5 files changed, 131 insertions, 1 deletions
diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h
new file mode 100644
index 000000000000..c028d5b7576b
--- /dev/null
+++ b/include/linux/eventpoll.h
@@ -0,0 +1,51 @@
+/*
+ *  include/linux/eventpoll.h ( Efficent event polling implementation )
+ *  Copyright (C) 2001,...,2002  Davide Libenzi
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_EVENTPOLL_H
+#define _LINUX_EVENTPOLL_H
+
+
+#define EVENTPOLL_MINOR	124
+#define POLLFD_X_PAGE (PAGE_SIZE / sizeof(struct pollfd))
+#define MAX_FDS_IN_EVENTPOLL (1024 * 128)
+#define MAX_EVENTPOLL_PAGES (MAX_FDS_IN_EVENTPOLL / POLLFD_X_PAGE)
+#define EVENT_PAGE_INDEX(n) ((n) / POLLFD_X_PAGE)
+#define EVENT_PAGE_REM(n) ((n) % POLLFD_X_PAGE)
+#define EVENT_PAGE_OFFSET(n) (((n) % POLLFD_X_PAGE) * sizeof(struct pollfd))
+#define EP_FDS_PAGES(n) (((n) + POLLFD_X_PAGE - 1) / POLLFD_X_PAGE)
+#define EP_MAP_SIZE(n) (EP_FDS_PAGES(n) * PAGE_SIZE * 2)
+
+
+struct evpoll {
+	int ep_timeout;
+	unsigned long ep_resoff;
+};
+
+#define EP_ALLOC _IOR('P', 1, int)
+#define EP_POLL _IOWR('P', 2, struct evpoll)
+#define EP_FREE _IO('P', 3)
+#define EP_ISPOLLED _IOWR('P', 4, struct pollfd)
+
+#define EP_CTL_ADD 1
+#define EP_CTL_DEL 2
+#define EP_CTL_MOD 3
+
+
+asmlinkage int sys_epoll_create(int maxfds);
+asmlinkage int sys_epoll_ctl(int epfd, int op, int fd, unsigned int events);
+asmlinkage int sys_epoll_wait(int epfd, struct pollfd const **events, int timeout);
+
+
+
+#endif
+
diff --git a/include/linux/fcblist.h b/include/linux/fcblist.h
new file mode 100644
index 000000000000..85be93ae40fd
--- /dev/null
+++ b/include/linux/fcblist.h
@@ -0,0 +1,71 @@
+/*
+ *  include/linux/fcblist.h ( File event callbacks handling )
+ *  Copyright (C) 2001,...,2002  Davide Libenzi
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef __LINUX_FCBLIST_H
+#define __LINUX_FCBLIST_H
+
+#include <linux/config.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+
+
+
+/* file callback notification events */
+#define ION_IN		1
+#define ION_OUT		2
+#define ION_HUP		3
+#define ION_ERR		4
+
+#define FCB_LOCAL_SIZE	4
+
+
+struct fcb_struct {
+	struct list_head llink;
+	void (*cbproc)(struct file *, void *, unsigned long *, long *);
+	void *data;
+	unsigned long local[FCB_LOCAL_SIZE];
+};
+
+
+extern long ion_band_table[];
+extern long poll_band_table[];
+
+
+void file_notify_event(struct file *filep, long *event);
+
+int file_notify_addcb(struct file *filep,
+		      void (*cbproc)(struct file *, void *, unsigned long *, long *),
+		      void *data);
+
+int file_notify_delcb(struct file *filep,
+		      void (*cbproc)(struct file *, void *, unsigned long *, long *));
+
+void file_notify_cleanup(struct file *filep);
+
+
+static inline void file_notify_init(struct file *filep)
+{
+	rwlock_init(&filep->f_cblock);
+	INIT_LIST_HEAD(&filep->f_cblist);
+}
+
+static inline void file_send_notify(struct file *filep, long ioevt, long plevt)
+{
+	long event[] = { ioevt, plevt, -1 };
+
+	file_notify_event(filep, event);
+}
+
+#endif
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c2e39a247227..906f221f4b26 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -506,6 +506,10 @@ struct file {
 
 	/* needed for tty driver, and maybe others */
 	void			*private_data;
+
+	/* file callback list */
+	rwlock_t f_cblock;
+	struct list_head f_cblist;
 };
 extern spinlock_t files_lock;
 #define file_list_lock() spin_lock(&files_lock);
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 407c0e0b3e84..bdf0a3686916 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -12,6 +12,8 @@ struct pipe_inode_info {
 	unsigned int waiting_writers;
 	unsigned int r_counter;
 	unsigned int w_counter;
+	struct file *rdfile;
+	struct file *wrfile;
 	struct fasync_struct *fasync_readers;
 	struct fasync_struct *fasync_writers;
 };
@@ -30,6 +32,8 @@ struct pipe_inode_info {
 #define PIPE_WAITING_WRITERS(inode)	((inode).i_pipe->waiting_writers)
 #define PIPE_RCOUNTER(inode)	((inode).i_pipe->r_counter)
 #define PIPE_WCOUNTER(inode)	((inode).i_pipe->w_counter)
+#define PIPE_READFILE(inode)	((inode).i_pipe->rdfile)
+#define PIPE_WRITEFILE(inode)	((inode).i_pipe->wrfile)
 #define PIPE_FASYNC_READERS(inode)     (&((inode).i_pipe->fasync_readers))
 #define PIPE_FASYNC_WRITERS(inode)     (&((inode).i_pipe->fasync_writers))
 
diff --git a/include/linux/sys.h b/include/linux/sys.h
index dcd3256684cf..95b431dbebff 100644
--- a/include/linux/sys.h
+++ b/include/linux/sys.h
@@ -4,7 +4,7 @@
 /*
  * system call entry points ... but not all are defined
  */
-#define NR_syscalls 256
+#define NR_syscalls 260
 
 /*
  * These are system calls that will be removed at some time