diff options
Diffstat (limited to 'sys/svr4/imgact_svr4.c')
-rw-r--r-- | sys/svr4/imgact_svr4.c | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/sys/svr4/imgact_svr4.c b/sys/svr4/imgact_svr4.c deleted file mode 100644 index 7dc0d63..0000000 --- a/sys/svr4/imgact_svr4.c +++ /dev/null @@ -1,235 +0,0 @@ -/*- - * Copyright (c) 1998 Mark Newton - * Copyright (c) 1994-1996 Søren Schmidt - * All rights reserved. - * - * Based heavily on /sys/kern/imgact_aout.c which is: - * Copyright (c) 1993, David Greenman - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer - * in this position and unchanged. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software withough specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/resourcevar.h> -#include <sys/exec.h> -#include <sys/mman.h> -#include <sys/imgact.h> -#include <sys/imgact_aout.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/proc.h> -#include <sys/vnode.h> - -#include <vm/vm.h> -#include <vm/vm_kern.h> -#include <vm/vm_param.h> -#include <vm/pmap.h> -#include <vm/vm_map.h> -#include <vm/vm_extern.h> - -#include <svr4/svr4.h> - -static int exec_svr4_imgact __P((struct image_params *iparams)); - -static int -exec_svr4_imgact(imgp) - struct image_params *imgp; -{ - const struct exec *a_out = (const struct exec *) imgp->image_header; - struct vmspace *vmspace; - vm_offset_t vmaddr; - unsigned long virtual_offset, file_offset; - vm_offset_t buffer; - unsigned long bss_size; - int error; - - if (((a_out->a_magic >> 16) & 0xff) != 0x64) - return -1; - - /* - * Set file/virtual offset based on a.out variant. - */ - switch ((int)(a_out->a_magic & 0xffff)) { - case 0413: - virtual_offset = 0; - file_offset = 1024; - break; - case 0314: - virtual_offset = 4096; - file_offset = 0; - break; - default: - return (-1); - } - bss_size = round_page(a_out->a_bss); -#ifdef DEBUG - printf("imgact: text: %08x, data: %08x, bss: %08x\n", a_out->a_text, a_out->a_data, bss_size); -#endif - - /* - * Check various fields in header for validity/bounds. - */ - if (a_out->a_entry < virtual_offset || - a_out->a_entry >= virtual_offset + a_out->a_text || - a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) - return (-1); - - /* text + data can't exceed file size */ - if (a_out->a_data + a_out->a_text > imgp->attr->va_size) - return (EFAULT); - /* - * text/data/bss must not exceed limits - */ - if (a_out->a_text > MAXTSIZ || - a_out->a_data + bss_size > imgp->proc->p_rlimit[RLIMIT_DATA].rlim_cur) - return (ENOMEM); - - /* copy in arguments and/or environment from old process */ - error = exec_extract_strings(imgp); - if (error) - return (error); - - /* - * Destroy old process VM and create a new one (with a new stack) - */ - exec_new_vmspace(imgp); - vmspace = imgp->proc->p_vmspace; - - /* - * Check if file_offset page aligned,. - * Currently we cannot handle misalinged file offsets, - * and so we read in the entire image (what a waste). - */ - if (file_offset & PAGE_MASK) { -#ifdef DEBUG - printf("imgact: Non page aligned binary %d\n", file_offset); -#endif - /* - * Map text+data+bss read/write/execute - */ - vmaddr = virtual_offset; - error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, - a_out->a_text + a_out->a_data + bss_size, FALSE, - VM_PROT_ALL, VM_PROT_ALL, 0); - if (error) - return error; - - error = vm_mmap(kernel_map, &buffer, - round_page(a_out->a_text + a_out->a_data + file_offset), - VM_PROT_READ, VM_PROT_READ, 0, - (caddr_t) imgp->vp, trunc_page(file_offset)); - if (error) - return error; - - error = copyout((caddr_t)(buffer + file_offset), (caddr_t)vmaddr, - a_out->a_text + a_out->a_data); - - vm_map_remove(kernel_map, buffer, - buffer + round_page(a_out->a_text + a_out->a_data + file_offset)); - - if (error) - return error; - - /* - * remove write enable on the 'text' part - */ - error = vm_map_protect(&vmspace->vm_map, - vmaddr, - vmaddr + a_out->a_text, - VM_PROT_EXECUTE|VM_PROT_READ, - TRUE); - if (error) - return error; - } - else { -#ifdef DEBUG - printf("imgact: Page aligned binary %d\n", file_offset); -#endif - /* - * Map text+data read/execute - */ - vmaddr = virtual_offset; - error = vm_mmap(&vmspace->vm_map, &vmaddr, - a_out->a_text + a_out->a_data, - VM_PROT_READ | VM_PROT_EXECUTE, - VM_PROT_ALL, - MAP_PRIVATE | MAP_FIXED, - (caddr_t)imgp->vp, file_offset); - if (error) - return (error); - -#ifdef DEBUG - printf("imgact: startaddr=%08x, length=%08x\n", vmaddr, a_out->a_text + a_out->a_data); -#endif - /* - * allow read/write of data - */ - error = vm_map_protect(&vmspace->vm_map, - vmaddr + a_out->a_text, - vmaddr + a_out->a_text + a_out->a_data, - VM_PROT_ALL, - FALSE); - if (error) - return (error); - - /* - * Allocate anon demand-zeroed area for uninitialized data - */ - if (bss_size != 0) { - vmaddr = virtual_offset + a_out->a_text + a_out->a_data; - error = vm_map_find(&vmspace->vm_map, NULL, 0, &vmaddr, - bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); - if (error) - return (error); -#ifdef DEBUG - printf("imgact: bssaddr=%08x, length=%08x\n", vmaddr, bss_size); -#endif - - } - /* Indicate that this file should not be modified */ - imgp->vp->v_flag |= VTEXT; - } - /* Fill in process VM information */ - vmspace->vm_tsize = round_page(a_out->a_text) >> PAGE_SHIFT; - vmspace->vm_dsize = round_page(a_out->a_data + bss_size) >> PAGE_SHIFT; - vmspace->vm_taddr = (caddr_t)virtual_offset; - vmspace->vm_daddr = (caddr_t)virtual_offset + a_out->a_text; - - /* Fill in image_params */ - imgp->interpreted = 0; - imgp->entry_addr = a_out->a_entry; - - imgp->proc->p_sysent = &svr4_sysvec; - return (0); -} - -/* - * Tell kern_execve.c about it, with a little help from the linker. - */ -struct execsw svr4_execsw = { exec_svr4_imgact, "svr4 ELF" }; -EXEC_SET(execsw_set, svr4_execsw); - |