#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/elf.h>
+#include <linux/tracehook.h>
#ifdef CONFIG_PPC64
#include <linux/syscalls.h>
#include <linux/compat.h>
#include <linux/stddef.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
#endif
#include <asm/uaccess.h>
#define copy_siginfo_to_user copy_siginfo_to_user32
+/* mostly stolen from arch/s390/kernel/compat_signal.c */
+int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+{
+ int err;
+ u32 tmp;
+
+ if (!access_ok (VERIFY_READ, from, sizeof(compat_siginfo_t)))
+ return -EFAULT;
+
+ err = __get_user(to->si_signo, &from->si_signo);
+ err |= __get_user(to->si_errno, &from->si_errno);
+ err |= __get_user(to->si_code, &from->si_code);
+
+ if (to->si_code < 0)
+ err |= __copy_from_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
+ else {
+ switch (to->si_code >> 16) {
+ case __SI_RT >> 16: /* This is not generated by the kernel as of now. */
+ case __SI_MESGQ >> 16:
+ err |= __get_user(to->si_int, &from->si_int);
+ /* fallthrough */
+ case __SI_KILL >> 16:
+ err |= __get_user(to->si_pid, &from->si_pid);
+ err |= __get_user(to->si_uid, &from->si_uid);
+ break;
+ case __SI_CHLD >> 16:
+ err |= __get_user(to->si_pid, &from->si_pid);
+ err |= __get_user(to->si_uid, &from->si_uid);
+ err |= __get_user(to->si_utime, &from->si_utime);
+ err |= __get_user(to->si_stime, &from->si_stime);
+ err |= __get_user(to->si_status, &from->si_status);
+ break;
+ case __SI_FAULT >> 16:
+ err |= __get_user(tmp, &from->si_addr);
+ to->si_addr = (void __user *)(u64) tmp;
+ break;
+ case __SI_POLL >> 16:
+ err |= __get_user(to->si_band, &from->si_band);
+ err |= __get_user(to->si_fd, &from->si_fd);
+ break;
+ case __SI_TIMER >> 16:
+ err |= __get_user(to->si_tid, &from->si_tid);
+ err |= __get_user(to->si_overrun, &from->si_overrun);
+ err |= __get_user(to->si_int, &from->si_int);
+ break;
+ default:
+ break;
+ }
+ }
+ return err;
+}
+
/*
* Note: it is necessary to treat pid and sig as unsigned ints, with the
* corresponding cast to a signed int to insure that the proper conversion
return -EINVAL;
if (old_ctx != NULL) {
+ struct mcontext __user *mctx;
+
+ /*
+ * old_ctx might not be 16-byte aligned, in which
+ * case old_ctx->uc_mcontext won't be either.
+ * Because we have the old_ctx->uc_pad2 field
+ * before old_ctx->uc_mcontext, we need to round down
+ * from &old_ctx->uc_mcontext to a 16-byte boundary.
+ */
+ mctx = (struct mcontext __user *)
+ ((unsigned long) &old_ctx->uc_mcontext & ~0xfUL);
if (!access_ok(VERIFY_WRITE, old_ctx, sizeof(*old_ctx))
- || save_user_regs(regs, &old_ctx->uc_mcontext, 0)
+ || save_user_regs(regs, mctx, 0)
|| put_sigset_t(&old_ctx->uc_sigmask, ¤t->blocked)
- || __put_user(to_user_ptr(&old_ctx->uc_mcontext),
- &old_ctx->uc_regs))
+ || __put_user(to_user_ptr(mctx), &old_ctx->uc_regs))
return -EFAULT;
}
if (new_ctx == NULL)
its frame, and we can clear the TIF_RESTORE_SIGMASK flag */
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
+
+ tracehook_report_handle_signal(signr, &ka, oldset, regs);
}
return ret;