Update.

	* sysdeps/unix/sysv/linux/sigwait.c (do_sigwait): Make sure
	SIGSETXID is not blocked.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c (do_sigwaitinfo): Likewise.
	* sysdeps/unix/sysv/linux/sigtimedwait.c (do_sigtimedwait): Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
	* sysdeps/generic/sigfillset.c (sigfillset): Don't set SIGSETXID.

9 files changed, 65 insertions, 19 deletions

diff --git a/ChangeLog b/ChangeLog
index ccf33bf625..f96596caec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2004-09-28  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/unix/sysv/linux/sigwait.c (do_sigwait): Make sure
+	SIGSETXID is not blocked.
+	* sysdeps/unix/sysv/linux/sigwaitinfo.c (do_sigwaitinfo): Likewise.
+	* sysdeps/unix/sysv/linux/sigtimedwait.c (do_sigtimedwait): Likewise.
+	* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
+	* sysdeps/generic/sigfillset.c (sigfillset): Don't set SIGSETXID.
+
 	* sunrpc/get_myaddr.c (get_myaddress): Fix test for failing
 	getifaddrs call.
 	* sunrpc/pmap_clnt.c (__get_myaddress): Likewise.
diff --git a/nptl/sysdeps/pthread/pthread_sigmask.c b/nptl/sysdeps/pthread/pthread_sigmask.c
index efe186ac2c..0d12fe6bf0 100644
--- a/nptl/sysdeps/pthread/pthread_sigmask.c
+++ b/nptl/sysdeps/pthread/pthread_sigmask.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -31,13 +31,15 @@ pthread_sigmask (how, newmask, oldmask)
 {
   sigset_t local_newmask;
 
-  /* The only thing we have to make sure here is that SIGCANCEL is not
-     blocked.  */
+  /* The only thing we have to make sure here is that SIGCANCEL and
+     SIGSETXID is not blocked.  */
   if (newmask != NULL
-      && __builtin_expect (__sigismember (newmask, SIGCANCEL), 0))
+      && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0)
+	  || __builtin_expect (__sigismember (newmask, SIGSETXID), 0)))
     {
       local_newmask = *newmask;
       __sigdelset (&local_newmask, SIGCANCEL);
+      __sigdelset (&local_newmask, SIGSETXID);
       newmask = &local_newmask;
     }
 
diff --git a/nptl/sysdeps/pthread/sigaction.c b/nptl/sysdeps/pthread/sigaction.c
index 392cb65c90..4d36150a90 100644
--- a/nptl/sysdeps/pthread/sigaction.c
+++ b/nptl/sysdeps/pthread/sigaction.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -36,7 +36,7 @@ __sigaction (sig, act, oact)
      const struct sigaction *act;
      struct sigaction *oact;
 {
-  if (sig == SIGCANCEL)
+  if (__builtin_expect (sig == SIGCANCEL || sig == SIGSETXID, 0))
     {
       __set_errno (EINVAL);
       return -1;
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_kill.c b/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
index 87577be4dc..9115d6f40b 100644
--- a/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
+++ b/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -37,8 +37,9 @@ __pthread_kill (threadid, signo)
     /* Not a valid thread handle.  */
     return ESRCH;
 
-  /* Disallow sending the signal we use for cancellation.  */
-  if (signo == SIGCANCEL || signo == SIGTIMER)
+  /* Disallow sending the signal we use for cancellation, timers, for
+     for the setxid implementation.  */
+  if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID)
     return EINVAL;
 
   /* We have a special syscall to do the work.  */
diff --git a/sysdeps/generic/sigfillset.c b/sysdeps/generic/sigfillset.c
index 5f91fa6bda..95d52cf0c0 100644
--- a/sysdeps/generic/sigfillset.c
+++ b/sysdeps/generic/sigfillset.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,96,97,2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1991,96,97,2002,2003,2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -37,6 +37,10 @@ sigfillset (set)
 #ifdef SIGCANCEL
   __sigdelset (set, SIGCANCEL);
 #endif
+  /* Likewise for the signal to implement setxid.  */
+#ifdef SIGSETXID
+  __sigdelset (set, SIGSETXID);
+#endif
 
   return 0;
 }
diff --git a/sysdeps/unix/sysv/linux/sigprocmask.c b/sysdeps/unix/sysv/linux/sigprocmask.c
index e1b57566a5..1573780d8e 100644
--- a/sysdeps/unix/sysv/linux/sigprocmask.c
+++ b/sysdeps/unix/sysv/linux/sigprocmask.c
@@ -43,12 +43,20 @@ __sigprocmask (how, set, oset)
 #ifdef SIGCANCEL
   sigset_t local_newmask;
 
