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base-files: ignore "mesg n" error messages

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When using "su - myuser" to change from root to a non-privileged user,
"mesg n" from the default .profile fails with "mesg: error: tty device
is not owned by group `tty' or "mesg: cannot open /dev/ttyS0:
Permission denied", depending on whether mesg comes from busybox or
util-linux.

This does not happen during a normal login because permissions on
/dev/tty* get changed while doing that, something that isn't possible
with plain "su -".

As the error can't be avoided and failures of mesg probably aren't
particularly important, now error messages get dumped to /dev/null.

[YOCTO #11127]

(From OE-Core rev: 4511a524f906c97db7c7674ad34e7bc8630649e3)

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Patrick Ohly
2017-07-12 10:44:12 +02:00
committed by Richard Purdie
parent 3ae1f267d4
commit b066632e2e
1 changed files with 2 additions and 1 deletions
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meta/recipes-core/base-files/base-files/share/dot.profile
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@@ -7,4 +7,5 @@ fi
# path set by /etc/profile
# export PATH
mesg n
# Might fail after "su - myuser" when /dev/tty* is not writable by "myuser".
mesg n 2>/dev/null