/core/10.4/fusefs/mount/getmntopts.c

http://macfuse.googlecode.com/ · C · 171 lines · 87 code · 19 blank · 65 comment · 40 complexity · cf6c84657d2127fa88a006b195dbb2b0 MD5 · raw file

  1. /*
  2. * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
  3. *
  4. * @APPLE_LICENSE_HEADER_START@
  5. *
  6. * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
  7. * Reserved. This file contains Original Code and/or Modifications of
  8. * Original Code as defined in and that are subject to the Apple Public
  9. * Source License Version 1.0 (the 'License'). You may not use this file
  10. * except in compliance with the License. Please obtain a copy of the
  11. * License at http://www.apple.com/publicsource and read it before using
  12. * this file.
  13. *
  14. * The Original Code and all software distributed under the License are
  15. * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16. * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17. * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18. * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
  19. * License for the specific language governing rights and limitations
  20. * under the License."
  21. *
  22. * @APPLE_LICENSE_HEADER_END@
  23. */
  24. /*-
  25. * Copyright (c) 1994
  26. * The Regents of the University of California. All rights reserved.
  27. *
  28. * Redistribution and use in source and binary forms, with or without
  29. * modification, are permitted provided that the following conditions
  30. * are met:
  31. * 1. Redistributions of source code must retain the above copyright
  32. * notice, this list of conditions and the following disclaimer.
  33. * 2. Redistributions in binary form must reproduce the above copyright
  34. * notice, this list of conditions and the following disclaimer in the
  35. * documentation and/or other materials provided with the distribution.
  36. * 3. All advertising materials mentioning features or use of this software
  37. * must display the following acknowledgement:
  38. * This product includes software developed by the University of
  39. * California, Berkeley and its contributors.
  40. * 4. Neither the name of the University nor the names of its contributors
  41. * may be used to endorse or promote products derived from this software
  42. * without specific prior written permission.
  43. *
  44. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54. * SUCH DAMAGE.
  55. */
  56. #include <sys/param.h>
  57. #include <sys/stat.h>
  58. #include <err.h>
  59. #include <errno.h>
  60. #include <stdlib.h>
  61. #include <string.h>
  62. #include <sysexits.h>
  63. #include "mntopts.h"
  64. int getmnt_silent = 1;
  65. void
  66. getmntopts(options, m0, flagp, altflagp)
  67. const char *options;
  68. const struct mntopt *m0;
  69. int *flagp;
  70. u_int64_t *altflagp;
  71. {
  72. const struct mntopt *m;
  73. int negative;
  74. size_t len;
  75. char *opt, *optbuf, *p;
  76. /* Copy option string, since it is about to be torn asunder... */
  77. if ((optbuf = strdup(options)) == NULL)
  78. err(1, NULL);
  79. for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
  80. /* Check for "no" prefix. */
  81. if (opt[0] == 'n' && opt[1] == 'o') {
  82. negative = 1;
  83. opt += 2;
  84. } else
  85. negative = 0;
  86. /*
  87. * for options with assignments in them (ie. quotas)
  88. * ignore the assignment as it's handled elsewhere
  89. */
  90. p = strchr(opt, '=');
  91. if (p)
  92. *++p = '\0';
  93. /* Scan option table. */
  94. for (m = m0; m->m_option != NULL; ++m) {
  95. len = strlen(m->m_option);
  96. if (strncasecmp(opt, m->m_option, len) == 0)
  97. if ( opt[len] == '\0'
  98. || opt[len] == '='
  99. )
  100. break;
  101. }
  102. /* Save flag, or fail if option is not recognized. */
  103. if (m->m_option) {
  104. if (m->m_altloc) {
  105. if (negative == m->m_inverse)
  106. *altflagp |= m->m_flag;
  107. else
  108. *altflagp &= ~m->m_flag;
  109. } else {
  110. u_int32_t m_flag32;
  111. m_flag32 = (u_int32_t)(m->m_flag & 0xFFFFFFFF);
  112. if (negative == m->m_inverse)
  113. *flagp |= m_flag32;
  114. else
  115. *flagp &= ~m_flag32;
  116. }
  117. } else if (!getmnt_silent) {
  118. errx(1, "-o %s: option not supported", opt);
  119. }
  120. }
  121. free(optbuf);
  122. }
  123. void
  124. rmslashes(rrpin, rrpout)
  125. char *rrpin;
  126. char *rrpout;
  127. {
  128. char *rrpoutstart;
  129. *rrpout = *rrpin;
  130. for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) {
  131. /* skip all double slashes */
  132. while (*rrpin == '/' && *(rrpin + 1) == '/')
  133. rrpin++;
  134. }
  135. /* remove trailing slash if necessary */
  136. if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/')
  137. *(rrpout - 1) = '\0';
  138. else
  139. *rrpout = '\0';
  140. }
  141. void
  142. checkpath(path, resolved)
  143. const char *path;
  144. char *resolved;
  145. {
  146. struct stat sb;
  147. if (realpath(path, resolved) != NULL && stat(resolved, &sb) == 0) {
  148. if (!S_ISDIR(sb.st_mode))
  149. errx(EX_USAGE, "%s: not a directory", resolved);
  150. } else
  151. errx(EX_USAGE, "%s: %s", resolved, strerror(errno));
  152. }