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Remove feature to quit the isotptun by keypress (from stdin) as it was not possible to run it from a start-script.

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Added a signal handler to gracefully leave the isotptun.
This commit is contained in:
Oliver Hartkopp
2009-11-25 16:43:17 +00:00
parent af4ef62646
commit d68d6132da
1 changed files with 13 additions and 9 deletions
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isotptun.c
+13 -9
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@@ -58,6 +58,7 @@
#include <string.h> #include <string.h>
#include <libgen.h> #include <libgen.h>
#include <errno.h> #include <errno.h>
#include <signal.h>
#include <net/if.h> #include <net/if.h>
#include <sys/types.h> #include <sys/types.h>
@@ -70,6 +71,8 @@
#define NO_CAN_ID 0xFFFFFFFFU #define NO_CAN_ID 0xFFFFFFFFU
static volatile int running = 1;
void print_usage(char *prg) void print_usage(char *prg)
{ {
fprintf(stderr, "\nUsage: %s [options] <CAN interface>\n\n", prg); fprintf(stderr, "\nUsage: %s [options] <CAN interface>\n\n", prg);
@@ -93,6 +96,11 @@ void print_usage(char *prg)
fprintf(stderr, "\n"); fprintf(stderr, "\n");
} }
void sigterm(int signo)
{
running = 0;
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
fd_set rdfs; fd_set rdfs;
@@ -103,12 +111,15 @@ int main(int argc, char **argv)
static struct can_isotp_fc_options fcopts; static struct can_isotp_fc_options fcopts;
int opt, ret; int opt, ret;
extern int optind, opterr, optopt; extern int optind, opterr, optopt;
static int quit;
static int verbose; static int verbose;
unsigned char buffer[4096]; unsigned char buffer[4096];
int nbytes; int nbytes;
signal(SIGTERM, sigterm);
signal(SIGHUP, sigterm);
signal(SIGINT, sigterm);
addr.can_addr.tp.tx_id = addr.can_addr.tp.rx_id = NO_CAN_ID; addr.can_addr.tp.tx_id = addr.can_addr.tp.rx_id = NO_CAN_ID;
while ((opt = getopt(argc, argv, "s:d:x:p:q:P:t:b:m:whv?")) != -1) { while ((opt = getopt(argc, argv, "s:d:x:p:q:P:t:b:m:whv?")) != -1) {
@@ -235,24 +246,17 @@ int main(int argc, char **argv)
exit(1); exit(1);
} }
while (!quit) { while (running) {
FD_ZERO(&rdfs); FD_ZERO(&rdfs);
FD_SET(s, &rdfs); FD_SET(s, &rdfs);
FD_SET(t, &rdfs); FD_SET(t, &rdfs);
FD_SET(0, &rdfs);
if ((ret = select(t+1, &rdfs, NULL, NULL, NULL)) < 0) { if ((ret = select(t+1, &rdfs, NULL, NULL, NULL)) < 0) {
perror("select"); perror("select");
continue; continue;
} }
if (FD_ISSET(0, &rdfs)) {
getchar();
quit = 1;
printf("quit due to keyboard input.\n");
}
if (FD_ISSET(s, &rdfs)) { if (FD_ISSET(s, &rdfs)) {
nbytes = read(s, buffer, 4096); nbytes = read(s, buffer, 4096);
if (nbytes < 0) { if (nbytes < 0) {