1 files changed, 99 insertions, 1 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 0fc36406f32c..8a9643857c4a 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -157,6 +157,104 @@ struct compat_sigaction {
         compat_sigset_t                 sa_mask __packed;
 };
 
+typedef union compat_sigval {
+        compat_int_t    sival_int;
+        compat_uptr_t   sival_ptr;
+} compat_sigval_t;
+
+typedef struct compat_siginfo {
+        int si_signo;
+#ifndef __ARCH_HAS_SWAPPED_SIGINFO
+        int si_errno;
+        int si_code;
+#else
+        int si_code;
+        int si_errno;
+#endif
+
+        union {
+                int _pad[128/sizeof(int) - 3];
+
+                /* kill() */
+                struct {
+                        compat_pid_t _pid;      /* sender's pid */
+                        __compat_uid32_t _uid;  /* sender's uid */
+                } _kill;
+
+                /* POSIX.1b timers */
+                struct {
+                        compat_timer_t _tid;    /* timer id */
+                        int _overrun;           /* overrun count */
+                        compat_sigval_t _sigval;        /* same as below */
+                } _timer;
+
+                /* POSIX.1b signals */
+                struct {
+                        compat_pid_t _pid;      /* sender's pid */
+                        __compat_uid32_t _uid;  /* sender's uid */
+                        compat_sigval_t _sigval;
+                } _rt;
+
+                /* SIGCHLD */
+                struct {
+                        compat_pid_t _pid;      /* which child */
+                        __compat_uid32_t _uid;  /* sender's uid */
+                        int _status;            /* exit code */
+                        compat_clock_t _utime;
+                        compat_clock_t _stime;
+                } _sigchld;
+
+#ifdef CONFIG_X86_X32_ABI
+                /* SIGCHLD (x32 version) */
+                struct {
+                        compat_pid_t _pid;      /* which child */
+                        __compat_uid32_t _uid;  /* sender's uid */
+                        int _status;            /* exit code */
+                        compat_s64 _utime;
+                        compat_s64 _stime;
+                } _sigchld_x32;
+#endif
+
+                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
+                struct {
+                        compat_uptr_t _addr;    /* faulting insn/memory ref. */
+#ifdef __ARCH_SI_TRAPNO
+                        int _trapno;    /* TRAP # which caused the signal */
+#endif
+                        union {
+                                /*
+                                 * used when si_code=BUS_MCEERR_AR or
+                                 * used when si_code=BUS_MCEERR_AO
+                                 */
+                                short int _addr_lsb;    /* Valid LSB of the reported address. */
+                                /* used when si_code=SEGV_BNDERR */
+                                struct {
+                                        short _dummy_bnd;
+                                        compat_uptr_t _lower;
+                                        compat_uptr_t _upper;
+                                } _addr_bnd;
+                                /* used when si_code=SEGV_PKUERR */
+                                struct {
+                                        short _dummy_pkey;
+                                        u32 _pkey;
+                                } _addr_pkey;
+                        };
+                } _sigfault;
+
+                /* SIGPOLL */
+                struct {
+                        compat_long_t _band;    /* POLL_IN, POLL_OUT, POLL_MSG */
+                        int _fd;
+                } _sigpoll;
+
+                struct {
+                        compat_uptr_t _call_addr; /* calling user insn */
+                        int _syscall;   /* triggering system call number */
+                        unsigned int _arch;     /* AUDIT_ARCH_* of syscall */
+                } _sigsys;
+        } _sifields;
+} compat_siginfo_t;
+
 /*
  * These functions operate on 32- or 64-bit specs depending on
  * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
@@ -412,7 +510,7 @@ long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
                        unsigned long bitmap_size);
 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
                        unsigned long bitmap_size);
-int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
+int copy_siginfo_from_user32(siginfo_t *to, const struct compat_siginfo __user *from);
 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from);
 int get_compat_sigevent(struct sigevent *event,
                 const struct compat_sigevent __user *u_event);