helper/ioutil: silence gcc-8 on strncpy
[openocd.git] / src / helper / ioutil.c
index 9de1a691cc228cba393185fb6be34bc577b9fd50..c103ce173f73c97da3afe91730a1c6a0f2622418 100644 (file)
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2007-2008 by Øyvind Harboe                              *
+ *   Copyright (C) 2007-2010 by Øyvind Harboe                              *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
@@ -12,9 +12,7 @@
  *   GNU General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 /* this file contains various functionality useful to standalone systems */
 #endif
 
 #include "log.h"
-#include "types.h"
-#include "configuration.h"
-#include "target.h"
-
-#include "command.h"
-
-#include <time_support.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <strings.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#if !BUILD_ECOSBOARD
-#include <malloc.h>
-#endif
-#include <errno.h>
+#include "time_support.h"
 
-
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <dirent.h>
-#include <netinet/tcp.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <net/if.h>
+#ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+#endif
+#ifdef HAVE_DIRENT_H
+#include <dirent.h>
+#endif
+#ifdef HAVE_NETDB_H
 #include <netdb.h>
-#include <netinet/in.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <string.h>
-
-#if !defined(__CYGWIN__)
+#endif
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_IFADDRS_H
 #include <ifaddrs.h>
 #endif
-
-#include <unistd.h>
-#include <stdio.h>
-
-int handle_rm_command(struct command_context_s *cmd_ctx, char *cmd,
-               char **args, int argc)
-{
-       if (argc != 1)
-       {
-               command_print(cmd_ctx, "rm <filename>");
-               return ERROR_INVALID_ARGUMENTS;
-       }
-
-       if (unlink(args[0]) != 0)
-       {
-               command_print(cmd_ctx, "failed: %d", errno);
-       }
-
-       return ERROR_OK;
-}
-
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
 
 /* loads a file and returns a pointer to it in memory. The file contains
  * a 0 byte(sentinel) after len bytes - the length of the file. */
-int loadFile(const char *fileName, void **data, int *len)
+static int load_file(const char *fileName, char **data, size_t *len)
 {
-       FILE * pFile;
-       pFile = fopen(fileName,"rb");
-       if (pFile==NULL)
-       {
-               LOG_ERROR("Can't open %s\n", fileName);
+       /* ensure returned length is always sane */
+       *len = 0;
+
+       FILE *pFile;
+       pFile = fopen(fileName, "rb");
+       if (pFile == NULL) {
+               LOG_ERROR("Can't open %s", fileName);
                return ERROR_FAIL;
        }
-       if (fseek(pFile, 0, SEEK_END)!=0)
-       {
-               LOG_ERROR("Can't open %s\n", fileName);
+       if (fseek(pFile, 0, SEEK_END) != 0) {
+               LOG_ERROR("Can't open %s", fileName);
                fclose(pFile);
                return ERROR_FAIL;
        }
-       *len=ftell(pFile);
-       if (*len==-1)
-       {
-               LOG_ERROR("Can't open %s\n", fileName);
+       long fsize = ftell(pFile);
+       if (fsize == -1) {
+               LOG_ERROR("Can't open %s", fileName);
                fclose(pFile);
                return ERROR_FAIL;
        }
+       *len = fsize;
 
-       if (fseek(pFile, 0, SEEK_SET)!=0)
-       {
-               LOG_ERROR("Can't open %s\n", fileName);
+       if (fseek(pFile, 0, SEEK_SET) != 0) {
+               LOG_ERROR("Can't open %s", fileName);
                fclose(pFile);
                return ERROR_FAIL;
        }
-       *data=malloc(*len+1);
-       if (*data==NULL)
-       {
-               LOG_ERROR("Can't open %s\n", fileName);
+       *data = malloc(*len + 1);
+       if (*data == NULL) {
+               LOG_ERROR("Can't open %s", fileName);
                fclose(pFile);
                return ERROR_FAIL;
        }
 
-       if (fread(*data, 1, *len, pFile)!=*len)
-       {
+       if (fread(*data, 1, *len, pFile) != *len) {
                fclose(pFile);
                free(*data);
-               LOG_ERROR("Can't open %s\n", fileName);
+               LOG_ERROR("Can't open %s", fileName);
                return ERROR_FAIL;
        }
        fclose(pFile);
-       *(((char *)(*data))+*len)=0; /* sentinel */
-
-       return ERROR_OK;
-
 
