lxclock.h

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#ifndef __LXC_LXCLOCK_H
#define __LXC_LXCLOCK_H

#include <fcntl.h>           /* For O_* constants */
#include <sys/stat.h>        /* For mode constants */
#include <sys/file.h>
#include <semaphore.h>
#include <string.h>
#include <time.h>

#define LXC_LOCK_ANON_SEM 1 
#define LXC_LOCK_FLOCK    2 
// private

struct lxc_lock {
    short type; 

    union {
        sem_t *sem; 

        struct {
            int   fd; 
            char *fname; 
        } f;
    } u; 
};

extern struct lxc_lock *lxc_newlock(const char *lxcpath, const char *name);

extern int lxclock(struct lxc_lock *lock, int timeout);

extern int lxcunlock(struct lxc_lock *lock);

extern void lxc_putlock(struct lxc_lock *lock);

extern void process_lock(void);

extern void process_unlock(void);

struct lxc_container;

extern int container_mem_lock(struct lxc_container *c);

extern void container_mem_unlock(struct lxc_container *c);

extern int container_disk_lock(struct lxc_container *c);

extern void container_disk_unlock(struct lxc_container *c);

#endif