diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index bebe44265b8b..4976f05aa09b 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2815,6 +2815,96 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from) } #ifdef CONFIG_COMPAT +int copy_siginfo_to_user32(struct compat_siginfo __user *to, + const struct siginfo *from) +#if defined(CONFIG_X86_X32_ABI) || defined(CONFIG_IA32_EMULATION) +{ + return __copy_siginfo_to_user32(to, from, in_x32_syscall()); +} +int __copy_siginfo_to_user32(struct compat_siginfo __user *to, + const struct siginfo *from, bool x32_ABI) +#endif +{ + struct compat_siginfo new; + memset(&new, 0, sizeof(new)); + + new.si_signo = from->si_signo; + new.si_errno = from->si_errno; + new.si_code = from->si_code; + switch(siginfo_layout(from->si_signo, from->si_code)) { + case SIL_KILL: + new.si_pid = from->si_pid; + new.si_uid = from->si_uid; + break; + case SIL_TIMER: + new.si_tid = from->si_tid; + new.si_overrun = from->si_overrun; + new.si_int = from->si_int; + break; + case SIL_POLL: + new.si_band = from->si_band; + new.si_fd = from->si_fd; + break; + case SIL_FAULT: + new.si_addr = ptr_to_compat(from->si_addr); +#ifdef __ARCH_SI_TRAPNO + new.si_trapno = from->si_trapno; +#endif +#ifdef BUS_MCEERR_AR + if ((from->si_signo == SIGBUS) && (from->si_code == BUS_MCEERR_AR)) + new.si_addr_lsb = from->si_addr_lsb; +#endif +#ifdef BUS_MCEERR_AO + if ((from->si_signo == SIGBUS) && (from->si_code == BUS_MCEERR_AO)) + new.si_addr_lsb = from->si_addr_lsb; +#endif +#ifdef SEGV_BNDERR + if ((from->si_signo == SIGSEGV) && + (from->si_code == SEGV_BNDERR)) { + new.si_lower = ptr_to_compat(from->si_lower); + new.si_upper = ptr_to_compat(from->si_upper); + } +#endif +#ifdef SEGV_PKUERR + if ((from->si_signo == SIGSEGV) && + (from->si_code == SEGV_PKUERR)) + new.si_pkey = from->si_pkey; +#endif + + break; + case SIL_CHLD: + new.si_pid = from->si_pid; + new.si_uid = from->si_uid; + new.si_status = from->si_status; +#ifdef CONFIG_X86_X32_ABI + if (x32_ABI) { + new._sifields._sigchld_x32._utime = from->si_utime; + new._sifields._sigchld_x32._stime = from->si_stime; + } else +#endif + { + new.si_utime = from->si_utime; + new.si_stime = from->si_stime; + } + break; + case SIL_RT: + new.si_pid = from->si_pid; + new.si_uid = from->si_uid; + new.si_int = from->si_int; + break; + case SIL_SYS: + new.si_call_addr = ptr_to_compat(from->si_call_addr); + new.si_syscall = from->si_syscall; + new.si_arch = from->si_arch; + break; + } + + if (copy_to_user(to, &new, sizeof(struct compat_siginfo))) + return -EFAULT; + + return 0; +} + int copy_siginfo_from_user32(struct siginfo *to, const struct compat_siginfo __user *ufrom) { |