-  /* The only thing we have to make sure here is that SIGCANCEL is not
-     blocked.  */
-  if (set != NULL && __builtin_expect (__sigismember (set, SIGCANCEL), 0))
+  /* The only thing we have to make sure here is that SIGCANCEL and
+     SIGSETXID are not blocked.  */
+  if (set != NULL
+      && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+	  ))
     {
       local_newmask = *set;
       __sigdelset (&local_newmask, SIGCANCEL);
+# ifdef SIGSETXID
+      __sigdelset (&local_newmask, SIGSETXID);
+# endif
       set = &local_newmask;
     }
 #endif
diff --git a/sysdeps/unix/sysv/linux/sigtimedwait.c b/sysdeps/unix/sysv/linux/sigtimedwait.c
index 1705cb10bd..adeadc1587 100644
--- a/sysdeps/unix/sysv/linux/sigtimedwait.c
+++ b/sysdeps/unix/sysv/linux/sigtimedwait.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,2000,2002,2003,2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -32,12 +32,20 @@ do_sigtimedwait (const sigset_t *set, siginfo_t *info,
 {
 #ifdef SIGCANCEL
   sigset_t tmpset;
-  if (set != NULL && __sigismember (set, SIGCANCEL))
+  if (set != NULL
+      && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+	  ))
     {
       /* Create a temporary mask without the bit for SIGCANCEL set.  */
       // We are not copying more than we have to.
       memcpy (&tmpset, set, _NSIG / 8);
       __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+      __sigdelset (&tmpset, SIGSETXID);
+# endif
       set = &tmpset;
     }
 #endif
diff --git a/sysdeps/unix/sysv/linux/sigwait.c b/sysdeps/unix/sysv/linux/sigwait.c
index f755928493..7c865963cd 100644
--- a/sysdeps/unix/sysv/linux/sigwait.c
+++ b/sysdeps/unix/sysv/linux/sigwait.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,2000,2002,2003,2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -36,12 +36,20 @@ do_sigwait (const sigset_t *set, int *sig)
 
 #ifdef SIGCANCEL
   sigset_t tmpset;
-  if (set != NULL && __sigismember (set, SIGCANCEL))
+  if (set != NULL
+      && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+	  ))
     {
       /* Create a temporary mask without the bit for SIGCANCEL set.  */
       // We are not copying more than we have to.
       memcpy (&tmpset, set, _NSIG / 8);
       __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+      __sigdelset (&tmpset, SIGSETXID);
+# endif
       set = &tmpset;
     }
 #endif
diff --git a/sysdeps/unix/sysv/linux/sigwaitinfo.c b/sysdeps/unix/sysv/linux/sigwaitinfo.c
index a2dec820fc..a51a01f20b 100644
--- a/sysdeps/unix/sysv/linux/sigwaitinfo.c
+++ b/sysdeps/unix/sysv/linux/sigwaitinfo.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,2000,2002,2003,2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,12 +33,20 @@ do_sigwaitinfo (const sigset_t *set, siginfo_t *info)
 {
 #ifdef SIGCANCEL
   sigset_t tmpset;
-  if (set != NULL && __sigismember (set, SIGCANCEL))
+  if (set != NULL
+      && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+	  || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+	  ))
     {
       /* Create a temporary mask without the bit for SIGCANCEL set.  */
       // We are not copying more than we have to.
       memcpy (&tmpset, set, _NSIG / 8);
       __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+      __sigdelset (&tmpset, SIGSETXID);
+# endif
       set = &tmpset;
     }
 #endif