diff options
author | ed <ed@FreeBSD.org> | 2009-05-07 13:49:48 +0000 |
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committer | ed <ed@FreeBSD.org> | 2009-05-07 13:49:48 +0000 |
commit | f8170e41fe131d129edab0370716adf666f67cea (patch) | |
tree | 20c0656b6a881111e7bd254adf5f19151c541199 /lib/libutil/login_tty.c | |
parent | e0ce6b415e3db13761dcef8945261fbfb00cde10 (diff) | |
download | FreeBSD-src-f8170e41fe131d129edab0370716adf666f67cea.zip FreeBSD-src-f8170e41fe131d129edab0370716adf666f67cea.tar.gz |
Add tcsetsid(3).
The entire world seems to use the non-standard TIOCSCTTY ioctl to make a
TTY a controlling terminal of a session. Even though tcsetsid(3) is also
non-standard, I think it's a lot better to use in our own source code,
mainly because it's similar to tcsetpgrp(), tcgetpgrp() and tcgetsid().
I stole the idea from QNX. They do it the other way around; their
TIOCSCTTY is just a wrapper around tcsetsid(). tcsetsid() then calls
into an IPC framework.
Diffstat (limited to 'lib/libutil/login_tty.c')
-rw-r--r-- | lib/libutil/login_tty.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/libutil/login_tty.c b/lib/libutil/login_tty.c index 51299bd..a14e244 100644 --- a/lib/libutil/login_tty.c +++ b/lib/libutil/login_tty.c @@ -37,17 +37,21 @@ static char sccsid[] = "@(#)login_tty.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> -#include <sys/ioctl.h> #include <libutil.h> #include <stdlib.h> +#include <termios.h> #include <unistd.h> int login_tty(int fd) { - (void) setsid(); - if (ioctl(fd, TIOCSCTTY, (char *)NULL) == -1) + pid_t s; + + s = setsid(); + if (s == -1) + return (-1); + if (tcsetsid(fd, s) == -1) return (-1); (void) dup2(fd, 0); (void) dup2(fd, 1); |