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root/usr/server/exec/exec_script.c

DEFINITIONS

1. script_load
2. script_probe
3. script_init

   1 /*
   2  * Copyright (c) 2009, Kohsuke Ohtani
   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  * 3. Neither the name of the author nor the names of any co-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 AUTHOR 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  */
  30 /*
  31  * exec_script.c - Script file loader
  32  */
  34 #include <sys/prex.h>
  35 #include <ipc/fs.h>
  36 #include <ipc/proc.h>
  37 #include <sys/param.h>
  39 #include <string.h>
  40 #include <limits.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <errno.h>
  45 #include "exec.h"
  47 static char interp[PATH_MAX];           /* interpreter name */
  48 static char intarg[LINE_MAX];           /* argument to interpreter */
  49 static char script[LINE_MAX];           /* script name */
  51 /*
  52  * Load script file
  53  */
  54 int
script_load(struct exec *exec)
  56 {
  58         return 0;
  59 }
  61 /*
  62  * Probe script file
  63  */
  64 int
script_probe(struct exec *exec)
  66 {
  67         char *hdrstr = exec->header;
  68         char *p, *name;
  70         /* Check magic header */
  71         if ((hdrstr[0] != '#') || (hdrstr[1] != '!'))
  72                 return PROBE_ERROR;
  74         /* Strip spaces before the interpriter name */
  75         for (p = hdrstr + 2; *p == ' ' || *p == '\t'; p++)
  76                 ;
  77         if (*p == '\0')
  78                 return PROBE_ERROR;
DPRINTF(("script_probe: found\n"));
  82         /* Pick up interpreter name */
name = p;
  84         for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
  85                 ;
  86         *p++ = '\0';
  88         if (!strncmp(name, "/bin/sh", PATH_MAX)) {
strlcpy(interp, "/boot/cmdbox", sizeof(interp));
strlcpy(intarg, "sh", sizeof(intarg));
exec->xarg1 = intarg;
exec->xarg2 = script;
  93         } else {
strlcpy(interp, name, sizeof(interp));
exec->xarg1 = intarg;
exec->xarg2 = NULL;
  97         }
strlcpy(script, exec->path, sizeof(script));
exec->path = interp;
DPRINTF(("script_probe: interpreter=%s arg=%s script=%s\n",
interp, intarg, script));
 104         return PROBE_INDIRECT;
 105 }
 107 void
script_init(void)
 109 {
 110 }