main.c File Reference

#include "common.h"
#include <pwd.h>
#include <grp.h>
#include <glib.h>
#include "error.h"
#include "stringex.h"
#include "sync.h"
#include "malloc.h"
#include "cluster.h"
#include "fileutils.h"
#include "socket.h"
#include "syscalls.h"
#include "rules.h"
#include "posix-hacks.h"

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Macros
#define	PEF_NONE   0
#define	PEF_UNEXPECTED_END   1
#define	PEF_UNSET_VARIABLE   2
#define	PEF_LAZY_SUBSTITUTION   4
#define	UGID_PRESERVE   (1<<16)

Enumerations
enum	xstatfield {   X_STAT_FIELD_RESET = 0 , X_STAT_FIELD_DEV , X_STAT_FIELD_INO , X_STAT_FIELD_MODE ,   X_STAT_FIELD_NLINK , X_STAT_FIELD_UID , X_STAT_FIELD_GID , X_STAT_FIELD_RDEV ,   X_STAT_FIELD_SIZE , X_STAT_FIELD_BLKSIZE , X_STAT_FIELD_BLOCKS , X_STAT_FIELD_ATIME ,   X_STAT_FIELD_MTIME , X_STAT_FIELD_CTIME , X_STAT_FIELD_ALL }
enum	x_csc_bm { X_CSC_RESET = 0 , X_CSC_MON_STAT }

Functions
int	syntax ()
pid_t	waitpid_timed (pid_t child_pid, int *status_p, long sec, long nsec)
int	parent_isalive ()
void	child_sigchld ()
int	sethandler_sigchld (void(*handler)())
void *	watchforparent (void *parent_pid_p)
pid_t	fork_helper ()
int	version ()
int	clsyncapi_getapiversion ()
	Returns currect API version.
const char *	parameter_get (const char *variable_name, void *_ctx_p)
	Gets raw (string) an option value by an option name.
const char *	parameter_get_name_by_id (const uint16_t param_id)
	Gets the name of the parameter by it's id.
const char *	parameter_get_wmacro (const char *variable_name, void *_ctx_p)
	Gets raw (string) an option value by an option name and updates ctx_p->synchandler_argf.
char *	parameter_expand (ctx_t *ctx_p, char *arg, int exceptionflags, int *macro_count_p, int *expand_count_p, const char *(*parameter_get)(const char *variable_name, void *arg), void *parameter_get_arg)
	Expands option values, e. g. "/var/log/clsync-%label%.pid" -> "/var/log/clsync-clone.pid".
const char *	parametersource_get_name (paramsource_t paramsource)
	Gets the name of the parameter source by it's id.
static int	synchandler_arg (char *arg, size_t arg_len, void *_ctx_p, enum shargsid shargsid)
static int	synchandler_arg0 (char *arg, size_t arg_len, void *_ctx_p)
static int	synchandler_arg1 (char *arg, size_t arg_len, void *_ctx_p)
static long	xstrtol (const char *str, int *err)
static long	xstrtol_trim (char *str, int *err)
static __extension__ int	parse_customsignals (ctx_t *ctx_p, char *arg)
static __extension__ int	parse_parameter (ctx_t *ctx_p, uint16_t param_id, char *arg, paramsource_t paramsource)
int	arguments_parse (int argc, char *argv[], struct ctx *ctx_p)
void	gkf_parse (ctx_t *ctx_p, GKeyFile *gkf, paramsource_t paramsource)
int	configs_parse (ctx_t *ctx_p, paramsource_t paramsource)
int	ctx_check (ctx_t *ctx_p)
int	config_block_parse (ctx_t *ctx_p, const char *const config_block_name)
int	ctx_set (ctx_t *ctx_p, const char *const parameter_name, const char *const parameter_value)
void	ctx_cleanup (ctx_t *ctx_p)
int	becomedaemon ()
int	main_cleanup (ctx_t *ctx_p)
int	main_rehash (ctx_t *ctx_p)
int	main_status_update (ctx_t *ctx_p)
int	main (int _argc, char *_argv[])

Variables
static const struct option	long_options []
uint32_t	xstatfield_to_statfield []
static char *const	stat_fields []
uint32_t	xcsc_to_csc []
static char *const	syscalls_bitmask []
static char *const	socketauth []
static char *const	notify_engines []
static char *const	output_methods []
static char *const	modes []
int	ncpus
pid_t	parent_pid = 0
pthread_t	pthread_watchforparent
FILE *	main_statusfile_f
int	argc
char **	argv

Macro Definition Documentation

PEF_LAZY_SUBSTITUTION

#define PEF_LAZY_SUBSTITUTION   4

Definition at line 673 of file main.c.

