56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
#ifndef __ASM_COMPAT_SIGNAL_H
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#define __ASM_COMPAT_SIGNAL_H
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#include <linux/bug.h>
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#include <linux/compat.h>
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#include <linux/compiler.h>
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static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
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const sigset_t *s)
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{
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int err;
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BUG_ON(sizeof(*d) != sizeof(*s));
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BUG_ON(_NSIG_WORDS != 2);
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err = __put_user(s->sig[0], &d->sig[0]);
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err |= __put_user(s->sig[0] >> 32, &d->sig[1]);
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err |= __put_user(s->sig[1], &d->sig[2]);
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err |= __put_user(s->sig[1] >> 32, &d->sig[3]);
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return err;
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}
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static inline int __copy_conv_sigset_from_user(sigset_t *d,
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const compat_sigset_t __user *s)
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{
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int err;
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union sigset_u {
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sigset_t s;
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compat_sigset_t c;
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} *u = (union sigset_u *) d;
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BUG_ON(sizeof(*d) != sizeof(*s));
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BUG_ON(_NSIG_WORDS != 2);
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if (unlikely(!access_ok(VERIFY_READ, d, sizeof(*d))))
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return -EFAULT;
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#ifdef CONFIG_CPU_BIG_ENDIAN
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err = __get_user(u->c.sig[1], &s->sig[0]);
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err |= __get_user(u->c.sig[0], &s->sig[1]);
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err |= __get_user(u->c.sig[3], &s->sig[2]);
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err |= __get_user(u->c.sig[2], &s->sig[3]);
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#endif
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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err = __get_user(u->c.sig[0], &s->sig[0]);
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err |= __get_user(u->c.sig[1], &s->sig[1]);
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err |= __get_user(u->c.sig[2], &s->sig[2]);
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err |= __get_user(u->c.sig[3], &s->sig[3]);
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#endif
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return err;
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}
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#endif /* __ASM_COMPAT_SIGNAL_H */
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