+       /* 0-byte after buffer (not included in *len) serves as a sentinel */
+       (*data)[*len] = 0;
 
+       return ERROR_OK;
 }
 
-
-
-int handle_cat_command(struct command_context_s *cmd_ctx, char *cmd,
-               char **args, int argc)
+COMMAND_HANDLER(handle_cat_command)
 {
-       if (argc != 1)
-       {
-               command_print(cmd_ctx, "cat <filename>");
-               return ERROR_INVALID_ARGUMENTS;
-       }
+       if (CMD_ARGC != 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
-       // NOTE!!! we only have line printing capability so we print the entire file as a single line.
-       void *data;
-       int len;
+       /* NOTE!!! we only have line printing capability so we print the entire file as a single
+        * line. */
+       char *data;
+       size_t len;
 
-       int retval = loadFile(args[0], &data, &len);
-       if (retval == ERROR_OK)
-       {
-               command_print(cmd_ctx, "%s", data);
+       int retval = load_file(CMD_ARGV[0], &data, &len);
+       if (retval == ERROR_OK) {
+               command_print(CMD, "%s", data);
                free(data);
-       }
-       else
-       {
-               command_print(cmd_ctx, "%s not found %d", args[0], retval);
-       }
+       } else
+               command_print(CMD, "%s not found", CMD_ARGV[0]);
 
        return ERROR_OK;
 }
-int handle_trunc_command(struct command_context_s *cmd_ctx, char *cmd,
-               char **args, int argc)
+
+COMMAND_HANDLER(handle_trunc_command)
 {
-       if (argc != 1)
-       {
-               command_print(cmd_ctx, "trunc <filename>");
-               return ERROR_INVALID_ARGUMENTS;
-       }
+       if (CMD_ARGC != 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
        FILE *config_file = NULL;
-       config_file = fopen(args[0], "w");
+       config_file = fopen(CMD_ARGV[0], "w");
        if (config_file != NULL)
                fclose(config_file);
 
        return ERROR_OK;
 }
 
-
-int handle_meminfo_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+#ifdef HAVE_MALLOC_H
+COMMAND_HANDLER(handle_meminfo_command)
 {
-       static int prev = 0;
+       static int prev;
        struct mallinfo info;
 
-       if (argc != 0)
-       {
-               command_print(cmd_ctx, "meminfo");
-               return ERROR_INVALID_ARGUMENTS;
-       }
+       if (CMD_ARGC != 0)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
        info = mallinfo();
 
        if (prev > 0)
-       {
-               command_print(cmd_ctx, "Diff:            %d", prev - info.fordblks);
-       }
+               command_print(CMD, "Diff:            %d", prev - info.fordblks);
        prev = info.fordblks;
 
-       command_print(cmd_ctx, "Available ram:   %d", info.fordblks );
+       command_print(CMD, "Available ram:   %d", info.fordblks);
 
        return ERROR_OK;
 }
+#endif
 
-
-int handle_append_command(struct command_context_s *cmd_ctx, char *cmd,
-               char **args, int argc)
+COMMAND_HANDLER(handle_append_command)
 {
-       if (argc < 1)
-       {
-               command_print(cmd_ctx,
-                               "append <filename> [<string1>, [<string2>, ...]]");
-               return ERROR_INVALID_ARGUMENTS;
-       }
+       if (CMD_ARGC < 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
+       int retval = ERROR_FAIL;
        FILE *config_file = NULL;
-       config_file = fopen(args[0], "a");
-       if (config_file != NULL)
-       {
-               int i;
+
+       config_file = fopen(CMD_ARGV[0], "a");
+       if (config_file != NULL) {
                fseek(config_file, 0, SEEK_END);
 
