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[Qemu-devel] [PULL 15/22] linux-user: Add support for syncfs() syscall
From: |
riku . voipio |
Subject: |
[Qemu-devel] [PULL 15/22] linux-user: Add support for syncfs() syscall |
Date: |
Mon, 17 Oct 2016 16:24:33 +0300 |
From: Aleksandar Markovic <address@hidden>
This patch implements Qemu user mode syncfs() syscall support. Syscall
syncfs() syncs the filesystem containing file determined by the open
file descriptor passed as the argument to syncfs().
The implementation consists of a straightforward invocation of host's
syncfs(). Configure and strace support is included as well.
Signed-off-by: Aleksandar Markovic <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
---
configure | 18 ++++++++++++++++++
linux-user/strace.list | 2 +-
linux-user/syscall.c | 5 +++++
3 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/configure b/configure
index 1ce3d00..d3dafcb 100755
--- a/configure
+++ b/configure
@@ -3926,6 +3926,21 @@ if compile_prog "" "" ; then
clock_adjtime=yes
fi
+# syncfs probe
+syncfs=no
+cat > $TMPC <<EOF
+#include <unistd.h>
+
+int main(void)
+{
+ return syncfs(0);
+}
+EOF
+syncfs=no
+if compile_prog "" "" ; then
+ syncfs=yes
+fi
+
# Check if tools are available to build documentation.
if test "$docs" != "no" ; then
if has makeinfo && has pod2man; then
@@ -5214,6 +5229,9 @@ fi
if test "$clock_adjtime" = "yes" ; then
echo "CONFIG_CLOCK_ADJTIME=y" >> $config_host_mak
fi
+if test "$syncfs" = "yes" ; then
+ echo "CONFIG_SYNCFS=y" >> $config_host_mak
+fi
if test "$inotify" = "yes" ; then
echo "CONFIG_INOTIFY=y" >> $config_host_mak
fi
diff --git a/linux-user/strace.list b/linux-user/strace.list
index dcd3812..3b1282e 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -1459,7 +1459,7 @@
{ TARGET_NR_sync, "sync" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_syncfs
-{ TARGET_NR_syncfs, "syncfs" , NULL, NULL, NULL },
+{ TARGET_NR_syncfs, "syncfs" , "%s(%d)", NULL, NULL },
#endif
#ifdef TARGET_NR_syscall
{ TARGET_NR_syscall, "syscall" , NULL, NULL, NULL },
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 13513af..a91383f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8091,6 +8091,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
sync();
ret = 0;
break;
+#if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
+ case TARGET_NR_syncfs:
+ ret = get_errno(syncfs(arg1));
+ break;
+#endif
case TARGET_NR_kill:
ret = get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
break;
--
2.1.4
- [Qemu-devel] [PULL 04/22] linux-user: Fix msgrcv() and msgsnd() syscalls support, (continued)
- [Qemu-devel] [PULL 04/22] linux-user: Fix msgrcv() and msgsnd() syscalls support, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 08/22] linux-user: sparc64: Use correct target SHMLBA in shmat(), riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 06/22] linux-user: Fix syslog() syscall support, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 11/22] linux-user: Don't use alloca() for epoll_wait's epoll event array, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 09/22] linux-user: add kcmp() syscall, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 05/22] linux-user: Fix socketcall() syscall support, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 07/22] linux-user: Remove a duplicate item from strace.list, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 10/22] linux-user: add RTA_PRIORITY in netlink, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 13/22] linux-user: Fix definition of target_sigevent for 32-bit guests, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 14/22] linux-user: Add support for clock_adjtime() syscall, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 15/22] linux-user: Add support for syncfs() syscall,
riku . voipio <=
- [Qemu-devel] [PULL 12/22] linux-user: use libc wrapper instead of direct mremap syscall, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 19/22] linux-user: Fix fadvise64() syscall support for Mips32, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 18/22] linux-user: Redirect termbits.h for Mips64 to termbits.h for Mips32, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 17/22] linux-user: Update ioctls definitions for Mips32, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 16/22] linux-user: Update mips_syscall_args[] array in main.c, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 20/22] linux-user: added support for preadv() system call., riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 22/22] linux-user: disable unicore32 linux-user build, riku . voipio, 2016/10/17
- [Qemu-devel] [PULL 21/22] linux-user: added support for pwritev() system call., riku . voipio, 2016/10/17
- Re: [Qemu-devel] [PULL 00/22] linux-user changes, Peter Maydell, 2016/10/17