114 lines
4.4 KiB
C
114 lines
4.4 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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* 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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#include <sys/uio.h>
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#include <vm/vm.h>
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#define MAXSHELLCMDLEN PAGE_SIZE
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struct ucred;
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struct image_args {
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char *buf; /* pointer to string buffer */
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char *begin_argv; /* beginning of argv in buf */
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char *begin_envv; /* beginning of envv in buf */
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char *endp; /* current `end' pointer of arg & env strings */
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char *fname; /* pointer to filename of executable (system space) */
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char *fname_buf; /* pointer to optional malloc(M_TEMP) buffer */
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int stringspace; /* space left in arg & env buffer */
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int argc; /* count of argument strings */
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int envc; /* count of environment strings */
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int fd; /* file descriptor of the executable */
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struct filedesc *fdp; /* new file descriptor table */
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};
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struct image_params {
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struct proc *proc; /* our process struct */
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struct label *execlabel; /* optional exec label */
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struct vnode *vp; /* pointer to vnode of file to exec */
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struct vm_object *object; /* The vm object for this vp */
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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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unsigned long entry_addr; /* entry address of target executable */
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unsigned long reloc_base; /* load address of image */
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char vmspace_destroyed; /* flag - we've blown away original vm space */
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#define IMGACT_SHELL 0x1
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#define IMGACT_BINMISC 0x2
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unsigned char interpreted; /* mask of interpreters that have run */
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char opened; /* flag - we have opened executable vnode */
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char *interpreter_name; /* name of the interpreter */
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void *auxargs; /* ELF Auxinfo structure pointer */
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struct sf_buf *firstpage; /* first page that we mapped */
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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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struct image_args *args; /* system call arguments */
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struct sysentvec *sysent; /* system entry vector */
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char *execpath;
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unsigned long execpathp;
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char *freepath;
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unsigned long canary;
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int canarylen;
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unsigned long pagesizes;
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int pagesizeslen;
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vm_prot_t stack_prot;
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u_long stack_sz;
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struct ucred *newcred; /* new credentials if changing */
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bool credential_setid; /* true if becoming setid */
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};
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#ifdef _KERNEL
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struct sysentvec;
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struct thread;
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struct vmspace;
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#define IMGACT_CORE_COMPRESS 0x01
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int exec_alloc_args(struct image_args *);
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int exec_check_permissions(struct image_params *);
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register_t *exec_copyout_strings(struct image_params *);
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void exec_free_args(struct image_args *);
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int exec_new_vmspace(struct image_params *, struct sysentvec *);
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void exec_setregs(struct thread *, struct image_params *, u_long);
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int exec_shell_imgact(struct image_params *);
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int exec_copyin_args(struct image_args *, char *, enum uio_seg,
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char **, char **);
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int exec_copyin_data_fds(struct thread *, struct image_args *, const void *,
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size_t, const int *, size_t);
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int pre_execve(struct thread *td, struct vmspace **oldvmspace);
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void post_execve(struct thread *td, int error, struct vmspace *oldvmspace);
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#endif
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#endif /* !_SYS_IMGACT_H_ */
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