Date: Wed, 9 Sep 2009 20:59:01 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/compat/freebsd32 freebsd32_misc.c src/sys/compat/linux linux_misc.c src/sys/kern sys_generic.c src/sys/sys syscallsubr.h Message-ID: <200909092059.n89KxGpa012441@repoman.freebsd.org>
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kib 2009-09-09 20:59:01 UTC
FreeBSD src repository
Modified files:
sys/compat/freebsd32 freebsd32_misc.c
sys/compat/linux linux_misc.c
sys/kern sys_generic.c
sys/sys syscallsubr.h
Log:
SVN rev 197049 on 2009-09-09 20:59:01Z by kib
kern_select(9) copies fd_set in and out of userspace in quantities of
longs. Since 32bit processes longs are 4 bytes, 64bit kernel may copy in
or out 4 bytes more then the process expected.
Calculate the amount of bytes to copy taking into account size of fd_set
for the current process ABI.
Diagnosed and tested by: Peter Jeremy <peterjeremy acm org>
Reviewed by: jhb
MFC after: 1 week
Revision Changes Path
1.94 +2 -1 src/sys/compat/freebsd32/freebsd32_misc.c
1.241 +1 -1 src/sys/compat/linux/linux_misc.c
1.177 +9 -5 src/sys/kern/sys_generic.c
1.58 +1 -1 src/sys/sys/syscallsubr.h
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