> When guenther@ switched isatty(3) to F_ISATTY, he forgot ttyname(3).
That was a change I made.
> With this, simple callers of ttyname(3) like tty(1) and who(1) no
> longer need pledge("tty").
That is correct, these programs could do without the ability to set
modes on the tty. I think this is a good idea. It may be hard to
document later; but we'll get there.
> Index: lib/libc/gen/ttyname.c
> ===================================================================
> RCS file: /cvs/src/lib/libc/gen/ttyname.c,v
> retrieving revision 1.15
> diff -u -p -r1.15 ttyname.c
> --- lib/libc/gen/ttyname.c 12 Sep 2015 14:56:50 -0000 1.15
> +++ lib/libc/gen/ttyname.c 12 Oct 2015 10:58:35 -0000
> @@ -32,7 +32,6 @@
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <dirent.h>
> -#include <termios.h>
> #include <db.h>
> #include <string.h>
> #include <unistd.h>
> @@ -68,7 +67,6 @@ int
> ttyname_r(int fd, char *buf, size_t len)
> {
> struct stat sb;
> - struct termios ttyb;
> DB *db;
> DBT data, key;
> struct {
> @@ -77,7 +75,7 @@ ttyname_r(int fd, char *buf, size_t len)
> } bkey;
>
> /* Must be a terminal. */
> - if (tcgetattr(fd, &ttyb) < 0)
> + if (fcntl(fd, F_ISATTY) == -1)
> return (errno);
> /* Must be a character device. */
> if (fstat(fd, &sb))
> Index: usr.bin/tty/tty.c
> ===================================================================
> RCS file: /cvs/src/usr.bin/tty/tty.c,v
> retrieving revision 1.9
> diff -u -p -r1.9 tty.c
> --- usr.bin/tty/tty.c 9 Oct 2015 01:37:09 -0000 1.9
> +++ usr.bin/tty/tty.c 12 Oct 2015 11:02:51 -0000
> @@ -43,7 +43,7 @@ main(int argc, char *argv[])
> int ch, sflag;
> char *t;
>
> - if (pledge("stdio rpath tty", NULL) == -1)
> + if (pledge("stdio rpath", NULL) == -1)
> err(1, "pledge");
>
> sflag = 0;
> Index: usr.bin/who/who.c
> ===================================================================
> RCS file: /cvs/src/usr.bin/who/who.c,v
> retrieving revision 1.25
> diff -u -p -r1.25 who.c
> --- usr.bin/who/who.c 11 Oct 2015 23:29:56 -0000 1.25
> +++ usr.bin/who/who.c 12 Oct 2015 11:03:11 -0000
> @@ -74,7 +74,7 @@ main(int argc, char *argv[])
>
> setlocale(LC_ALL, "");
>
> - if (pledge("stdio rpath getpw tty", NULL) == -1)
> + if (pledge("stdio rpath getpw", NULL) == -1)
> err(1, "pledge");
>
> if (mytty = ttyname(0)) {
> --
> Christian "naddy" Weisgerber na...@mips.inka.de
>
