[Pkg-sysvinit-devel] Bug#705056: /etc/default/devpts instructions to set "mesg n" by default don't work

Jakub Wilk jwilk at debian.org
Tue Apr 9 15:13:47 UTC 2013

Package: initscripts,libc6

/etc/default/devpts reads:
# Set to 600 to have `mesg n' be the default

But this doesn't really work. Even if you mount /dev/pts with mode=600, 
your pty devices will end up with 620 permissions. This is because 
well-behaved software calls grantpt(), which changes the device 

Either grantpt() should be fixed not to touch permissions if /dev/pts is 
a devpts fs (as it did in the past[0]) or initscripts should be fixed 
not to claim you can have "mesg n" by default.

[0] http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=292e3abebff9f94ca47c1a725a691cb6ed6cff5f

Jakub Wilk

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