94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: fsaccess.c,v 1.13 2007/06/19 23:47:18 tbox Exp $ */
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#include <config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include "errno2result.h"
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/*! \file
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* \brief
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* The OS-independent part of the API is in lib/isc.
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*/
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#include "../fsaccess.c"
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isc_result_t
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isc_fsaccess_set(const char *path, isc_fsaccess_t access) {
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struct stat statb;
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mode_t mode;
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isc_boolean_t is_dir = ISC_FALSE;
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isc_fsaccess_t bits;
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isc_result_t result;
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if (stat(path, &statb) != 0)
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return (isc__errno2result(errno));
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if ((statb.st_mode & S_IFDIR) != 0)
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is_dir = ISC_TRUE;
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else if ((statb.st_mode & S_IFREG) == 0)
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return (ISC_R_INVALIDFILE);
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result = check_bad_bits(access, is_dir);
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if (result != ISC_R_SUCCESS)
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return (result);
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/*
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* Done with checking bad bits. Set mode_t.
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*/
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mode = 0;
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#define SET_AND_CLEAR1(modebit) \
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if ((access & bits) != 0) { \
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mode |= modebit; \
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access &= ~bits; \
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}
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#define SET_AND_CLEAR(user, group, other) \
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SET_AND_CLEAR1(user); \
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bits <<= STEP; \
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SET_AND_CLEAR1(group); \
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bits <<= STEP; \
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SET_AND_CLEAR1(other);
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bits = ISC_FSACCESS_READ | ISC_FSACCESS_LISTDIRECTORY;
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SET_AND_CLEAR(S_IRUSR, S_IRGRP, S_IROTH);
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bits = ISC_FSACCESS_WRITE |
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ISC_FSACCESS_CREATECHILD |
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ISC_FSACCESS_DELETECHILD;
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SET_AND_CLEAR(S_IWUSR, S_IWGRP, S_IWOTH);
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bits = ISC_FSACCESS_EXECUTE |
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ISC_FSACCESS_ACCESSCHILD;
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SET_AND_CLEAR(S_IXUSR, S_IXGRP, S_IXOTH);
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INSIST(access == 0);
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if (chmod(path, mode) < 0)
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return (isc__errno2result(errno));
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return (ISC_R_SUCCESS);
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}
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