mirror of
https://github.com/pygos/init.git
synced 2024-05-19 20:26:14 +02:00
David Oberhollenzer
028394b8a5
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>
104 lines
2.2 KiB
C
104 lines
2.2 KiB
C
/* SPDX-License-Identifier: ISC */
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#ifndef INIT_H
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#define INIT_H
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <endian.h>
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#include <stdio.h>
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#include <errno.h>
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#include <poll.h>
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#include <linux/reboot.h>
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#include <sys/signalfd.h>
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#include <sys/reboot.h>
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#include <signal.h>
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#include "initsock.h"
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#include "service.h"
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#include "util.h"
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#define RUNSVCBIN SCRIPTDIR "/runsvc"
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enum {
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STATUS_OK = 0,
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STATUS_FAIL,
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STATUS_WAIT,
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STATUS_STARTED,
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};
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/********** main.c **********/
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void target_completed(int target);
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/********** runsvc.c **********/
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/*
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Invoke the runsvc command to execute the comands of a service.
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Returns the pid of the child process containing the runsvc instance.
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*/
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pid_t runsvc(service_t *svc);
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/********** status.c **********/
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/*
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Print a status message. Type is either STATUS_OK, STATUS_FAIL,
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STATUS_WAIT or STATUS_STARTED.
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A new-line is appended to the mssage, UNLESS type is STATUS_WAIT.
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If update is true, print a carriage return first to overwrite the
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current line (e.g. after a STATUS_WAIT message).
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*/
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void print_status(const char *msg, int type, bool update);
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/********** supervisor.c **********/
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void supervisor_handle_exited(pid_t pid, int status);
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void supervisor_set_target(int next);
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void supervisor_init(void);
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bool supervisor_process_queues(void);
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void supervisor_reload_config(void);
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void supervisor_answer_status_request(int fd, const void *dest_addr,
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size_t addrlen, E_SERVICE_STATE filter);
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void supervisor_start(int id);
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void supervisor_stop(int id);
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/********** signal_<platform>.c **********/
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/*
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Setup signal handling. Returns -1 on error, a file descriptor on
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success.
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The returned file descriptor can be polled and becomes readable
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when a signal arrives. Reading from it returns a signalfd_siginfo
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structure.
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The returned file descriptor has the close on exec flag set.
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The kernel is also told to send us SIGINT signals if a user presses
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the local equivalent of CTRL+ALT+DEL.
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*/
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int sigsetup(void);
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/*
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Undo everything that sigsetup() changed about signal handling and
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restore the default.
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*/
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void sigreset(void);
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#endif /* INIT_H */
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