-               for (i = 1; i < argc; i++)
-               {
-                       fwrite(args[i], strlen(args[i]), 1, config_file);
-                       if (i != argc - 1)
-                       {
-                               fwrite(" ", 1, 1, config_file);
+               unsigned i;
+               for (i = 1; i < CMD_ARGC; i++) {
+                       if (fwrite(CMD_ARGV[i], 1, strlen(CMD_ARGV[i]),
+                                       config_file) != strlen(CMD_ARGV[i]))
+                               break;
+                       if (i != CMD_ARGC - 1) {
+                               if (fwrite(" ", 1, 1, config_file) != 1)
+                                       break;
                        }
                }
-               fwrite("\n", 1, 1, config_file);
+               if ((i == CMD_ARGC) && (fwrite("\n", 1, 1, config_file) == 1))
+                       retval = ERROR_OK;
+
                fclose(config_file);
        }
 
-       return ERROR_OK;
+       return retval;
 }
 
-
-
-int handle_cp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_cp_command)
 {
-       if (argc != 2)
-       {
-               return ERROR_INVALID_ARGUMENTS;
-       }
+       if (CMD_ARGC != 2)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
-       // NOTE!!! we only have line printing capability so we print the entire file as a single line.
-       void *data;
-       int len;
+       /* NOTE!!! we only have line printing capability so we print the entire file as a single
+        * line. */
+       char *data;
+       size_t len;
 
-       int retval = loadFile(args[0], &data, &len);
+       int retval = load_file(CMD_ARGV[0], &data, &len);
        if (retval != ERROR_OK)
                return retval;
 
-       FILE *f = fopen(args[1], "wb");
+       FILE *f = fopen(CMD_ARGV[1], "wb");
        if (f == NULL)
-               retval = ERROR_INVALID_ARGUMENTS;
+               retval = ERROR_COMMAND_SYNTAX_ERROR;
 
-       int pos = 0;
-       for (;;)
-       {
-               int chunk = len - pos;
-               static const int maxChunk = 512 * 1024; // ~1/sec
+       size_t pos = 0;
+       for (;; ) {
+               size_t chunk = len - pos;
+               static const size_t maxChunk = 512 * 1024;      /* ~1/sec */
                if (chunk > maxChunk)
-               {
                        chunk = maxChunk;
-               }
 
-               if ((retval==ERROR_OK)&&(fwrite(((char *)data)+pos, 1, chunk, f)!=chunk))
-                       retval = ERROR_INVALID_ARGUMENTS;
+               if ((retval == ERROR_OK) && (fwrite(data + pos, 1, chunk, f) != chunk))
+                       retval = ERROR_COMMAND_SYNTAX_ERROR;
 
                if (retval != ERROR_OK)
-               {
                        break;
-               }
 
-               command_print(cmd_ctx, "%d", len - pos);
+               command_print(CMD, "%zu", len - pos);
 
                pos += chunk;
 
@@ -293,12 +226,9 @@ int handle_cp_command(struct command_context_s *cmd_ctx, char *cmd, char **args,
        }
 
        if (retval == ERROR_OK)
-       {
-               command_print(cmd_ctx, "Copied %s to %s", args[0], args[1]);
-       } else
-       {
-               command_print(cmd_ctx, "Failed: %d", retval);
-       }
+               command_print(CMD, "Copied %s to %s", CMD_ARGV[0], CMD_ARGV[1]);
+       else
+               command_print(CMD, "copy failed");
 
        if (data != NULL)
                free(data);
@@ -306,183 +236,53 @@ int handle_cp_command(struct command_context_s *cmd_ctx, char *cmd, char **args,
                fclose(f);
 
        if (retval != ERROR_OK)
-               unlink(args[1]);
+               unlink(CMD_ARGV[1]);
 
