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- /*
- * flock.c --
- *
- * Procedure to map from Unix flock system call to Sprite.
- *
- * Copyright 1987 Regents of the University of California
- * All rights reserved.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/flock.c,v 1.2 89/01/06 08:03:34 brent Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- #include "sprite.h"
- #include "fs.h"
- #include <bit.h>
-
- #include "compatInt.h"
- #include <sys/file.h>
- #include <errno.h>
- #include <stdlib.h>
-
-
- /*
- *----------------------------------------------------------------------
- *
- * flock --
- *
- * Procedure to map from Unix flock system call to Sprite Ioc_Lock/Unlock.
- *
- * Results:
- * UNIX_SUCCESS - the call was successful.
- * UNIX_ERROR - the call was not successful.
- * The actual error code stored in errno.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- flock(descriptor, operation)
- int descriptor; /* descriptor for stream to lock */
- int operation; /* flags for locking descriptor */
- {
- ReturnStatus status;
- int spriteLockOp = 0;
-
- if (operation & LOCK_EX) {
- spriteLockOp |= IOC_LOCK_EXCLUSIVE;
- } else if (operation & LOCK_SH) {
- spriteLockOp |= IOC_LOCK_SHARED;
- }
- if (operation & LOCK_NB) {
- spriteLockOp |= IOC_LOCK_NO_BLOCK;
- }
- if (operation & LOCK_UN) {
- status = Ioc_Unlock(descriptor, spriteLockOp);
- } else {
- status = Ioc_Lock(descriptor, spriteLockOp);
- }
- if (status != SUCCESS) {
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- } else {
- return(UNIX_SUCCESS);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * Unix_CloseLock --
- *
- * Release any locks held by this process on the given descriptor
- * before it is closed. Called by close().
- *
- * This is superceeded by the cleanup done in the Sprite kernel.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- /*ARGSUSED*/
- void
- Unix_CloseLock (fd)
- int fd;
- {
- return;
- }
-
-