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authorMichael Vogt <michael.vogt@ubuntu.com>2010-10-13 16:03:56 +0200
committerMichael Vogt <michael.vogt@ubuntu.com>2010-10-13 16:03:56 +0200
commit44dc669e08353716da835608ea54563b4c8c32bb (patch)
tree69f40bd11de1100b4b2d452e4cbab1cb72c10458 /apt-pkg/contrib
parent61153c284c832a0d0f7faecd9ad96f6cd9591c64 (diff)
apt-pkg/contrib/fileutl.cc: fix FileFd::Size() for files that are empty or for non-gzip files
Diffstat (limited to 'apt-pkg/contrib')
-rw-r--r--apt-pkg/contrib/fileutl.cc15
1 files changed, 10 insertions, 5 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index bf07f6008..cbf1d64a9 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -916,10 +916,17 @@ unsigned long FileFd::Tell()
unsigned long FileFd::Size()
{
struct stat Buf;
- long size;
+ unsigned long size;
off_t orig_pos;
- if (gz)
+ if (fstat(iFd,&Buf) != 0)
+ return _error->Errno("fstat","Unable to determine the file size");
+ size = Buf.st_size;
+
+ // only check gzsize if we are actually a gzip file, just checking for
+ // "gz" is not sufficient as uncompressed files will be opened with
+ // gzopen in "direct" mode as well
+ if (gz && !gzdirect(gz) && size > 0)
{
/* unfortunately zlib.h doesn't provide a gzsize(), so we have to do
* this ourselves; the original (uncompressed) file size is the last 32
@@ -936,9 +943,7 @@ unsigned long FileFd::Size()
return size;
}
- if (fstat(iFd,&Buf) != 0)
- return _error->Errno("fstat","Unable to determine the file size");
- return Buf.st_size;
+ return size;
}
/*}}}*/
// FileFd::Close - Close the file if the close flag is set /*{{{*/