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a5f75648d8
exceeds MAXSHELLCMDLEN to avoid secondary /bin/sh execution. Update execve man page to reflect change. Increase MAXSHELLCMDLEN to a slightly more meaningful value. PR: kern/32106 Submitted by: b@etek.chalmers.se Reviewed by: bsd MFC after: 2 weeks
72 lines
3.3 KiB
C
72 lines
3.3 KiB
C
/*-
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* Copyright (c) 1993, David Greenman
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_IMGACT_H_
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#define _SYS_IMGACT_H_
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#define MAXSHELLCMDLEN 128
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struct image_params {
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struct proc *proc; /* our process struct */
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struct execve_args *uap; /* syscall arguments */
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struct vnode *vp; /* pointer to vnode of file to exec */
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struct vattr *attr; /* attributes of file */
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const char *image_header; /* head of file to exec */
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char *stringbase; /* base address of tmp string storage */
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char *stringp; /* current 'end' pointer of tmp strings */
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char *endargs; /* end of argv vector */
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int stringspace; /* space left in tmp string storage area */
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int argc, envc; /* count of argument and environment strings */
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char *argv0; /* Replacement for argv[0] when interpreting */
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unsigned long entry_addr; /* entry address of target executable */
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char vmspace_destroyed; /* flag - we've blown away original vm space */
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char interpreted; /* flag - this executable is interpreted */
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char interpreter_name[MAXSHELLCMDLEN]; /* name of the interpreter */
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void *auxargs; /* ELF Auxinfo structure pointer */
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struct vm_page *firstpage; /* first page that we mapped */
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char *fname; /* pointer to filename of executable (user space) */
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unsigned long ps_strings; /* PS_STRINGS for BSD/OS binaries */
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size_t auxarg_size;
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};
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#ifdef _KERNEL
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int exec_check_permissions __P((struct image_params *));
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int exec_extract_strings __P((struct image_params *));
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int exec_new_vmspace __P((struct image_params *));
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int exec_shell_imgact __P((struct image_params *));
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#endif
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#endif /* !_SYS_IMGACT_H_ */
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