mirror of https://github.com/octoleo/lsyncd.git
90 lines
1.7 KiB
C
90 lines
1.7 KiB
C
/**
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* fsevents.c from Lsyncd - 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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* Interface to Linux' new filesystem monitor - fanotify.
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*/
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#include "lsyncd.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <lua.h>
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#include <lualib.h>
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#include <lauxlib.h>
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#ifdef HAVE_SYS_FANOTIFY_H
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# include <sys/fanotify.h>
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#else
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# warning sys/fanotify.h not found, using own syscalls as workaround.
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# include "fanotify-syscall.h"
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#endif
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/**
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* The fanotify file descriptor.
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*/
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static int fanotify_fd = -1;
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/**
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* Cores fanotify functions.
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*/
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static const luaL_reg lfanotifylib[] = {
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{NULL, NULL}
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};
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/**
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* registers fanoitfy functions.
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*/
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extern void
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register_fanotify(lua_State *L) {
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lua_pushstring(L, "fanotify");
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luaL_register(L, "fanotify", lfanotifylib);
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}
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/**
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* Called by function pointer from when the inotify file descriptor
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* became ready. Reads it contents and forward all received events
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* to the runner.
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*/
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static void
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fanotify_ready(lua_State *L, struct observance *ob)
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{
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// TODO
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}
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/**
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* closes fanoitfy
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*/
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extern void
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fanotify_tidy(struct observance *ob) {
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if (ob->fd != fanotify_fd) {
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logstring("Error", "Internal, fanotify_fd != ob->fd");
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exit(-1); // ERRNO
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}
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close(fanotify_fd);
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}
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/**
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* opens and initalizes fanotify.
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*/
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extern void
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open_fanotify(lua_State *L) {
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fanotify_fd = fanotify_init(O_CLOEXEC | O_NONBLOCK, O_RDONLY);
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if (fanotify_fd < 0) {
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printlogf(L, "Error",
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"Cannot access fanotify monitor! (%d:%s)",
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errno, strerror(errno));
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exit(-1); // ERRNO
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}
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observe_fd(fanotify_fd, fanotify_ready, NULL, fanotify_tidy, NULL);
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}
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