Topic       : TOS - The Operating System
Author      : 
Version     : tos.hyp (December 19, 2008)
Subject     : Programmieren/Atari
Nodes       : 3010
Index Size  : 93790
HCP-Version : 5
Compiled on : Atari
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View Ref-File5.21.19  flock, Fcntl                                              TOS

struct flock
{
    int16_t  l_type;     /* Type of lock                 */
    int16_t  l_whence;   /* SEEK_SET, SEEK_CUR, SEEK_END */
    int32_t  l_start;    /* Start of the locking region  */
    int32_t  l_len;      /* Length of the locking region */
    int16_t  l_pid;      /* PID of the locking process   */
};

Note: Possible values for l_type are: 0 = Read locking, 1 = Write 
locking as well as 3 = No locking.