static ngx_int_t
ngx_open_and_stat_file(ngx_str_t *name, ngx_open_file_info_t *of,
ngx_log_t *log)
{
ngx_fd_t fd;
ngx_file_info_t fi;
if (of->fd != NGX_INVALID_FILE) {
if (ngx_file_info_wrapper(name, of, &fi, log) == NGX_FILE_ERROR) {
of->fd = NGX_INVALID_FILE;
return NGX_ERROR;
}
// 判断文件是否被改变
if (of->uniq == ngx_file_uniq(&fi)) {
goto done;
}
} else if (of->test_dir) {
if (ngx_file_info_wrapper(name, of, &fi, log) == NGX_FILE_ERROR) {
of->fd = NGX_INVALID_FILE;
return NGX_ERROR;
}
if (ngx_is_dir(&fi)) {
goto done;
}
}
// 否则重新打开
if (!of->log) {
/*
* Use non-blocking open() not to hang on FIFO files, etc.
* This flag has no effect on a regular files.
*/
fd = ngx_open_file_wrapper(name, of, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK,
NGX_FILE_OPEN, 0, log);
} else {
fd = ngx_open_file_wrapper(name, of, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS, log);
}
if (fd == NGX_INVALID_FILE) {
of->fd = NGX_INVALID_FILE;
return NGX_ERROR;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
ngx_fd_info_n " \"%V\" failed", name);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%V\" failed", name);
}
of->fd = NGX_INVALID_FILE;
return NGX_ERROR;
}
if (ngx_is_dir(&fi)) {
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%V\" failed", name);
}
of->fd = NGX_INVALID_FILE;
} else {
of->fd = fd;
if (of->read_ahead && ngx_file_size(&fi) > NGX_MIN_READ_AHEAD) {
if (ngx_read_ahead(fd, of->read_ahead) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_read_ahead_n " \"%V\" failed", name);
}
}
if (of->directio <= ngx_file_size(&fi)) {
if (ngx_directio_on(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_directio_on_n " \"%V\" failed", name);
} else {
of->is_directio = 1;
}
}
}
done:
of->uniq = ngx_file_uniq(&fi);
of->mtime = ngx_file_mtime(&fi);
of->size = ngx_file_size(&fi);
of->fs_size = ngx_file_fs_size(&fi);
of->is_dir = ngx_is_dir(&fi);
of->is_file = ngx_is_file(&fi);
of->is_link = ngx_is_link(&fi);
of->is_exec = ngx_is_exec(&fi);
return NGX_OK;
}
static ngx_int_t
ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of, ngx_log_t *log)
{
int mode;
ngx_fd_t fd;
ngx_file_info_t fi;
if (of->fd != NGX_INVALID_FILE) {
if (ngx_file_info(name, &fi) == NGX_FILE_ERROR) {
of->failed = ngx_file_info_n;
goto failed;
}
if (of->uniq == ngx_file_uniq(&fi)) {
goto done;
}
} else if (of->test_dir) {
if (ngx_file_info(name, &fi) == NGX_FILE_ERROR) {
of->failed = ngx_file_info_n;
goto failed;
}
if (ngx_is_dir(&fi)) {
goto done;
}
}
if (!of->log) {
/*
* Use non-blocking open() not to hang on FIFO files, etc.
* This flag has no effect on a regular files.
*/
mode = NGX_FILE_RDONLY|NGX_FILE_NONBLOCK;
#if (NGX_WIN32 && NGX_HAVE_FILE_AIO)
if (ngx_event_flags & NGX_USE_IOCP_EVENT && of->aio) {
mode |= NGX_FILE_OVERLAPPED;
}
#endif
fd = ngx_open_file(name, mode, NGX_FILE_OPEN, 0);
} else {
fd = ngx_open_file(name, NGX_FILE_APPEND, NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
}
if (fd == NGX_INVALID_FILE) {
of->failed = ngx_open_file_n;
goto failed;
}
if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
ngx_fd_info_n " \"%s\" failed", name);
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name);
}
of->fd = NGX_INVALID_FILE;
return NGX_ERROR;
}
if (ngx_is_dir(&fi)) {
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name);
}
of->fd = NGX_INVALID_FILE;
} else {
of->fd = fd;
if (of->read_ahead && ngx_file_size(&fi) > NGX_MIN_READ_AHEAD) {
if (ngx_read_ahead(fd, of->read_ahead) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_read_ahead_n " \"%s\" failed", name);
}
}
if (of->directio <= ngx_file_size(&fi)) {
if (ngx_directio_on(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
ngx_directio_on_n " \"%s\" failed", name);
} else {
of->is_directio = 1;
}
}
}
done:
of->uniq = ngx_file_uniq(&fi);
of->mtime = ngx_file_mtime(&fi);
of->size = ngx_file_size(&fi);
of->fs_size = ngx_file_fs_size(&fi);
of->is_dir = ngx_is_dir(&fi);
of->is_file = ngx_is_file(&fi);
of->is_link = ngx_is_link(&fi);
of->is_exec = ngx_is_exec(&fi);
return NGX_OK;
failed:
of->fd = NGX_INVALID_FILE;
of->err = ngx_errno;
return NGX_ERROR;
}
