Mercurial > hg > toybox

annotate toys/posix/chmod.c @ 841:cb0c3a773437

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Kyungwan Han submitted ifconfig.
author Rob Landley <rob@landley.net>
date Tue, 02 Apr 2013 01:58:18 -0500
parents 786841fdb1e0
children aae54dd82927
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
1 /* chmod.c - Change file mode bits
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
2 *
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
3 * Copyright 2012 Rob Landley <rob@landley.net>
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
4 *
656
6df4ccc0acbe Regularize command headers, update links to standards documents.
Rob Landley <rob@landley.net>
parents: 653
diff changeset
5 * See http://opengroup.org/onlinepubs/9699919799/utilities/chmod.html
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
6
594
051dffe00b99 The linux from scratch build wants -v on chmod.
Rob Landley <rob@landley.net>
parents: 590
diff changeset
7 USE_CHMOD(NEWTOY(chmod, "<2?vR", TOYFLAG_BIN))
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
8
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
9 config CHMOD
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
10 bool "chmod"
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
11 default y
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
12 help
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
13 usage: chmod [-R] MODE FILE...
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
14
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
15 Change mode of listed file[s] (recursively with -R).
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
16
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
17 MODE can be (comma-separated) stanzas: [ugoa][+-=][rwxstXugo]
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
18
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
19 Stanzas are applied in order: For each category (u = user,
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
20 g = group, o = other, a = all three, if none specified default is a),
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
21 set (+), clear (-), or copy (=), r = read, w = write, x = execute.
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
22 s = u+s = suid, g+s = sgid, o+s = sticky. (+t is an alias for o+s).
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
23 suid/sgid: execute as the user/group who owns the file.
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
24 sticky: can't delete files you don't own out of this directory
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
25 X = x for directories or if any category already has x set.
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
26
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
27 Or MODE can be an octal value up to 7777 ug uuugggooo top +
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
28 bit 1 = o+x, bit 1<<8 = u+w, 1<<11 = g+1 sstrwxrwxrwx bottom
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
29
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
30 Examples:
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
31 chmod u+w file - allow owner of "file" to write to it.
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
32 chmod 744 file - user can read/write/execute, everyone else read only
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
33 */
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
34
674
7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
Rob Landley <rob@landley.net>
parents: 656
diff changeset
35 #define FOR_chmod
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
36 #include "toys.h"
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
37
674
7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
Rob Landley <rob@landley.net>
parents: 656
diff changeset
38 GLOBALS(
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
39 char *mode;
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
40 )
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
41
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
42 int do_chmod(struct dirtree *try)
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
43 {
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
44 mode_t mode;
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 545
diff changeset
45
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
46 if (!dirtree_notdotdot(try)) return 0;
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
47
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
48 mode = string_to_mode(TT.mode, try->st.st_mode);
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
49 if (toys.optflags & FLAG_v) {
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
50 char *s = dirtree_path(try, 0);
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
51 printf("chmod '%s' to %04o\n", s, mode);
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
52 free(s);
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
53 }
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
54 wfchmodat(dirtree_parentfd(try), try->name, mode);
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
55
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
56 return (toys.optflags & FLAG_R) ? DIRTREE_RECURSE : 0;
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
57 }
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
58
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
59 void chmod_main(void)
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
60 {
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
61 TT.mode = *toys.optargs;
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
62 char **file;
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
63
694
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 674
diff changeset
64 for (file = toys.optargs+1; *file; file++) dirtree_read(*file, do_chmod);
544
f11693d78764 New toys - chmod, chown, and chgrp.
Georgi Chorbadzhiyski <gf@unixsol.org>
parents:
diff changeset
65 }