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linux-user: Implement sync_file_range{,2} syscalls

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Implement the missing syscalls sync_file_range and sync_file_range2.
The latter in particular is used by newer versions of apt on Ubuntu
for ARM.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
This commit is contained in:
Peter Maydell 2011-01-06 11:05:10 +00:00 committed by Riku Voipio
parent 2a704b137f
commit c727f47d59
3 changed files with 47 additions and 0 deletions
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18
configure vendored
View File

@ -2075,6 +2075,21 @@ if compile_prog "$ARCH_CFLAGS" "" ; then
fallocate=yes
fi
# check for sync_file_range
sync_file_range=no
cat > $TMPC << EOF
#include <fcntl.h>
int main(void)
{
sync_file_range(0, 0, 0, 0);
return 0;
}
EOF
if compile_prog "$ARCH_CFLAGS" "" ; then
sync_file_range=yes
fi
# check for dup3
dup3=no
cat > $TMPC << EOF
@ -2613,6 +2628,9 @@ fi
if test "$fallocate" = "yes" ; then
echo "CONFIG_FALLOCATE=y" >> $config_host_mak
fi
if test "$sync_file_range" = "yes" ; then
echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
fi
if test "$dup3" = "yes" ; then
echo "CONFIG_DUP3=y" >> $config_host_mak
fi

6
linux-user/strace.list
View File

@ -1518,3 +1518,9 @@
#ifdef TARGET_NR_utimensat
{ TARGET_NR_utimensat, "utimensat", NULL, print_utimensat, NULL },
#endif
#ifdef TARGET_NR_sync_file_range
{ TARGET_NR_sync_file_range, "sync_file_range", NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_sync_file_range2
{ TARGET_NR_sync_file_range2, "sync_file_range2", NULL, NULL, NULL },
#endif

23
linux-user/syscall.c
View File

@ -7364,6 +7364,29 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
case TARGET_NR_fallocate:
ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
break;
#endif
#if defined(CONFIG_SYNC_FILE_RANGE)
#if defined(TARGET_NR_sync_file_range)
case TARGET_NR_sync_file_range:
#if TARGET_ABI_BITS == 32
ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
target_offset64(arg4, arg5), arg6));
#else
ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
#endif
break;
#endif
#if defined(TARGET_NR_sync_file_range2)
case TARGET_NR_sync_file_range2:
/* This is like sync_file_range but the arguments are reordered */
#if TARGET_ABI_BITS == 32
ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
target_offset64(arg5, arg6), arg2));
#else
ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
#endif
break;
#endif
#endif
default:
unimplemented: