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LibC: Implement flock(2) using fcntl's F_SETLK

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While flock is not a posix interface, it exists on linux and all BSDs as
far as I am aware.
This commit is contained in:
Peter Elliott 2021-07-18 23:55:13 -06:00 • committed by Ali Mohammad Pur
parent 3fa2816642
commit 2ce8cca7b5
3 changed files with 40 additions and 0 deletions
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13
Userland/Libraries/LibC/sys/file.h
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@ -5,3 +5,16 @@
*/
#pragma once
#include <sys/cdefs.h>
__BEGIN_DECLS
#define LOCK_SH 0
#define LOCK_EX 1
#define LOCK_UN 2
#define LOCK_NB (1 << 2)
int flock(int fd, int operation);
__END_DECLS