Messages in this thread | | | From | (H. Peter Anvin) | Subject | Read this if you have PTY problems in 2.1.115 | Date | 8 Aug 1998 03:45:50 GMT |
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I thought I already posted this, but I can't seem to find it, so here it is again:
If you have PTY problems in 2.1.115, make sure you don't have one of these misconfigurations in your system:
1. /dev/ptyp* and /dev/ttyp* devices on major number 4. This configuration has been deprecated since Linux 1.3 (1995), and support for it was finally removed. The proper major number for /dev/pty* devices is 2 and for /dev/tty* devices is 3; see linux/Documentation/devices.* for the details.
2. /dev/ptmx but no /dev/pts (this will bite you if you're running glibc 2.0.9x).
If you have /dev/ptmx, glibc will attempt to use Unix98 PTYs. Either remove this device node, or set up Unix98 devices properly:
- Configure your kernel with CONFIG_UNIX98_PTYS and CONFIG_DEVPTS_FS.
- Add to your /etc/fstab file:
none /dev/pts devpts gid=5,mode=620 0 0
gid=5,mode=620 applies to RedHat systems (gid 5 is "tty"); other distributions may use other gid's. mode=620 means "mesg y" is the default; use mode=600 if you want "mesg n" to be the default.
- mknod /dev/ptmx c 5 2 chmod 666 /dev/ptmx mkdir /dev/pts mount /dev/pts
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