Rename aout_imgact.c and shell_imgact.c to imgact_* for consistency.
This commit is contained in:
Garrett Wollman
parent
a1f4319f4a
commit
cfefd68703
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=885
181
sys/kern/imgact_aout.c
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181
sys/kern/imgact_aout.c
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/*
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* Copyright (c) 1993, David Greenman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by David Greenman
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* 4. The name of the developer may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: aout_imgact.c,v 1.2 1993/12/19 00:51:14 wollman Exp $
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*/
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#include "param.h"
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#include "systm.h"
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#include "resourcevar.h"
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#include "exec.h"
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#include "mman.h"
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#include "imgact.h"
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#include "vm/vm.h"
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int
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exec_aout_imgact(iparams)
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struct image_params *iparams;
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{
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struct exec *a_out = (struct exec *) iparams->image_header;
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struct vmspace *vmspace = iparams->proc->p_vmspace;
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unsigned long vmaddr, virtual_offset, file_offset;
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unsigned long bss_size;
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int error, len;
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/*
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* Set file/virtual offset based on a.out variant.
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* We do two cases: host byte order and network byte order
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* (for NetBSD compatibility)
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*/
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switch ((int)(a_out->a_magic & 0xffff)) {
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case ZMAGIC:
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virtual_offset = 0;
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if (a_out->a_text) {
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file_offset = NBPG;
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} else {
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/* Bill's "screwball mode" */
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file_offset = 0;
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}
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break;
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case QMAGIC:
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virtual_offset = NBPG;
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file_offset = 0;
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break;
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default:
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/* NetBSD compatibility */
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switch ((int)(ntohl(a_out->a_magic) & 0xffff)) {
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case ZMAGIC:
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case QMAGIC:
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virtual_offset = NBPG;
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file_offset = 0;
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break;
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default:
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return (-1);
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}
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}
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bss_size = roundup(a_out->a_bss, NBPG);
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/*
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* Check various fields in header for validity/bounds.
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*/
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if (/* entry point must lay with text region */
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a_out->a_entry < virtual_offset ||
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a_out->a_entry >= virtual_offset + a_out->a_text ||
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/* text and data size must each be page rounded */
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a_out->a_text % NBPG ||
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a_out->a_data % NBPG)
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return (-1);
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/* text + data can't exceed file size */
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if (a_out->a_data + a_out->a_text > iparams->attr->va_size)
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return (EFAULT);
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/*
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* text/data/bss must not exceed limits
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*/
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if (/* text can't exceed maximum text size */
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a_out->a_text > MAXTSIZ ||
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/* data + bss can't exceed maximum data size */
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a_out->a_data + bss_size > MAXDSIZ ||
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/* data + bss can't exceed rlimit */
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a_out->a_data + bss_size >
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iparams->proc->p_rlimit[RLIMIT_DATA].rlim_cur)
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return (ENOMEM);
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/* copy in arguments and/or environment from old process */
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error = exec_extract_strings(iparams);
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if (error)
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return (error);
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/*
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* Destroy old process VM and create a new one (with a new stack)
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*/
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exec_new_vmspace(iparams);
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/*
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* Map text read/execute
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*/
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vmaddr = virtual_offset;
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error =
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vm_mmap(&vmspace->vm_map, /* map */
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&vmaddr, /* address */
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a_out->a_text, /* size */
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VM_PROT_READ | VM_PROT_EXECUTE, /* protection */
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VM_PROT_READ | VM_PROT_EXECUTE, /* max protection */
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MAP_FILE | MAP_PRIVATE | MAP_FIXED, /* flags */
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iparams->vnodep, /* vnode */
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file_offset); /* offset */
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if (error)
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return (error);
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/*
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* Map data read/write (if text is 0, assume text is in data area
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* [Bill's screwball mode])
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*/
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vmaddr = virtual_offset + a_out->a_text;
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error =
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vm_mmap(&vmspace->vm_map,
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&vmaddr,
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a_out->a_data,
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VM_PROT_READ | VM_PROT_WRITE | (a_out->a_text ? 0 : VM_PROT_EXECUTE),
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VM_PROT_READ | VM_PROT_WRITE | (a_out->a_text ? 0 : VM_PROT_EXECUTE),
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MAP_FILE | MAP_PRIVATE | MAP_FIXED,
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iparams->vnodep,
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file_offset + a_out->a_text);
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if (error)
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return (error);
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/*
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* Allocate demand-zeroed area for uninitialized data
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* "bss" = 'block started by symbol' - named after the IBM 7090
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* instruction of the same name.