        return retval;
 }
 
-
-
-
-#define SHOW_RESULT(a, b) LOG_ERROR(#a " failed %d\n", (int)b)
-
-#define IOSIZE 512
-void copyfile(char *name2, char *name1)
+COMMAND_HANDLER(handle_rm_command)
 {
+       if (CMD_ARGC != 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
-       int err;
-       char buf[IOSIZE];
-       int fd1, fd2;
-       ssize_t done, wrote;
-
-       fd1 = open(name1, O_WRONLY | O_CREAT);
-       if (fd1 < 0)
-               SHOW_RESULT( open, fd1 );
-
-       fd2 = open(name2, O_RDONLY);
-       if (fd2 < 0)
-               SHOW_RESULT( open, fd2 );
-
-       for (;;)
-       {
-               done = read(fd2, buf, IOSIZE );
-               if (done < 0)
-               {
-                       SHOW_RESULT( read, done );
-                       break;
-               }
-
-        if( done == 0 ) break;
-
-               wrote = write(fd1, buf, done);
-        if( wrote != done ) SHOW_RESULT( write, wrote );
-
-        if( wrote != done ) break;
-       }
-
-       err = close(fd1);
-    if( err < 0 ) SHOW_RESULT( close, err );
-
-       err = close(fd2);
-    if( err < 0 ) SHOW_RESULT( close, err );
-
-}
-
-/* utility fn to copy a directory */
-void copydir(char *name, char *destdir)
-{
-       int err;
-       DIR *dirp;
-
-       dirp = opendir(destdir);
-       if (dirp==NULL)
-       {
-               mkdir(destdir, 0777);
-       } else
-       {
-               err = closedir(dirp);
-       }
-
-       dirp = opendir(name);
-    if( dirp == NULL ) SHOW_RESULT( opendir, -1 );
-
-       for (;;)
-       {
-               struct dirent *entry = readdir(dirp);
-
-               if (entry == NULL)
-                       break;
-
-               if (strcmp(entry->d_name, ".") == 0)
-                       continue;
-               if (strcmp(entry->d_name, "..") == 0)
-                       continue;
-
-               int isDir = 0;
-               struct stat buf;
-               char fullPath[PATH_MAX];
-               strncpy(fullPath, name, PATH_MAX);
-               strcat(fullPath, "/");
-               strncat(fullPath, entry->d_name, PATH_MAX - strlen(fullPath));
-
-               if (stat(fullPath, &buf) == -1)
-               {
-                       LOG_ERROR("unable to read status from %s", fullPath);
-                       break;
-               }
-               isDir = S_ISDIR(buf.st_mode) != 0;
-
-               if (isDir)
-                       continue;
-
-               //        diag_printf("<INFO>: entry %14s",entry->d_name);
-               char fullname[PATH_MAX];
-               char fullname2[PATH_MAX];
-
-               strcpy(fullname, name);
-               strcat(fullname, "/");
-               strcat(fullname, entry->d_name);
-
-               strcpy(fullname2, destdir);
-               strcat(fullname2, "/");
-               strcat(fullname2, entry->d_name);
-               //        diag_printf("from %s to %s\n", fullname, fullname2);
-               copyfile(fullname, fullname2);
-
-               //       diag_printf("\n");
-       }
-
-       err = closedir(dirp);
-    if( err < 0 ) SHOW_RESULT( stat, err );
-}
-
-
-
-
-static int
-zylinjtag_Jim_Command_rm(Jim_Interp *interp,
-                                   int argc,
-               Jim_Obj * const *argv)
-{
-       int del;
-       if (argc != 2)
-       {
-               Jim_WrongNumArgs(interp, 1, argv, "rm ?dirorfile?");
-               return JIM_ERR;
-       }
-
-       del = 0;
-       if (unlink(Jim_GetString(argv[1], NULL)) == 0)
-               del = 1;
-       if (rmdir(Jim_GetString(argv[1], NULL)) == 0)
-               del = 1;
+       bool del = false;
+       if (rmdir(CMD_ARGV[0]) == 0)
+               del = true;
+       else if (unlink(CMD_ARGV[0]) == 0)
+               del = true;
 
-       return del ? JIM_OK : JIM_ERR;
+       return del ? ERROR_OK : ERROR_FAIL;
 }
 
-
-static int
-zylinjtag_Jim_Command_ls(Jim_Interp *interp,
-                                   int argc,
-               Jim_Obj * const *argv)
+static int ioutil_Jim_Command_ls(Jim_Interp *interp,
+       int argc,
+       Jim_Obj * const *argv)
 {
-       if (argc != 2)
-       {
+       if (argc != 2) {
                Jim_WrongNumArgs(interp, 1, argv, "ls ?dir?");
                return JIM_ERR;
        }
 
-       char *name = (char*) Jim_GetString(argv[1], NULL);
+       const char *name = Jim_GetString(argv[1], NULL);
 
