1 files changed, 0 insertions, 155 deletions
diff --git a/fs/fifo.c b/fs/fifo.c
deleted file mode 100644
index 923371b753a..00000000000
--- a/fs/fifo.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- *  linux/fs/fifo.c
- *
- *  written by Paul H. Hargrove
- *
- *  Fixes:
- *	10-06-1999, AV: fixed OOM handling in fifo_open(), moved
- *			initialization there, switched to external
- *			allocation of pipe_inode_info.
- */
-
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/smp_lock.h>
-#include <linux/fs.h>
-#include <linux/pipe_fs_i.h>
-
-static void wait_for_partner(struct inode* inode, unsigned int* cnt)
-{
-	int cur = *cnt;	
-	while(cur == *cnt) {
-		pipe_wait(inode);
-		if(signal_pending(current))
-			break;
-	}
-}
-
-static void wake_up_partner(struct inode* inode)
-{
-	wake_up_interruptible(PIPE_WAIT(*inode));
-}
-
-static int fifo_open(struct inode *inode, struct file *filp)
-{
-	int ret;
-
-	ret = -ERESTARTSYS;
-	if (mutex_lock_interruptible(PIPE_MUTEX(*inode)))
-		goto err_nolock_nocleanup;
-
-	if (!inode->i_pipe) {
-		ret = -ENOMEM;
-		if(!pipe_new(inode))
-			goto err_nocleanup;
-	}
-	filp->f_version = 0;
-
-	/* We can only do regular read/write on fifos */
-	filp->f_mode &= (FMODE_READ | FMODE_WRITE);
-
-	switch (filp->f_mode) {
-	case 1:
-	/*
-	 *  O_RDONLY
-	 *  POSIX.1 says that O_NONBLOCK means return with the FIFO
-	 *  opened, even when there is no process writing the FIFO.
-	 */
-		filp->f_op = &read_fifo_fops;
-		PIPE_RCOUNTER(*inode)++;
-		if (PIPE_READERS(*inode)++ == 0)
-			wake_up_partner(inode);
-
-		if (!PIPE_WRITERS(*inode)) {
-			if ((filp->f_flags & O_NONBLOCK)) {
-				/* suppress POLLHUP until we have
-				 * seen a writer */
-				filp->f_version = PIPE_WCOUNTER(*inode);
-			} else 
-			{
-				wait_for_partner(inode, &PIPE_WCOUNTER(*inode));
-				if(signal_pending(current))
-					goto err_rd;
-			}
-		}
-		break;
-	
-	case 2:
-	/*
-	 *  O_WRONLY
-	 *  POSIX.1 says that O_NONBLOCK means return -1 with
-	 *  errno=ENXIO when there is no process reading the FIFO.
-	 */
-		ret = -ENXIO;
-		if ((filp->f_flags & O_NONBLOCK) && !PIPE_READERS(*inode))
-			goto err;
-
-		filp->f_op = &write_fifo_fops;
-		PIPE_WCOUNTER(*inode)++;
-		if (!PIPE_WRITERS(*inode)++)
-			wake_up_partner(inode);
-
-		if (!PIPE_READERS(*inode)) {
-			wait_for_partner(inode, &PIPE_RCOUNTER(*inode));
-			if (signal_pending(current))
-				goto err_wr;
-		}
-		break;
-	
-	case 3:
-	/*
-	 *  O_RDWR
-	 *  POSIX.1 leaves this case "undefined" when O_NONBLOCK is set.
-	 *  This implementation will NEVER block on a O_RDWR open, since
-	 *  the process can at least talk to itself.
-	 */
-		filp->f_op = &rdwr_fifo_fops;
-
-		PIPE_READERS(*inode)++;
-		PIPE_WRITERS(*inode)++;
-		PIPE_RCOUNTER(*inode)++;
-		PIPE_WCOUNTER(*inode)++;
-		if (PIPE_READERS(*inode) == 1 || PIPE_WRITERS(*inode) == 1)
-			wake_up_partner(inode);
-		break;
-
-	default:
-		ret = -EINVAL;
-		goto err;
-	}
-
-	/* Ok! */
-	mutex_unlock(PIPE_MUTEX(*inode));
-	return 0;
-
-err_rd:
-	if (!--PIPE_READERS(*inode))
-		wake_up_interruptible(PIPE_WAIT(*inode));
-	ret = -ERESTARTSYS;
-	goto err;
-
-err_wr:
-	if (!--PIPE_WRITERS(*inode))
-		wake_up_interruptible(PIPE_WAIT(*inode));
-	ret = -ERESTARTSYS;
-	goto err;
-
-err:
-	if (!PIPE_READERS(*inode) && !PIPE_WRITERS(*inode))
-		free_pipe_info(inode);
-
-err_nocleanup:
-	mutex_unlock(PIPE_MUTEX(*inode));
-
-err_nolock_nocleanup:
-	return ret;
-}
-
-/*
- * Dummy default file-operations: the only thing this does
- * is contain the open that then fills in the correct operations
- * depending on the access mode of the file...
- */
-struct file_operations def_fifo_fops = {
-	.open		= fifo_open,	/* will set read or write pipe_fops */
-};