minix/servers/vfs/lock.h

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#ifndef __VFS_LOCK_H__
#define __VFS_LOCK_H__
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/* This is the file locking table. Like the filp table, it points to the
* inode table, however, in this case to achieve advisory locking.
*/
EXTERN struct file_lock {
short lock_type; /* F_RDLOCK or F_WRLOCK; 0 means unused slot */
pid_t lock_pid; /* pid of the process holding the lock */
struct vnode *lock_vnode;
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off_t lock_first; /* offset of first byte locked */
off_t lock_last; /* offset of last byte locked */
} file_lock[NR_LOCKS];
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#endif