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#define _XOPEN_SOURCE 700
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int
main(void)
{
char buffer[256];
char *path;
int master;
ssize_t bytes;
master = posix_openpt(O_RDWR | O_NOCTTY | O_CLOEXEC);
if (master < 0) {
if (errno == ENOENT || errno == ENODEV || errno == ENOSYS ||
errno == EPERM || errno == EACCES)
return 77;
fprintf(stderr, "mkpty: posix_openpt: %s\n", strerror(errno));
return 1;
}
if (grantpt(master) != 0) {
fprintf(stderr, "mkpty: grantpt: %s\n", strerror(errno));
close(master);
return 1;
}
if (unlockpt(master) != 0) {
fprintf(stderr, "mkpty: unlockpt: %s\n", strerror(errno));
close(master);
return 1;
}
path = ptsname(master);
if (path == NULL) {
fprintf(stderr, "mkpty: ptsname: %s\n", strerror(errno));
close(master);
return 1;
}
if (printf("%s\n", path) < 0 || fflush(stdout) != 0) {
fprintf(stderr, "mkpty: failed to write slave path\n");
close(master);
return 1;
}
while ((bytes = read(STDIN_FILENO, buffer, sizeof(buffer))) > 0)
;
if (bytes < 0) {
fprintf(stderr, "mkpty: read: %s\n", strerror(errno));
close(master);
return 1;
}
close(master);
return 0;
}
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