        DIR *dirp = NULL;
        dirp = opendir(name);
        if (dirp == NULL)
-       {
                return JIM_ERR;
-       }
        Jim_Obj *objPtr = Jim_NewListObj(interp, NULL, 0);
 
-       for (;;)
-       {
+       for (;; ) {
                struct dirent *entry = NULL;
                entry = readdir(dirp);
                if (entry == NULL)
                        break;
 
-               if ((strcmp(".", entry->d_name)==0)||(strcmp("..", entry->d_name)==0))
+               if ((strcmp(".", entry->d_name) == 0) || (strcmp("..", entry->d_name) == 0))
                        continue;
 
-        Jim_ListAppendElement(interp, objPtr, Jim_NewStringObj(interp, entry->d_name, strlen(entry->d_name)));
+               Jim_ListAppendElement(interp, objPtr,
+                       Jim_NewStringObj(interp, entry->d_name, strlen(entry->d_name)));
        }
        closedir(dirp);
 
@@ -491,37 +291,11 @@ zylinjtag_Jim_Command_ls(Jim_Interp *interp,
        return JIM_OK;
 }
 
-int handle_peek_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
-{
-       if (argc != 1)
-       {
-               return ERROR_COMMAND_SYNTAX_ERROR;
-       }
-       volatile int *address=(volatile int *)strtoul(args[0], NULL, 0);
-       int value=*address;
-       command_print(cmd_ctx, "0x%x : 0x%x", address, value);
-       return ERROR_OK;
-}
-
-int handle_poke_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
-{
-       if (argc != 2)
-       {
-               return ERROR_INVALID_ARGUMENTS;
-       }
-       volatile int *address=(volatile int *)strtoul(args[0], NULL, 0);
-       int value=strtoul(args[1], NULL, 0);
-       *address=value;
-       return ERROR_OK;
-}
-
-static int
-zylinjtag_Jim_Command_peek(Jim_Interp *interp,
-                                   int argc,
-               Jim_Obj * const *argv)
+static int ioutil_Jim_Command_peek(Jim_Interp *interp,
+       int argc,
+       Jim_Obj *const *argv)
 {
-       if (argc != 2)
-       {
+       if (argc != 2) {
                Jim_WrongNumArgs(interp, 1, argv, "peek ?address?");
                return JIM_ERR;
        }
@@ -537,13 +311,11 @@ zylinjtag_Jim_Command_peek(Jim_Interp *interp,
        return JIM_OK;
 }
 
-static int
-zylinjtag_Jim_Command_poke(Jim_Interp *interp,
-                                   int argc,
-               Jim_Obj * const *argv)
+static int ioutil_Jim_Command_poke(Jim_Interp *interp,
+       int argc,
+       Jim_Obj *const *argv)
 {
-       if (argc != 3)
-       {
+       if (argc != 3) {
                Jim_WrongNumArgs(interp, 1, argv, "poke ?address? ?value?");
                return JIM_ERR;
        }
@@ -560,10 +332,9 @@ zylinjtag_Jim_Command_poke(Jim_Interp *interp,
        return JIM_OK;
 }
 
-
 /* not so pretty code to fish out ip number*/
-static int zylinjtag_Jim_Command_ip(Jim_Interp *interp, int argc,
-               Jim_Obj * const *argv)
+static int ioutil_Jim_Command_ip(Jim_Interp *interp, int argc,
+       Jim_Obj *const *argv)
 {
 #if !defined(__CYGWIN__)
        Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
@@ -571,12 +342,9 @@ static int zylinjtag_Jim_Command_ip(Jim_Interp *interp, int argc,
        struct ifaddrs *ifa = NULL, *ifp = NULL;
 
        if (getifaddrs(&ifp) < 0)
-       {
                return JIM_ERR;
-       }
 
-       for (ifa = ifp; ifa; ifa = ifa->ifa_next)
-       {
+       for (ifa = ifp; ifa; ifa = ifa->ifa_next) {
                char ip[200];
                socklen_t salen;
 
@@ -589,9 +357,7 @@ static int zylinjtag_Jim_Command_ip(Jim_Interp *interp, int argc,
 
                if (getnameinfo(ifa->ifa_addr, salen, ip, sizeof(ip), NULL, 0,
                                NI_NUMERICHOST) < 0)
-               {
                        continue;
-               }
 
                Jim_AppendString(interp, tclOutput, ip, strlen(ip));
                break;
@@ -608,12 +374,12 @@ static int zylinjtag_Jim_Command_ip(Jim_Interp *interp, int argc,
        return JIM_OK;
 }
 
+#ifdef HAVE_SYS_IOCTL_H
+#ifdef SIOCGIFHWADDR
 /* not so pretty code to fish out eth0 mac address */
-static int zylinjtag_Jim_Command_mac(Jim_Interp *interp, int argc,
-               Jim_Obj * const *argv)
+static int ioutil_Jim_Command_mac(Jim_Interp *interp, int argc,
+       Jim_Obj *const *argv)
 {
-
-
        struct ifreq *ifr, *ifend;
        struct ifreq ifreq;
        struct ifconf ifc;
@@ -622,45 +388,39 @@ static int zylinjtag_Jim_Command_mac(Jim_Interp *interp, int argc,
 
        SockFD = socket(AF_INET, SOCK_DGRAM, 0);
        if (SockFD < 0)
-       {
                return JIM_ERR;
-       }
 
        ifc.ifc_len = sizeof(ifs);
        ifc.ifc_req = ifs;
-       if (ioctl(SockFD, SIOCGIFCONF, &ifc) < 0)
-       {
+       if (ioctl(SockFD, SIOCGIFCONF, &ifc) < 0) {
                close(SockFD);
                return JIM_ERR;
        }
 
        ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq));
-       for (ifr = ifc.ifc_req; ifr < ifend; ifr++)
-       {
-               //if (ifr->ifr_addr.sa_family == AF_INET)
+       for (ifr = ifc.ifc_req; ifr < ifend; ifr++) {
+               /* if (ifr->ifr_addr.sa_family == AF_INET) */
                {
-                       if (strcmp("eth0", ifr->ifr_name)!=0)
+                       if (strcmp("eth0", ifr->ifr_name) != 0)
                                continue;
-                       strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
-                       if (ioctl(SockFD, SIOCGIFHWADDR, &ifreq) < 0)
-                       {
+                       strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name) - 1);
+                       if (ioctl(SockFD, SIOCGIFHWADDR, &ifreq) < 0) {
                                close(SockFD);
                                return JIM_ERR;
                        }
 
                        close(SockFD);
 
-
                        Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 
                        char buffer[256];
                        sprintf(buffer, "%02x-%02x-%02x-%02x-%02x-%02x",
-                                       ifreq.ifr_hwaddr.sa_data[0]&0xff,
-                                       ifreq.ifr_hwaddr.sa_data[1]&0xff,
-                                       ifreq.ifr_hwaddr.sa_data[2]&0xff,
-                                       ifreq.ifr_hwaddr.sa_data[3]&0xff,
-                                       ifreq.ifr_hwaddr.sa_data[4]&0xff,
-                                       ifreq.ifr_hwaddr.sa_data[5]&0xff);
+                               ifreq.ifr_hwaddr.sa_data[0]&0xff,
+                               ifreq.ifr_hwaddr.sa_data[1]&0xff,
+                               ifreq.ifr_hwaddr.sa_data[2]&0xff,
+                               ifreq.ifr_hwaddr.sa_data[3]&0xff,
+                               ifreq.ifr_hwaddr.sa_data[4]&0xff,
+                               ifreq.ifr_hwaddr.sa_data[5]&0xff);
 
                        Jim_AppendString(interp, tclOutput, buffer, strlen(buffer));
 
@@ -674,42 +434,102 @@ static int zylinjtag_Jim_Command_mac(Jim_Interp *interp, int argc,
        return JIM_ERR;
 
 }
+#endif
+#endif
 
+static const struct command_registration ioutil_command_handlers[] = {
+       {
+               .name = "cat",
+               .handler = handle_cat_command,
+               .mode = COMMAND_ANY,
+               .help = "display text file content",
+               .usage = "file_name",
+       },
+       {
+               .name = "trunc",
+               .handler = handle_trunc_command,
+               .mode = COMMAND_ANY,
+               .help = "truncate a file to zero length",
+               .usage = "file_name",
+       },
+       {
+               .name = "cp",
+               .handler = handle_cp_command,
+               .mode = COMMAND_ANY,
+               .help = "copy a file",
+               .usage = "src_file_name dst_file_name",
+       },
+       {
+               .name = "append_file",
+               .handler = handle_append_command,
+               .mode = COMMAND_ANY,
+               .help = "append a variable number of strings to a file",
+               .usage = "file_name [<string1>, [<string2>, ...]]",
+       },
+#ifdef HAVE_MALLOC_H
+       {
+               .name = "meminfo",
+               .handler = handle_meminfo_command,
+               .mode = COMMAND_ANY,
+               .help = "display free heap space",
+               .usage = "",
+       },
+#endif
+       {
+               .name = "rm",
+               .mode = COMMAND_ANY,
+               .handler = handle_rm_command,
+               .help = "remove a directory or file",
+               .usage = "file_name",
+       },
+
+       /*
+        * Peek and poke are security holes -- they manipulate
+        * server-internal addresses.
+        */
+
+       /* jim handlers */
+       {
+               .name = "peek",
+               .mode = COMMAND_ANY,
+               .jim_handler = ioutil_Jim_Command_peek,
+               .help = "peek at a memory address",
+               .usage = "address",
+       },
+       {
+               .name = "poke",
+               .mode = COMMAND_ANY,
+               .jim_handler = ioutil_Jim_Command_poke,
+               .help = "poke at a memory address",
+               .usage = "address value",
+       },
+       {
+               .name = "ls",
+               .mode = COMMAND_ANY,
+               .jim_handler = ioutil_Jim_Command_ls,
+               .help = "show a listing of files",
+               .usage = "dirname",
+       },
+#ifdef HAVE_SYS_IOCTL_H
+#ifdef SIOCGIFHWADDR
+       {
+               .name = "mac",
+               .mode = COMMAND_ANY,
+               .jim_handler = ioutil_Jim_Command_mac,
+               .help = "show MAC address",
+       },
+#endif
+#endif
+       {
+               .name = "ip",
+               .jim_handler = ioutil_Jim_Command_ip,
+               .mode = COMMAND_ANY,
+               .help = "show IP address",
+       },
+       COMMAND_REGISTRATION_DONE
+};
 
-
-int ioutil_init(struct command_context_s *cmd_ctx)
+int ioutil_init(struct command_context *cmd_ctx)
 {
-       register_command(cmd_ctx, NULL, "rm", handle_rm_command, COMMAND_ANY,
-                       "remove file");
-
-       register_command(cmd_ctx, NULL, "cat", handle_cat_command, COMMAND_ANY,
-                       "display file content");
-
-       register_command(cmd_ctx, NULL, "trunc", handle_trunc_command, COMMAND_ANY,
-                       "truncate a file to 0 size");
-
-       register_command(cmd_ctx, NULL, "cp", handle_cp_command,
-                                        COMMAND_ANY, "copy a file <from> <to>");
-
-       register_command(cmd_ctx, NULL, "append_file", handle_append_command,
-                       COMMAND_ANY, "append a variable number of strings to a file");
-
-       register_command(cmd_ctx, NULL, "meminfo", handle_meminfo_command,
-                       COMMAND_ANY, "display available ram memory");
-
-    Jim_CreateCommand(interp, "rm", zylinjtag_Jim_Command_rm, NULL, NULL);
-
-    Jim_CreateCommand(interp, "peek", zylinjtag_Jim_Command_peek, NULL, NULL);
-    Jim_CreateCommand(interp, "poke", zylinjtag_Jim_Command_poke, NULL, NULL);
-    Jim_CreateCommand(interp, "ls", zylinjtag_Jim_Command_ls, NULL, NULL);
-
-       Jim_CreateCommand(interp, "mac", zylinjtag_Jim_Command_mac,
-                       NULL, NULL);
-
-       Jim_CreateCommand(interp, "ip", zylinjtag_Jim_Command_ip,
-                       NULL, NULL);
-
-    return ERROR_OK;
+       return register_commands(cmd_ctx, NULL, ioutil_command_handlers);
 }
-
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