PEF_NONE

#define PEF_NONE   0

Definition at line 670 of file main.c.

PEF_UNEXPECTED_END

#define PEF_UNEXPECTED_END   1

Definition at line 671 of file main.c.

PEF_UNSET_VARIABLE

#define PEF_UNSET_VARIABLE   2

Definition at line 672 of file main.c.

UGID_PRESERVE

#define UGID_PRESERVE   (1<<16)

Definition at line 2726 of file main.c.

Enumeration Type Documentation

x_csc_bm

enum x_csc_bm

Enumerator
X_CSC_RESET
X_CSC_MON_STAT

Definition at line 253 of file main.c.

xstatfield

enum xstatfield

Enumerator
X_STAT_FIELD_RESET
X_STAT_FIELD_DEV
X_STAT_FIELD_INO
X_STAT_FIELD_MODE
X_STAT_FIELD_NLINK
X_STAT_FIELD_UID
X_STAT_FIELD_GID
X_STAT_FIELD_RDEV
X_STAT_FIELD_SIZE
X_STAT_FIELD_BLKSIZE
X_STAT_FIELD_BLOCKS
X_STAT_FIELD_ATIME
X_STAT_FIELD_MTIME
X_STAT_FIELD_CTIME
X_STAT_FIELD_ALL

Definition at line 198 of file main.c.

Function Documentation

arguments_parse()

int arguments_parse	(	int	argc,
		char *	argv[],
		struct ctx *	ctx_p )

Definition at line 1988 of file main.c.

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becomedaemon()

int becomedaemon

(

)

Definition at line 2619 of file main.c.

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child_sigchld()

void child_sigchld

(

)

Definition at line 430 of file main.c.

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clsyncapi_getapiversion()

int clsyncapi_getapiversion

(

)

Returns currect API version.

Return values

api_version

Version of clsync's API

Definition at line 550 of file main.c.

config_block_parse()

int config_block_parse	(	ctx_t *	ctx_p,
		const char *const	config_block_name )

Definition at line 2547 of file main.c.

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configs_parse()

int configs_parse	(	ctx_t *	ctx_p,
		paramsource_t	paramsource )

Definition at line 2083 of file main.c.

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ctx_check()

int ctx_check

(

ctx_t *

ctx_p

)

Definition at line 2145 of file main.c.

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ctx_cleanup()

void ctx_cleanup

(

ctx_t *

ctx_p

)

Definition at line 2582 of file main.c.

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ctx_set()

int ctx_set	(	ctx_t *	ctx_p,
		const char *const	parameter_name,
		const char *const	parameter_value )

Definition at line 2560 of file main.c.

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fork_helper()

pid_t fork_helper

(

)

Definition at line 463 of file main.c.

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gkf_parse()

void gkf_parse	(	ctx_t *	ctx_p,
		GKeyFile *	gkf,
		paramsource_t	paramsource )

Definition at line 2046 of file main.c.

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main()

int main	(	int	_argc,
		char *	_argv[] )

Definition at line 2727 of file main.c.

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main_cleanup()

int main_cleanup

(

ctx_t *

ctx_p

)

Definition at line 2642 of file main.c.

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main_rehash()

int main_rehash

(

ctx_t *

ctx_p

)

Definition at line 2653 of file main.c.

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main_status_update()

int main_status_update

(

ctx_t *

ctx_p

)

Definition at line 2673 of file main.c.

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parameter_expand()

char * parameter_expand	(	ctx_t *	ctx_p,
		char *	arg,
		int	exceptionflags,
		int *	macro_count_p,
		int *	expand_count_p,
		const char *(*	parameter_get )(const char *variable_name, void *arg),
		void *	parameter_get_arg )

Expands option values, e. g. "/var/log/clsync-%label%.pid" -> "/var/log/clsync-clone.pid".

