qemu/linux-user
Andreas Schwab 0f6bb1958f linux-user: Use getcwd syscall directly
The glibc getcwd function returns different errors than the getcwd
syscall, which triggers an assertion failure in the glibc getcwd function
when running under the emulation.

When the syscall returns ENAMETOOLONG, the glibc wrapper uses a fallback
implementation that potentially handles an unlimited path length, and
returns with ERANGE if the provided buffer is too small.  The qemu
emulation cannot distinguish the two cases, and thus always returns ERANGE.
This is unexpected by the glibc wrapper.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmmu3qplvi.fsf@suse.de>
[lv: updated description]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-07-27 22:05:34 +02:00
..
aarch64
alpha
arm
cris
generic
host
hppa
i386
m68k
microblaze
mips
mips64
nios2
openrisc
ppc
riscv
s390x
sh4
sparc
sparc64
tilegx
x86_64
xtensa
cpu_loop-common.h
elfload.c linux-user: don't use MAP_FIXED in pgd_find_hole_fallback 2020-07-27 09:41:18 +01:00
errno_defs.h
exit.c
fd-trans.c
fd-trans.h
flat.h
flatload.c
ioctls.h
linux_loop.h
linuxload.c
main.c linux-user: Ensure mmap_min_addr is non-zero 2020-07-27 22:02:40 +02:00
Makefile.objs
mmap.c
qemu.h
safe-syscall.S
signal-common.h
signal.c
socket.h
strace.c
strace.list
syscall.c linux-user: Use getcwd syscall directly 2020-07-27 22:05:34 +02:00
syscall_defs.h
syscall_types.h
target_flat.h
trace-events
uaccess.c
uname.c
uname.h
vm86.c