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[5/5] linux-user: do_openat wrapper added

Message ID da1bf089bd9de8c63318393a429e2120e28be707.1350063473.git.riku.voipio@linaro.org
State New
Headers show

Commit Message

Riku Voipio Oct. 12, 2012, 6:24 p.m. UTC 
From: Riku Voipio <riku.voipio@linaro.org>

In preparations for for refactoring the main switch/case out

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
---
 linux-user/syscall.c |   21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)
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Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index eebf219..61030f2 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5092,6 +5092,19 @@  cleanup:
     unlock_user(pathname, arg1, 0);
     return ret;
 }
+
+static int do_openat(void *cpu_env, abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4)
+{
+    void *p;
+    int ret;
+    if (!(p = lock_user_string(arg2)))
+            return -EFAULT;
+    ret = sys_openat(arg1, path(p),
+            target_to_host_bitmask(arg3, fcntl_flags_tbl), arg4);
+    unlock_user(p, arg2, 0);
+    return ret;
+}
+
 static void do_exit(void *, abi_long) __attribute__ ((noreturn));
 static void do_exit(void *cpu_env, abi_long arg1)
 {
@@ -5199,13 +5212,7 @@  abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         break;
 #if defined(TARGET_NR_openat) && defined(__NR_openat)
     case TARGET_NR_openat:
-        if (!(p = lock_user_string(arg2)))
-            goto efault;
-        ret = get_errno(sys_openat(arg1,
-                                   path(p),
-                                   target_to_host_bitmask(arg3, fcntl_flags_tbl),
-                                   arg4));
-        unlock_user(p, arg2, 0);
+        ret = get_errno(do_openat(cpu_env, arg1, arg2, arg3, arg4));
         break;
 #endif
     case TARGET_NR_close: