From 4dc7b4a76ee7344c2c7743ab8dd070b85bf6935a Mon Sep 17 00:00:00 2001 From: Michael Vogt Date: Fri, 10 Sep 2010 13:56:40 +0200 Subject: apt-pkg/contrib/cdromutl.cc: do not take Buf.f_bfree into account on writable media --- apt-pkg/contrib/cdromutl.cc | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/apt-pkg/contrib/cdromutl.cc b/apt-pkg/contrib/cdromutl.cc index 9c00f94b5..68b980407 100644 --- a/apt-pkg/contrib/cdromutl.cc +++ b/apt-pkg/contrib/cdromutl.cc @@ -156,11 +156,14 @@ bool MountCdrom(string Path, string DeviceName) bool IdentCdrom(string CD,string &Res,unsigned int Version) { MD5Summation Hash; + bool writable_media = false; // if we are on a writable medium (like a usb-stick) that is just // used like a cdrom don't use "." as it will constantly change, // use .disk instead - if (access(CD.c_str(), W_OK) == 0 && DirectoryExists(CD+string("/.disk"))) { + if (access(CD.c_str(), W_OK) == 0 && DirectoryExists(CD+string("/.disk"))) + { + writable_media = true; CD = CD.append("/.disk"); if (_config->FindB("Debug::aptcdrom",false) == true) std::clog << "Found writable cdrom, using alternative path: " << CD @@ -212,10 +215,15 @@ bool IdentCdrom(string CD,string &Res,unsigned int Version) struct statvfs Buf; if (statvfs(CD.c_str(),&Buf) != 0) return _error->Errno("statfs",_("Failed to stat the cdrom")); - + // We use a kilobyte block size to advoid overflow - sprintf(S,"%lu %lu",(long)(Buf.f_blocks*(Buf.f_bsize/1024)), - (long)(Buf.f_bfree*(Buf.f_bsize/1024))); + if (writable_media) + { + sprintf(S,"%lu",(long)(Buf.f_blocks*(Buf.f_bsize/1024))); + } else { + sprintf(S,"%lu %lu",(long)(Buf.f_blocks*(Buf.f_bsize/1024)), + (long)(Buf.f_bfree*(Buf.f_bsize/1024))); + } Hash.Add(S); sprintf(S,"-%u",Version); } -- cgit v1.2.3