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Commit Graph

22 Commits

Author SHA1 Message Date
Zbigniew Jędrzejewski-Szmek
a2ae516a25 getty-generator: properly escape instance names
Otherwise the add_symlink() function tries to make directories for
each slash even for the slash after the @ symbol in the final link
name, failing for /dev/3270/tty1.

Based on a patch by Werner Fink <werner@suse.de>.
2014-06-19 22:04:29 -04:00
Zbigniew Jędrzejewski-Szmek
f56506141c getty-generator: use strappenda
Allocating on the stack should be fine for the fixed number
of items.
2014-06-19 22:04:29 -04:00
Hendrik Brueckner
fc6c7fe9be getty: Start getty on 3270 terminals available on Linux on System z
Add the first 3270 terminal device that is associated with the Linux preferred
console to the list of virtualization consoles.  This is required to
automatically start a getty if the conmode=3270 kernel parameter is specified
for Linux on z/VM instances.  Note that a queued upstream patch also enable
the 3270 terminal device if it is associated with the Linux preferred console.
How

To successfully start agetty on a 3270 terminal, a change in the agetty
parameter order is required.  Previously, agetty would started like this:

    /sbin/agetty --keep-baud 3270/tty1 115200,38400,9600 TERM

The agetty program interprets the "3270/tty1" as baud rate and fails to start
with the "bad speed: 3270/tty1" error message.  Fixing this in agetty is more
complex rather than reordering the command line parameters like this:

    /sbin/agetty --keep-baud 115200,38400,9600 3270/tty1 TERM

According to agetty sources and "agetty --help", agetty accepts the "tty",
"baudrate tty", and "tty baudrate" specifications.

P.S. The "tty: Set correct tty name in 'active' sysfs attribute" introduces
     a change to display the terminal device which is associated with the
     Linux preferred console.  This change helps to let systemd handle this
     particular case only.  Without the changes of this commit, no additional
     3270 terminal device can be managed by systemd.

     https://git.kernel.org/cgit/linux/kernel/git/gregkh/tty.git/commit/?id=723abd87f6e536f1353c8f64f621520bc29523a3
2014-03-13 10:42:26 +01:00
Lennart Poettering
543407517e getty-generator: verify ttys before we make use of them
The ttyS[0-3] devices are weird. They may be enumerated, but when one
actually tries to open and use them they return EIO, because they don't
actually exist. Because they may be enumerated they may be specified on
the kernel command line as console=. And some people do that as default.
As response to that we'll spawn a getty on the tty that will quickly
fail, and we retry a couple of time before giving up. That is quite
noisy.

With this new change we will validate all serial terminals configured
with console= on the kernel cmdline before adding gettys on them, and
remove the invalid ones. THis should remove the noise later on.

This should make Eric Paris happy!
2014-02-24 03:59:50 +01:00
Hendrik Brueckner
07901fc142 s390/getty-generator: initialize essential system terminals/consoles
Ensure to start getty programs on all essential system consoles on Linux on
System z.  Add these essential devices to the list of virtualization_consoles
to always generate getty configurations.

For the sake of completion, the list of essential consoles is:

  /dev/sclp_line0 - Operating system messages applet (LPAR)
  /dev/ttysclp0 - Integrated ASCII console applet (z/VM and LPAR)
  /dev/ttyS0 - Already handled by systemd (3215 console on z/VM)
  /dev/hvc0  - Already handled by systemd (IUCV HVC terminal on z/VM)

Depending on the environment, z/VM or LPAR, only a subset of these terminals
are available.

