On Tue, Nov 01, 2016 at 04:01:44PM +0800, Qu Wenruo wrote:
> +/*
> + * Underlying PRINT_DUMP, the only difference is how we handle
> + * the full path.
> + */
> +static int __print_dump(int subvol, void *user, const char *path,
> + const char *title, const char *fmt, ...)
printf-like the __attribute__ ((format (printf, ...)))
> +{
> + struct btrfs_dump_send_args *r = user;
> + char real_title[TITLE_WIDTH + 1] = { 0 };
> + char full_path[PATH_MAX] = {0};
> + char *out_path;
> + va_list args;
> + int ret;
> +
> + if (subvol) {
> + PATH_CAT_OR_RET(title, r->full_subvol_path, r->root_path, path,
> ret);
> + out_path = r->full_subvol_path;
> + } else {
> + PATH_CAT_OR_RET(title, full_path, r->full_subvol_path, path,
> ret);
> + out_path = full_path;
> + }
> + string_escape_inplace(out_path, " \n\t\\");
> +
> + /* Append ':' to title */
> + strncpy(real_title, title, TITLE_WIDTH - 1);
> + strncat(real_title, ":", TITLE_WIDTH);
I'd rather avoid such string operations, ':', just print everything.
> +
> + /* Unified header, */
> + printf("%-*s%-*s", TITLE_WIDTH, real_title, PATH_WIDTH, out_path);
PATH_WIDTH is used only here, please hardcode it into the format string.
The rest of the patch looks good. I think I've seen some artifacts in
the output, but we can tune this later.
> + ret = strftime(dest, max_size, "%Y-%m-%d %H:%M:%S", tm);
We should use the RFC 3339 format, as it's standardized and also is a
string without whitespace.
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