fileserver-may-not-have-valid-diskDataHandle-if-volume-was-offlined-20021003

also avoid potential null deref in ih_open but with the ReadVolumeHeader patch
we should never get there.

thanks to Kris Van Hees for discovering this

diff --git a/src/vol/ihandle.c b/src/vol/ihandle.c
index 78defc2..cfd7614 100644 (file)
--- a/src/vol/ihandle.c
+++ b/src/vol/ihandle.c
@@ -264,6 +264,9 @@ FdHandle_t *ih_open(IHandle_t *ihP)
     FD_t fd;
     FD_t closeFd;
 
+    if (!ihP) /* XXX should log here in the fileserver */
+       return NULL;
+
     IH_LOCK
 
     /* Do we already have an open file handle for this Inode? */

diff --git a/src/vol/volume.c b/src/vol/volume.c
index 4394ffd..77b8236 100644 (file)
--- a/src/vol/volume.c
+++ b/src/vol/volume.c
@@ -388,6 +388,11 @@ static void ReadHeader(Error *ec, IHandle_t *h, char *to, int size,
     FdHandle_t *fdP;
 
     *ec = 0;
+    if (h == NULL) {
+       *ec = VSALVAGE;
+       return;
+    }
+
     fdP = IH_OPEN(h);
     if (fdP == NULL) {
        *ec = VSALVAGE;