See also RH BZ 860158[1] "Cannot login via Operating System Console into RHEL7
instance installed on a LPAR".  This bugzilla actually blocks the installation
of Linux on System z instances in LPAR mode.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=860158
2014-01-31 18:16:36 +01:00
Thomas Hindoe Paaboel Andersen
3fa5dd6de7 getty-generator: fix stripping /dev/ 2013-12-13 23:24:16 +01:00
Lennart Poettering
207d1d0922 getty-generator: fix segfault when $container_ttys is not set 2013-12-13 20:40:31 +01:00
Lennart Poettering
1d97ff7dd7 getty-generator: look add an environment variable $container_ttys set for PID 1 and start gettys on all ttys listed therein 2013-12-13 16:57:24 +01:00
Lennart Poettering
f85fc84541 getty-generator: modernizations 2013-10-31 01:43:38 +01:00
Michael Marineau
39f0570d6e getty-generator: Enable getty on all active serial consoles.
This enables a getty on active kernel consoles even when they are not
the last one specified on the kernel command line and mapped to
/dev/console. Now the order "console=ttyS0 console=tty0" works in
addition to "console=tty0 console=ttyS0".
2013-09-12 08:34:30 -04:00
Zbigniew Jędrzejewski-Szmek
c79bb9e4e2 Standarize on one spelling of symlink error message
It's polite to print the name of the link that wasn't created,
and it makes little sense to print the target.
2013-04-24 00:25:04 -04:00
Harald Hoyer
a5c32cff1f honor SELinux labels, when creating and writing config files
Also split out some fileio functions to fileio.c and provide a SELinux
aware pendant in fileio-label.c

see https://bugzilla.redhat.com/show_bug.cgi?id=881577
2013-02-14 16:19:38 +01:00
David Herrmann
a705d08519 getty-generator: fix handling systems without a console
If the system does not have any active console, we should not try to
create an empty symlink. Instead, create no symlink at all.

Otherwise, on systems with CONFIG_VT=n and no serial console, we will
create a symlink with an empty template parameter.
2012-12-02 18:18:27 +01:00
Shawn Landden
0d0f0c50d3 log.h: new log_oom() -> int -ENOMEM, use it
also a number of minor fixups and bug fixes: spelling, oom errors
that didn't print errors, not properly forwarding error codes,
few more consistency issues, et cetera
2012-07-26 11:48:26 +02:00
Shawn Landden
669241a076 use "Out of memory." consistantly (or with "\n")
glibc/glib both use "out of memory" consistantly so maybe we should
consider that instead of this.

Eliminates one string out of a number of binaries. Also fixes extra newline
in udev/scsi_id
2012-07-25 11:23:57 +02:00
Lennart Poettering
b7def68494 util: rename join() to strjoin()
This is to match strappend() and the other string related functions.
2012-07-13 13:41:01 +02:00
Kay Sievers
d2e54fae5c mkdir: append _label to all mkdir() calls that explicitly set the selinux context 2012-05-31 12:40:20 +02:00
Lennart Poettering
07719a21b6 manager: rework generator logic
Previously generated units were always placed at the end of the search
path. With this change there will be three unit dirs instead of one, to
place generated entries at the beginning, in the middle and at the end
of the search path:

beginning: for units that need to override all configuration, regardless
of user or vendor. Example use: system-update-generator uses this to
temporarily redirect default.target.

middle: for units that need to override vendor configuration, but not
vendor configuration. Example use: /etc/fstab should override vendor
supplied configuration (think /tmp), but should not override native user
configuration.

end: does not override anything but is available as well. Possible usage
might be to convert D-Bus bus service files to native units but allowing
vendor supplied native units to win.
2012-05-23 03:43:29 +02:00
Lennart Poettering
a690306153 log: make sure generators never log into the journal to avoid activation deadlocks
This makes all generators log to kmsg by default.
2012-05-22 22:00:37 +02:00
Lennart Poettering
337eebb936 container: spawn a getty instead of a sulogin in a container 2012-04-22 02:41:18 +02:00
Lennart Poettering
b562f5a57d build-sys: add stub makefiles to all subdirs to ease development with emacs 2012-04-13 21:37:59 +02:00
Kay Sievers
dce818b390 move all tools to subdirs 2012-04-12 17:54:42 +02:00