[haiku-bugs] [Haiku] #6168: [RFC] Add syslog support to boot loader
- From: "andreasf" <trac@xxxxxxxxxxxx>
- Date: Sun, 13 Jun 2010 21:58:09 -0000
#6168: [RFC] Add syslog support to boot loader
--------------------------------+-------------------------------------------
Reporter: andreasf | Owner: axeld
Type: enhancement | Status: new
Priority: normal | Milestone: R1
Component: System/Boot Loader | Version: R1/Development
Keywords: | Blockedby:
Patch: 0 | Platform: All
Blocking: |
--------------------------------+-------------------------------------------
When debugging without a serial port, network-based output would provide
an alternative to re-typing screen output or taking pictures.
As a proof of concept this patch adds UDP-based '''syslog-ng''' support
([http://datatracker.ietf.org/doc/rfc5424/ RFC5424],
[http://datatracker.ietf.org/doc/rfc5426/ RFC5426]) to the boot loader.
While UDP is potentially lossy, unidirectional broadcast of datagrams
avoids server discovery/selection and it avoids a dependency on still-
pending TCP support patches (#5240).
Output starts once the network stack is initialized - on ppc currently
only when network-booting, before searching for boot volumes - and with
#6166 patches until the last {{{malloc()}}} for kernel ELF sections.
Unfortunately this does not work in the kernel though. Linking the boot
loader's network stack into the ppc kernel does work, but depending on the
point of initialization either the stack initialization and sending
succeed but datagrams do not arrive (e.g., in
{{{PPCPlatform::InitPostVM()}}}), or the stack initialization's
{{{of_open()}}} hangs as in #5160 and #4385 (e.g., in {{{main2()}}}).
--
Ticket URL: <http://dev.haiku-os.org/ticket/6168>
Haiku <http://dev.haiku-os.org>
Haiku - the operating system.
Other related posts:
