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1 /* gethostname emulation for SysV and POSIX.1. |
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2 Copyright (C) 1992 Free Software Foundation, Inc. |
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3 |
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4 This program is free software; you can redistribute it and/or modify |
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5 it under the terms of the GNU General Public License as published by |
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6 the Free Software Foundation; either version 2, or (at your option) |
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7 any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, |
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 GNU General Public License for more details. |
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13 |
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14 You should have received a copy of the GNU General Public License |
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15 along with this program; if not, write to the Free Software |
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16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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17 |
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18 /* David MacKenzie <djm@gnu.ai.mit.edu> */ |
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19 |
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20 #ifdef HAVE_UNAME |
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21 #include <sys/utsname.h> |
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22 #endif |
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23 |
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24 /* Put up to LEN chars of the host name into NAME. |
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25 Null terminate it if the name is shorter than LEN. |
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26 Return 0 if ok, -1 if error. */ |
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27 |
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28 int |
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29 gethostname (name, len) |
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30 char *name; |
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31 int len; |
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32 { |
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33 #ifdef HAVE_UNAME |
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34 struct utsname uts; |
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35 |
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36 if (uname (&uts) == -1) |
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37 return -1; |
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38 if (len > sizeof (uts.nodename)) |
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39 { |
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40 /* More space than we need is available. */ |
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41 name[sizeof (uts.nodename)] = '\0'; |
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42 len = sizeof (uts.nodename); |
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43 } |
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44 strncpy (name, uts.nodename, len); |
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45 #else |
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46 strcpy (name, ""); /* Hardcode your system name if you want. */ |
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47 #endif |
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48 return 0; |
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49 } |
