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annotate lib/acl-internal.h @ 8476:2798cb65bd90

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Add limited support for Solaris 10 ZFS-style ACLs: just enough to handle file_has_acl. * lib/acl-internal.h, lib/acl_entries.c, lib/file-has-acl.c: New files. * lib/acl.c: Move header inclusions and related macro defns into lib/acl-internal.h. (S_ISLNK): Remove defn, since that's now done for us. (file_has_acl): Move to lib/file-has-acl.c. Call acl_trivial if available. This is the crucial part of the fix. (acl_entries): Move to lib/acl_entries.c. Now extern, since it's shared within the library. Rewrite a bit, partly to make it compatible with the GNU coding style. * m4/acl.m4 (AC_FUNC_ACL): Add AC_LIBOBJ([file-has-acl]). Remove unnecessary double-quotes. Don't test for acl_to_text; the build will catch that. Replace acl_entries if it doesn't exist and it is needed. Check for -lsec and acl_trivial (as used on Solaris 10). * modules/acl (Files): Add lib/acl-internal.h, lib/acl_entries.c, lib/file-has-acl.c. (Depends-on): Add sys_stat, for S_ISLNK.
author Paul Eggert <eggert@cs.ucla.edu>
date Mon, 19 Mar 2007 21:58:57 +0000
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children 19b8b337ecaa
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8476
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1 /* Internal implementation of access control lists.
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2
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3 Copyright (C) 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18
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19 Written by Paul Eggert and Andreas Gruenbacher. */
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20
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21 #include <config.h>
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22
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23 #include "acl.h"
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24
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25 #include <stdbool.h>
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26 #include <stdlib.h>
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27
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28 #ifdef HAVE_ACL_LIBACL_H
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29 # include <acl/libacl.h>
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30 #endif
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31
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32 #include "error.h"
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33 #include "quote.h"
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34
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35 #include <errno.h>
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36 #ifndef ENOSYS
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37 # define ENOSYS (-1)
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38 #endif
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39 #ifndef ENOTSUP
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40 # define ENOTSUP (-1)
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41 #endif
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42
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43 #if ENABLE_NLS
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44 # include <libintl.h>
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45 # define _(Text) gettext (Text)
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46 #else
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47 # define _(Text) Text
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48 #endif
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49
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50 #ifndef HAVE_FCHMOD
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51 # define HAVE_FCHMOD false
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52 # define fchmod(fd, mode) (-1)
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53 #endif
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54
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55 #ifndef MIN_ACL_ENTRIES
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56 # define MIN_ACL_ENTRIES 4
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57 #endif
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58
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59 /* POSIX 1003.1e (draft 17) */
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60 #ifndef HAVE_ACL_GET_FD
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61 # define HAVE_ACL_GET_FD false
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62 # define acl_get_fd(fd) (NULL)
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63 #endif
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64
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65 /* POSIX 1003.1e (draft 17) */
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66 #ifndef HAVE_ACL_SET_FD
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67 # define HAVE_ACL_SET_FD false
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68 # define acl_set_fd(fd, acl) (-1)
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69 #endif
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70
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71 /* Linux-specific */
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72 #ifndef HAVE_ACL_EXTENDED_FILE
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73 # define HAVE_ACL_EXTENDED_FILE false
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74 # define acl_extended_file(name) (-1)
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75 #endif
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76
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77 /* Linux-specific */
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78 #ifndef HAVE_ACL_FROM_MODE
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79 # define HAVE_ACL_FROM_MODE false
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80 # define acl_from_mode(mode) (NULL)
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81 #endif
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82
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83 #define ACL_NOT_WELL_SUPPORTED(Errno) \
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84 (Errno == ENOTSUP || Errno == ENOSYS || Errno == EINVAL)
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85
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86 /* Define a replacement for acl_entries if needed. */
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87 #if USE_ACL && HAVE_ACL_GET_FILE && HAVE_ACL_FREE && !HAVE_ACL_ENTRIES
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88 # define acl_entries rpl_acl_entries
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89 int acl_entries (acl_t);
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90 #endif