text: /*
   * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
   * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
   * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
   * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "defs.h"
  #include <fcntl.h>
  #include <sys/stat.h>
  #include <sys/wait.h>
  #include <sys/resource.h>
  #include <sys/utsname.h>
  #include <sys/user.h>
  
  /* Bits of module.flags.  */
  
  #define MOD_UNINITIALIZED	0
  #define MOD_RUNNING		1
  #define MOD_DELETED		2
  #define MOD_AUTOCLEAN		4
  #define MOD_VISITED		8
  #define MOD_USED_ONCE		16
  #define MOD_JUST_FREED		32
  #define MOD_INITIALIZING	64
  
  /* Values for query_module's which.  */
  
  #define QM_MODULES	1
  #define QM_DEPS		2
  #define QM_REFS		3
  #define QM_SYMBOLS	4
  #define QM_INFO		5
  
  struct module_symbol
  {
  	unsigned long value;
  	const char *name;
  };
  
  struct module_info
  {
  	unsigned long addr;
  	unsigned long size;
  	unsigned long flags;
  	long usecount;
  };
  
  static const struct xlat which[] = {
  	{ 0,		"0"		},
  	{ QM_MODULES,	"QM_MODULES"	},
  	{ QM_DEPS,	"QM_DEPS"	},
  	{ QM_REFS,	"QM_REFS"	},
  	{ QM_SYMBOLS,	"QM_SYMBOLS"	},
  	{ QM_INFO,	"QM_INFO"	},
  	{ 0,		NULL		},
  };
  
  static const struct xlat modflags[] = {
  	{ MOD_UNINITIALIZED,	"MOD_UNINITIALIZED"	},
  	{ MOD_RUNNING,		"MOD_RUNNING"		},
  	{ MOD_DELETED,		"MOD_DELETED"		},
  	{ MOD_AUTOCLEAN,	"MOD_AUTOCLEAN"		},
  	{ MOD_VISITED,		"MOD_VISITED"		},
  	{ MOD_USED_ONCE,	"MOD_USED_ONCE"		},
  	{ MOD_JUST_FREED,	"MOD_JUST_FREED"	},
  	{ 0,			NULL			},
  };
  
  int
  sys_query_module(struct tcb *tcp)
  {
  	if (entering(tcp)) {
  		printstr(tcp, tcp->u_arg[0], -1);
  		tprints(", ");
  		printxval(which, tcp->u_arg[1], "QM_???");
  		tprints(", ");
  	} else {
  		size_t ret;
  
  		if (!verbose(tcp) || syserror(tcp) ||
  		    umove(tcp, tcp->u_arg[4], &ret) < 0) {
  			tprintf("%#lx, %lu, %#lx", tcp->u_arg[2],
  				tcp->u_arg[3], tcp->u_arg[4]);
  		} else if (tcp->u_arg[1]==QM_INFO) {
  			struct module_info	mi;
  			if (umove(tcp, tcp->u_arg[2], &mi) < 0) {
  				tprintf("%#lx, ", tcp->u_arg[2]);
  			} else {
  				tprintf("{address=%#lx, size=%lu, flags=",
  					mi.addr, mi.size);
  				printflags(modflags, mi.flags, "MOD_???");
  				tprintf(", usecount=%lu}, ", mi.usecount);
  			}
  			tprintf("%lu", (unsigned long)ret);
  		} else if ((tcp->u_arg[1]==QM_MODULES) ||
  			   (tcp->u_arg[1]==QM_DEPS) ||
  			   (tcp->u_arg[1]==QM_REFS)) {
  			tprints("{");
  			if (!abbrev(tcp)) {
  				char*	data	= malloc(tcp->u_arg[3]);
  				char*	mod	= data;
  				size_t	idx;
  
  				if (!data) {
  					fprintf(stderr, "out of memory\n");
  					tprintf(" /* %lu entries */ ", (unsigned long)ret);
  				} else {
  					if (umoven(tcp, tcp->u_arg[2],
  						tcp->u_arg[3], data) < 0) {
  						tprintf(" /* %lu entries */ ", (unsigned long)ret);
  					} else {
  						for (idx = 0; idx < ret; idx++) {
  							tprintf("%s%s",
  								(idx ? ", " : ""),
  								mod);
  							mod += strlen(mod)+1;
  						}
  					}
  					free(data);
  				}
  			} else
  				tprintf(" /* %lu entries */ ", (unsigned long)ret);
  			tprintf("}, %lu", (unsigned long)ret);
  		} else if (tcp->u_arg[1]==QM_SYMBOLS) {
  			tprints("{");
  			if (!abbrev(tcp)) {
  				char*			data	= malloc(tcp->u_arg[3]);
  				struct module_symbol*	sym	= (struct module_symbol*)data;
  				size_t			idx;
  
  				if (!data) {
  					fprintf(stderr, "out of memory\n");
  					tprintf(" /* %lu entries */ ", (unsigned long)ret);
  				} else {
  					if (umoven(tcp, tcp->u_arg[2],
  						tcp->u_arg[3], data) < 0) {
  						tprintf(" /* %lu entries */ ", (unsigned long)ret);
  					} else {
  						for (idx = 0; idx < ret; idx++) {
  							tprintf("%s{name=%s, value=%lu}",
  								(idx ? " " : ""),
  								data+(long)sym->name,
  								sym->value);
  							sym++;
  						}
  					}
  					free(data);
  				}
  			} else
  				tprintf(" /* %lu entries */ ", (unsigned long)ret);
  			tprintf("}, %ld", (unsigned long)ret);
  		} else {
  			printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
  			tprintf(", %#lx", tcp->u_arg[4]);
  		}
  	}
  	return 0;
  }
  
  int
  sys_create_module(struct tcb *tcp)
  {
  	if (entering(tcp)) {
  		printpath(tcp, tcp->u_arg[0]);
  		tprintf(", %lu", tcp->u_arg[1]);
  	}
  	return RVAL_HEX;
  }
  
  int
  sys_init_module(struct tcb *tcp)
  {
  	if (entering(tcp)) {
  		tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
  		printstr(tcp, tcp->u_arg[2], -1);
  	}
  	return 0;
  }
  