131 lines
2.2 KiB
C
131 lines
2.2 KiB
C
/*
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* The original concept. Not the original code :)
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*
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*/
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#include <texttool.h>
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#include <gsos.h>
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#include <Event.h>
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#include <fcntl.h>
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#include <Locator.h>
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#include <Memory.h>
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#include <sgtty.h>
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#include <libutil.h>
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#include <unistd.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl.compat.h>
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int
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openpty2(int *amaster, int *aslave, char *name, struct sgttyb *sg, struct winsize *winp) {
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char ptyname[] = ".ptyq0";
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char ttyname[] = ".ttyq0";
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int master;
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int slave;
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unsigned i;
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for (i = 0; i < 16; ++i) {
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ptyname[5] = ttyname[5] = "0123456789abcdef"[i];
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master = open(ptyname, O_RDWR);
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if (master < 0) continue;
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slave = open(ttyname, O_RDRW);
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if (slave < 0) {
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close(master);
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continue;
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}
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*amaster = master;
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*aslave = slave;
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if (name) strcpy(name, ttyname);
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if (sg) stty(slave, sg);
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if (winp) ioctl(slave, TIOCSWINSZ, (char *)winp);
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return 0;
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}
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errno = ENOENT;
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return -1;
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}
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#pragma databank 1
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static int _child(int master, int slave) {
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close(master);
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logintty(slave);
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execve(":bin:gsh", "gsh -f");
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write(slave, "Unable to exec.\r\n", 27);
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close(slave);
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return 1;
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}
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#pragma databank 0
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int
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forkpty2(int *amaster, char *name, struct sgttyb *sg, struct winsize *winp) {
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int ok;
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int master, slave, pid;
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ok = openpty2(&master, &slave, name, sg, winp);
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if (ok < 0) return -1;
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pid = fork2(_child, 256, 0, NULL, 4, master, slave);
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if (pid < 0) {
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close(master);
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close(slave);
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return -1;
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}
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close(slave);
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return pid;
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}
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#pragma databank 1
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static void sigchild(int sig, int x) {
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PostEvent(0x8000,0);
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}
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#pragma databank 0
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int main(int argc, char **argv) {
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int fd;
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int pid;
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signal(SIGCHLD,sigchild);
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pid = forkpty2(&fd, NULL, NULL, NULL);
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if ( pid < 0) {
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ErrWriteCString("Unable to forkpty.\r\n");
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return 1;
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}
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for(;;) {
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int fio = 0;
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ioctl(fd, FIONREAD, &fio);
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if (fio > 256) fio = 256;
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if (fio > 0) {
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fio = read(fd, buffer, fio);
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if (fio > 0) vt100_process(buffer, fio);
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}
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GetNextEvent(...);
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if (fio <= 0) {
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union wait wt;
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ok = waitpid(pid, &wt, WNOHANG);
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if (ok <= 0)
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}
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asm { cop 0x7f }
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}
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if (fd >= 0) close(fd);
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return 0;
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} |