Linux-2.6.12-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!
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
new file mode 100644
index 0000000..47229fe
--- /dev/null
+++ b/arch/um/drivers/net_user.c
@@ -0,0 +1,255 @@
+/*
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stddef.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include "user.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "net_user.h"
+#include "helper.h"
+#include "os.h"
+
+int tap_open_common(void *dev, char *gate_addr)
+{
+ int tap_addr[4];
+
+ if(gate_addr == NULL) return(0);
+ if(sscanf(gate_addr, "%d.%d.%d.%d", &tap_addr[0],
+ &tap_addr[1], &tap_addr[2], &tap_addr[3]) != 4){
+ printk("Invalid tap IP address - '%s'\n", gate_addr);
+ return(-EINVAL);
+ }
+ return(0);
+}
+
+void tap_check_ips(char *gate_addr, char *eth_addr)
+{
+ int tap_addr[4];
+
+ if((gate_addr != NULL) &&
+ (sscanf(gate_addr, "%d.%d.%d.%d", &tap_addr[0],
+ &tap_addr[1], &tap_addr[2], &tap_addr[3]) == 4) &&
+ (eth_addr[0] == tap_addr[0]) &&
+ (eth_addr[1] == tap_addr[1]) &&
+ (eth_addr[2] == tap_addr[2]) &&
+ (eth_addr[3] == tap_addr[3])){
+ printk("The tap IP address and the UML eth IP address"
+ " must be different\n");
+ }
+}
+
+void read_output(int fd, char *output, int len)
+{
+ int remain, n, actual;
+ char c;
+
+ if(output == NULL){
+ output = &c;
+ len = sizeof(c);
+ }
+
+ *output = '\0';
+ n = os_read_file(fd, &remain, sizeof(remain));
+ if(n != sizeof(remain)){
+ printk("read_output - read of length failed, err = %d\n", -n);
+ return;
+ }
+
+ while(remain != 0){
+ n = (remain < len) ? remain : len;
+ actual = os_read_file(fd, output, n);
+ if(actual != n){
+ printk("read_output - read of data failed, "
+ "err = %d\n", -actual);
+ return;
+ }
+ remain -= actual;
+ }
+ return;
+}
+
+int net_read(int fd, void *buf, int len)
+{
+ int n;
+
+ n = os_read_file(fd, buf, len);
+
+ if(n == -EAGAIN)
+ return(0);
+ else if(n == 0)
+ return(-ENOTCONN);
+ return(n);
+}
+
+int net_recvfrom(int fd, void *buf, int len)
+{
+ int n;
+
+ while(((n = recvfrom(fd, buf, len, 0, NULL, NULL)) < 0) &&
+ (errno == EINTR)) ;
+
+ if(n < 0){
+ if(errno == EAGAIN) return(0);
+ return(-errno);
+ }
+ else if(n == 0) return(-ENOTCONN);
+ return(n);
+}
+
+int net_write(int fd, void *buf, int len)
+{
+ int n;
+
+ n = os_write_file(fd, buf, len);
+
+ if(n == -EAGAIN)
+ return(0);
+ else if(n == 0)
+ return(-ENOTCONN);
+ return(n);
+}
+
+int net_send(int fd, void *buf, int len)
+{
+ int n;
+
+ while(((n = send(fd, buf, len, 0)) < 0) && (errno == EINTR)) ;
+ if(n < 0){
+ if(errno == EAGAIN) return(0);
+ return(-errno);
+ }
+ else if(n == 0) return(-ENOTCONN);
+ return(n);
+}
+
+int net_sendto(int fd, void *buf, int len, void *to, int sock_len)
+{
+ int n;
+
+ while(((n = sendto(fd, buf, len, 0, (struct sockaddr *) to,
+ sock_len)) < 0) && (errno == EINTR)) ;
+ if(n < 0){
+ if(errno == EAGAIN) return(0);
+ return(-errno);
+ }
+ else if(n == 0) return(-ENOTCONN);
+ return(n);
+}
+
+struct change_pre_exec_data {
+ int close_me;
+ int stdout;
+};
+
+static void change_pre_exec(void *arg)
+{
+ struct change_pre_exec_data *data = arg;
+
+ os_close_file(data->close_me);
+ dup2(data->stdout, 1);
+}
+
+static int change_tramp(char **argv, char *output, int output_len)
+{
+ int pid, fds[2], err;
+ struct change_pre_exec_data pe_data;
+
+ err = os_pipe(fds, 1, 0);
+ if(err < 0){
+ printk("change_tramp - pipe failed, err = %d\n", -err);
+ return(err);
+ }
+ pe_data.close_me = fds[0];
+ pe_data.stdout = fds[1];
+ pid = run_helper(change_pre_exec, &pe_data, argv, NULL);
+
+ read_output(fds[0], output, output_len);
+ os_close_file(fds[0]);
+ os_close_file(fds[1]);
+
+ if (pid > 0)
+ CATCH_EINTR(err = waitpid(pid, NULL, 0));
+ return(pid);
+}
+
+static void change(char *dev, char *what, unsigned char *addr,
+ unsigned char *netmask)
+{
+ char addr_buf[sizeof("255.255.255.255\0")];
+ char netmask_buf[sizeof("255.255.255.255\0")];
+ char version[sizeof("nnnnn\0")];
+ char *argv[] = { "uml_net", version, what, dev, addr_buf,
+ netmask_buf, NULL };
+ char *output;
+ int output_len, pid;
+
+ sprintf(version, "%d", UML_NET_VERSION);
+ sprintf(addr_buf, "%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
+ sprintf(netmask_buf, "%d.%d.%d.%d", netmask[0], netmask[1],
+ netmask[2], netmask[3]);
+
+ output_len = page_size();
+ output = um_kmalloc(output_len);
+ if(output == NULL)
+ printk("change : failed to allocate output buffer\n");
+
+ pid = change_tramp(argv, output, output_len);
+ if(pid < 0) return;
+
+ if(output != NULL){
+ printk("%s", output);
+ kfree(output);
+ }
+}
+
+void open_addr(unsigned char *addr, unsigned char *netmask, void *arg)
+{
+ change(arg, "add", addr, netmask);
+}
+
+void close_addr(unsigned char *addr, unsigned char *netmask, void *arg)
+{
+ change(arg, "del", addr, netmask);
+}
+
+char *split_if_spec(char *str, ...)
+{
+ char **arg, *end;
+ va_list ap;
+
+ va_start(ap, str);
+ while((arg = va_arg(ap, char **)) != NULL){
+ if(*str == '\0')
+ return(NULL);
+ end = strchr(str, ',');
+ if(end != str)
+ *arg = str;
+ if(end == NULL)
+ return(NULL);
+ *end++ = '\0';
+ str = end;
+ }
+ va_end(ap);
+ return(str);
+}
+
+/*
+ * 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:
+ */