Annotation of /tags/mkinitrd-6_3_1/busybox/coreutils/chown.c
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Revision 532 -
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/coreutils/chown.c
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File size: 2944 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/coreutils/chown.c
File MIME type: text/plain
File size: 2944 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | niro | 532 | /* vi: set sw=4 ts=4: */ |
2 | /* | ||
3 | * Mini chown implementation for busybox | ||
4 | * | ||
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> | ||
6 | * | ||
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | ||
8 | */ | ||
9 | |||
10 | /* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */ | ||
11 | /* BB_AUDIT GNU defects - unsupported long options. */ | ||
12 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */ | ||
13 | |||
14 | #include "busybox.h" | ||
15 | |||
16 | static struct bb_uidgid_t ugid = { -1, -1 }; | ||
17 | |||
18 | static int (*chown_func)(const char *, uid_t, gid_t) = chown; | ||
19 | |||
20 | #define OPT_RECURSE (option_mask32 & 1) | ||
21 | #define OPT_NODEREF (option_mask32 & 2) | ||
22 | #define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0)) | ||
23 | #define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0)) | ||
24 | #define OPT_QUIET (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0)) | ||
25 | #define OPT_STR ("Rh" USE_DESKTOP("vcf")) | ||
26 | |||
27 | /* TODO: | ||
28 | * -H if a command line argument is a symbolic link to a directory, traverse it | ||
29 | * -L traverse every symbolic link to a directory encountered | ||
30 | * -P do not traverse any symbolic links (default) | ||
31 | */ | ||
32 | |||
33 | static int fileAction(const char *fileName, struct stat *statbuf, | ||
34 | void ATTRIBUTE_UNUSED *junk, int depth) | ||
35 | { | ||
36 | // TODO: -H/-L/-P | ||
37 | // if (depth ... && S_ISLNK(statbuf->st_mode)) .... | ||
38 | |||
39 | if (!chown_func(fileName, | ||
40 | (ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid, | ||
41 | (ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid) | ||
42 | ) { | ||
43 | if (OPT_VERBOSE | ||
44 | || (OPT_CHANGED && (statbuf->st_uid != ugid.uid || statbuf->st_gid != ugid.gid)) | ||
45 | ) { | ||
46 | printf("changed ownership of '%s' to %u:%u\n", | ||
47 | fileName, ugid.uid, ugid.gid); | ||
48 | } | ||
49 | return TRUE; | ||
50 | } | ||
51 | if (!OPT_QUIET) | ||
52 | bb_perror_msg("%s", fileName); /* A filename can have % in it... */ | ||
53 | return FALSE; | ||
54 | } | ||
55 | |||
56 | int chown_main(int argc, char **argv) | ||
57 | { | ||
58 | char *groupName; | ||
59 | int retval = EXIT_SUCCESS; | ||
60 | |||
61 | opt_complementary = "-2"; | ||
62 | getopt32(argc, argv, OPT_STR); | ||
63 | argv += optind; | ||
64 | |||
65 | if (OPT_NODEREF) chown_func = lchown; | ||
66 | |||
67 | /* First, check if there is a group name here */ | ||
68 | groupName = strchr(*argv, '.'); /* deprecated? */ | ||
69 | if (!groupName) | ||
70 | groupName = strchr(*argv, ':'); | ||
71 | else | ||
72 | *groupName = ':'; /* replace '.' with ':' */ | ||
73 | |||
74 | /* First, try parsing "user[:[group]]" */ | ||
75 | if (!groupName) { /* "user" */ | ||
76 | ugid.uid = get_ug_id(*argv, xuname2uid); | ||
77 | } else if (groupName == *argv) { /* ":group" */ | ||
78 | ugid.gid = get_ug_id(groupName + 1, xgroup2gid); | ||
79 | } else { | ||
80 | if (!groupName[1]) /* "user:" */ | ||
81 | *groupName = '\0'; | ||
82 | if (!get_uidgid(&ugid, *argv, 1)) | ||
83 | bb_error_msg_and_die("unknown user/group %s", *argv); | ||
84 | } | ||
85 | |||
86 | /* Ok, ready to do the deed now */ | ||
87 | argv++; | ||
88 | do { | ||
89 | if (!recursive_action(*argv, | ||
90 | OPT_RECURSE, // recurse | ||
91 | FALSE, // follow links: TODO: -H/-L/-P | ||
92 | FALSE, // depth first | ||
93 | fileAction, // file action | ||
94 | fileAction, // dir action | ||
95 | NULL, // user data | ||
96 | 0) // depth | ||
97 | ) { | ||
98 | retval = EXIT_FAILURE; | ||
99 | } | ||
100 | } while (*++argv); | ||
101 | |||
102 | return retval; | ||
103 | } |