diff options
Diffstat (limited to 'tar')
| -rw-r--r-- | tar/tar2sqfs.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/tar/tar2sqfs.c b/tar/tar2sqfs.c index d0f2851..0076537 100644 --- a/tar/tar2sqfs.c +++ b/tar/tar2sqfs.c @@ -6,6 +6,7 @@ */ #include "config.h" #include "common.h" +#include "compat.h" #include "tar.h" #include <stdlib.h> @@ -213,7 +214,7 @@ static int write_file(tar_header_decoded_t *hdr, file_info_t *fi, { const sparse_map_t *it; sqfs_inode_generic_t *inode; - size_t max_blk_count; + size_t size, max_blk_count; sqfs_file_t *file; sqfs_u64 sum; int ret; @@ -222,7 +223,14 @@ static int write_file(tar_header_decoded_t *hdr, file_info_t *fi, if (filesize % cfg.block_size) ++max_blk_count; - inode = alloc_flex(sizeof(*inode), sizeof(sqfs_u32), max_blk_count); + if (SZ_MUL_OV(sizeof(sqfs_u32), max_blk_count, &size) || + SZ_ADD_OV(sizeof(*inode), size, &size)) { + fputs("creating file inode: too many blocks\n", + stderr); + return -1; + } + + inode = calloc(1, size); if (inode == NULL) { perror("creating file inode"); return -1; |