Signal handler fix and man page tweak

Resolves: #799958, #695656

Signed-off-by: Roman Rakus <rrakus@redhat.com>

bash-4.2-manpage_trap.patch

@@ -0,0 +1,12 @@
+diff -up bash-4.1/doc/bash.1.manpage_trap bash-4.1/doc/bash.1
+--- bash-4.1/doc/bash.1.manpage_trap	2012-08-28 10:06:00.561999092 +0200
++++ bash-4.1/doc/bash.1	2012-08-28 10:06:24.225304505 +0200
+@@ -9251,7 +9251,7 @@ being inverted via
+ These are the same conditions obeyed by the \fBerrexit\fP option.
+ .if t .sp 0.5
+ .if n .sp 1
+-Signals ignored upon entry to the shell cannot be trapped or reset.
++Signals ignored upon entry to the shell cannot be trapped, reset or listed.
+ Trapped signals that are not being ignored are reset to their original
+ values in a subshell or subshell environment when one is created.
+ The return status is false if any

bash-4.2-signal.patch

@@ -0,0 +1,36 @@
+diff -up bash-4.1/sig.h.signal bash-4.1/sig.h
+--- bash-4.1/sig.h.signal	2009-01-04 20:32:41.000000000 +0100
++++ bash-4.1/sig.h	2012-08-28 11:19:14.920224571 +0200
+@@ -96,6 +96,8 @@ do { \
+   sigprocmask (SIG_BLOCK, &nvar, &ovar); \
+ } while (0)
+ 
++#define UNBLOCK_SIGNAL(ovar) sigprocmask (SIG_SETMASK, &ovar, (sigset_t *)NULL)
++
+ #if defined (HAVE_POSIX_SIGNALS)
+ #  define BLOCK_CHILD(nvar, ovar) \
+ 	BLOCK_SIGNAL (SIGCHLD, nvar, ovar)
+diff -up bash-4.1/trap.c.signal bash-4.1/trap.c
+--- bash-4.1/trap.c.signal	2009-10-10 23:21:44.000000000 +0200
++++ bash-4.1/trap.c	2012-08-28 10:58:14.746345797 +0200
+@@ -516,6 +516,8 @@ set_signal (sig, string)
+      int sig;
+      char *string;
+ {
++  sigset_t set, oset;
++
+   if (SPECIAL_TRAP (sig))
+     {
+       change_signal (sig, savestring (string));
+@@ -546,9 +548,10 @@ set_signal (sig, string)
+      environment in which it is safe to do so. */
+   if ((sigmodes[sig] & SIG_NO_TRAP) == 0)
+     {
+-      set_signal_handler (sig, SIG_IGN);
++      BLOCK_SIGNAL (sig, set, oset);
+       change_signal (sig, savestring (string));
+       set_signal_handler (sig, trap_handler);
++      UNBLOCK_SIGNAL (oset);
+     }
+   else
+     change_signal (sig, savestring (string));

bash.spec

@@ -6,7 +6,7 @@
 Version: %{baseversion}%{patchleveltag}
 Name: bash
 Summary: The GNU Bourne Again shell
-Release: 6%{?dist}
+Release: 7%{?dist}
 Group: System Environment/Shells
 License: GPLv3+
 Url: http://www.gnu.org/software/bash
@@ -95,6 +95,12 @@ Patch121: bash-4.2-coverity.patch
 # Don't call malloc in signal handler
 Patch122: bash-4.1-defer-sigchld-trap.patch
 
+# 799958, updated info about trap
+Patch123: bash-4.2-manpage_trap.patch
+
+# 695656, block the signal and unblock it after the new handler is installed
+Patch124: bash-4.2-signal.patch
+
 BuildRequires: texinfo bison
 BuildRequires: ncurses-devel
 BuildRequires: autoconf, gettext
@@ -184,6 +190,8 @@ This package contains documentation files for %{name}.
 %patch120 -p1 -b .logout
 %patch121 -p1 -b .coverity
 %patch122 -p1 -b .defer_sigchld_trap
+%patch123 -p1
+%patch124 -p1 -b .signal
 
 echo %{version} > _distribution
 echo %{release} > _patchlevel
@@ -375,6 +383,10 @@ end
 #%doc doc/*.ps doc/*.0 doc/*.html doc/article.txt
 
 %changelog
+* Tue Aug 28 2012 Roman Rakus <rrakus@redhat.com> - 4.2.37-7
+- Update info about trap in man page
+  Resolves: #799958
+
 * Wed Aug 22 2012 Ondrej Oprala <ooprala@redhat.com> - 4.2.37-6
 - Revert revision 4.2.37-5 - already fixed upstream
 
@@ -386,6 +398,10 @@ end
 * Wed Aug 08 2012 Roman Rakus <rrakus@redhat.com> - 4.2.37-4
 - Added doc subdir to bash-doc ownership list
   Resolves: #846734
+- instead of setting the signal handler to SIG_IGN while installing
+  the new trap handler, block the signal and unblock it after the new handler
+  is installed
+  Resolves: #695656
 
 * Tue Jul 24 2012 Roman Rakus <rrakus@redhat.com> - 4.2.37-3
 - Increment patchlevel tag