1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini chown 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 GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | /* BB_AUDIT SUSv3 defects - unsupported options -h, -H, -L, and -P. */
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11 | /* BB_AUDIT GNU defects - unsupported options -h, -c, -f, -v, and long options. */
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12 | /* BB_AUDIT Note: gnu chown does not support -H, -L, or -P. */
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13 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
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14 |
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15 | #include <stdlib.h>
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16 | #include <unistd.h>
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17 | #include <string.h>
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18 | #include "busybox.h"
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19 |
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20 | static uid_t uid = -1;
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21 | static gid_t gid = -1;
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22 |
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23 | static int (*chown_func)(const char *, uid_t, gid_t) = chown;
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24 |
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25 | static int fileAction(const char *fileName, struct stat *statbuf,
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26 | void ATTRIBUTE_UNUSED *junk)
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27 | {
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28 | if (!chown_func(fileName,
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29 | (uid == (uid_t)-1) ? statbuf->st_uid : uid,
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30 | (gid == (gid_t)-1) ? statbuf->st_gid : gid)) {
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31 | return TRUE;
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32 | }
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33 | bb_perror_msg("%s", fileName); /* A filename could have % in it... */
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34 | return FALSE;
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35 | }
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36 |
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37 | #define FLAG_R 1
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38 | #define FLAG_h 2
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39 |
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40 | int chown_main(int argc, char **argv)
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41 | {
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42 | int flags;
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43 | int retval = EXIT_SUCCESS;
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44 | char *groupName;
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45 |
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46 | flags = bb_getopt_ulflags(argc, argv, "Rh");
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47 |
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48 | if (flags & FLAG_h) chown_func = lchown;
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49 |
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50 | if (argc - optind < 2) {
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51 | bb_show_usage();
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52 | }
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53 |
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54 | argv += optind;
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55 |
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56 | /* First, check if there is a group name here */
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57 | if ((groupName = strchr(*argv, '.')) == NULL) {
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58 | groupName = strchr(*argv, ':');
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59 | }
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60 |
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61 | /* Check for the username and groupname */
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62 | if (groupName) {
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63 | *groupName++ = '\0';
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64 | gid = get_ug_id(groupName, bb_xgetgrnam);
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65 | }
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66 | if (--groupName != *argv) uid = get_ug_id(*argv, bb_xgetpwnam);
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67 | ++argv;
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68 |
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69 | /* Ok, ready to do the deed now */
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70 | do {
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71 | if (! recursive_action (*argv, (flags & FLAG_R), FALSE, FALSE,
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72 | fileAction, fileAction, NULL)) {
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73 | retval = EXIT_FAILURE;
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74 | }
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75 | } while (*++argv);
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76 |
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77 | return retval;
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78 | }
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