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Full Discussion: Clamd max file size Solaris 10
Operating Systems Solaris Clamd max file size Solaris 10 Post 303012521 by achenle on Monday 5th of February 2018 12:18:07 PM
Old 02-05-2018
Based on this post, I did some poking in the clamav source code.

I'm not impressed.

There are way too many instances of 64-to-32 bit truncations in the code - for example, read() is assumed to return int and not the correct ssize_t.

Running Solaris Studio 12.4 lint on just the C files in source tree's libclamav directory:

Code:
bash 4.1$ lint -errchk=%all -errhdr=%user -m64 -I.. -I../clamd -I../libclamav -I../win32 a*.c [c-z]*.c 2>&1 | grep "assignment of 64-bit integer" | wc -l
    398

The blob.c file causes lint to fail with an error, so I used a*.c [c-z]*.c to quickly exclude *.c files that start with b.

And there are 398 instances in just libclamav/*.c where a 64-bit value is truncated. There are also a lot of other problems, too.

It's no surprise at all that clamav has problems with files larger than 2 GB.

And that's just from using lint on the C files. I'd bet the results of compiling the C++ portions with Solaris Studio's C++ compiler and the "-m64 -xport64" command-line options are downright scary.
Last edited by achenle; 02-05-2018 at 01:25 PM..
 

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LEARN ABOUT MINIX

lint

lint(1B)					     SunOS/BSD Compatibility Package Commands						  lint(1B)

NAME

       lint - C program verifier

SYNOPSIS

       /usr/ucb/lint [options]

DESCRIPTION

       /usr/ucb/lint  is  the  interface  to  the  BSD	Compatibility  Package	C  program  verifier.	It  is	a  script  that looks for the link
       /usr/ccs/bin/ucblint to the C program verifier. /usr/ccs/bin/ucblint is available only with the SPROcc package, whose default  location	is
       /opt/SUNWspro.  /usr/ucb/lint  is  identical to /usr/ccs/bin/ucblint, except that BSD headers are used and BSD  libraries are linked before
       base libraries.	The /opt/SUNWspro/man/man1/lint.1 man page is available only with the SPROcc package.

OPTIONS

       /usr/ucb/lint accepts the same options as /usr/ccs/bin/ucblint, with the following exceptions:

       -Idir	       Search dir for included files whose names do not begin with a slash (/) prior  to  searching  the  usual  directories.  The
		       directories for multiple -I options are searched in the order specified. The preprocessor first searches for #include files
		       in the directory containing sourcefile, and then in directories named with -I options (if any), then  /usr/ucbinclude,  and
		       finally, in /usr/include.

       -Ldir	       Add  dir  to  the  list	of  directories  searched  for	libraries  by  /usr/ccs/bin/ucblint.  This  option  is	passed	to
		       /usr/ccs/bin/ld. Directories specified with this option are searched before /usr/ucblib and /usr/lib.

       -Y P, dir       Change the default directory used for finding libraries.

EXIT STATUS

       The following exit values are returned:

       0	       Successful completion.

       >0	       An error occurred.

FILES

       /usr/lint/bin/ld        link editor

       /usr/lib/libc	       C library

       /usr/ucbinclude	       BSD Compatibility directory for header files

       /usr/ucblib	       BSD Compatibility directory for libraries

       /usr/ucblib/libucb      BSD Compatibility C library

       /usr/lib/libsocket      library containing socket routines

       /usr/lib/libnsl	       library containing network functions

       /usr/lib/libelf	       library containing routines to process ELF object files

       /usr/lib/libaio	       library containing asynchronous I/O routines

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ld(1), a.out(4), attributes(5)

SunOS 5.10							    1 Feb 1995								  lint(1B)
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