add login_tty function

diff --git a/include/utmp.h b/include/utmp.h
index e9ba23e..24e2da7 100644 (file)
--- a/include/utmp.h
+++ b/include/utmp.h
@@ -35,6 +35,8 @@ void         setutent(void);
 
 void updwtmp(const char *, const struct utmp *);
 
+int login_tty(int);
+
 #define _PATH_UTMP "/dev/null/utmp"
 #define _PATH_WTMP "/dev/null/wtmp"
 

diff --git a/src/misc/login_tty.c b/src/misc/login_tty.c
new file mode 100644 (file)
index 0000000..f0be0a0
--- /dev/null
+++ b/src/misc/login_tty.c
@@ -0,0 +1,14 @@
+#include <utmp.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+int login_tty(int fd)
+{
+       setsid();
+       if (ioctl(fd, TIOCSCTTY, (char *)0)) return -1;
+       dup2(fd, 0);
+       dup2(fd, 1);
+       dup2(fd, 2);
+       if (fd>2) close(fd);
+       return 0;
+}