Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/sys/exec.h

286 lines
12 KiB
C
Raw Blame History

/* $NetBSD: exec.h,v 1.105 2004/05/01 22:42:51 christos Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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.
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)exec.h 8.4 (Berkeley) 2/19/95
*/
/*-
* Copyright (c) 1993 Theo de Raadt. All rights reserved.
*
* 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.
* 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.
*
* 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.
*/
/*-
* Copyright (c) 1994 Christopher G. Demetriou
*
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)exec.h 8.4 (Berkeley) 2/19/95
*/
#ifndef _SYS_EXEC_H_
#define _SYS_EXEC_H_
/*
* The following structure is found at the top of the user stack of each
* user process. The ps program uses it to locate argv and environment
* strings. Programs that wish ps to display other information may modify
* it; normally ps_argvstr points to argv[0], and ps_nargvstr is the same
* as the program's argc. The fields ps_envstr and ps_nenvstr are the
* equivalent for the environment.
*/
struct ps_strings {
char **ps_argvstr; /* first of 0 or more argument strings */
int ps_nargvstr; /* the number of argument strings */
char **ps_envstr; /* first of 0 or more environment strings */
int ps_nenvstr; /* the number of environment strings */
};
/*
* Below the ps_strings and sigtramp, we may require a gap on the stack
* (used to copyin/copyout various emulation data structures).
*/
#define STACKGAPLEN 4096 /* plenty enough for now */
/*
* the following structures allow execve() to put together processes
* in a more extensible and cleaner way.
*
* the exec_package struct defines an executable being execve()'d.
* it contains the header, the vmspace-building commands, the vnode
* information, and the arguments associated with the newly-execve'd
* process.
*
* the exec_vmcmd struct defines a command description to be used
* in creating the new process's vmspace.
*/
struct lwp;
struct proc;
struct exec_package;
struct vnode;
struct ucred;
typedef int (*exec_makecmds_fcn) __P((struct proc *, struct exec_package *));
struct execsw {
u_int es_hdrsz; /* size of header for this format */
exec_makecmds_fcn es_makecmds; /* function to setup vmcmds */
union { /* probe function */
int (*elf_probe_func) __P((struct proc *,
struct exec_package *, void *, char *, vaddr_t *));
int (*ecoff_probe_func) __P((struct proc *,
struct exec_package *));
int (*mach_probe_func) __P((char **));
} u;
const struct emul *es_emul; /* os emulation */
int es_prio; /* entry priority */
int es_arglen; /* Extra argument size in words */
/* Copy arguments on the new stack */
int (*es_copyargs) __P((struct proc *, struct exec_package *,
struct ps_strings *, char **, void *));
/* Set registers before execution */
void (*es_setregs) __P((struct lwp *, struct exec_package *,
u_long));
/* Dump core */
int (*es_coredump) __P((struct lwp *, struct vnode *,
struct ucred *));
int (*es_setup_stack) __P((struct proc *, struct exec_package *));
};
#define EXECSW_PRIO_ANY 0x000 /* default, no preference */
#define EXECSW_PRIO_FIRST 0x001 /* this should be among first */
#define EXECSW_PRIO_LAST 0x002 /* this should be among last */
/* exec vmspace-creation command set; see below */
struct exec_vmcmd_set {
u_int evs_cnt;
u_int evs_used;
struct exec_vmcmd *evs_cmds;
};
#define EXEC_DEFAULT_VMCMD_SETSIZE 9 /* # of cmds in set to start */
struct exec_package {
const char *ep_name; /* file's name */
void *ep_hdr; /* file's exec header */
u_int ep_hdrlen; /* length of ep_hdr */
u_int ep_hdrvalid; /* bytes of ep_hdr that are valid */
struct nameidata *ep_ndp; /* namei data pointer for lookups */
struct exec_vmcmd_set ep_vmcmds; /* vmcmds used to build vmspace */
struct vnode *ep_vp; /* executable's vnode */
