flock Struct Reference

File segment locking structure used with F_GETLK, F_SETLK, and F_SETLKW. More...

#include <zephyr/posix/fcntl.h>

Data Fields
short	l_type
	Lock type: F_RDLCK, F_WRLCK, or F_UNLCK.
short	l_whence
	How to interpret l_start: SEEK_SET, SEEK_CUR, SEEK_END.
long	l_start
	Byte offset to start of locked region.
long	l_len
	Length of locked region in bytes (0 = to EOF).
pid_t	l_pid
	PID of the process holding the lock (F_GETLK output only).

Detailed Description

File segment locking structure used with F_GETLK, F_SETLK, and F_SETLKW.

Definition at line 165 of file fcntl.h.

Field Documentation

l_len

long flock::l_len

Length of locked region in bytes (0 = to EOF).

Definition at line 169 of file fcntl.h.

l_pid

pid_t flock::l_pid

PID of the process holding the lock (F_GETLK output only).

Definition at line 170 of file fcntl.h.

l_start

long flock::l_start

Byte offset to start of locked region.

Definition at line 168 of file fcntl.h.

l_type

short flock::l_type

Lock type: F_RDLCK, F_WRLCK, or F_UNLCK.

Definition at line 166 of file fcntl.h.

l_whence

short flock::l_whence

How to interpret l_start: SEEK_SET, SEEK_CUR, SEEK_END.

Definition at line 167 of file fcntl.h.

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The documentation for this struct was generated from the following file:

• zephyr/posix/fcntl.h