lxclock.h

/* SPDX-License-Identifier: LGPL-2.1+ */
 
#ifndef __LXC_LXCLOCK_H
#define __LXC_LXCLOCK_H
 
#include "config.h"
 
#include <fcntl.h>
#include <semaphore.h>
#include <string.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
 
#include "compiler.h"
 
#ifndef F_OFD_GETLK
#define F_OFD_GETLK 36
#endif
 
#ifndef F_OFD_SETLK
#define F_OFD_SETLK 37
#endif
 
#ifndef F_OFD_SETLKW
#define F_OFD_SETLKW    38
#endif
 
#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; 
};

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

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

__hidden extern int lxcunlock(struct lxc_lock *lock);

__hidden extern void lxc_putlock(struct lxc_lock *lock);

__hidden extern void process_lock(void);

__hidden extern void process_unlock(void);
 
struct lxc_container;

__hidden extern int container_mem_lock(struct lxc_container *c);

__hidden extern void container_mem_unlock(struct lxc_container *c);

__hidden extern int container_disk_lock(struct lxc_container *c);

__hidden extern void container_disk_unlock(struct lxc_container *c);
 
#endif