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/* Copyright 2001 Jeff Dike and others
* Licensed under the GPL
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#define CURRENT_VERSION (4)
extern void ethertap_v0(int argc, char **argv);
extern void ethertap_v1_v2(int argc, char **argv);
extern void ethertap_v1_v2(int argc, char **argv);
extern void ethertap_v3(int argc, char **argv);
extern void ethertap_v4(int argc, char **argv);
void (*ethertap_handlers[])(int argc, char **argv) = {
ethertap_v0,
ethertap_v1_v2,
ethertap_v1_v2,
ethertap_v3,
ethertap_v4,
};
extern void slip_v0_v2(int argc, char **argv);
extern void slip_v3(int argc, char **argv);
extern void slip_v4(int argc, char **argv);
void (*slip_handlers[])(int argc, char **argv) = {
slip_v0_v2,
slip_v0_v2,
slip_v0_v2,
slip_v3,
slip_v4,
};
#ifdef TUNTAP
extern void tuntap_v2(int argc, char **argv);
extern void tuntap_v3(int argc, char **argv);
extern void tuntap_v4(int argc, char **argv);
void (*tuntap_handlers[])(int argc, char **argv) = {
NULL,
NULL,
tuntap_v2,
tuntap_v3,
tuntap_v4,
};
#endif
extern void add_address_v4(int argc, char **argv);
void (*add_handlers[])(int argc, char **argv) = {
NULL,
NULL,
NULL,
NULL,
add_address_v4,
};
extern void del_address_v4(int argc, char **argv);
void (*del_handlers[])(int argc, char **argv) = {
NULL,
NULL,
NULL,
NULL,
del_address_v4,
};
static void handler(int sig)
{
}
int main(int argc, char **argv)
{
char *version = argv[1];
char *transport = argv[2];
void (**handlers)(int, char **);
struct sigaction sa;
char *out;
int n = 3;
unsigned int v;
if(sigaction(SIGCHLD, NULL, &sa) < 0){
perror("sigaction");
exit(1);
}
sa.sa_handler = handler;
sa.sa_flags &= ~SA_NOCLDWAIT;
sa.sa_flags |= SA_RESTART;
if(sigaction(SIGCHLD, &sa, NULL) < 0){
perror("sigaction");
exit(1);
}
if(argc < 3){
fprintf(stderr,
"uml_net : bad argument list - if you're running uml_net by\n"
"hand, don't bother. uml_net is run automatically by UML when\n"
"necessary.\n");
exit(1);
}
setenv("PATH", "/bin:/usr/bin:/sbin:/usr/sbin", 1);
v = strtoul(version, &out, 0);
if(out != version){
if(v > CURRENT_VERSION){
fprintf(stderr, "Version mismatch - requested version %d, uml_net "
"supports up to version %d\n", v, CURRENT_VERSION);
exit(1);
}
}
else {
v = 0;
transport = version;
n = 2;
}
if(!strcmp(transport, "ethertap")) handlers = ethertap_handlers;
else if(!strcmp(transport, "slip")) handlers = slip_handlers;
#ifdef TUNTAP
else if(!strcmp(transport, "tuntap")) handlers = tuntap_handlers;
#endif
else if(!strcmp(transport, "add")) handlers = add_handlers;
else if(!strcmp(transport, "del")) handlers = del_handlers;
else {
printf("Unknown transport : '%s'\n", transport);
exit(1);
}
if(handlers[v] != NULL) (*handlers[v])(argc - n, &argv[n]);
else {
printf("No version #%d handler for '%s'\n", v, transport);
exit(1);
}
return(0);
}
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