diff options
Diffstat (limited to 'balbir/libcgroup.h')
| -rw-r--r-- | balbir/libcgroup.h | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/balbir/libcgroup.h b/balbir/libcgroup.h deleted file mode 100644 index 0913623..0000000 --- a/balbir/libcgroup.h +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright IBM Corporation. 2007 - * - * Author: Balbir Singh <balbir@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. - * - */ - -#ifndef _LIBCG_H -#define _LIBCG_H - -#include <features.h> - -__BEGIN_DECLS - -#include <grp.h> -#include <linux/types.h> -#include <stdbool.h> -#include <stdio.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif - -#ifndef __USE_GNU -#define __USE_GNU -#endif - -/* Maximum number of mount points/controllers */ -#define MAX_MNT_ELEMENTS 8 -/* Estimated number of groups created */ -#define MAX_GROUP_ELEMENTS 128 - -#ifdef DEBUG -#define dbg(x...) printf(x) -#else -#define dbg(x...) do {} while(0) -#endif - -/* - * NOTE: Wide characters are not supported at the moment. Wide character support - * would require us to use a scanner/parser that can parse beyond ASCII - */ - -/* - * These data structures are heavily controller dependent, which means - * any changes (additions/removal) of configuration items would have to - * be reflected in this library. We might implement a plugin - * infrastructure, so that we can deal with such changes with ease. - */ - -struct cpu_controller { - /*TODO: Add the cpu.usage file here, also need to automate this.*/ - char *shares; /* Having strings helps us write them to files */ - /* - * XX: No it does not make a difference. It requires a fprintf anyway - * so it needs the qualifier. - */ -}; - -struct cg_group { - char *name; - uid_t tasks_uid; - gid_t tasks_gid; - uid_t admin_uid; - gid_t admin_gid; - struct cpu_controller cpu_config; -}; - -/* - * A singly linked list suffices since we don't expect too many mount points - */ -struct mount_table { - char *options; /* Name(s) of the controller */ - char *mount_point; /* The place where the controller is mounted */ - struct mount_table *next; -}; - -/* - * Maintain a list of all group names. These will be used during cleanup - */ -struct list_of_names { - char *name; - struct list_of_names *next; -}; - -enum cg_msg_type { - CG_MSG_LOAD_FILE, - CG_MSG_UNLOAD_FILE, - CG_MSG_ERR, - CG_MSG_DONE, -}; - -enum cgroup_errors { - ECGROUPNOTCOMPILED=50000, - ECGROUPNOTMOUNTED, - ECGROUPNOTEXIST, - ECGROUPNOTCREATED, - ECGROUPSUBSYSNOTMOUNTED, - ECGROUPNOTOWNER, - ECGROUPMULTIMOUNTED,/* Controllers bound to different mount points */ - ECGROUPNOTALLOWED, /* This is the stock error. Default error. */ - ECGMAXVALUESEXCEEDED, - ECGCONTROLLEREXISTS, - ECGVALUEEXISTS, - ECGINVAL, - ECGCONTROLLERCREATEFAILED, -}; - -#define CG_MAX_MSG_SIZE 256 -#define CG_SERVER_MSG_PATH "/tmp/control_group" -#define CG_BACKLOG 5 - -/* Message's exchanged between server and client */ -struct cg_msg { - enum cg_msg_type type; - char buf[CG_MAX_MSG_SIZE]; -}; - -/* Function Prototypes start here */ -int cg_init_group_and_mount_info(void); -int cg_insert_into_mount_table(const char *name, const char *mount_point); -void cg_cleanup_mount_table(void); -int cg_group_admin_perm(char *perm_type, char *value); -int cg_group_task_perm(char *perm_type, char *value); -int cg_parse_controller_options(char *controller, char *name_value); -int cg_insert_group(const char *group_name); -int chown_recursive(const char* path, uid_t owner, gid_t group); -int cg_make_directory(struct cg_group *cg_group, const char *group_path); -char *cg_build_group_path(struct cg_group *cg_group, - struct mount_table *mount_info); -int cg_mount_controllers(void); -int cg_unmount_controllers(void); -int cg_load_config(const char *pathname); -void cg_unload_current_config(void); - -#define CG_NV_MAX 100 -#define CG_CONTROLLER_MAX 100 -#define CG_VALUE_MAX 100 -/* Functions and structures that can be used by the application*/ -struct cgroup; -struct cgroup_controller; - -int cgroup_init(void); -int cgroup_attach_task(struct cgroup *cgroup); -int cgroup_modify_cgroup(struct cgroup *cgroup); -int cgroup_create_cgroup(struct cgroup *cgroup, int ignore_ownership); -int cgroup_delete_cgroup(struct cgroup *cgroup, int ignore_migration); -int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid); - -/* The wrappers for filling libcg structures */ - -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_controller *cgroup_add_controller(struct cgroup *cgroup, - const char *name); -void cgroup_free(struct cgroup **cgroup); -int cgroup_add_value_string(struct cgroup_controller *controller, - const char *name, const char *value); -int cgroup_add_value_int64(struct cgroup_controller *controller, - const char *name, int64_t value); -int cgroup_add_value_uint64(struct cgroup_controller *controller, - const char *name, u_int64_t value); -int cgroup_add_value_bool(struct cgroup_controller *controller, - const char *name, bool value); - -__END_DECLS - -#endif /* _LIBCG_H */ |