Reenabled linux-xen, added patches for Xen Kernel Version 2.6.27.31,

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.fixes / ptrace-getsiginfo

diff --git a/src/patches/suse-2.6.27.31/patches.fixes/ptrace-getsiginfo b/src/patches/suse-2.6.27.31/patches.fixes/ptrace-getsiginfo
new file mode 100644 (file)
index 0000000..a913c4f
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.fixes/ptrace-getsiginfo
@@ -0,0 +1,78 @@
+From: Andreas Schwab <schwab@suse.de>
+Subject: Add compat handler for PTRACE_GETSIGINFO
+
+Current versions of gdb require a working implementation of
+PTRACE_GETSIGINFO for proper watchpoint support.  Since struct siginfo
+contains pointers it must be converted when passed to a 32-bit debugger.
+
+Signed-off-by: Andreas Schwab <schwab@suse.de>
+---
+ arch/powerpc/kernel/ppc32.h    |    2 ++
+ arch/powerpc/kernel/ptrace32.c |   27 +++++++++++++++++++++++++++
+ 2 files changed, 29 insertions(+)
+
+--- a/arch/powerpc/kernel/ppc32.h
++++ b/arch/powerpc/kernel/ppc32.h
+@@ -136,4 +136,6 @@ struct ucontext32 {
+       struct mcontext32       uc_mcontext;
+ };
+ 
++extern int copy_siginfo_to_user32(struct compat_siginfo __user *d, siginfo_t *s);
++
+ #endif  /* _PPC64_PPC32_H */
+--- a/arch/powerpc/kernel/ptrace32.c
++++ b/arch/powerpc/kernel/ptrace32.c
+@@ -29,12 +29,15 @@
+ #include <linux/security.h>
+ #include <linux/signal.h>
+ #include <linux/compat.h>
++#include <linux/elf.h>
+ 
+ #include <asm/uaccess.h>
+ #include <asm/page.h>
+ #include <asm/pgtable.h>
+ #include <asm/system.h>
+ 
++#include "ppc32.h"
++
+ /*
+  * does not yet catch signals sent when the child dies.
+  * in exit.c or in signal.c.
+@@ -69,6 +72,27 @@ static long compat_ptrace_old(struct tas
+ #define FPRHALF(i) (((i) - PT_FPR0) & 1)
+ #define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) + FPRHALF(i)
+ 
++static int compat_ptrace_getsiginfo(struct task_struct *child, compat_siginfo_t __user *data)
++{
++      siginfo_t lastinfo;
++      int error = -ESRCH;
++
++      read_lock(&tasklist_lock);
++      if (likely(child->sighand != NULL)) {
++              error = -EINVAL;
++              spin_lock_irq(&child->sighand->siglock);
++              if (likely(child->last_siginfo != NULL)) {
++                      lastinfo = *child->last_siginfo;
++                      error = 0;
++              }
++              spin_unlock_irq(&child->sighand->siglock);
++      }
++      read_unlock(&tasklist_lock);
++      if (!error)
++              return copy_siginfo_to_user32(data, &lastinfo);
++      return error;
++}
++
+ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+                       compat_ulong_t caddr, compat_ulong_t cdata)
+ {
+@@ -290,6 +314,9 @@ long compat_arch_ptrace(struct task_stru
+                       0, PT_REGS_COUNT * sizeof(compat_long_t),
+                       compat_ptr(data));
+ 
++      case PTRACE_GETSIGINFO:
++              return compat_ptrace_getsiginfo(child, compat_ptr(data));
++
+       case PTRACE_GETFPREGS:
+       case PTRACE_SETFPREGS:
+       case PTRACE_GETVRREGS: