Hi ,
Here is some information for you ....
there is a function in unistd.h
int lockf(int fildes, int function, off_t size);
fildes is the open file descriptor opened in the
function can be any one of the following..
0 ---Unlock a locked a region
1 ---Lock a unlocked region
2 ---test and unlock a region returns 0 if it is acessible and -1 if it
is not
3 ---test a region
size is number of bytes of the file to be locked
the differnce between fn 1 and fn 2 is that 1 will sleep until lock is
obtained
Bye,
Sudhir Shenoy .P.
IT Solutions (India ) Pvt Ltd
-----Original Message-----
From: G A Abhay [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 01, 2000 6:26 PM
To: [EMAIL PROTECTED]
Subject: [LI] lock function in unix
>Is there any lock function (in C) to lock files on a >linux machine
>Does the kernel provide such system calls at all?
>This should prevent other processes from accessing the >same file.
abhay
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