From 267d5318e1cbf69a071b5188dda50310af2f2f8b Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Mon, 7 Oct 2019 14:44:17 +0200 Subject: Cleanup: Move padd_file function to libtar It's only ever used for padding tarballs. Signed-off-by: David Oberhollenzer --- lib/tar/padd_file.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 lib/tar/padd_file.c (limited to 'lib/tar/padd_file.c') diff --git a/lib/tar/padd_file.c b/lib/tar/padd_file.c new file mode 100644 index 0000000..471370d --- /dev/null +++ b/lib/tar/padd_file.c @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * padd_file.c + * + * Copyright (C) 2019 David Oberhollenzer + */ +#include "config.h" +#include "tar.h" + +#include +#include + +int padd_file(int outfd, sqfs_u64 size) +{ + size_t padd_sz = size % TAR_RECORD_SIZE; + int status = -1; + sqfs_u8 *buffer; + + if (padd_sz == 0) + return 0; + + padd_sz = TAR_RECORD_SIZE - padd_sz; + + buffer = calloc(1, padd_sz); + if (buffer == NULL) + goto fail_errno; + + if (write_data("padding output file to block size", + outfd, buffer, padd_sz)) { + goto out; + } + + status = 0; +out: + free(buffer); + return status; +fail_errno: + perror("padding output file to block size"); + goto out; +} -- cgit v1.2.3