statx: allow system call to be invoked from io_uring

[sfrench/cifs-2.6.git] / fs / stat.c

diff --git a/fs/stat.c b/fs/stat.c
index 030008796479aa135964995e4fe8a1fad91ede37..65cf51fda2aa43b49a11676fb5d043961b11f986 100644 (file)
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -567,6 +567,24 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer)
        return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0;
 }
 
+int do_statx(int dfd, const char __user *filename, unsigned flags,
+            unsigned int mask, struct statx __user *buffer)
+{
+       struct kstat stat;
+       int error;
+
+       if (mask & STATX__RESERVED)
+               return -EINVAL;
+       if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_SYNC_TYPE)
+               return -EINVAL;
+
+       error = vfs_statx(dfd, filename, flags, &stat, mask);
+       if (error)
+               return error;
+
+       return cp_statx(&stat, buffer);
+}
+
 /**
  * sys_statx - System call to get enhanced stats
  * @dfd: Base directory to pathwalk from *or* fd to stat.
@@ -583,19 +601,7 @@ SYSCALL_DEFINE5(statx,
                unsigned int, mask,
                struct statx __user *, buffer)
 {
-       struct kstat stat;
-       int error;
-
-       if (mask & STATX__RESERVED)
-               return -EINVAL;
-       if ((flags & AT_STATX_SYNC_TYPE) == AT_STATX_SYNC_TYPE)
-               return -EINVAL;
-
-       error = vfs_statx(dfd, filename, flags, &stat, mask);
-       if (error)
-               return error;
-
-       return cp_statx(&stat, buffer);
+       return do_statx(dfd, filename, flags, mask, buffer);
 }
 
 #ifdef CONFIG_COMPAT