toaruos/userspace/extra/serial-console.c
2013-02-10 01:36:35 -08:00

104 lines
1.9 KiB
C

/*
* cat
*
* Concatenates files together to standard output.
* In a supporting terminal, you can then pipe
* standard out to another file or other useful
* things like that.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syscall.h>
#include "lib/pthread.h"
#include "../kernel/include/signal.h"
DEFN_SYSCALL1(serial, 44, int);
int fd = 0;
int child_pid = 0;
void *print_serial_stuff(void * garbage) {
child_pid = gettid();
while (1) {
char buf[1024];
size_t size = read(fd, buf, 1024);
for (int i = 0; i < size; ++i) {
char x = buf[i];
fputc(x, stdout);
}
if (size) fflush(stdout);
}
pthread_exit(garbage);
}
int main(int argc, char ** argv) {
int device = 0x2F8;
pthread_t receive_thread;
pthread_t flush_thread;
if (argc > 1) {
if (!strcmp(argv[1], "com1")) {
device = 0x3F8;
} else if (!strcmp(argv[1], "com2")) {
device = 0x2F8;
} else {
fprintf(stderr, "Unrecognized com device, try com1 or com2; default is com2.\n");
return 1;
}
}
printf("\033[1560z");
fflush(stdout);
fd = syscall_serial(device);
pthread_create(&receive_thread, NULL, print_serial_stuff, NULL);
while (1) {
char c = fgetc(stdin);
if (c == 27) {
char x = fgetc(stdin);
if (x == ']') {
while (1) {
printf("serial-console>\033[1561z ");
fflush(stdout);
char line[1024];
fgets(line, 1024, stdin);
int i = strlen(line);
line[i-1] = '\0';
if (!strcmp(line, "quit")) {
syscall_send_signal(child_pid, SIGKILL);
printf("Waiting for threads to shut down...\n");
syscall_wait(child_pid);
printf("Exiting.\n");
return 0;
} else if (!strcmp(line, "continue")) {
printf("\033[1560z");
fflush(stdout);
break;
}
}
} else {
ungetc(x, stdin);
}
}
char buf[1] = {c};
write(fd, buf, 1);
}
close(fd);
return 0;
}
/*
* vim:tabstop=4
* vim:noexpandtab
* vim:shiftwidth=4
*/