* movemail.c (main): Use setregid, as setegid is missing on HP-UX (Bug#6811).

Suggested by Peter O'Gorman.

2 files changed, 9 insertions, 4 deletions

diff --git a/lib-src/ChangeLog b/lib-src/ChangeLog
index 421bdc06a43..aa5ae5ba7e6 100644
--- a/lib-src/ChangeLog
+++ b/lib-src/ChangeLog
@@ -1,3 +1,8 @@
+2011-01-23  Chong Yidong  <cyd@stupidchicken.com>
+
+        * movemail.c (main): Use setregid instead of setegid, which is
+        missing on older systems.  Suggested by Peter O'Gorman (Bug#6811).
+
 2011-01-02  Glenn Morris  <rgm@gnu.org>
 
         * ebrowse.c (version) <emacs_copyright>:
diff --git a/lib-src/movemail.c b/lib-src/movemail.c
index 3aebf79c6c8..5fcc6de17a6 100644
--- a/lib-src/movemail.c
+++ b/lib-src/movemail.c
@@ -360,7 +360,7 @@ main (argc, argv)
       time_t touched_lock, now;
 #endif
 
-      if (setuid (getuid ()) < 0 || setegid (real_gid) < 0)
+      if (setuid (getuid ()) < 0 || setregid (-1, real_gid) < 0)
         fatal ("Failed to drop privileges", 0, 0);
 
 #ifndef MAIL_USE_MMDF
@@ -387,7 +387,7 @@ main (argc, argv)
       if (outdesc < 0)
         pfatal_with_name (outname);
 
-      if (setegid (priv_gid) < 0)
+      if (setregid (-1, priv_gid) < 0)
         fatal ("Failed to regain privileges", 0, 0);
 
       /* This label exists so we can retry locking
@@ -484,7 +484,7 @@ main (argc, argv)
 #endif
 
       /* Prevent symlink attacks truncating other users' mailboxes */
-      if (setegid (real_gid) < 0)
+      if (setregid (-1, real_gid) < 0)
         fatal ("Failed to drop privileges", 0, 0);
 
       /* Check to make sure no errors before we zap the inbox.  */
@@ -519,7 +519,7 @@ main (argc, argv)
 #endif /* not MAIL_USE_SYSTEM_LOCK */
 
       /* End of mailbox truncation */
-      if (setegid (priv_gid) < 0)
+      if (setregid (-1, priv_gid) < 0)
         fatal ("Failed to regain privileges", 0, 0);
 
 #ifdef MAIL_USE_MAILLOCK