;
+
+	return 0;
+}