Package: djvulibre
Severity: important
Hello,
I noticed that when I open in djview a file hosted on ntfs I always get a
segfault. The reason of it is not checking for the result of mmap() in
MemoryMapByteStream::init(). There are filesystems in linux that do not
support memory mapping (ntfs in linux 2.4.27). The patch that solves this
problem is attached. Please forward the patch/description to the upstream.
-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.4.27-minimal
Locale: LANG=ru_RU.KOI8-R, LC_CTYPE=ru_RU.KOI8-R (charmap=KOI8-R)
--
Stanislav
--- a/libdjvu/ByteStream.cpp 2006-04-25 16:49:40.000000000 +0400
+++ b/libdjvu/ByteStream.cpp 2006-04-25 16:39:38.000000000 +0400
@@ -1255,9 +1255,12 @@
{
bsize=statbuf.st_size;
data=(char *)mmap(0,statbuf.st_size,PROT_READ,MAP_SHARED,fd,0);
+ if(data == (char *)(-1))
+ goto mmap_error;
}
}else
{
+mmap_error:
if(closeme)
{
close(fd);
