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#define _XOPEN_SOURCE 600
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
int main(void) {
int fdm;
int rc;
// initial
system("ls -l /dev/pts");
fdm = posix_openpt(O_RDWR);
if (fdm < 0) {
perror("posix_openpt");
return 1;
}
rc = grantpt(fdm);
if (rc != 0) {
perror("grantpt");
return 1;
}
rc = unlockpt(fdm);
if (rc != 0) {
perror("unlockpt");
return 1;
}
// final
system("ls -l /dev/pts");
return 0;
}
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