1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * pidof implementation for busybox
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | *
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7 | * Licensed under the GPL version 2, see the file LICENSE in this tarball.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 |
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12 | enum {
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13 | USE_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
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14 | USE_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
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15 | OPT_SINGLE = USE_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
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16 | OPT_OMIT = USE_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
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17 | };
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18 |
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19 | int pidof_main(int argc, char **argv);
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20 | int pidof_main(int argc, char **argv)
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21 | {
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22 | unsigned first = 1;
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23 | unsigned opt;
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24 | #if ENABLE_FEATURE_PIDOF_OMIT
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25 | char ppid_str[sizeof(int)*3 + 1];
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26 | llist_t *omits = NULL; /* list of pids to omit */
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27 | opt_complementary = "o::";
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28 | #endif
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29 |
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30 | /* do unconditional option parsing */
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31 | opt = getopt32(argv, ""
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32 | USE_FEATURE_PIDOF_SINGLE ("s")
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33 | USE_FEATURE_PIDOF_OMIT("o:", &omits));
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34 |
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35 | #if ENABLE_FEATURE_PIDOF_OMIT
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36 | /* fill omit list. */
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37 | {
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38 | llist_t *omits_p = omits;
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39 | while (omits_p) {
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40 | /* are we asked to exclude the parent's process ID? */
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41 | if (strcmp(omits_p->data, "%PPID") == 0) {
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42 | sprintf(ppid_str, "%u", (unsigned)getppid());
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43 | omits_p->data = ppid_str;
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44 | }
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45 | omits_p = omits_p->link;
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46 | }
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47 | }
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48 | #endif
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49 | /* Looks like everything is set to go. */
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50 | while (optind < argc) {
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51 | pid_t *pidList;
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52 | pid_t *pl;
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53 |
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54 | /* reverse the pidlist like GNU pidof does. */
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55 | pidList = pidlist_reverse(find_pid_by_name(argv[optind]));
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56 | for (pl = pidList; *pl; pl++) {
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57 | #if ENABLE_FEATURE_PIDOF_OMIT
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58 | if (opt & OPT_OMIT) {
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59 | llist_t *omits_p = omits;
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60 | while (omits_p) {
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61 | if (xatoul(omits_p->data) == *pl) {
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62 | goto omitting;
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63 | }
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64 | omits_p = omits_p->link;
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65 | }
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66 | }
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67 | #endif
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68 | printf(" %u" + first, (unsigned)*pl);
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69 | first = 0;
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70 | if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
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71 | break;
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72 | #if ENABLE_FEATURE_PIDOF_OMIT
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73 | omitting: ;
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74 | #endif
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75 | }
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76 | free(pidList);
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77 | optind++;
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78 | }
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79 | putchar('\n');
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80 |
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81 | #if ENABLE_FEATURE_PIDOF_OMIT
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82 | if (ENABLE_FEATURE_CLEAN_UP)
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83 | llist_free(omits, NULL);
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84 | #endif
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85 | return first; /* 1 (failure) - no processes found */
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86 | }
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