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Annotation of sys/compat/hpux/hppa/hpux_sig2.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: hpux_sig2.c,v 1.1 2004/09/19 21:56:18 mickey Exp $    */
                      2:
                      3: /*
                      4:  * Copyright (c) 2004 Michael Shalayeff
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
                     20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
                     24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
                     25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
                     26:  * THE POSSIBILITY OF SUCH DAMAGE.
                     27:  */
                     28:
                     29:
                     30: #include <sys/param.h>
                     31: #include <sys/systm.h>
                     32: #include <sys/proc.h>
                     33: #include <sys/mount.h>
                     34: #include <sys/signalvar.h>
                     35: #include <sys/syscallargs.h>
                     36:
                     37: #include <compat/hpux/hpux.h>
                     38: #include <compat/hpux/hpux_sig.h>
                     39: #include <compat/hpux/hpux_util.h>
                     40: #include <compat/hpux/hppa/hpux_syscallargs.h>
                     41:
                     42: int
                     43: hpux_sys_sigaltstack(struct proc *p, void *v, register_t *retval)
                     44: {
                     45:        struct hpux_sys_sigaltstack_args /* {
                     46:                syscallarg(struct hpux_sigaltstack *) nss;
                     47:                syscallarg(struct hpux_sigaltstack *) oss;
                     48:        } */ *uap = v;
                     49:        struct sys_sigaltstack_args saa;
                     50:        hpux_stack_t hsa;
                     51:        stack_t *psa, sa;
                     52:        caddr_t sg;
                     53:        int error;
                     54:
                     55:        if ((error = copyin(SCARG(uap, nss), &hsa, sizeof hsa)))
                     56:                return (error);
                     57:
                     58:        sa.ss_sp = hsa.ss_sp;
                     59:        sa.ss_size = hsa.ss_size;
                     60:        sa.ss_flags = hsa.ss_flags & SS_ONSTACK;
                     61:        if (hsa.ss_flags & HPUX_SS_DISABLE)
                     62:                sa.ss_flags |= SS_DISABLE;
                     63:
                     64:        sg = stackgap_init(p->p_emul);
                     65:        psa = stackgap_alloc(&sg, 2 * sizeof(struct sigaltstack));
                     66:        SCARG(&saa, nss) = &psa[0];
                     67:        SCARG(&saa, oss) = &psa[1];
                     68:
                     69:        if ((error = copyout(&sa, psa, sizeof sa)))
                     70:                return (error);
                     71:
                     72:        if ((error = sys_sigaltstack(p, &saa, retval)))
                     73:                return (error);
                     74:
                     75:        if ((error = copyin(SCARG(&saa, oss), &sa, sizeof sa)))
                     76:                return (error);
                     77:
                     78:        hsa.ss_sp = sa.ss_sp;
                     79:        hsa.ss_flags = sa.ss_flags & SS_ONSTACK;
                     80:        if (sa.ss_flags & SS_DISABLE)
                     81:                hsa.ss_flags |= HPUX_SS_DISABLE;
                     82:        hsa.ss_size = sa.ss_size;
                     83:
                     84:        return (copyout(&hsa, SCARG(uap, oss), sizeof hsa));
                     85: }