The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/imgact.h

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    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  * $FreeBSD$
   30  */
   31 
   32 #ifndef _SYS_IMGACT_H_
   33 #define _SYS_IMGACT_H_
   34 
   35 #define MAXSHELLCMDLEN  128
   36 
   37 struct image_params {
   38         struct proc *proc;      /* our process struct */
   39         char **userspace_argv;  /* system call argument */
   40         char **userspace_envv;  /* system call argument */
   41         struct label *execlabel;        /* optional exec label */
   42         struct vnode *vp;       /* pointer to vnode of file to exec */
   43         struct vm_object *object;       /* The vm object for this vp */
   44         struct vattr *attr;     /* attributes of file */
   45         const char *image_header; /* head of file to exec */
   46         char *stringbase;       /* base address of tmp string storage */
   47         char *stringp;          /* current 'end' pointer of tmp strings */
   48         char *endargs;          /* end of argv vector */
   49         int stringspace;        /* space left in tmp string storage area */
   50         int argc, envc;         /* count of argument and environment strings */
   51         char *argv0;            /* Replacement for argv[0] when interpreting */
   52         unsigned long entry_addr; /* entry address of target executable */
   53         char vmspace_destroyed; /* flag - we've blown away original vm space */
   54         char interpreted;       /* flag - this executable is interpreted */
   55         char interpreter_name[MAXSHELLCMDLEN]; /* name of the interpreter */
   56         void *auxargs;          /* ELF Auxinfo structure pointer */
   57         struct sf_buf *firstpage;       /* first page that we mapped */
   58         char *fname;            /* pointer to filename of executable (user space) */
   59         unsigned long ps_strings; /* PS_STRINGS for BSD/OS binaries */
   60         size_t auxarg_size;
   61 };
   62 
   63 #ifdef _KERNEL
   64 struct sysentvec;
   65 struct thread;
   66 
   67 int     exec_check_permissions(struct image_params *);
   68 register_t *exec_copyout_strings(struct image_params *);
   69 int     exec_extract_strings(struct image_params *);
   70 int     exec_new_vmspace(struct image_params *, struct sysentvec *);
   71 void    exec_setregs(struct thread *, u_long, u_long, u_long);
   72 int     exec_shell_imgact(struct image_params *);
   73 #endif
   74 
   75 #endif /* !_SYS_IMGACT_H_ */

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