2 * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL.
10 #include "kern_constants.h"
16 static int slirp_user_init(void *data, void *dev)
18 struct slirp_data *pri = data;
24 struct slirp_pre_exec_data {
29 static void slirp_pre_exec(void *arg)
31 struct slirp_pre_exec_data *data = arg;
33 if (data->stdin != -1)
35 if (data->stdout != -1)
36 dup2(data->stdout, 1);
39 static int slirp_tramp(char **argv, int fd)
41 struct slirp_pre_exec_data pe_data;
46 pid = run_helper(slirp_pre_exec, &pe_data, argv);
51 static int slirp_open(void *data)
53 struct slirp_data *pri = data;
56 err = os_pipe(fds, 1, 1);
60 err = slirp_tramp(pri->argw.argv, fds[1]);
62 printk(UM_KERN_ERR "slirp_tramp failed - errno = %d\n", -err);
79 static void slirp_close(int fd, void *data)
81 struct slirp_data *pri = data;
90 printk(UM_KERN_ERR "slirp_close: no child process to shut "
96 if (kill(pri->pid, SIGHUP)<0) {
97 printk(UM_KERN_ERR "slirp_close: sending hangup to %d failed "
98 "(%d)\n", pri->pid, errno);
101 err = helper_wait(pri->pid);
108 int slirp_user_read(int fd, void *buf, int len, struct slirp_data *pri)
110 return slip_proto_read(fd, buf, len, &pri->slip);
113 int slirp_user_write(int fd, void *buf, int len, struct slirp_data *pri)
115 return slip_proto_write(fd, buf, len, &pri->slip);
118 const struct net_user_info slirp_user_info = {
119 .init = slirp_user_init,
121 .close = slirp_close,
124 .delete_address = NULL,
126 .max_packet = BUF_SIZE,