8 #include <sys/termios.h>
10 #include <sys/signal.h>
11 #include "user_util.h"
12 #include "kern_util.h"
16 #include "slip_common.h"
20 void slip_user_init(void *data, void *dev)
22 struct slip_data *pri = data;
27 static int set_up_tty(int fd)
32 if (tcgetattr(fd, &tios) < 0) {
33 printk("could not get initial terminal attributes\n");
37 tios.c_cflag = CS8 | CREAD | HUPCL | CLOCAL;
38 tios.c_iflag = IGNBRK | IGNPAR;
41 for (i = 0; i < NCCS; i++)
46 cfsetospeed(&tios, B38400);
47 cfsetispeed(&tios, B38400);
49 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
50 printk("failed to set terminal attributes\n");
56 struct slip_pre_exec_data {
62 static void slip_pre_exec(void *arg)
64 struct slip_pre_exec_data *data = arg;
66 if(data->stdin >= 0) dup2(data->stdin, 0);
67 dup2(data->stdout, 1);
68 if(data->close_me >= 0) os_close_file(data->close_me);
71 static int slip_tramp(char **argv, int fd)
73 struct slip_pre_exec_data pe_data;
75 int status, pid, fds[2], err, output_len;
77 err = os_pipe(fds, 1, 0);
79 printk("slip_tramp : pipe failed, err = %d\n", -err);
85 pe_data.stdout = fds[1];
86 pe_data.close_me = fds[0];
87 err = run_helper(slip_pre_exec, &pe_data, argv, NULL);
92 output_len = page_size();
93 output = um_kmalloc(output_len);
95 printk("slip_tramp : failed to allocate output buffer\n");
96 os_kill_process(pid, 1);
101 os_close_file(fds[1]);
102 read_output(fds[0], output, output_len);
103 printk("%s", output);
105 CATCH_EINTR(err = waitpid(pid, &status, 0));
108 else if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)){
109 printk("'%s' didn't exit with status 0\n", argv[0]);
114 os_close_file(fds[0]);
121 os_close_file(fds[0]);
122 os_close_file(fds[1]);
127 static int slip_open(void *data)
129 struct slip_data *pri = data;
130 char version_buf[sizeof("nnnnn\0")];
131 char gate_buf[sizeof("nnn.nnn.nnn.nnn\0")];
132 char *argv[] = { "uml_net", version_buf, "slip", "up", gate_buf,
138 printk("slip-open : Failed to open pty, err = %d\n", -err);
143 err = os_open_file(ptsname(mfd), of_rdwr(OPENFLAGS()), 0);
145 printk("Couldn't open tty for slip line, err = %d\n", -err);
156 if(pri->gate_addr != NULL){
157 sprintf(version_buf, "%d", UML_NET_VERSION);
158 strcpy(gate_buf, pri->gate_addr);
160 err = slip_tramp(argv, sfd);
163 printk("slip_tramp failed - err = %d\n", -err);
166 err = os_get_ifname(pri->slave, pri->name);
168 printk("get_ifname failed, err = %d\n", -err);
171 iter_addresses(pri->dev, open_addr, pri->name);
174 err = os_set_slip(sfd);
176 printk("Failed to set slip discipline encapsulation - "
190 static void slip_close(int fd, void *data)
192 struct slip_data *pri = data;
193 char version_buf[sizeof("nnnnn\0")];
194 char *argv[] = { "uml_net", version_buf, "slip", "down", pri->name,
198 if(pri->gate_addr != NULL)
199 iter_addresses(pri->dev, close_addr, pri->name);
201 sprintf(version_buf, "%d", UML_NET_VERSION);
203 err = slip_tramp(argv, pri->slave);
206 printk("slip_tramp failed - errno = %d\n", -err);
208 os_close_file(pri->slave);
212 int slip_user_read(int fd, void *buf, int len, struct slip_data *pri)
214 return slip_proto_read(fd, buf, len, &pri->slip);
217 int slip_user_write(int fd, void *buf, int len, struct slip_data *pri)
219 return slip_proto_write(fd, buf, len, &pri->slip);
222 static int slip_set_mtu(int mtu, void *data)
227 static void slip_add_addr(unsigned char *addr, unsigned char *netmask,
230 struct slip_data *pri = data;
232 if(pri->slave < 0) return;
233 open_addr(addr, netmask, pri->name);
236 static void slip_del_addr(unsigned char *addr, unsigned char *netmask,
239 struct slip_data *pri = data;
241 if(pri->slave < 0) return;
242 close_addr(addr, netmask, pri->name);
245 struct net_user_info slip_user_info = {
246 .init = slip_user_init,
250 .set_mtu = slip_set_mtu,
251 .add_address = slip_add_addr,
252 .delete_address = slip_del_addr,
253 .max_packet = BUF_SIZE