54 lines
1.6 KiB
Diff
54 lines
1.6 KiB
Diff
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commit 2f682f25c642fcfe7c511d04bc9d67e732282348
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Author: Jeff Layton <jlayton@redhat.com>
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Date: Wed Jan 22 11:17:19 2014 -0500
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gssd: set $HOME to prevent recursion when home dirs are on kerberized NFS mount
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Some krb5 routines will attempt to access files in the user's home
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directory. This is problematic for gssd when the user's homedir is
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on a kerberized NFS mount as it will end up deadlocked.
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Fix this by setting $HOME unconditionally to "/".
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Fixes this Fedora bug:
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https://bugzilla.redhat.com/show_bug.cgi?id=1052902
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Reported-by: Enrico Scholz <rh-bugzilla@ensc.de>
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Reported-by: nmorey <nmorey@kalray.eu>
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Tested-by: Michael Young <m.a.young@durham.ac.uk>
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Signed-off-by: Jeff Layton <jlayton@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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diff --git a/utils/gssd/gssd.c b/utils/gssd/gssd.c
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index fdad153..611ef1a 100644
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--- a/utils/gssd/gssd.c
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+++ b/utils/gssd/gssd.c
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@@ -46,6 +46,7 @@
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#include <unistd.h>
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#include <err.h>
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+#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@@ -161,6 +162,18 @@ main(int argc, char *argv[])
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}
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}
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+ /*
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+ * Some krb5 routines try to scrape info out of files in the user's
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+ * home directory. This can easily deadlock when that homedir is on a
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+ * kerberized NFS mount. By setting $HOME unconditionally to "/", we
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+ * prevent this behavior in routines that use $HOME in preference to
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+ * the results of getpw*.
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+ */
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+ if (setenv("HOME", "/", 1)) {
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+ printerr(1, "Unable to set $HOME: %s\n", strerror(errno));
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+ exit(1);
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+ }
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+
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i = 0;
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ccachesearch[i++] = strtok(ccachedir, ":");
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do {
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