struct cgroupfs_root;
struct cgroup_subsys;
struct inode;
+struct cgroup;
extern int cgroup_init_early(void);
extern int cgroup_init(void);
extern void cgroup_init_smp(void);
extern void cgroup_lock(void);
+extern bool cgroup_lock_live_group(struct cgroup *cgrp);
extern void cgroup_unlock(void);
extern void cgroup_fork(struct task_struct *p);
extern void cgroup_fork_callbacks(struct task_struct *p);
* subsystem, followed by a period */
char name[MAX_CFTYPE_NAME];
int private;
+
+ /*
+ * If non-zero, defines the maximum length of string that can
+ * be passed to write_string; defaults to 64
+ */
+ size_t max_write_len;
+
int (*open)(struct inode *inode, struct file *file);
ssize_t (*read)(struct cgroup *cgrp, struct cftype *cft,
struct file *file,
*/
int (*write_s64)(struct cgroup *cgrp, struct cftype *cft, s64 val);
+ /*
+ * write_string() is passed a nul-terminated kernelspace
+ * buffer of maximum length determined by max_write_len.
+ * Returns 0 or -ve error code.
+ */
+ int (*write_string)(struct cgroup *cgrp, struct cftype *cft,
+ const char *buffer);
/*
* trigger() callback can be used to get some kick from the
* userspace, when the actual string written is not important
return task_subsys_state(task, subsys_id)->cgroup;
}
-int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *ss);
+int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *ss,
+ char *nodename);
/* A cgroup_iter should be treated as an opaque object */
struct cgroup_iter {