Changeset 25035 for branches/eam_branches/20090715/Ohana/src/libdvo/src/dvo_image.c

Timestamp:

Aug 10, 2009, 3:47:42 AM (17 years ago)

Author:

eugene

Message:

adjust dvo locking to allow read-only access to databases in dvo shell

File:

• branches/eam_branches/20090715/Ohana/src/libdvo/src/dvo_image.c (modified) (1 diff)

branches/eam_branches/20090715/Ohana/src/libdvo/src/dvo_image.c

@@ -4 +4 @@
 int dvo_image_lock (FITS_DB *db, char *filename, double timeout, int lockstate) {
 
-  /* lock the image catalog */
-  if (!check_file_access (filename, FALSE, TRUE)) return (FALSE);
+  int READWRITE;
+
+  // default access control options:
+  READWRITE = TRUE;
+
+  // in read-only mode, do not backup or require write access
+  if (lockstate == LCK_SOFT) {
+    READWRITE = FALSE;
+  }
+
+  // do not perform a backup here
+  if (!check_file_access (filename, FALSE, READWRITE, TRUE)) return (FALSE);
 
   db[0].lockstate = lockstate;