imgact.h revision 283359 
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/10/sys/sys/imgact.h 283359 2015-05-24 07:32:02Z 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
41struct 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
54struct 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#define IMGACT_SHELL	0x1
65#define IMGACT_BINMISC	0x2
66	unsigned char interpreted;	/* mask of interpreters that have run */
67	char opened;		/* flag - we have opened executable vnode */
68	char *interpreter_name;	/* name of the interpreter */
69	void *auxargs;		/* ELF Auxinfo structure pointer */
70	struct sf_buf *firstpage;	/* first page that we mapped */
71	unsigned long ps_strings; /* PS_STRINGS for BSD/OS binaries */
72	size_t auxarg_size;
73	struct image_args *args;	/* system call arguments */
74	struct sysentvec *sysent;	/* system entry vector */
75	char *execpath;
76	unsigned long execpathp;
77	char *freepath;
78	unsigned long canary;
79	int canarylen;
80	unsigned long pagesizes;
81	int pagesizeslen;
82	vm_prot_t stack_prot;
83	u_long stack_sz;
84};
85
86#ifdef _KERNEL
87struct sysentvec;
88struct thread;
89struct vmspace;
90
91#define IMGACT_CORE_COMPRESS	0x01
92
93int	exec_alloc_args(struct image_args *);
94int	exec_check_permissions(struct image_params *);
95register_t *exec_copyout_strings(struct image_params *);
96void	exec_free_args(struct image_args *);
97int	exec_new_vmspace(struct image_params *, struct sysentvec *);
98void	exec_setregs(struct thread *, struct image_params *, u_long);
99int	exec_shell_imgact(struct image_params *);
100int	exec_copyin_args(struct image_args *, char *, enum uio_seg,
101	char **, char **);
102int	pre_execve(struct thread *td, struct vmspace **oldvmspace);
103void	post_execve(struct thread *td, int error, struct vmspace *oldvmspace);
104#endif
105
106#endif /* !_SYS_IMGACT_H_ */
107