struct vattr *ep_vap; /* executable's attributes */
u_long ep_taddr; /* process's text address */
u_long ep_tsize; /* size of process's text */
u_long ep_daddr; /* process's data(+bss) address */
u_long ep_dsize; /* size of process's data(+bss) */
u_long ep_maxsaddr; /* proc's max stack addr ("top") */
u_long ep_minsaddr; /* proc's min stack addr ("bottom") */
u_long ep_ssize; /* size of process's stack */
u_long ep_entry; /* process's entry point */
vaddr_t ep_vm_minaddr; /* bottom of process address space */
vaddr_t ep_vm_maxaddr; /* top of process address space */
u_int ep_flags; /* flags; see below. */
char **ep_fa; /* a fake args vector for scripts */
int ep_fd; /* a file descriptor we're holding */
void *ep_emul_arg; /* emulation argument */
const struct execsw *ep_es; /* appropriate execsw entry */
const struct execsw *ep_esch;/* checked execsw entry */
};
#define EXEC_INDIR 0x0001 /* script handling already done */
#define EXEC_HASFD 0x0002 /* holding a shell script */
#define EXEC_HASARGL 0x0004 /* has fake args vector */
#define EXEC_SKIPARG 0x0008 /* don't copy user-supplied argv[0] */
#define EXEC_DESTR 0x0010 /* destructive ops performed */
#define EXEC_32 0x0020 /* 32-bit binary emulation */
#define EXEC_HASES 0x0040 /* don't update exec switch pointer */
struct exec_vmcmd {
int (*ev_proc) __P((struct proc *, struct exec_vmcmd *));
/* procedure to run for region of vmspace */
u_long ev_len; /* length of the segment to map */
u_long ev_addr; /* address in the vmspace to place it at */
struct vnode *ev_vp; /* vnode pointer for the file w/the data */
u_long ev_offset; /* offset in the file for the data */
u_int ev_prot; /* protections for segment */
int ev_flags;
#define VMCMD_RELATIVE 0x0001 /* ev_addr is relative to base entry */
#define VMCMD_BASE 0x0002 /* marks a base entry */
#define VMCMD_FIXED 0x0004 /* entry must be mapped at ev_addr */
};
#ifdef _KERNEL
#include <sys/mallocvar.h>
MALLOC_DECLARE(M_EXEC);
/*
* funtions used either by execve() or the various CPU-dependent execve()
* hooks.
*/
void kill_vmcmd __P((struct exec_vmcmd **));
int exec_makecmds __P((struct proc *, struct exec_package *));
int exec_runcmds __P((struct proc *, struct exec_package *));
void vmcmdset_extend __P((struct exec_vmcmd_set *));
void kill_vmcmds __P((struct exec_vmcmd_set *));
int vmcmd_map_pagedvn __P((struct proc *, struct exec_vmcmd *));
int vmcmd_map_readvn __P((struct proc *, struct exec_vmcmd *));
int vmcmd_readvn __P((struct proc *, struct exec_vmcmd *));
int vmcmd_map_zero __P((struct proc *, struct exec_vmcmd *));
int copyargs __P((struct proc *, struct exec_package *,
struct ps_strings *, char **, void *));
void setregs __P((struct lwp *, struct exec_package *,
u_long));
#ifdef VERIFIED_EXEC
int check_veriexec __P((struct proc *, struct vnode *,
struct exec_package *, int));
int check_exec __P((struct proc *, struct exec_package *,
int));
#else
int check_exec __P((struct proc *, struct exec_package *));
#endif
int exec_init __P((int));
int exec_read_from __P((struct proc *, struct vnode *, u_long off,
void *, size_t));
int exec_setup_stack __P((struct proc *, struct exec_package *));
#ifdef LKM
int emul_register __P((const struct emul *, int));
int emul_unregister __P((const char *));
const struct emul *emul_search __P((const char *));
int exec_add __P((struct execsw *, const char *));
int exec_remove __P((const struct execsw *));
#endif /* LKM */
void new_vmcmd __P((struct exec_vmcmd_set *,
int (*) __P((struct proc *, struct exec_vmcmd *)),
u_long, u_long, struct vnode *, u_long, u_int, int));
#define NEW_VMCMD(evsp,proc,len,addr,vp,offset,prot) \
new_vmcmd(evsp,proc,len,addr,vp,offset,prot,0)
#define NEW_VMCMD2(evsp,proc,len,addr,vp,offset,prot,flags) \
new_vmcmd(evsp,proc,len,addr,vp,offset,prot,flags)
#endif /* _KERNEL */
#include <sys/exec_aout.h>
#endif /* !_SYS_EXEC_H_ */
Reference in New Issue View Git Blame Copy Permalink