107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/*
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* Copyright (c) 1986 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef _SYS_EXEC_H_
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#define _SYS_EXEC_H_
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#ifdef KERNEL
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#ifdef EXEC_SCRIPT
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#define SHSIZE 64
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#define SHPATHLEN 64
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#endif
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#ifdef EXEC_ELF
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#define STRLEN 32
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#endif
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#ifdef EXEC_AOUT
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#include "exec_aout.h"
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#endif
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#ifdef EXEC_ELF
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#include "exec_elf.h"
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#endif
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#define NO_ADDR ((caddr_t)(~0U)) /* Indicates addr. not yet filled in */
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struct memsect {
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caddr_t vaddr;
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unsigned len;
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};
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struct exec_params {
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char *userfname; /* The arguments to the exec() call */
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char **userargp;
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char **userenvp;
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union {
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#ifdef EXEC_SCRIPT
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char sh[SHSIZE];
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#endif
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#ifdef EXEC_AOUT
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struct exec aout;
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#endif
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#ifdef EXEC_ELF
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struct elf_ehdr elf;
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#endif
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} hdr; /* head of file to exec */
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int hdr_len; /* number of bytes valid in image_header */
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char **argp, **envp;
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u_short argc, envc; /* count of argument and environment strings */
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u_short argbc, envbc; /* total number of chars in argc and envc string pool */
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union {
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#ifdef EXEC_SCRIPT
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struct {
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char interpname[20]; /* real name of the script interpreter */
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char interparg[SHPATHLEN]; /* interpreter arg */
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char interpreted; /* flag - this executable is interpreted */
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} sh;
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#endif
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#ifdef EXEC_ELF
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struct {
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struct buf *stbp; /* String table buffer pointer */
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int stbpos; /* String table pos in buffer */
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int stsize; /* String table size */
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int stoffset; /* String table file pos */
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char str[STRLEN];
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} elf;
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#endif
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#ifdef EXEC_AOUT
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struct {
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} aout;
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#endif
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};
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gid_t gid;
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uid_t uid;
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#define MAXALLOCBUF 6
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struct {
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struct buf *bp; /* Memory allocator buffer */
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u_short fill; /* Memory allocator "free" pointer */
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} alloc[MAXALLOCBUF];
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u_long ep_taddr, ep_tsize, ep_daddr, ep_dsize;
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struct inode *ip; /* executable file ip */
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struct memsect text, data, bss, heap, stack;
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};
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struct execsw {
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int (*es_check)(struct exec_params *epp);
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const char* es_name;
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};
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extern const struct execsw execsw[];
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extern int nexecs, exec_maxhdrsz;
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struct buf *exec_copy_args(char **argp, struct exec_params *epp, int isargv, int *argc, int *argbc);
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int exec_check(struct exec_params *epp);
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void exec_setupstack(unsigned entryaddr, struct exec_params *epp);
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void exec_alloc_freeall(struct exec_params *epp);
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void *exec_alloc(int size, int ru, struct exec_params *epp);
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int exec_estab(struct exec_params *epp);
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void exec_save_args(struct exec_params *epp);
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void exec_clear(struct exec_params *epp);
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#else /* KERNEL */
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#include <sys/exec_aout.h>
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#endif
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#endif
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