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45 commits

Author SHA1 Message Date
David Oberhollenzer
9f9807d4d3 cleanup: initd: simplify and merge linux specific code into main.c 
Targetting anything else than Linux isn't really relevant. All
other systems ($BSD and other Unices) are a closed ecosystem
where kernel & userspace are developed together. They don't need
something like a third party init system, so compatibillity can
be largely ignored.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2020-03-31 13:09:04 +02:00
David Oberhollenzer
1c72dd2c2f Fix remove by id 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-06-16 16:09:49 +02:00
David Oberhollenzer
c1cb8491f9 fix: actually remove started service from list 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-29 21:00:53 +01:00
David Oberhollenzer
c8c0f10ce1 Keep original respawn limit 
We also want this meachanism to still work for manually started
service (especially after reloading services).

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-29 21:00:53 +01:00
David Oberhollenzer
be06641904 cleanup: init socket wire format 
Replace array adhockery with structs and make use of the handy
endianness conversion macros.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-29 21:00:53 +01:00
David Oberhollenzer
7cfe6e8458 cleanup: move init specific stuff of init socket to initd 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-29 21:00:53 +01:00
David Oberhollenzer
028394b8a5 Add service configuration reloading 
This commit add the ability to initd to reload the service configuration
while running. The new configuration is merged with the existing one as
follows:

For each target:
 - If the existing service list is not NULL, we have not started that
   target yet. Simply replace it with the new list.
 - If it is NULL, the services have already been started.
    - First, remove all entries for services in that target that no
      loner exist (except from the 'running' list).
    - Second, add new services that we don't have yet. Treat them as
      recently diseased and let the user start them manualy.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-29 21:00:53 +01:00
David Oberhollenzer
ba12700080 Add start/stop commands to init socket 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-28 15:32:10 +01:00
David Oberhollenzer
c16735414b initd: Hand out unique IDs to services 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-28 13:45:33 +01:00
David Oberhollenzer
d16d260181 Add filter argument to status request 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-27 17:48:32 +01:00
David Oberhollenzer
72c02308cd Fix: actually process SIGUSR1 in initd 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-25 16:32:45 +01:00
David Oberhollenzer
a6c059203b Fix warnings from gcc 8.3 + musl build 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-20 20:43:41 +01:00
David Oberhollenzer
e21840cfce initd: don't start runsvc for services without exec block 
First in rdsvc, tag the services that *do* have exec lines, even if we don't
read them.

Second, if a service does not have that flag set, don't try to execute it.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-20 15:44:14 +01:00
David Oberhollenzer
a9602ad6e0 Cleanup status reporting 
- mimic format of initd
 - skip formatting if not a tty
 - distinguish exited because failed vs exited because done

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-18 18:47:20 +01:00
David Oberhollenzer
40ad83dc6a initd: implement handling of socket requests 
Actually process requests and send an answer to status inquiries.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-18 18:29:02 +01:00
David Oberhollenzer
08f72865b2 Add init socket to initd 
Create a socket if boot target is done. Close and reopen socket
if SIGUSR1 is received.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-18 14:15:58 +01:00
David Oberhollenzer
c544fcc7a3 initd: store completed services in list instead of deleting them 
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
 2019-03-15 10:46:11 +01:00
David Oberhollenzer
c14c3c0173 Relicense what is left of the init system under OpenBSD style ISC license 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-11-23 13:16:08 +01:00
David Oberhollenzer
b864c727c8 Remove unused telinit code 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-11-04 15:33:00 +01:00
David Oberhollenzer
c0e8c7e245 cleanup: let rdline_init open the file 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-11-04 15:02:11 +01:00
David Oberhollenzer
34f542b7cc Seperate init specific code from utility code 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-11-04 14:30:16 +01:00
David Oberhollenzer
b0b6c68e38 Only enable signals in signalfd that initd actually handles 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-09-01 00:00:40 +02:00
David Oberhollenzer
066efaa33e initd: automatically do a shutdown/reboot when the target is completed 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-08-24 21:17:31 +02:00
David Oberhollenzer
ec6264bad5 initd: accept sigterm and simply initiate shutdown target 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-08-24 21:17:31 +02:00
David Oberhollenzer
25afc0b3d0 Remove ctrl+alt+del target, simply initiate reboot target 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-08-24 21:17:31 +02:00
David Oberhollenzer
ec74e5bbee initd: restructure and merge service supervision code 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-08-24 21:17:31 +02:00
David Oberhollenzer
ed23d075ca Make mksock() more generic, move to util library 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-06-09 15:32:29 +02:00
David Oberhollenzer
bf63f78b66 Split configuration parser and utility library 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-06-09 15:32:29 +02:00
David Oberhollenzer
59731dd69b Add helper program for running services 
We no longer need to keep entire scripts in init program (i.e. saving space)
and reduce the code and complexity of the init program.

The runsvc tool can later be extended to do more complex child setup, such
as configuring namespaces or seccomp without adding complexity or memory
footprint to init.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-22 13:41:18 +02:00
David Oberhollenzer
720220a3c3 Add flags to selectively skip fields in service files 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-22 13:41:18 +02:00
David Oberhollenzer
2cb64e48fc Move initd signal setup to platform specific file 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-15 13:24:13 +02:00
David Oberhollenzer
a3437967a2 Rely on PATH variable for running init programs 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-12 12:51:33 +02:00
David Oberhollenzer
55d4a328c9 Read environment for init from config file 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-12 12:05:15 +02:00
David Oberhollenzer
6642b2b2bf Don't pre-allocate argument vector for command lines 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-11 19:45:26 +02:00
David Oberhollenzer
b81668e045 Minor cleanup 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-07 16:19:38 +02:00
David Oberhollenzer
43274e3910 Remove setup_tty function 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-07 01:33:58 +02:00
David Oberhollenzer
ffb655126a Create init socket after reaching boot target 
Filesystem might not be available before then.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-07 01:33:58 +02:00
David Oberhollenzer
04a23330e4 Merge preprocessing of command lines 
- Common function for splitting string into argument vector
 - Preprocess & split command lines while parsing the service file
 - Specify "before" and "after" dependencies in a single line

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-04 14:58:01 +02:00
David Oberhollenzer
56e6004336 Simplifiy service file syntax 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-04-04 14:08:12 +02:00
David Oberhollenzer
160ef94e8b Add service respawn limit 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-26 00:40:28 +02:00
David Oberhollenzer
09115f9a97 Print status when starting a service marked as respawn 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-25 22:07:33 +02:00
David Oberhollenzer
021f091082 Use services to implement shutdown/reboot sequence 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-25 13:28:07 +02:00
David Oberhollenzer
a71c92b33d Unify naming of service to shorthand svc 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-25 12:14:06 +02:00
David Oberhollenzer
1b3b98135e Add license headers and comments to source 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-24 22:50:28 +01:00
David Oberhollenzer
9a88f7da45 Initial commit 
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
 2018-03-24 17:04:20 +01:00