diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace32.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace32.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 4c1de6af4c0..9d30e10970a 100644 --- 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. @@ -64,6 +67,27 @@ static long compat_ptrace_old(struct task_struct *child, long request, return -EPERM; } +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) { @@ -282,6 +306,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 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: |