mfu: copy much more xattrs

When copying files using dcp or dsync, extended attributes such as
project id are also copied.

Resolves hpc#553.

Signed-off-by: Sohei Koyama <skoyama@ddn.com>

src/common/mfu_flist_copy.c

@@ -18,6 +18,10 @@
 #include <time.h> /* asctime / localtime */
 #include <regex.h>
 
+#if DCOPY_USE_XATTRS
+#include <linux/fs.h>
+#endif
+
 #ifdef HAVE_LIBATTR
 #include <attr/libattr.h>
 #endif /* HAVE_LIBATTR */
@@ -443,6 +447,37 @@ static int mfu_copy_xattrs(
     mfu_free(&list);
     list_bufsize = 0;
 
+    /* open the src */
+    int src_fd = open(src_path, O_RDONLY);
+    if (src_fd >= 0) {
+        /* open the dest */
+        int dest_fd = open(dest_path, O_RDONLY);
+        if (dest_fd >= 0) {
+            struct fsxattr attr;
+            /* get src's xattr */
+            rc = ioctl(src_fd, FS_IOC_FSGETXATTR, &attr);
+            if (rc == 0) {
+                /* set dest's xattr */
+                rc = ioctl(dest_fd, FS_IOC_FSSETXATTR, &attr);
+                if (rc != 0) {
+                    MFU_LOG(MFU_LOG_ERR, "ioctl failed: `%s' errno=%d (%s)", dest_path, errno, strerror(errno));
+                }
+            } else {
+                MFU_LOG(MFU_LOG_ERR, "ioctl failed: `%s' errno=%d (%s)", src_path, errno, strerror(errno));
+            }
+            /* close dest */
+            close(dest_fd);
+        } else {
+            MFU_LOG(MFU_LOG_ERR, "open failed: `%s' errno=%d (%s)", dest_path, errno, strerror(errno));
+            rc = -1;
+        }
+        /* close src */
+        close(src_fd);
+    } else {
+        MFU_LOG(MFU_LOG_ERR, "open failed: `%s' errno=%d (%s)", src_path, errno, strerror(errno));
+        rc = -1;
+    }
+
 #endif /* DCOPY_USE_XATTR */
 
     return rc;