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Diffstat (limited to 'usr/src/uts/common/sys/exec.h')
| -rw-r--r-- | usr/src/uts/common/sys/exec.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/exec.h b/usr/src/uts/common/sys/exec.h new file mode 100644 index 0000000000..5196bee9ed --- /dev/null +++ b/usr/src/uts/common/sys/exec.h @@ -0,0 +1,244 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2004 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ +/* All Rights Reserved */ + + +#ifndef _SYS_EXEC_H +#define _SYS_EXEC_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/systm.h> +#include <vm/seg.h> +#include <vm/seg_vn.h> +#include <sys/model.h> +#include <sys/uio.h> +#include <sys/corectl.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Number of bytes to read for magic string + */ +#define MAGIC_BYTES 8 + +#define getexmag(x) (((x)[0] << 8) + (x)[1]) + +typedef struct execa { + const char *fname; + const char **argp; + const char **envp; +} execa_t; + +typedef struct execenv { + caddr_t ex_bssbase; + caddr_t ex_brkbase; + size_t ex_brksize; + vnode_t *ex_vp; + short ex_magic; +} execenv_t; + +#ifdef _KERNEL + +#define LOADABLE_EXEC(e) ((e)->exec_lock) +#define LOADED_EXEC(e) ((e)->exec_func) + +extern int nexectype; /* number of elements in execsw */ +extern struct execsw execsw[]; +extern kmutex_t execsw_lock; + +/* + * User argument structure for passing exec information around between the + * common and machine-dependent portions of exec and the exec modules. + */ +typedef struct uarg { + ssize_t na; + ssize_t ne; + ssize_t nc; + ssize_t arglen; + char *fname; + char *pathname; + ssize_t auxsize; + caddr_t stackend; + size_t stk_align; + size_t stk_size; + char *stk_base; + char *stk_strp; + int *stk_offp; + size_t usrstack_size; + uint_t stk_prot; + uint_t dat_prot; + int traceinval; + model_t to_model; + model_t from_model; + size_t to_ptrsize; + size_t from_ptrsize; + size_t ncargs; + struct execsw *execswp; + uint_t stkpageszc; + uint_t brkpageszc; + uintptr_t entry; + uintptr_t thrptr; +} uarg_t; + +/* + * The following macro is a machine dependent encapsulation of + * postfix processing to hide the stack direction from elf.c + * thereby making the elf.c code machine independent. + */ +#define execpoststack(ARGS, ARRAYADDR, BYTESIZE) \ + (copyout((caddr_t)(ARRAYADDR), (ARGS)->stackend, (BYTESIZE)) ? EFAULT \ + : (((ARGS)->stackend += (BYTESIZE)), 0)) + +/* + * This provides the current user stack address for an object of size BYTESIZE. + * Used to determine the stack address just before applying execpoststack(). + */ +#define stackaddress(ARGS, BYTESIZE) ((ARGS)->stackend) + +/* + * Macro to add attribute/values the aux vector under construction. + */ +/* BEGIN CSTYLED */ +#if ((_LONG_ALIGNMENT == (2 * _INT_ALIGNMENT)) || \ + (_POINTER_ALIGNMENT == (2 * _INT_ALIGNMENT))) +/* END CSTYLED */ +/* + * This convoluted stuff is necessitated by the fact that there is + * potential padding in the aux vector, but not necessarily and + * without clearing the padding there is a small, but potential + * security hole. + */ +#define ADDAUX(p, a, v) { \ + (&(p)->a_type)[1] = 0; \ + (p)->a_type = (a); \ + (p)->a_un.a_val = (v); \ + ++(p); \ + } +#else +#define ADDAUX(p, a, v) { \ + (p)->a_type = (a); \ + ((p)++)->a_un.a_val = (v); \ + } +#endif + +#define INTPSZ MAXPATHLEN +typedef struct intpdata { + char *intp; + char *intp_name; + char *intp_arg; +} intpdata_t; + +struct execsw { + char *exec_magic; + int exec_magoff; + int exec_maglen; + int (*exec_func)(struct vnode *vp, struct execa *uap, + struct uarg *args, struct intpdata *idata, int level, + long *execsz, int setid, caddr_t exec_file, + struct cred *cred); + int (*exec_core)(struct vnode *vp, struct proc *p, + struct cred *cred, rlim64_t rlimit, int sig, + core_content_t content); + krwlock_t *exec_lock; +}; + +extern short elfmagic; +extern short intpmagic; +extern short javamagic; +#if defined(__sparc) +extern short aout_zmagic; +extern short aout_nmagic; +extern short aout_omagic; +#endif +extern short nomagic; + +extern char elf32magicstr[]; +extern char elf64magicstr[]; +extern char intpmagicstr[]; +extern char javamagicstr[]; +#if defined(__sparc) +extern char aout_nmagicstr[]; +extern char aout_zmagicstr[]; +extern char aout_omagicstr[]; +#endif +extern char nomagicstr[]; + +extern int exec_args(execa_t *, uarg_t *, intpdata_t *, void **); +extern int exec(const char *fname, const char **argp); +extern int exece(const char *fname, const char **argp, const char **envp); +extern int exec_common(const char *fname, const char **argp, + const char **envp); +extern int gexec(vnode_t **vp, struct execa *uap, struct uarg *args, + struct intpdata *idata, int level, long *execsz, caddr_t exec_file, + struct cred *cred); +extern struct execsw *allocate_execsw(char *name, char *magic, + size_t magic_size); +extern struct execsw *findexecsw(char *magic); +extern struct execsw *findexec_by_hdr(char *header); +extern struct execsw *findexec_by_magic(char *magic); +extern int execpermissions(struct vnode *vp, struct vattr *vattrp, + struct uarg *args); +extern int execmap(vnode_t *vp, caddr_t addr, size_t len, size_t zfodlen, + off_t offset, int prot, int page, uint_t); +extern void setexecenv(struct execenv *ep); +extern int execopen(struct vnode **vpp, int *fdp); +extern int execclose(int fd); +extern void setregs(uarg_t *); +extern void exec_set_sp(size_t); + +/* + * Utility functions for exec module core routines: + */ +extern int core_seg(proc_t *, vnode_t *, offset_t, caddr_t, + size_t, rlim64_t, cred_t *); + +extern int core_write(vnode_t *, enum uio_seg, offset_t, + const void *, size_t, rlim64_t, cred_t *); + +/* a.out stuff */ + +struct exec; + +extern caddr_t gettmem(struct exec *exp); +extern caddr_t getdmem(struct exec *exp); +extern ulong_t getdfile(struct exec *exp); +extern uint_t gettfile(struct exec *exp); +extern int chkaout(struct exdata *exp); +extern void getexinfo(struct exdata *edp_in, struct exdata *edp_out, + int *pagetext, int *pagedata); + +#endif /* _KERNEL */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_EXEC_H */ |