Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 197 insertions, 0 deletions

diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
new file mode 100644
index 00000000000..cf15b4a8b51
--- /dev/null
+++ b/arch/um/drivers/daemon_user.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and 
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ * Licensed under the GPL.
+ */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include "net_user.h"
+#include "daemon.h"
+#include "kern_util.h"
+#include "user_util.h"
+#include "user.h"
+#include "os.h"
+
+#define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
+
+enum request_type { REQ_NEW_CONTROL };
+
+#define SWITCH_MAGIC 0xfeedface
+
+struct request_v3 {
+	uint32_t magic;
+	uint32_t version;
+	enum request_type type;
+	struct sockaddr_un sock;
+};
+
+static struct sockaddr_un *new_addr(void *name, int len)
+{
+	struct sockaddr_un *sun;
+
+	sun = um_kmalloc(sizeof(struct sockaddr_un));
+	if(sun == NULL){
+		printk("new_addr: allocation of sockaddr_un failed\n");
+		return(NULL);
+	}
+	sun->sun_family = AF_UNIX;
+	memcpy(sun->sun_path, name, len);
+	return(sun);
+}
+
+static int connect_to_switch(struct daemon_data *pri)
+{
+	struct sockaddr_un *ctl_addr = pri->ctl_addr;
+	struct sockaddr_un *local_addr = pri->local_addr;
+	struct sockaddr_un *sun;
+	struct request_v3 req;
+	int fd, n, err;
+
+	pri->control = socket(AF_UNIX, SOCK_STREAM, 0);
+	if(pri->control < 0){
+		printk("daemon_open : control socket failed, errno = %d\n", 
+		       errno);		
+		return(-errno);
+	}
+
+	if(connect(pri->control, (struct sockaddr *) ctl_addr, 
+		   sizeof(*ctl_addr)) < 0){
+		printk("daemon_open : control connect failed, errno = %d\n",
+		       errno);
+		err = -errno;
+		goto out;
+	}
+
+	fd = socket(AF_UNIX, SOCK_DGRAM, 0);
+	if(fd < 0){
+		printk("daemon_open : data socket failed, errno = %d\n", 
+		       errno);
+		err = -errno;
+		goto out;
+	}
+	if(bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0){
+		printk("daemon_open : data bind failed, errno = %d\n", 
+		       errno);
+		err = -errno;
+		goto out_close;
+	}
+
+	sun = um_kmalloc(sizeof(struct sockaddr_un));
+	if(sun == NULL){
+		printk("new_addr: allocation of sockaddr_un failed\n");
+		err = -ENOMEM;
+		goto out_close;
+	}
+
+	req.magic = SWITCH_MAGIC;
+	req.version = SWITCH_VERSION;
+	req.type = REQ_NEW_CONTROL;
+	req.sock = *local_addr;
+	n = os_write_file(pri->control, &req, sizeof(req));
+	if(n != sizeof(req)){
+		printk("daemon_open : control setup request failed, err = %d\n",
+		       -n);
+		err = -ENOTCONN;
+		goto out;		
+	}
+
+	n = os_read_file(pri->control, sun, sizeof(*sun));
+	if(n != sizeof(*sun)){
+		printk("daemon_open : read of data socket failed, err = %d\n",
+		       -n);
+		err = -ENOTCONN;
+		goto out_close;		
+	}
+
+	pri->data_addr = sun;
+	return(fd);
+
+ out_close:
+	os_close_file(fd);
+ out:
+	os_close_file(pri->control);
+	return(err);
+}
+
+static void daemon_user_init(void *data, void *dev)
+{
+	struct daemon_data *pri = data;
+	struct timeval tv;
+	struct {
+		char zero;
+		int pid;
+		int usecs;
+	} name;
+
+	if(!strcmp(pri->sock_type, "unix"))
+		pri->ctl_addr = new_addr(pri->ctl_sock, 
+					 strlen(pri->ctl_sock) + 1);
+	name.zero = 0;
+	name.pid = os_getpid();
+	gettimeofday(&tv, NULL);
+	name.usecs = tv.tv_usec;
+	pri->local_addr = new_addr(&name, sizeof(name));
+	pri->dev = dev;
+	pri->fd = connect_to_switch(pri);
+	if(pri->fd < 0){
+		kfree(pri->local_addr);
+		pri->local_addr = NULL;
+	}
+}
+
+static int daemon_open(void *data)
+{
+	struct daemon_data *pri = data;
+	return(pri->fd);
+}
+
+static void daemon_remove(void *data)
+{
+	struct daemon_data *pri = data;
+
+	os_close_file(pri->fd);
+	os_close_file(pri->control);
+	if(pri->data_addr != NULL) kfree(pri->data_addr);
+	if(pri->ctl_addr != NULL) kfree(pri->ctl_addr);
+	if(pri->local_addr != NULL) kfree(pri->local_addr);
+}
+
+int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
+{
+	struct sockaddr_un *data_addr = pri->data_addr;
+
+	return(net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)));
+}
+
+static int daemon_set_mtu(int mtu, void *data)
+{
+	return(mtu);
+}
+
+struct net_user_info daemon_user_info = {
+	.init		= daemon_user_init,
+	.open		= daemon_open,
+	.close	 	= NULL,
+	.remove	 	= daemon_remove,
+	.set_mtu	= daemon_set_mtu,
+	.add_address	= NULL,
+	.delete_address = NULL,
+	.max_packet	= MAX_PACKET - ETH_HEADER_OTHER
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */