Annotation of sys/compat/svr4/svr4_exec.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: svr4_exec.c,v 1.15 2006/01/19 17:54:56 mickey Exp $ */
! 2: /* $NetBSD: svr4_exec.c,v 1.16 1995/10/14 20:24:20 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994 Christos Zoulas
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 29: */
! 30:
! 31: #include <sys/param.h>
! 32: #include <sys/systm.h>
! 33: #include <sys/kernel.h>
! 34: #include <sys/proc.h>
! 35: #include <sys/malloc.h>
! 36: #include <sys/namei.h>
! 37: #include <sys/vnode.h>
! 38: #include <sys/exec.h>
! 39: #include <sys/exec_elf.h>
! 40: #include <sys/exec_olf.h>
! 41:
! 42: #include <sys/mman.h>
! 43: #include <uvm/uvm_extern.h>
! 44:
! 45: #include <machine/cpu.h>
! 46: #include <machine/reg.h>
! 47: #include <machine/svr4_machdep.h>
! 48:
! 49: #include <compat/svr4/svr4_util.h>
! 50: #include <compat/svr4/svr4_syscall.h>
! 51: #include <compat/svr4/svr4_exec.h>
! 52: #include <compat/svr4/svr4_errno.h>
! 53:
! 54: static void *svr4_copyargs(struct exec_package *, struct ps_strings *,
! 55: void *, void *);
! 56:
! 57: const char svr4_emul_path[] = "/emul/svr4";
! 58: extern char svr4_sigcode[], svr4_esigcode[];
! 59: extern struct sysent svr4_sysent[];
! 60: #ifdef SYSCALL_DEBUG
! 61: extern char *svr4_syscallnames[];
! 62: #endif
! 63:
! 64: struct emul emul_svr4 = {
! 65: "svr4",
! 66: native_to_svr4_errno,
! 67: svr4_sendsig,
! 68: SVR4_SYS_syscall,
! 69: SVR4_SYS_MAXSYSCALL,
! 70: svr4_sysent,
! 71: #ifdef SYSCALL_DEBUG
! 72: svr4_syscallnames,
! 73: #else
! 74: NULL,
! 75: #endif
! 76: SVR4_AUX_ARGSIZ,
! 77: svr4_copyargs,
! 78: setregs,
! 79: exec_elf32_fixup,
! 80: svr4_sigcode,
! 81: svr4_esigcode,
! 82: };
! 83:
! 84: static void *
! 85: svr4_copyargs(pack, arginfo, stack, argp)
! 86: struct exec_package *pack;
! 87: struct ps_strings *arginfo;
! 88: void *stack;
! 89: void *argp;
! 90: {
! 91: AuxInfo *a;
! 92:
! 93: if (!(a = (AuxInfo *)elf32_copyargs(pack, arginfo, stack, argp)))
! 94: return (NULL);
! 95: #ifdef SVR4_COMPAT_SOLARIS2
! 96: if (pack->ep_emul_arg) {
! 97: a->au_id = AUX_sun_uid;
! 98: a->au_v = p->p_ucred->cr_uid;
! 99: a++;
! 100:
! 101: a->au_id = AUX_sun_ruid;
! 102: a->au_v = p->p_cred->ruid;
! 103: a++;
! 104:
! 105: a->au_id = AUX_sun_gid;
! 106: a->au_v = p->p_ucred->cr_gid;
! 107: a++;
! 108:
! 109: a->au_id = AUX_sun_rgid;
! 110: a->au_v = p->p_cred->rgid;
! 111: a++;
! 112: }
! 113: #endif
! 114: return (a);
! 115: }
! 116:
! 117: int
! 118: svr4_elf_probe(p, epp, itp, pos, os)
! 119: struct proc *p;
! 120: struct exec_package *epp;
! 121: char *itp;
! 122: u_long *pos;
! 123: u_int8_t *os;
! 124: {
! 125: char *bp;
! 126: int error;
! 127: size_t len;
! 128:
! 129: if (itp) {
! 130: if ((error = emul_find(p, NULL, svr4_emul_path, itp, &bp, 0)))
! 131: return (error);
! 132: if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
! 133: return (error);
! 134: free(bp, M_TEMP);
! 135: }
! 136: epp->ep_emul = &emul_svr4;
! 137: *pos = SVR4_INTERP_ADDR;
! 138: if (*os == OOS_NULL)
! 139: *os = OOS_SVR4;
! 140: return (0);
! 141: }
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