mirror of
https://github.com/pygos/init.git
synced 2024-11-25 12:30:42 +01:00
056d3c8e64
This commit adds a "truncate" flag that can be added to a service description between the "tty" keyword and the path string. If the flag is set, the output file is truncated to 0 after opening. This probably requires some remodeling in the future as the tty keyword no longer deals with just tty devices. Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
|
|
/*
|
|
* Copyright (C) 2018 - David Oberhollenzer
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef SERVICE_H
|
|
#define SERVICE_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
enum {
|
|
/*
|
|
Start the service in the background and continue with
|
|
other services. The service will eventually terminate.
|
|
*/
|
|
SVC_ONCE = 0,
|
|
SVC_WAIT, /* run service and wait until it finishes */
|
|
|
|
/*
|
|
Similar to SVC_ONCE, but restart the service when
|
|
it terminates.
|
|
*/
|
|
SVC_RESPAWN,
|
|
};
|
|
|
|
enum {
|
|
TGT_BOOT = 0, /* run service when the system boots */
|
|
TGT_SHUTDOWN, /* run service when at system shut down */
|
|
TGT_REBOOT, /* run service when during system reboot */
|
|
TGT_CAD, /* run service when CTRL+ALT+DEL is pressed */
|
|
|
|
TGT_MAX
|
|
};
|
|
|
|
enum {
|
|
RDSVC_NO_FNAME = 0x01, /* do not store a copy of the filename */
|
|
RDSVC_NO_EXEC = 0x02, /* do not store executable script */
|
|
RDSVC_NO_CTTY = 0x04, /* do not store the controlling tty */
|
|
RDSVC_NO_DEPS = 0x08, /* do not store dependencies */
|
|
};
|
|
|
|
enum {
|
|
/* truncate stdout */
|
|
SVC_FLAG_TRUNCATE_OUT = 0x01,
|
|
};
|
|
|
|
typedef struct exec_t {
|
|
struct exec_t *next;
|
|
int argc; /* number of elements in argument vector */
|
|
char args[]; /* argument vectot string blob */
|
|
} exec_t;
|
|
|
|
typedef struct service_t {
|
|
struct service_t *next;
|
|
|
|
char *fname; /* source file name */
|
|
|
|
int type; /* SVC_* service type */
|
|
int target; /* TGT_* service target */
|
|
char *desc; /* description string */
|
|
char *ctty; /* controlling tty or log file */
|
|
int rspwn_limit; /* maximum respawn count */
|
|
unsigned int flags; /* SVC_FLAG_* bit field */
|
|
|
|
/* linked list of command lines to execute */
|
|
exec_t *exec;
|
|
|
|
char *before; /* services that must be executed later */
|
|
char *after; /* services that must be executed first */
|
|
|
|
int num_before;
|
|
int num_after;
|
|
|
|
pid_t pid;
|
|
int status; /* process exit status */
|
|
|
|
char name[]; /* canonical service name */
|
|
} service_t;
|
|
|
|
typedef struct {
|
|
service_t *targets[TGT_MAX];
|
|
} service_list_t;
|
|
|
|
/*
|
|
Read a service from a file.
|
|
*/
|
|
service_t *rdsvc(int dirfd, const char *filename, int flags);
|
|
|
|
void delsvc(service_t *svc);
|
|
|
|
/*
|
|
Rebuild a service list by scanning a directory and parsing all
|
|
service descriptions.
|
|
|
|
Returns 0 on success, -1 on failure. The function takes care of
|
|
printing error messages on failure.
|
|
*/
|
|
int svcscan(const char *directory, service_list_t *list, int flags);
|
|
|
|
void del_svc_list(service_list_t *list);
|
|
|
|
/*
|
|
Sort a list of services by dependencies.
|
|
*/
|
|
service_t *svc_tsort(service_t *list);
|
|
|
|
const char *svc_type_to_string(int type);
|
|
|
|
int svc_type_from_string(const char *type);
|
|
|
|
const char *svc_target_to_string(int target);
|
|
|
|
int svc_target_from_string(const char *target);
|
|
|
|
#endif /* SERVICE_H */
|
|
|