Clearing of the svc->pidfile was introduced in e1b87d70 for a
restriction that has now been removed.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This patch adds support for detecting if the Linux kernel Fint runs on
has support for cgroups v2. The probe is done very early, in runlevel
S, when attempting to mount /sys/fs/cgroup. Meaning, the log message
may be lost on systems that do not run sysklogd[1].
Here's the relevant logs from a system running myLinux on a kernel
that has cgroups v2 support disabled:
Jan 10 20:19:40 anarchy finit[1]: myLinux 2021.11-696-g8fddaf36ed, entering runlevel S
Jan 10 20:19:40 anarchy finit[1]: Kernel does not support cgroups v2, disabling.
Jan 10 20:19:41 anarchy finit[1]: myLinux 2021.11-696-g8fddaf36ed, entering runlevel 2
All code paths that attempt to set or query kernel cgroups config has
been short circuited when this happens. However, this does not apply
to any cgroup related config in the Finit .conf files -- which may of
course be omitted. Yet, if configuration directives exist, they will
be parsed and may cause error.
Also, the initctl tool checks if /sys/fs/cgroup is mounted at runtime
and disables all status output and commands that rely on the feature.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
As suggested in issue #197, this new command: 'initctl id [NAME]'
lists identities of all, or named, services. E.g,
# initctl id telnetd
telnetd:23
telnetd:2323
The NAME argument is optional, when omitted it lists all enabled
run/task/sysv/service in the system, with their full name, and any
optional identitty. E.g.
# initctl id
dropbear
tty:console
mdnsd
mini-snmpd
smcrouted
sntpd
ssdpd
sysklogd
watchdogd
httpd
telnetd:23
telnetd:2323
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
When the system has multiple services 'foo' the initctl command
'status foo' should give a focused overview of all matching foo:*,
whereas a 'status foo:2' should show the detailed view of that
particular instance.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Due to an unfortunate name clash with the DirectFB project LiTE, the
libite (-lite) project had to change its header namespace from
lite/*.h -> libite/*.h
This patch adds support for the new namepace in Finit, triggered by the
define _LIBITE_LITE, from the .pc file read by pkg-config. This should
only be needed on systems that install libite without the compatibility
symlink lite -> libite/ in the staging include directory.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This patch moves the built-in getty out of Finit into /libexec/finit/,
reducing the size of the Finit binary and simplifying the code.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Initial refactor of the tty implementation to use the service/run/task
general backend. This enables all the features of services also for
ttys, except logging because it makes no sense.
Work in progress:
- plugins/tty.c does not work anymore, could possibly be removed in
favor of usinga (a new) condition instead (if-tty-exists)
- fallback tty does not work anymore, should we remove it, or can we
handle it as an optional built-in with (a new) condition?
- @console does not work anymore, needs to generate N cloned services
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
- Show if exited/signaled
- Show status code and the std /NAME
- Show signal value and the std /NAME
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
No need to zero out whole buffer for strlcat(), or other string check
ops. Also drop a few completely useless memset() calls.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This is intended to be used with the 'top' command to aid in setting up
and verifying proper limits for services.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This patch corrects a logical glitch, or design flaw, in initctl. The
'restart FOO' command did not stop+start FOO only send SIGHUP (provided
FOO supports SIGHUP). Hence, a new command 'reload FOO' is introduced,
which does exactly that, and 'restart FOO' now stops and restarts FOO.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Two major bugs: `if (!cg)` and missing `strdup(path)`.
Also convert to use std hash table for lookup of previous cpu load value
for a given cgroup path. The hash table is sized after the current num.
rows on the screen -- resize currently not supported. The value given
to hcreate() should be 25% greater than the estimated num of entries,
but we take a wild guess just to make sure we don't run out of space at
runtime.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
The ps command currently only lists processes in the three main control
groups: init, system, user. Kernel threads are not show at all.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
To aid with debugging, highlight if env file, binary, or both are the
missing component(s) and causing status 'missing'.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
In 7447192 we dropped support for 'cond set' and 'cond clear' commands
with the motivation they were unsafe and sent the wrong message to the
user. That was true, but mostly because it was too generic and required
the user to call `initctl reload` to apply the changes.
This patch restores the behavior, albeit in a very reduced and simple
format. All conditions set with this command are constrained to the
'usr/...' namespace. No subdirectories are allowed. The argument to
the 'cond set|clear' command is disallowed if it contains '/' or '.'
but anything else is supported, for example:
initctl cond set foo:2
creates a static/oneshot condition in /run/finit/cond/usr/foo:2
These conditions are static and are fully handled by the user. The
initctl command is the recommended, and only supported, way of setting
and clearing usr conditions.
This patch also includes a new plugin, usr.so, which is a very simple
inotify plugin for the /run/finit/cond/usr/ directory. When files are
created or removed here the plugin tells the Finit condition engine to
update and trigger service changes.
For instance, the following service is not started by default at boot:
service <usr/foo> myservice -- MyService
However, as soon as `initctl cond set foo` is called, myservice starts.
Consequently, it is stopped when `initctl cond clr foo` is called.
Another major difference from the original is that this implementation
doesn't send IPC commands to create/delete the conditions. This makes
calling these new commands non-blocking so they can be used very early
in the bootstrap, by plugins, if needed.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
- Use _PATH_foo for all condition paths, *with* trailing /
- Read condition file first, may not exist, in which case we save time
- Change from libte makepath() to mkpath(), this changes from hard-coded
0777 perms on all cond dirs to 0755 -- possible security fix
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
No point in using rq.data, which could have been modified, instead use
the input argument to the function in the error message.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Joachim Wiberg