/contrib/bind9/lib/isc/unix/fsaccess.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 93 lines · 48 code · 21 blank · 24 comment · 13 complexity · 7f7dc987ad964814fed8d0da279d0b07 MD5 · raw file
- /*
- * Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000, 2001 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
- /* $Id: fsaccess.c,v 1.13 2007/06/19 23:47:18 tbox Exp $ */
- #include <config.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <errno.h>
- #include "errno2result.h"
- /*! \file
- * \brief
- * The OS-independent part of the API is in lib/isc.
- */
- #include "../fsaccess.c"
- isc_result_t
- isc_fsaccess_set(const char *path, isc_fsaccess_t access) {
- struct stat statb;
- mode_t mode;
- isc_boolean_t is_dir = ISC_FALSE;
- isc_fsaccess_t bits;
- isc_result_t result;
- if (stat(path, &statb) != 0)
- return (isc__errno2result(errno));
- if ((statb.st_mode & S_IFDIR) != 0)
- is_dir = ISC_TRUE;
- else if ((statb.st_mode & S_IFREG) == 0)
- return (ISC_R_INVALIDFILE);
- result = check_bad_bits(access, is_dir);
- if (result != ISC_R_SUCCESS)
- return (result);
- /*
- * Done with checking bad bits. Set mode_t.
- */
- mode = 0;
- #define SET_AND_CLEAR1(modebit) \
- if ((access & bits) != 0) { \
- mode |= modebit; \
- access &= ~bits; \
- }
- #define SET_AND_CLEAR(user, group, other) \
- SET_AND_CLEAR1(user); \
- bits <<= STEP; \
- SET_AND_CLEAR1(group); \
- bits <<= STEP; \
- SET_AND_CLEAR1(other);
- bits = ISC_FSACCESS_READ | ISC_FSACCESS_LISTDIRECTORY;
- SET_AND_CLEAR(S_IRUSR, S_IRGRP, S_IROTH);
- bits = ISC_FSACCESS_WRITE |
- ISC_FSACCESS_CREATECHILD |
- ISC_FSACCESS_DELETECHILD;
- SET_AND_CLEAR(S_IWUSR, S_IWGRP, S_IWOTH);
- bits = ISC_FSACCESS_EXECUTE |
- ISC_FSACCESS_ACCESSCHILD;
- SET_AND_CLEAR(S_IXUSR, S_IXGRP, S_IXOTH);
- INSIST(access == 0);
- if (chmod(path, mode) < 0)
- return (isc__errno2result(errno));
- return (ISC_R_SUCCESS);
- }