Date: Mon, 11 Apr 2005 01:09:13 +0300 (EEST) From: Vladimir Kushnir <vkushnir@i.kiev.ua> To: current@freebsd.org Subject: -CURRENT and ptsname() again Message-ID: <20050411004706.I2914@kushnir1.kiev.ua>
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Hello,
It definitely looks like posix_openpt (perhaps) and ptsname/grantpt
(most probably) do not work as they should under -CURRENT. Examples: mc
(misc/mc) reports:
subshell.c: couldn't open master side of pty
pty_open_master: Permission denied
KDE (at least CVS, but it's pty handling did not change recently)
complaints about chown
The simplest example:
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
main() {
int pty_master;
char *master_name, *slave_name;
struct stat sb;
pty_master = posix_openpt(O_RDWR | O_NOCTTY);
fstat(pty_master, &sb);
if (grantpt (pty_master) < 0) {
printf("Fail: grantpt\n");
}
if (unlockpt (pty_master) < 0) {
printf("Fail: unlocktpt\n");
}
master_name = devname(sb.st_rdev, S_IFCHR);
slave_name = ptsname (pty_master);
printf("Open master: /dev/%s, slave: %s\n", master_name, slave_name);
close (pty_master);
return 0;
}
gives an absurd output:
~> ./ptytest
Fail: grantpt
Open master: /dev/ptyp0, slave: /dev/ttysu
^^^^^^^^^^
grantpt() here also fails.
This is fairly recent -CURRENT:
FreeBSD kushnir1.kiev.ua 6.0-CURRENT FreeBSD 6.0-CURRENT #6: Sat Apr 9
23:17:34 EEST 2005 root@:/usr/obj/usr/src/sys/KUSHNIR i386
Sorry, cannot fix it myself
Redards,
Vladimir
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