1 | /* |
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2 | * Copyright (c) 1997-2002 Red Hat, Inc. All rights reserved. |
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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, version 2, |
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6 | * as published by the Free Software Foundation. |
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7 | * |
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8 | * This program is distributed in the hope that it will be useful, |
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9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 | * GNU General Public License for more details. |
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12 | * |
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13 | * You should have received a copy of the GNU General Public License |
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14 | * along with this program; if not, write to the Free Software |
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15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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16 | * |
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17 | */ |
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18 | #include <errno.h> |
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19 | #include <fcntl.h> |
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20 | #include <stdio.h> |
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21 | #include <stdlib.h> |
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22 | #include <string.h> |
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23 | #include <unistd.h> |
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24 | |
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25 | /* this will be running setgid root, so be careful! */ |
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26 | |
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27 | static void |
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28 | usage(void) { |
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29 | fprintf(stderr, "usage: netreport [-r]\n"); |
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30 | exit(1); |
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31 | } |
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32 | |
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33 | #define ADD 1 |
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34 | #define DEL 0 |
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35 | int main(int argc, char ** argv) { |
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36 | int action = ADD; |
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37 | /* more than long enough for "/var/run/netreport/<pid>\0" */ |
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38 | char netreport_name[64]; |
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39 | int netreport_file; |
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40 | |
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41 | if (argc > 2) { |
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42 | usage(); |
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43 | } |
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44 | |
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45 | if (argc > 1) { |
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46 | if (argc == 2 && strcmp(argv[1], "-r") == 0) { |
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47 | action = DEL; |
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48 | } else { |
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49 | usage(); |
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50 | } |
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51 | } |
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52 | |
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53 | snprintf(netreport_name, sizeof(netreport_name), |
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54 | "/var/run/netreport/%d", getppid()); |
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55 | if (action == ADD) { |
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56 | netreport_file = open(netreport_name, |
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57 | O_EXCL|O_CREAT|O_WRONLY|O_TRUNC|O_NOFOLLOW, 0); |
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58 | if (netreport_file == -1) { |
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59 | if (errno != EEXIST) { |
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60 | perror("Could not create netreport file"); |
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61 | exit (1); |
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62 | } |
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63 | } else { |
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64 | close(netreport_file); |
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65 | } |
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66 | } else { |
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67 | /* ignore errors; not much we can do, won't hurt anything */ |
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68 | unlink(netreport_name); |
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69 | } |
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70 | |
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71 | return 0; |
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72 | } |
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