diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makemodule.am | 2 | ||||
| -rw-r--r-- | lib/sqfs/statistics.c | 73 |
2 files changed, 74 insertions, 1 deletions
diff --git a/lib/Makemodule.am b/lib/Makemodule.am index 5f0cdae..8258136 100644 --- a/lib/Makemodule.am +++ b/lib/Makemodule.am @@ -37,7 +37,7 @@ libsquashfs_a_SOURCES += lib/sqfs/data_writer.c lib/sqfs/write_xattr.c libsquashfs_a_SOURCES += include/data_writer.h libsquashfs_a_SOURCES += include/data_reader.h lib/sqfs/data_reader.c libsquashfs_a_SOURCES += lib/sqfs/write_export_table.c -libsquashfs_a_SOURCES += lib/sqfs/read_table.c +libsquashfs_a_SOURCES += lib/sqfs/read_table.c lib/sqfs/statistics.c libutil_a_SOURCES = lib/util/canonicalize_name.c lib/util/write_data.c libutil_a_SOURCES += lib/util/read_data.c include/util.h diff --git a/lib/sqfs/statistics.c b/lib/sqfs/statistics.c new file mode 100644 index 0000000..2bd4acf --- /dev/null +++ b/lib/sqfs/statistics.c @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +#include "config.h" +#include "highlevel.h" + +#include <stdio.h> + +void sqfs_print_statistics(fstree_t *fs, sqfs_super_t *super) +{ + size_t blocks_written = 0, duplicate_blocks = 0, sparse_blocks = 0; + size_t ratio, file_count = 0, file_dup_count = 0; + size_t frag_count = 0, frag_dup = 0; + size_t i, num_blocks, sparse; + uint64_t output_bytes = 0; + uint64_t input_bytes = 0; + file_info_t *fi; + + for (fi = fs->files; fi != NULL; fi = fi->next) { + num_blocks = fi->size / fs->block_size; + + if ((fi->size % fs->block_size) && + !(fi->flags & FILE_FLAG_HAS_FRAGMENT)) { + ++num_blocks; + } + + for (sparse = 0, i = 0; i < num_blocks; ++i) { + if (fi->blocks[i].size == 0) + sparse += 1; + } + + if (fi->flags & FILE_FLAG_BLOCKS_ARE_DUPLICATE) { + duplicate_blocks += num_blocks - sparse; + } else { + blocks_written += num_blocks - sparse; + } + + if ((fi->flags & FILE_FLAG_FRAGMENT_IS_DUPLICATE) && + (fi->flags & FILE_FLAG_BLOCKS_ARE_DUPLICATE)) { + file_dup_count += 1; + } + + if (fi->flags & FILE_FLAG_HAS_FRAGMENT) { + if (fi->flags & FILE_FLAG_FRAGMENT_IS_DUPLICATE) { + frag_dup += 1; + } else { + frag_count += 1; + } + } + + sparse_blocks += sparse; + file_count += 1; + input_bytes += fi->size; + } + + if (input_bytes > 0) { + output_bytes = super->inode_table_start - sizeof(*super); + ratio = (100 * output_bytes) / input_bytes; + } else { + ratio = 100; + } + + fputs("---------------------------------------------------\n", stdout); + printf("Input files processed: %zu\n", file_count); + printf("Files that were complete duplicates: %zu\n", file_dup_count); + printf("Data blocks actually written: %zu\n", blocks_written); + printf("Fragment blocks written: %u\n", super->fragment_entry_count); + printf("Duplicate data blocks omitted: %zu\n", duplicate_blocks); + printf("Sparse blocks omitted: %zu\n", sparse_blocks); + printf("Fragments actually written: %zu\n", frag_count); + printf("Duplicated fragments omitted: %zu\n", frag_dup); + printf("Total number of inodes: %u\n", super->inode_count); + printf("Number of unique group/user IDs: %u\n", super->id_count); + printf("Data compression ratio: %zu%%\n", ratio); +} |