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-rw-r--r--include/asm-i386/poll.h1
-rw-r--r--include/asm-i386/unistd.h3
-rw-r--r--include/linux/eventpoll.h51
-rw-r--r--include/linux/fcblist.h71
-rw-r--r--include/linux/fs.h4
-rw-r--r--include/linux/pipe_fs_i.h4
-rw-r--r--include/linux/sys.h2
-rw-r--r--include/net/sock.h12
8 files changed, 145 insertions, 3 deletions
diff --git a/include/asm-i386/poll.h b/include/asm-i386/poll.h
index e5feda71b356..aecc80a15d36 100644
--- a/include/asm-i386/poll.h
+++ b/include/asm-i386/poll.h
@@ -15,6 +15,7 @@
#define POLLWRNORM 0x0100
#define POLLWRBAND 0x0200
#define POLLMSG 0x0400
+#define POLLREMOVE 0x1000
struct pollfd {
int fd;
diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h
index 159dfa7fefe1..902054f38279 100644
--- a/include/asm-i386/unistd.h
+++ b/include/asm-i386/unistd.h
@@ -258,6 +258,9 @@
#define __NR_free_hugepages 251
#define __NR_exit_group 252
#define __NR_lookup_dcookie 253
+#define __NR_sys_epoll_create 254
+#define __NR_sys_epoll_ctl 255
+#define __NR_sys_epoll_wait 256
/* user-visible error numbers are in the range -1 - -124: see <asm-i386/errno.h> */
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
diff --git a/include/net/sock.h b/include/net/sock.h
index d2790e2ca00a..4a4094b93d07 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -52,6 +52,9 @@
#include <asm/atomic.h>
#include <net/dst.h>
#include <net/scm.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/fcblist.h>
/*
* This structure really needs to be cleaned up.
@@ -766,8 +769,13 @@ static inline unsigned long sock_wspace(struct sock *sk)
static inline void sk_wake_async(struct sock *sk, int how, int band)
{
- if (sk->socket && sk->socket->fasync_list)
- sock_wake_async(sk->socket, how, band);
+ if (sk->socket) {
+ if (sk->socket->file)
+ file_send_notify(sk->socket->file, ion_band_table[band - POLL_IN],
+ poll_band_table[band - POLL_IN]);
+ if (sk->socket->fasync_list)
+ sock_wake_async(sk->socket, how, band);
+ }
}
#define SOCK_MIN_SNDBUF 2048
generated by cgit v1.2.3 (git 2.46.0) at 2026-02-02 15:46:00 +0000