diff options
Diffstat (limited to 'arch/arm64/kernel/signal32.c')
-rw-r--r-- | arch/arm64/kernel/signal32.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index 4377907dbb70..cbc4edd1b1eb 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -125,76 +125,6 @@ static inline int get_sigset_t(sigset_t *set, return 0; } -int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) -{ - int err; - - if (!access_ok(VERIFY_WRITE, to, sizeof(*to))) - return -EFAULT; - - /* If you change siginfo_t structure, please be sure - * this code is fixed accordingly. - * It should never copy any pad contained in the structure - * to avoid security leaks, but must copy the generic - * 3 ints plus the relevant union member. - * This routine must convert siginfo from 64bit to 32bit as well - * at the same time. - */ - err = __put_user(from->si_signo, &to->si_signo); - err |= __put_user(from->si_errno, &to->si_errno); - err |= __put_user(from->si_code, &to->si_code); - if (from->si_code < 0) - err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, - SI_PAD_SIZE); - else switch (siginfo_layout(from->si_signo, from->si_code)) { - case SIL_KILL: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - case SIL_TIMER: - err |= __put_user(from->si_tid, &to->si_tid); - err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user(from->si_int, &to->si_int); - break; - case SIL_POLL: - err |= __put_user(from->si_band, &to->si_band); - err |= __put_user(from->si_fd, &to->si_fd); - break; - case SIL_FAULT: - err |= __put_user((compat_uptr_t)(unsigned long)from->si_addr, - &to->si_addr); -#ifdef BUS_MCEERR_AO - /* - * Other callers might not initialize the si_lsb field, - * so check explicitly for the right codes here. - */ - if (from->si_signo == SIGBUS && - (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)) - err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); -#endif - break; - case SIL_CHLD: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_status, &to->si_status); - err |= __put_user(from->si_utime, &to->si_utime); - err |= __put_user(from->si_stime, &to->si_stime); - break; - case SIL_RT: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_int, &to->si_int); - break; - case SIL_SYS: - err |= __put_user((compat_uptr_t)(unsigned long) - from->si_call_addr, &to->si_call_addr); - err |= __put_user(from->si_syscall, &to->si_syscall); - err |= __put_user(from->si_arch, &to->si_arch); - break; - } - return err; -} - /* * VFP save/restore code. * |