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*/
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vmaddr = virtual_offset + a_out->a_text + a_out->a_data;
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error = vm_allocate(&vmspace->vm_map, &vmaddr, bss_size, FALSE);
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if (error)
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return (error);
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/* Fill in process VM information */
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vmspace->vm_tsize = a_out->a_text >> PAGE_SHIFT;
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vmspace->vm_dsize = (a_out->a_data + bss_size) >> PAGE_SHIFT;
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vmspace->vm_taddr = (caddr_t) virtual_offset;
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vmspace->vm_daddr = (caddr_t) virtual_offset + a_out->a_text;
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/* Fill in image_params */
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iparams->interpreted = 0;
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iparams->entry_addr = a_out->a_entry;
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return (0);
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}
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129
sys/kern/imgact_shell.c
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129
sys/kern/imgact_shell.c
Normal file
@ -0,0 +1,129 @@
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/*
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* Copyright (c) 1993, David Greenman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by David Greenman
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* 4. The name of the developer may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: shell_imgact.c,v 1.1 1993/12/12 12:23:20 davidg Exp $
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*/
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#include "param.h"
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#include "systm.h"
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#include "resourcevar.h"
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#include "imgact.h"
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#define SHELLMAGIC 0x2123 /* #! */
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#define MAXSHELLCMDLEN 64
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/*
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* Shell interpreter image activator. A interpreter name beginning
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* at iparams->stringbase is the minimal successful exit requirement.
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*/
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int
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exec_shell_imgact(iparams)
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struct image_params *iparams;
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{
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const char *image_header = iparams->image_header;
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const char *ihp, *line_endp;
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int length;
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char *interp;
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char **argv;
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/* a shell script? */
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if (((short *) image_header)[0] != SHELLMAGIC)
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return(-1);
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/*
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* Don't allow a shell script to be the shell for a shell
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* script. :-)
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*/
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if (iparams->interpreted)
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return(ENOEXEC);
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iparams->interpreted = 1;
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/*
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* Copy shell name and arguments from image_header into string
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* buffer.
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*/
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/*
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* Find end of line; return if the line > MAXSHELLCMDLEN long.
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*/
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for (ihp = &image_header[2]; *ihp != '\n'; ++ihp) {
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if (ihp >= &image_header[MAXSHELLCMDLEN])
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return(ENOEXEC);
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}
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line_endp = ihp;
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/* reset for another pass */
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ihp = &image_header[2];
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/* Skip over leading spaces - until the interpreter name */
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while ((*ihp == ' ') || (*ihp == '\t')) ihp++;
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/* copy the interpreter name */
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interp = iparams->interpreter_name;
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while ((ihp < line_endp) && (*ihp != ' ') && (*ihp != '\t'))
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*interp++ = *ihp++;
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*interp = '\0';
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/* Disallow a null interpreter filename */
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if (*iparams->interpreter_name == '\0')
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return(ENOEXEC);
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/* reset for another pass */
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ihp = &image_header[2];
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/* copy the interpreter name and arguments */
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while (ihp < line_endp) {
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/* Skip over leading spaces */
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while ((*ihp == ' ') || (*ihp == '\t')) ihp++;
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if (ihp < line_endp) {
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/*
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* Copy to end of token. No need to watch stringspace
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* because this is at the front of the string buffer
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* and the maximum shell command length is tiny.
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*/
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while ((ihp < line_endp) && (*ihp != ' ') && (*ihp != '\t')) {
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*iparams->stringp++ = *ihp++;
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iparams->stringspace--;
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}
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*iparams->stringp++ = 0;
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iparams->stringspace--;
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iparams->argc++;
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}
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}
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/* set argv[0] to point to original file name */
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suword(iparams->uap->argv, (int)iparams->uap->fname);
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return(0);
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}
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