mirror of https://github.com/octoleo/lsyncd.git
improved comments
This commit is contained in:
Axel Kittenberger
parent
af237aa691
commit
80baea16e0
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@ -1,5 +1,5 @@
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--==================================================================================================
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-- default-rsyncssh.lua
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- default-direct.lua
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--
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-- Keeps two directories with /bin/cp, /bin/rm and /bin/mv in sync.
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-- Startup still uses rsync tough.
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@ -7,15 +7,15 @@
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-- A (Layer 1) configuration.
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--
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-- Note:
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-- this is infact just configuration using Layer 1 configuration,
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-- this is infact just a configuration using Layer 1 configuration
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-- like any other. It only gets compiled into the binary by default.
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-- You can simply use a modified one, by copying everything into a
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-- config file of yours and call it differently.
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-- config file of yours and name it differently.
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--
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-- License: GPLv2 (see COPYING) or any later version
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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--==================================================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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if not default then error('default not loaded'); end
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if not default.rsync then error('default-direct (currently) needs default.rsync loaded'); end
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@ -1,19 +1,19 @@
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--==================================================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- default-rsync.lua
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--
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-- Syncs with rsync ("classic" Lsyncd)
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-- A (Layer 1) configuration.
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--
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-- Note:
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-- this is infact just configuration using Layer 1 configuration,
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-- this is infact just a configuration using Layer 1 configuration
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-- like any other. It only gets compiled into the binary by default.
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-- You can simply use a modified one, by copying everything into a
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-- config file of yours and call it differently.
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-- config file of yours and name it differently.
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--
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-- License: GPLv2 (see COPYING) or any later version
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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--==================================================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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if not default then error('default not loaded'); end
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if default.rsync then error('default-rsync already loaded'); end
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@ -1,19 +1,19 @@
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--==================================================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- default-rsyncssh.lua
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--
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-- Improved rsync - sync with rsync, but moves and deletes executed over ssh.
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-- A (Layer 1) configuration.
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--
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-- Note:
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-- this is infact just configuration using Layer 1 configuration,
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-- this is infact just a configuration using Layer 1 configuration
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-- like any other. It only gets compiled into the binary by default.
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-- You can simply use a modified one, by copying everything into a
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-- config file of yours and call it differently.
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-- config file of yours and name it differently.
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--
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-- License: GPLv2 (see COPYING) or any later version
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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--==================================================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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if not default then error('default not loaded'); end
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if default.rsyncssh then error('default-rsyncssh already loaded'); end
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15
lsyncd.c
15
lsyncd.c
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@ -1,18 +1,17 @@
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/**
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* lsyncd.c Live (Mirror) Syncing Demon
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*
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* License: GPLv2 (see COPYING) or any later version
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*
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* Authors: Axel Kittenberger <axkibe@gmail.com>
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*
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* -----------------------------------------------------------------------
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This is the core. It contains as minimal as possible glues
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* to the operating system needed for lsyncd operation. All high-level
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* logic is coded (when feasable) into lsyncd.lua
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*
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* This code assumes you have a 100 character wide display to view it, when tabstop is 4.
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*/
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* This code assumes you have a 100 character wide display to view it (when tabstop is 4)
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*
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* License: GPLv2 (see COPYING) or any later version
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* Authors: Axel Kittenberger <axkibe@gmail.com>
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*
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**/
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#include "lsyncd.h"
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111
lsyncd.h
111
lsyncd.h
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@ -1,22 +1,22 @@
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/**
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/**
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* lsyncd.h Live (Mirror) Syncing Demon
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*
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* License: GPLv2 (see COPYING) or any later version
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* Interface between the core modules.
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*
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* License: GPLv2 (see COPYING) or any later version
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* Authors: Axel Kittenberger <axkibe@gmail.com>
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*
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* Interface between the core modules.
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*/
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**/
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#ifndef LSYNCD_H
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#define LSYNCD_H
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/* some older machines need this to see pselect */
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// some older machines need this to see pselect
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#define _BSD_SOURCE 1
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#define _XOPEN_SOURCE 700
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#define _DARWIN_C_SOURCE 1
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/* includes needed for headerfile */
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// includes needed for headerfile
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#include "config.h"
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#include <signal.h>
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@ -26,94 +26,80 @@
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#define LUA_USE_APICHECK 1
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#include <lua.h>
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/*-----------------------------------------------------------------------------
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/**
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* Lsyncd runtime configuration
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*/
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extern struct settings {
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/* If not NULL Lsyncd logs into this file. */
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char * log_file;
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/* If true Lsyncd sends log messages to syslog */
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bool log_syslog;
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/* If not NULL the syslog identity (otherwise "Lsyncd") */
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char * log_ident;
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/* The syslog facility */
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int log_facility;
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/* -1 logs everything, 0 normal mode, LOG_ERROR errors only.*/
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int log_level;
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/* True if Lsyncd shall not daemonize. */
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bool nodaemon;
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/* If not NULL Lsyncd writes its pid into this file. */
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char * pidfile;
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char * log_file; // If not NULL Lsyncd logs into this file.
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bool log_syslog; // If true Lsyncd sends log messages to syslog
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char * log_ident; // If not NULL the syslog identity (otherwise "Lsyncd")
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int log_facility; // The syslog facility
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int log_level; // -1 logs everything, 0 normal mode, LOG_ERROR errors only.
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bool nodaemon; // True if Lsyncd shall not daemonize.
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char * pidfile; // If not NULL Lsyncd writes its pid into this file.
