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Peter Maydell 0c1592d935 linux-user: Fix large seeks by 32 bit guest on 64 bit host 
When emulating a 32 bit Linux user-mode program on a 64 bit target
we implement the llseek syscall in terms of lseek. Correct a bug
which meant we were silently casting the result of host lseek()
to a 32 bit integer as it passed through get_errno() and thus
throwing away the top half.

We also don't try to store the result back to userspace unless
the seek succeeded; this matches the kernel behaviour.

Thanks to Eoghan Sherry for identifying the problem and suggesting
a solution.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-06 19:06:27 +01:00
..
alpha alpha-linux-user: Implement signals. 2010-02-28 17:54:52 +01:00
arm linux-user/arm: fix compilation failures using softfloat's struct types 2011-02-10 20:18:36 +01:00
cris Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
i386 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
m68k Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
microblaze Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
mips linux-user: fix mips and ppc to use UID16 2010-12-03 15:10:08 +02:00
mips64 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
mipsn32 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
ppc linux-user: fix mips and ppc to use UID16 2010-12-03 15:10:08 +02:00
sh4 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
sparc Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
sparc64 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
x86_64 Revert "Get rid of _t suffix" 2009-10-01 16:12:16 -05:00
cpu-uname.c linux-user: adapt uname machine to emulated CPU 2010-02-06 17:19:43 +01:00
cpu-uname.h linux-user: adapt uname machine to emulated CPU 2010-02-06 17:19:43 +01:00
elfload.c linux-user: correct core dump format 2011-02-17 11:46:34 +02:00
errno_defs.h Remove unnecessary trailing newlines 2008-12-13 09:32:43 +00:00
flat.h Support for 32 bit ABI on 64 bit targets (only enabled Sparc64) 2007-10-14 16:27:31 +00:00
flatload.c linux-user/FLAT: allow targets to override FLAT processing 2011-02-09 10:33:54 +02:00
ioctls.h linux-user: fix for loopmount ioctl 2011-02-09 10:33:54 +02:00
linux_loop.h Fix build failure with old kernel headers (loop.h is incompatible with 2008-05-23 16:06:43 +00:00
linuxload.c Remove dead code for ARM semihosting commandline handling 2011-01-07 18:20:57 +02:00
m68k-sim.c linux-user: Fix typo m86k -> m68k 2010-10-05 13:53:56 -05:00
main.c linux-user: Add support for -version option 2011-02-09 10:33:53 +02:00
mmap.c linux-user: fix compile failure if !CONFIG_USE_GUEST_BASE 2011-03-03 23:33:45 +01:00
qemu-types.h linux-user: Move abi_* typedefs into qemu-types.h 2008-12-08 18:12:04 +00:00
qemu.h linux-user/elfload: add FDPIC support 2011-02-09 10:33:54 +02:00
signal.c linux-user/arm: fix compilation failures using softfloat's struct types 2011-02-10 20:18:36 +01:00
socket.h Various linux-user structures and definitions fixes for PowerPC targets. 2007-12-10 08:24:59 +00:00
strace.c linux-user: in linux-user/strace.c, tswap() is useless 2011-02-17 11:46:34 +02:00
strace.list linux-user: add rmdir() strace 2011-02-17 11:46:34 +02:00
syscall_defs.h linux-user: Support the epoll syscalls 2011-02-17 11:46:34 +02:00
syscall_types.h linux-user: Implement FS_IOC_FIEMAP ioctl 2011-01-07 17:20:58 +02:00
syscall.c linux-user: Fix large seeks by 32 bit guest on 64 bit host 2011-03-06 19:06:27 +01:00
target_flat.h linux-user/FLAT: allow targets to override FLAT processing 2011-02-09 10:33:54 +02:00
uaccess.c Fix missing strnlen problems 2009-07-01 18:24:44 +00:00
vm86.c Update to a hopefully more future proof FSF address 2009-07-16 20:47:01 +00:00