X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fintegrity.c;h=bbabaea289a2680180f227284c4b867ae9af3323;hp=837a1d8dbbdc1a117ddc32848f1409c651656b56;hb=74e7df247bf7dff00adce6a32be61560bf3a374c;hpb=fea0ee9f10fbcb85ff56ca06510e96186a7611ae diff --git a/src/integrity.c b/src/integrity.c index 837a1d8d..bbabaea2 100644 --- a/src/integrity.c +++ b/src/integrity.c @@ -3,11 +3,11 @@ * * WIM files can optionally contain a table of SHA1 message digests at the end, * one digest for each chunk of the file of some specified size (often 10 MB). - * This file implements the checking and writing this table. + * This file implements the checking and writing of this table. */ /* - * Copyright (C) 2012 Eric Biggers + * Copyright (C) 2012, 2013 Eric Biggers * * This file is part of wimlib, a library for working with WIM files. * @@ -45,8 +45,9 @@ struct integrity_table { u8 sha1sums[0][20]; }; -static int calculate_chunk_sha1(FILE *fp, size_t this_chunk_size, - off_t offset, u8 sha1_md[]) +static int +calculate_chunk_sha1(FILE *fp, size_t this_chunk_size, + off_t offset, u8 sha1_md[]) { int ret; u8 buf[BUFFER_SIZE]; @@ -86,7 +87,7 @@ static int calculate_chunk_sha1(FILE *fp, size_t this_chunk_size, /* - * Reads the integrity table from a WIM file. + * read_integrity_table: - Reads the integrity table from a WIM file. * * @res_entry: * The resource entry that specifies the location of the integrity table. @@ -109,10 +110,11 @@ static int calculate_chunk_sha1(FILE *fp, size_t this_chunk_size, * data. * * WIMLIB_ERR_READ: Could not read the integrity data from the WIM file. */ -static int read_integrity_table(const struct resource_entry *res_entry, - FILE *fp, - u64 num_checked_bytes, - struct integrity_table **table_ret) +static int +read_integrity_table(const struct resource_entry *res_entry, + FILE *fp, + u64 num_checked_bytes, + struct integrity_table **table_ret) { struct integrity_table *table = NULL; int ret = 0; @@ -199,6 +201,8 @@ out: } /* + * calculate_integrity_table(): + * * Calculates an integrity table for the data in a file beginning at offset 208 * (WIM_HEADER_DISK_SIZE). * @@ -210,7 +214,7 @@ out: * Offset of byte after the last byte to be checked. * * @old_table: - * If non-NULL, a pointer to the table containing previously contained + * If non-NULL, a pointer to the table containing the previously calculated * integrity data for a prefix of this file. * * @old_check_end: @@ -227,12 +231,13 @@ out: * * Returns 0 on success; nonzero on failure. */ -static int calculate_integrity_table(FILE *fp, - off_t new_check_end, - const struct integrity_table *old_table, - off_t old_check_end, - wimlib_progress_func_t progress_func, - struct integrity_table **integrity_table_ret) +static int +calculate_integrity_table(FILE *fp, + off_t new_check_end, + const struct integrity_table *old_table, + off_t old_check_end, + wimlib_progress_func_t progress_func, + struct integrity_table **integrity_table_ret) { int ret = 0; size_t chunk_size = INTEGRITY_CHUNK_SIZE; @@ -317,6 +322,8 @@ static int calculate_integrity_table(FILE *fp, } /* + * write_integrity_table(): + * * Writes a WIM integrity table (a list of SHA1 message digests of raw 10 MiB * chunks of the file). * @@ -356,11 +363,12 @@ static int calculate_integrity_table(FILE *fp, * * WIMLIB_ERR_READ: Could not read a chunk of data that needed * to be checked. */ -int write_integrity_table(FILE *fp, - struct resource_entry *integrity_res_entry, - off_t new_lookup_table_end, - off_t old_lookup_table_end, - wimlib_progress_func_t progress_func) +int +write_integrity_table(FILE *fp, + struct resource_entry *integrity_res_entry, + off_t new_lookup_table_end, + off_t old_lookup_table_end, + wimlib_progress_func_t progress_func) { struct integrity_table *old_table; struct integrity_table *new_table; @@ -426,6 +434,8 @@ out_free_old_table: } /* + * verify_integrity(): + * * Checks a WIM for consistency with the integrity table. * * @fp: @@ -448,10 +458,11 @@ out_free_old_table: * were no inconsistencies. * -1 (WIM_INTEGRITY_NOT_OK) if the WIM failed the integrity check. */ -static int verify_integrity(FILE *fp, const char *filename, - const struct integrity_table *table, - u64 bytes_to_check, - wimlib_progress_func_t progress_func) +static int +verify_integrity(FILE *fp, const tchar *filename, + const struct integrity_table *table, + u64 bytes_to_check, + wimlib_progress_func_t progress_func) { int ret; u64 offset = WIM_HEADER_DISK_SIZE; @@ -496,6 +507,8 @@ static int verify_integrity(FILE *fp, const char *filename, /* + * check_wim_integrity(): + * * Verifies the integrity of the WIM by making sure the SHA1 message digests of * ~10 MiB chunks of the WIM match up with the values given in the integrity * table. @@ -515,7 +528,8 @@ static int verify_integrity(FILE *fp, const char *filename, * -2 (WIM_INTEGRITY_NONEXISTENT) if the WIM contains no integrity * information. */ -int check_wim_integrity(WIMStruct *w, wimlib_progress_func_t progress_func) +int +check_wim_integrity(WIMStruct *w, wimlib_progress_func_t progress_func) { int ret; u64 bytes_to_check;