projects / people / arne_f / kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 431dc804 RB |
2 | #ifndef __ASM_COMPAT_SIGNAL_H |
| 3 | #define __ASM_COMPAT_SIGNAL_H | |
| 4 | ||
| 5 | #include <linux/bug.h> | |
| 6 | #include <linux/compat.h> | |
| 7 | #include <linux/compiler.h> | |
| 8 | ||
| 151fd6ac RB |
9 | #include <asm/signal.h> |
| 10 | #include <asm/siginfo.h> | |
| 11 | ||
| 7c0f6ba6 | 12 | #include <linux/uaccess.h> |
| 4c156994 | 13 | |
| 431dc804 RB |
14 | static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d, |
| 15 | const sigset_t *s) | |
| 16 | { | |
| 17 | int err; | |
| 18 | ||
| 19 | BUG_ON(sizeof(*d) != sizeof(*s)); | |
| 20 | BUG_ON(_NSIG_WORDS != 2); | |
| 21 | ||
| 70342287 | 22 | err = __put_user(s->sig[0], &d->sig[0]); |
| 431dc804 | 23 | err |= __put_user(s->sig[0] >> 32, &d->sig[1]); |
| 70342287 | 24 | err |= __put_user(s->sig[1], &d->sig[2]); |
| 431dc804 RB |
25 | err |= __put_user(s->sig[1] >> 32, &d->sig[3]); |
| 26 | ||
| 27 | return err; | |
| 28 | } | |
| 29 | ||
| 30 | static inline int __copy_conv_sigset_from_user(sigset_t *d, | |
| 31 | const compat_sigset_t __user *s) | |
| 32 | { | |
| 33 | int err; | |
| 34 | union sigset_u { | |
| 35 | sigset_t s; | |
| 36 | compat_sigset_t c; | |
| 37 | } *u = (union sigset_u *) d; | |
| 38 | ||
| 39 | BUG_ON(sizeof(*d) != sizeof(*s)); | |
| 40 | BUG_ON(_NSIG_WORDS != 2); | |
| 41 | ||
| 431dc804 RB |
42 | #ifdef CONFIG_CPU_BIG_ENDIAN |
| 43 | err = __get_user(u->c.sig[1], &s->sig[0]); | |
| 44 | err |= __get_user(u->c.sig[0], &s->sig[1]); | |
| 45 | err |= __get_user(u->c.sig[3], &s->sig[2]); | |
| 46 | err |= __get_user(u->c.sig[2], &s->sig[3]); | |
| 47 | #endif | |
| 48 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | |
| 49 | err = __get_user(u->c.sig[0], &s->sig[0]); | |
| 50 | err |= __get_user(u->c.sig[1], &s->sig[1]); | |
| 51 | err |= __get_user(u->c.sig[2], &s->sig[2]); | |
| 52 | err |= __get_user(u->c.sig[3], &s->sig[3]); | |
| 53 | #endif | |
| 54 | ||
| 55 | return err; | |
| 56 | } | |
| 57 | ||
| 58 | #endif /* __ASM_COMPAT_SIGNAL_H */ |