diff options
Diffstat (limited to 'bfd/bfdio.c')
| -rw-r--r-- | bfd/bfdio.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/bfd/bfdio.c b/bfd/bfdio.c index fd81b93..49e0958 100644 --- a/bfd/bfdio.c +++ b/bfd/bfdio.c @@ -415,17 +415,32 @@ DESCRIPTION of space for the 15 bazillon byte table it is about to read. This function at least allows us to answer the question, "is the size reasonable?". + + A return value of zero indicates the file size is unknown. */ ufile_ptr bfd_get_size (bfd *abfd) { - struct stat buf; + /* A size of 0 means we haven't yet called bfd_stat. A size of 1 + means we have a cached value of 0, ie. unknown. */ + if (abfd->size <= 1 || bfd_write_p (abfd)) + { + struct stat buf; - if (bfd_stat (abfd, &buf) != 0) - return 0; + if (abfd->size == 1 && !bfd_write_p (abfd)) + return 0; - return buf.st_size; + if (bfd_stat (abfd, &buf) != 0 + || buf.st_size == 0 + || buf.st_size - (ufile_ptr) buf.st_size != 0) + { + abfd->size = 1; + return 0; + } + abfd->size = buf.st_size; + } + return abfd->size; } /* |