X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fintegrity.c;h=8e1df18911f9d1d641e675cc95d2058f2fad17cd;hp=1eeb671aa178e93c1eb1ea44a819bc2500e9d53f;hb=60523d25f34692d6f3a7c8bbda88eead17f23b12;hpb=61db93f82eca3fe9f7676355c709c58cc425a6ad diff --git a/src/integrity.c b/src/integrity.c index 1eeb671a..8e1df189 100644 --- a/src/integrity.c +++ b/src/integrity.c @@ -37,6 +37,7 @@ #include "wimlib/resource.h" #include "wimlib/sha1.h" #include "wimlib/wim.h" +#include "wimlib/write.h" /* Size, in bytes, of each SHA1-summed chunk, when wimlib writes integrity * information. */ @@ -87,9 +88,8 @@ calculate_chunk_sha1(struct filedes *in_fd, size_t this_chunk_size, * read_integrity_table: - Reads the integrity table from a WIM file. * * @wim: - * WIMStruct for the WIM file; @wim->hdr.integrity specifies the location - * of the integrity table. The integrity table must exist (i.e. - * res_entry->offset must not be 0). @wim->in_fd is expected to be a + * WIMStruct for the WIM file; @wim->hdr.integrity_table_reshdr specifies + * the location of the integrity table. @wim->in_fd is expected to be a * seekable file descriptor to the WIM file opened for reading. * * @num_checked_bytes: @@ -110,19 +110,19 @@ static int read_integrity_table(WIMStruct *wim, u64 num_checked_bytes, struct integrity_table **table_ret) { + void *buf; struct integrity_table *table; int ret; - if (wim->hdr.integrity.size < 8) + if (wim->hdr.integrity_table_reshdr.uncompressed_size < 8) goto invalid; - DEBUG("Reading integrity table (offset %"PRIu64", " - "original_size %"PRIu64")", - wim->hdr.integrity.offset, wim->hdr.integrity.original_size); + DEBUG("Reading integrity table."); - ret = res_entry_to_data(&wim->hdr.integrity, wim, (void**)&table); + ret = wim_reshdr_to_data(&wim->hdr.integrity_table_reshdr, wim, &buf); if (ret) return ret; + table = buf; table->size = le32_to_cpu(table->size); table->num_entries = le32_to_cpu(table->num_entries); @@ -132,7 +132,7 @@ read_integrity_table(WIMStruct *wim, u64 num_checked_bytes, "table->chunk_size = %u", table->size, table->num_entries, table->chunk_size); - if (table->size != wim->hdr.integrity.original_size || + if (table->size != wim->hdr.integrity_table_reshdr.uncompressed_size || table->size != (u64)table->num_entries * SHA1_HASH_SIZE + 12 || table->chunk_size == 0 || table->num_entries != DIV_ROUND_UP(num_checked_bytes, table->chunk_size)) @@ -280,8 +280,8 @@ calculate_integrity_table(struct filedes *in_fd, * chunks of the file). * * This function can optionally re-use entries from an older integrity table. - * To do this, make @integrity_res_entry point to the resource entry for the - * older table (note: this is an input-output parameter), and set + * To do this, ensure that @wim->hdr.integrity_table_reshdr is the resource + * header for the older table (note: this is an input-output parameter), and set * @old_lookup_table_end to the offset of the byte directly following the last * byte checked by the old table. If the old integrity table is invalid or * cannot be read, a warning is printed and the integrity information is @@ -311,9 +311,7 @@ calculate_integrity_table(struct filedes *in_fd, * * Return values: * WIMLIB_ERR_SUCCESS (0) - * WIMLIB_ERR_INVALID_INTEGRITY_TABLE * WIMLIB_ERR_NOMEM - * WIMLIB_ERR_READ * WIMLIB_ERR_UNEXPECTED_END_OF_FILE * WIMLIB_ERR_WRITE */ @@ -326,16 +324,16 @@ write_integrity_table(WIMStruct *wim, struct integrity_table *old_table; struct integrity_table *new_table; int ret; - off_t cur_offset; u32 new_table_size; - wimlib_assert(old_lookup_table_end <= new_lookup_table_end); + DEBUG("Writing integrity table " + "(new_lookup_table_end=%"PRIu64", old_lookup_table_end=%"PRIu64")", + new_lookup_table_end, old_lookup_table_end); - cur_offset = wim->out_fd.offset; + wimlib_assert(old_lookup_table_end <= new_lookup_table_end); - if (wim->hdr.integrity.offset == 0 || old_lookup_table_end == 0) { - old_table = NULL; - } else { + old_table = NULL; + if (wim_has_integrity_table(wim) && old_lookup_table_end != 0) { ret = read_integrity_table(wim, old_lookup_table_end - WIM_HEADER_DISK_SIZE, &old_table); @@ -365,12 +363,15 @@ write_integrity_table(WIMStruct *wim, 0, &wim->out_fd, WIMLIB_COMPRESSION_TYPE_NONE, - &wim->hdr.integrity, + 0, + &wim->hdr.integrity_table_reshdr, NULL, - 0); + 0, + &wim->lzx_context); FREE(new_table); out_free_old_table: FREE(old_table); + DEBUG("ret=%d", ret); return ret; } @@ -478,13 +479,13 @@ check_wim_integrity(WIMStruct *wim, wimlib_progress_func_t progress_func) struct integrity_table *table; u64 end_lookup_table_offset; - if (wim->hdr.integrity.offset == 0) { + if (!wim_has_integrity_table(wim)) { DEBUG("No integrity information."); return WIM_INTEGRITY_NONEXISTENT; } - end_lookup_table_offset = wim->hdr.lookup_table_res_entry.offset + - wim->hdr.lookup_table_res_entry.size; + end_lookup_table_offset = wim->hdr.lookup_table_reshdr.offset_in_wim + + wim->hdr.lookup_table_reshdr.size_in_wim; if (end_lookup_table_offset < WIM_HEADER_DISK_SIZE) { ERROR("WIM lookup table ends before WIM header ends!");