int uv_fs_event_init(uv_loop_t* loop,
uv_fs_event_t* handle,
const char* filename,
uv_fs_event_cb cb,
int flags) {
int fd;
loop->counters.fs_event_init++;
/* We don't support any flags yet. */
assert(!flags);
if (cb == NULL) {
uv__set_sys_error(loop, EINVAL);
return -1;
}
/* TODO open asynchronously - but how do we report back errors? */
if ((fd = open(filename, O_RDONLY)) == -1) {
uv__set_sys_error(loop, errno);
return -1;
}
uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT);
handle->filename = strdup(filename);
handle->fflags = 0;
handle->cb = cb;
handle->fd = fd;
uv__fs_event_start(handle);
return 0;
}
int uv_fs_event_init(uv_loop_t* loop,
uv_fs_event_t* handle,
const char* filename,
uv_fs_event_cb cb,
int flags) {
int fd;
#if defined(__APPLE__)
struct stat statbuf;
#endif /* defined(__APPLE__) */
/* We don't support any flags yet. */
assert(!flags);
/* TODO open asynchronously - but how do we report back errors? */
if ((fd = open(filename, O_RDONLY)) == -1) {
uv__set_sys_error(loop, errno);
return -1;
}
uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT);
uv__handle_start(handle); /* FIXME shouldn't start automatically */
handle->filename = strdup(filename);
handle->fflags = 0;
handle->cb = cb;
handle->fd = fd;
#if defined(__APPLE__)
/* Nullify field to perform checks later */
handle->cf_eventstream = NULL;
if (fstat(fd, &statbuf))
goto fallback;
/* FSEvents works only with directories */
if (!(statbuf.st_mode & S_IFDIR))
goto fallback;
return uv__fsevents_init(handle);
fallback:
#endif /* defined(__APPLE__) */
uv__fs_event_start(handle);
return 0;
}
static void uv__fs_event(EV_P_ ev_io* w, int revents) {
uv_fs_event_t* handle;
int events;
assert(revents == EV_LIBUV_KQUEUE_HACK);
handle = container_of(w, uv_fs_event_t, event_watcher);
if (handle->fflags & (NOTE_ATTRIB | NOTE_EXTEND))
events = UV_CHANGE;
else
events = UV_RENAME;
handle->cb(handle, NULL, events, 0);
uv__fs_event_stop(handle);
/* File watcher operates in one-shot mode, re-arm it. */
if (handle->fd != -1)
uv__fs_event_start(handle);
}