r22318: If we're running as non root we might not be able to dump the core file

to the corepath.

Even the chdir() will fail if the LOGFILEBASE path is set 0700.

If the currrent user doesn't have the permission to create the core file
we end with:
   unable to change to <LOGFILEBASE>
   refusing to dump core

The alternative would be to change the permissions of the directory.
But taht would not ensure core dumps are working out of the box.

diff --git a/source/lib/fault.c b/source/lib/fault.c
index b214d9027ea5b1fb8b068e5231bcaf8382880c9a..26b48a80cd05401e8ecb080f2d2c3847309ab9bf 100644 (file)
--- a/source/lib/fault.c
+++ b/source/lib/fault.c
@@ -161,6 +161,13 @@ void dump_core_setup(const char *progname)
        }
 
 #if DUMP_CORE
+       /* If we're running as non root we might not be able to dump the core
+        * file to the corepath.  There must not be an unbecome_root() before
+        * we call abort(). */
+       if (getuid() != 0) {
+               become_root();
+       }
+
        if (*corepath != '\0') {
                /* The chdir might fail if we dump core before we finish
                 * processing the config file.