1 /*- 2 * Copyright (c) 1993, David Greenman 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: stable/9/sys/sys/imgact.h 217151 2011-01-08 16:13:44Z kib $ 30 */ 31 32 #ifndef _SYS_IMGACT_H_ 33 #define _SYS_IMGACT_H_ 34 35 #include <sys/uio.h> 36 37 #include <vm/vm.h> 38 39 #define MAXSHELLCMDLEN PAGE_SIZE 40 41 struct image_args { 42 char *buf; /* pointer to string buffer */ 43 char *begin_argv; /* beginning of argv in buf */ 44 char *begin_envv; /* beginning of envv in buf */ 45 char *endp; /* current `end' pointer of arg & env strings */ 46 char *fname; /* pointer to filename of executable (system space) */ 47 char *fname_buf; /* pointer to optional malloc(M_TEMP) buffer */ 48 int stringspace; /* space left in arg & env buffer */ 49 int argc; /* count of argument strings */ 50 int envc; /* count of environment strings */ 51 int fd; /* file descriptor of the executable */ 52 }; 53 54 struct image_params { 55 struct proc *proc; /* our process struct */ 56 struct label *execlabel; /* optional exec label */ 57 struct vnode *vp; /* pointer to vnode of file to exec */ 58 struct vm_object *object; /* The vm object for this vp */ 59 struct vattr *attr; /* attributes of file */ 60 const char *image_header; /* head of file to exec */ 61 unsigned long entry_addr; /* entry address of target executable */ 62 unsigned long reloc_base; /* load address of image */ 63 char vmspace_destroyed; /* flag - we've blown away original vm space */ 64 char interpreted; /* flag - this executable is interpreted */ 65 char opened; /* flag - we have opened executable vnode */ 66 char *interpreter_name; /* name of the interpreter */ 67 void *auxargs; /* ELF Auxinfo structure pointer */ 68 struct sf_buf *firstpage; /* first page that we mapped */ 69 unsigned long ps_strings; /* PS_STRINGS for BSD/OS binaries */ 70 size_t auxarg_size; 71 struct image_args *args; /* system call arguments */ 72 struct sysentvec *sysent; /* system entry vector */ 73 char *execpath; 74 unsigned long execpathp; 75 char *freepath; 76 unsigned long canary; 77 int canarylen; 78 unsigned long pagesizes; 79 int pagesizeslen; 80 vm_prot_t stack_prot; 81 }; 82 83 #ifdef _KERNEL 84 struct sysentvec; 85 struct thread; 86 87 #define IMGACT_CORE_COMPRESS 0x01 88 89 int exec_alloc_args(struct image_args *); 90 int exec_check_permissions(struct image_params *); 91 register_t *exec_copyout_strings(struct image_params *); 92 void exec_free_args(struct image_args *); 93 int exec_new_vmspace(struct image_params *, struct sysentvec *); 94 void exec_setregs(struct thread *, struct image_params *, u_long); 95 int exec_shell_imgact(struct image_params *); 96 int exec_copyin_args(struct image_args *, char *, enum uio_seg, 97 char **, char **); 98 #endif 99 100 #endif /* !_SYS_IMGACT_H_ */ 101