[asterisk-bugs] [JIRA] (ASTERISK-26350) safe_asterisk script fails to start if there is no /dev/tty9 (openvz/lxc)

[Walter Doekes (JIRA)]

Walter Doekes created ASTERISK-26350:
----------------------------------------

             Summary: safe_asterisk script fails to start if there is no /dev/tty9 (openvz/lxc)
                 Key: ASTERISK-26350
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26350
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
            Reporter: Walter Doekes
            Severity: Minor


If you use the safe_asterisk script, it uses hardcoded defaults before running configurable values from /etc/asterisk/startup.d.

On of those hardcoded values is TTY=9.

When it gets to this bit:
{noformat}

# Don't fork when running "safely"
#
ASTARGS=""
if test -n "$TTY" && test "$TTY" != "no"; then
        if test -c /dev/tty${TTY}; then
                TTY=tty${TTY}
        elif test -c /dev/vc/${TTY}; then
                TTY=vc/${TTY}
        else
                message "Cannot find specified TTY (${TTY})"
                exit 1
        fi
        ASTARGS="${ASTARGS} -vvvg"
        if test "$CONSOLE" != "no"; then
                ASTARGS="${ASTARGS} -c"
        fi
fi
{noformat}
safe_asterisk stops if there is no /dev/tty9 and no /dev/vc/9, before custom config from startup.d is run where we can alter the TTY= value.

In certain containerized environments (e.g. lxc and openvz) there is no /dev/tty9, and safe_asterisk is unusable unless manually altered.

Suggested fix: don't die at that point, but simply warn and blank out the TTY variable.



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