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} settings;
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/*-----------------------------------------------------------------------------
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* time comparisons - wrap around safe
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/**
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* time comparisons - wrap around safe
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*/
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#define time_after(a,b) ((long)(b) - (long)(a) < 0)
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#define time_before(a,b) time_after(b,a)
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#define time_after_eq(a,b) ((long)(a) - (long)(b) >= 0)
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#define time_before_eq(a,b) time_after_eq(b,a)
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/* returns (on Lua stack) the current kernels * clock state (jiffies) */
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// returns (on Lua stack) the current kernels * clock state (jiffies)
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extern int l_now(lua_State *L);
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/* pushes a runner function and the runner error handler onto Lua stack */
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// pushes a runner function and the runner error handler onto Lua stack
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extern void load_runner_func(lua_State *L, const char *name);
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/* set to 1 on hup signal or term signal */
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// set to 1 on hup signal or term signal
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extern volatile sig_atomic_t hup;
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extern volatile sig_atomic_t term;
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/*-----------------------------------------------------------------------------
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* wrappers for heap management, they exit if out-of-memory.
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/**
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* wrappers for heap management, they exit if out-of-memory.
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*/
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extern void * s_calloc(size_t nmemb, size_t size);
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extern void * s_malloc(size_t size);
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extern void * s_realloc(void *ptr, size_t size);
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extern char * s_strdup(const char *src);
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/*-----------------------------------------------------------------------------
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/**
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* Logging
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*/
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/* Returns the positive priority if name is configured to be logged, or -1 */
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// Returns the positive priority if name is configured to be logged, or -1
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extern int check_logcat(const char *name);
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/* logs a string */
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// logs a string
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#define logstring(cat, message) \
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{int p; if ((p = check_logcat(cat)) <= settings.log_level) \
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{logstring0(p, cat, message);}}
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extern void logstring0(int priority, const char *cat, const char *message);
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/* logs a formated string */
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// logs a formated string
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#define printlogf(L, cat, ...) \
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{int p; if ((p = check_logcat(cat)) <= settings.log_level) \
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{printlogf0(L, p, cat, __VA_ARGS__);}}
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extern void
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printlogf0(lua_State *L,
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int priority,
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printlogf0(lua_State *L,
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int priority,
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const char *cat,
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const char *fmt,
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const char *fmt,
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...)
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__attribute__((format(printf, 4, 5)));
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/*-----------------------------------------------------------------------------
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/**
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* File-descriptor helpers
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*/
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/* Sets the non-blocking flag for a file descriptor. */
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// Sets the non-blocking flag for a file descriptor.
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extern void non_block_fd(int fd);
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/* Sets the close-on-exit flag for a file descriptor. */
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// Sets the close-on-exit flag for a file descriptor.
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extern void close_exec_fd(int fd);
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* read-ready or write-ready.
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*/
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struct observance {
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/* The file descriptor to observe. */
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// The file descriptor to observe.
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int fd;
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/* Function to call when read becomes ready. */
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// Function to call when read becomes ready.
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void (*ready)(lua_State *, struct observance *);
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/* Function to call when write becomes ready. */
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// Function to call when write becomes ready.
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void (*writey)(lua_State *, struct observance *);
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/* Function to call to clean up */
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// Function to call to clean up
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void (*tidy)(struct observance *);
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/* Extra tokens to pass to the functions- */
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// Extra tokens to pass to the functions.
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void *extra;
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};
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/* makes the core observe a file descriptor */
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// makes the core observe a file descriptor
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extern void observe_fd(
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int fd,
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void (*ready) (lua_State *, struct observance *),
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void (*writey)(lua_State *, struct observance *),
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void (*tidy) (struct observance *),
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int fd,
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void (*ready) (lua_State *, struct observance *),
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void (*writey)(lua_State *, struct observance *),
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void (*tidy) (struct observance *),
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void *extra
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);
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/* stops the core to observe a file descriptor */
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// stops the core to observe a file descriptor
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extern void nonobserve_fd(int fd);
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/*-----------------------------------------------------------------------------
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/**
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* inotify
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*/
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#ifdef LSYNCD_WITH_INOTIFY
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@ -158,7 +144,7 @@ extern void register_inotify(lua_State *L);
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extern void open_inotify(lua_State *L);
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#endif
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/*-----------------------------------------------------------------------------
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/**
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* fanotify
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*/
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#ifdef LSYNCD_WITH_FANOTIFY
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@ -166,12 +152,11 @@ extern void register_fanotify(lua_State *L);
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extern void open_fanotify(lua_State *L);
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#endif
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/*-----------------------------------------------------------------------------
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/**
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* /dev/fsevents
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*/
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#ifdef LSYNCD_WITH_FSEVENTS
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extern void open_fsevents(lua_State *L);
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#endif
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#endif
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13
lsyncd.lua
13
lsyncd.lua
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@ -1,14 +1,15 @@
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--============================================================================
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- lsyncd.lua Live (Mirror) Syncing Demon
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--
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-- License: GPLv2 (see COPYING) or any later version
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--
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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-- This is the "runner" part of Lsyncd. It containts all its high-level logic.
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-- It works closely together with the Lsyncd core in lsyncd.c. This means it
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-- cannot be runned directly from the standard lua interpreter.
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--============================================================================
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--
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-- License: GPLv2 (see COPYING) or any later version
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-- Authors: Axel Kittenberger <axkibe@gmail.com>
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--
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--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- require('profiler')
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-- profiler.start()
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