Parameters

[in]	ctx_p	Context
[in]	arg	An allocated string with unexpanded value. Will be free'd
[in]	exceptionflags	A bit field of allowed exceptions during parameter expansion: PEF_NONE No exceptions are allowed PEF_UNEXPECTED_END Do not warn about unexpected end of macro-substitution PEF_UNSET_VARIABLE Do not warn about unset variable PEF_LAZY_SUBSTITUTION Perform lazy substitution preserving original value
[out]	macro_count_p	A pointer to count of found macro-s
[out]	expand_count_p	A pointer to count of expanded macro-s
[in]	parameter_get	A function to resolve macro-s
[in]	parameter_get_arg	An argument to the function

Return values

char	* Pointer to newly allocated string, if successful
NULL	On error

Definition at line 693 of file main.c.

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parameter_get()

const char * parameter_get	(	const char *	variable_name,
		void *	_ctx_p )

Gets raw (string) an option value by an option name.

Parameters

[in]	_ctx_p	Context
[in]	variable_name	The name of the option

Return values

char	* Pointer to constant string, if successful
NULL	On error

Definition at line 565 of file main.c.

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parameter_get_name_by_id()

const char * parameter_get_name_by_id

(

const uint16_t

param_id

)

Gets the name of the parameter by it's id.

Parameters

[in]

param_id

The id of the parameter

Return values

char	* Pointer to a constant string, if successful
NULL	On error

Definition at line 599 of file main.c.

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parameter_get_wmacro()

const char * parameter_get_wmacro	(	const char *	variable_name,
		void *	_ctx_p )

Gets raw (string) an option value by an option name and updates ctx_p->synchandler_argf.

Parameters

[in]	_ctx_p	Context
[in]	variable_name	The name of the option

Return values

char	* Pointer to newly allocated string, if successful
NULL	On error

Definition at line 634 of file main.c.

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parametersource_get_name()

const char * parametersource_get_name

(

paramsource_t

paramsource

)

Gets the name of the parameter source by it's id.

Parameters

[in]

paramsource

The id of the parameter source

Return values

char	* Pointer to a constant string, if successful
NULL	On error

Definition at line 852 of file main.c.

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parent_isalive()

int parent_isalive

(

)

Definition at line 415 of file main.c.

parse_customsignals()

static __extension__ int parse_customsignals ( ctx_t * ctx_p, char * arg )

inlinestatic

Definition at line 968 of file main.c.

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parse_parameter()

static __extension__ int parse_parameter ( ctx_t * ctx_p, uint16_t param_id, char * arg, paramsource_t paramsource )

static

Definition at line 1060 of file main.c.

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sethandler_sigchld()

int sethandler_sigchld

(

void(*

handler )()

)

Definition at line 440 of file main.c.

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synchandler_arg()

static int synchandler_arg ( char * arg, size_t arg_len, void * _ctx_p, enum shargsid shargsid )

inlinestatic

Definition at line 877 of file main.c.

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synchandler_arg0()

static int synchandler_arg0 ( char * arg, size_t arg_len, void * _ctx_p )

static

Definition at line 921 of file main.c.

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synchandler_arg1()

static int synchandler_arg1 ( char * arg, size_t arg_len, void * _ctx_p )

static

Definition at line 926 of file main.c.

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syntax()

int syntax

(

)

Definition at line 361 of file main.c.

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version()

int version

(

)

Definition at line 484 of file main.c.

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waitpid_timed()

pid_t waitpid_timed	(	pid_t	child_pid,
		int *	status_p,
		long	sec,
		long	nsec )

Definition at line 388 of file main.c.

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watchforparent()

void * watchforparent

(

void *

parent_pid_p

)

Definition at line 451 of file main.c.

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xstrtol()

static long xstrtol ( const char * str, int * err )

inlinestatic

Definition at line 932 of file main.c.

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xstrtol_trim()

static long xstrtol_trim ( char * str, int * err )

inlinestatic

Definition at line 948 of file main.c.

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Variable Documentation

argc

int argc

Definition at line 2724 of file main.c.

argv

char** argv

Definition at line 2725 of file main.c.

long_options

const struct option long_options[]

static

Definition at line 59 of file main.c.

main_statusfile_f

FILE* main_statusfile_f

Definition at line 2672 of file main.c.

modes

char* const modes[]

static

Initial value:

= {
    [MODE_UNSET]        = "",
    [MODE_SIMPLE]       = "simple",
    [MODE_DIRECT]       = "direct",
    [MODE_SHELL]        = "shell",
    [MODE_RSYNCSHELL]   = "rsyncshell",
    [MODE_RSYNCDIRECT]  = "rsyncdirect",
    [MODE_RSYNCSO]      = "rsyncso",
    [MODE_SO]       = "so",
    NULL
}

