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flock --> fcntl

This commit is contained in:
Vadim B. Mikheev 1998-09-10 04:07:59 +00:00
parent f4c222f986
commit ee00b75441
1 changed files with 14 additions and 4 deletions
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18
src/backend/libpq/pqcomm.c
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@ -1,4 +1,4 @@
/*-------------------------------------------------------------------------
/*-------------------------------------------------------------------------
*
* pqcomm.c--
* Communication functions between the Frontend and the Backend
@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/libpq/pqcomm.c,v 1.53 1998/09/01 04:28:51 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/libpq/pqcomm.c,v 1.54 1998/09/10 04:07:59 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -562,7 +562,11 @@ StreamServerPort(char *hostName, short portName, int *fdP)
*/
if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0)
{
if (flock(lock_fd, LOCK_EX | LOCK_NB) == 0)
struct flock lck;
lck.l_whence = SEEK_SET; lck.l_start = lck.l_len = 0;
lck.l_type = F_WRLCK;
if (fcntl(lock_fd, F_SETLK, &lck) == 0)
{
TPRINTF(TRACE_VERBOSE, "flock on %s, deleting", sock_path);
unlink(sock_path);
@ -607,7 +611,11 @@ StreamServerPort(char *hostName, short portName, int *fdP)
*/
if ((lock_fd = open(sock_path, O_RDONLY | O_NONBLOCK, 0666)) >= 0)
{
if (flock(lock_fd, LOCK_EX | LOCK_NB) != 0)
struct flock lck;
lck.l_whence = SEEK_SET; lck.l_start = lck.l_len = 0;
lck.l_type = F_WRLCK;
if (fcntl(lock_fd, F_SETLK, &lck) != 0)
TPRINTF(TRACE_VERBOSE, "flock error for %s", sock_path);
}
}
@ -790,3 +798,5 @@ pq_putncharlen(char *s, int n)
}
#endif