Definition at line 349 of file main.c.

ncpus

int ncpus

Definition at line 385 of file main.c.

notify_engines

char* const notify_engines[]

static

Initial value:

= {
    [NE_UNDEFINED]      = "",
    [NE_INOTIFY]        = "inotify",
    [NE_KQUEUE]     = "kqueue",
    [NE_FANOTIFY]       = "fanotify",
    [NE_BSM]        = "bsm",
    [NE_BSM_PREFETCH]   = "bsm_prefetch",
    [NE_DTRACEPIPE]     = "dtracepipe",
    [NE_GIO]        = "gio",
    NULL
}

Definition at line 330 of file main.c.

output_methods

char* const output_methods[]

static

Initial value:

= {
    [OM_STDERR]     = "stderr",
    [OM_STDOUT]     = "stdout",
    [OM_SYSLOG]     = "syslog",
    NULL
}

Definition at line 342 of file main.c.

parent_pid

pid_t parent_pid = 0

Definition at line 386 of file main.c.

pthread_watchforparent

pthread_t pthread_watchforparent

Definition at line 462 of file main.c.

socketauth

char* const socketauth[]

static

Initial value:

= {
    [SOCKAUTH_UNSET]    = "",
    [SOCKAUTH_NULL]     = "null",
 
    NULL
}

Definition at line 305 of file main.c.

stat_fields

char* const stat_fields[]

static

Initial value:

= {
    [X_STAT_FIELD_RESET]        = "",
    [X_STAT_FIELD_DEV]      = "dev",
    [X_STAT_FIELD_INO]      = "ino",
    [X_STAT_FIELD_MODE]     = "mode",
    [X_STAT_FIELD_NLINK]        = "nlink",
    [X_STAT_FIELD_UID]      = "uid",
    [X_STAT_FIELD_GID]      = "gid",
    [X_STAT_FIELD_RDEV]     = "rdev",
    [X_STAT_FIELD_SIZE]     = "size",
    [X_STAT_FIELD_BLKSIZE]      = "blksize",
    [X_STAT_FIELD_BLOCKS]       = "blocks",
    [X_STAT_FIELD_ATIME]        = "atime",
    [X_STAT_FIELD_MTIME]        = "mtime",
    [X_STAT_FIELD_CTIME]        = "ctime",
    [X_STAT_FIELD_ALL]      = "*",
    NULL
}

Definition at line 234 of file main.c.

syscalls_bitmask

char* const syscalls_bitmask[]

static

Initial value:

= {
    [X_CSC_RESET]           = "",
    [X_CSC_MON_STAT]        = "mon_stat",   
    NULL
}

Definition at line 263 of file main.c.

xcsc_to_csc

uint32_t xcsc_to_csc[]

Initial value:

= {
    [X_CSC_RESET]           = CSC_RESET,
    [X_CSC_MON_STAT]        = CSC_MON_STAT,
}

Definition at line 258 of file main.c.

xstatfield_to_statfield

uint32_t xstatfield_to_statfield[]

Initial value:

= {
    [X_STAT_FIELD_RESET]        = STAT_FIELD_RESET,
    [X_STAT_FIELD_DEV]      = STAT_FIELD_DEV,
    [X_STAT_FIELD_INO]      = STAT_FIELD_INO,
    [X_STAT_FIELD_MODE]     = STAT_FIELD_MODE,
    [X_STAT_FIELD_NLINK]        = STAT_FIELD_NLINK,
    [X_STAT_FIELD_UID]      = STAT_FIELD_UID,
    [X_STAT_FIELD_GID]      = STAT_FIELD_GID,
    [X_STAT_FIELD_RDEV]     = STAT_FIELD_RDEV,
    [X_STAT_FIELD_SIZE]     = STAT_FIELD_SIZE,
    [X_STAT_FIELD_BLKSIZE]      = STAT_FIELD_BLKSIZE,
    [X_STAT_FIELD_BLOCKS]       = STAT_FIELD_BLOCKS,
    [X_STAT_FIELD_ATIME]        = STAT_FIELD_ATIME,
    [X_STAT_FIELD_MTIME]        = STAT_FIELD_MTIME,
    [X_STAT_FIELD_CTIME]        = STAT_FIELD_CTIME,
    [X_STAT_FIELD_ALL]      = STAT_FIELD_ALL,
}

Definition at line 216 of file main.c.