ioctl.c 2.8 KB

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  1. /*
  2. * fs/cifs/ioctl.c
  3. *
  4. * vfs operations that deal with io control
  5. *
  6. * Copyright (C) International Business Machines Corp., 2005
  7. * Author(s): Steve French (sfrench@us.ibm.com)
  8. *
  9. * This library is free software; you can redistribute it and/or modify
  10. * it under the terms of the GNU Lesser General Public License as published
  11. * by the Free Software Foundation; either version 2.1 of the License, or
  12. * (at your option) any later version.
  13. *
  14. * This library is distributed in the hope that it will be useful,
  15. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
  17. * the GNU Lesser General Public License for more details.
  18. *
  19. * You should have received a copy of the GNU Lesser General Public License
  20. * along with this library; if not, write to the Free Software
  21. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22. */
  23. #include <linux/fs.h>
  24. #include "cifspdu.h"
  25. #include "cifsglob.h"
  26. #include "cifsproto.h"
  27. #include "cifs_debug.h"
  28. #include "cifsfs.h"
  29. #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2)
  30. int cifs_ioctl (struct inode * inode, struct file * filep,
  31. unsigned int command, unsigned long arg)
  32. {
  33. int rc = -ENOTTY; /* strange error - but the precedent */
  34. int xid;
  35. struct cifs_sb_info *cifs_sb;
  36. #ifdef CONFIG_CIFS_POSIX
  37. __u64 ExtAttrBits = 0;
  38. __u64 ExtAttrMask = 0;
  39. __u64 caps;
  40. struct cifsTconInfo *tcon;
  41. struct cifsFileInfo *pSMBFile =
  42. (struct cifsFileInfo *)filep->private_data;
  43. #endif /* CONFIG_CIFS_POSIX */
  44. xid = GetXid();
  45. cFYI(1,("ioctl file %p cmd %u arg %lu",filep,command,arg));
  46. cifs_sb = CIFS_SB(inode->i_sb);
  47. #ifdef CONFIG_CIFS_POSIX
  48. tcon = cifs_sb->tcon;
  49. if(tcon)
  50. caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
  51. else {
  52. rc = -EIO;
  53. FreeXid(xid);
  54. return -EIO;
  55. }
  56. #endif /* CONFIG_CIFS_POSIX */
  57. switch(command) {
  58. case CIFS_IOC_CHECKUMOUNT:
  59. cFYI(1,("User unmount attempted"));
  60. if(cifs_sb->mnt_uid == current->uid)
  61. rc = 0;
  62. else {
  63. rc = -EACCES;
  64. cFYI(1,("uids do not match"));
  65. }
  66. break;
  67. #ifdef CONFIG_CIFS_POSIX
  68. case FS_IOC_GETFLAGS:
  69. if(CIFS_UNIX_EXTATTR_CAP & caps) {
  70. if (pSMBFile == NULL)
  71. break;
  72. rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
  73. &ExtAttrBits, &ExtAttrMask);
  74. if(rc == 0)
  75. rc = put_user(ExtAttrBits &
  76. FS_FL_USER_VISIBLE,
  77. (int __user *)arg);
  78. }
  79. break;
  80. case FS_IOC_SETFLAGS:
  81. if(CIFS_UNIX_EXTATTR_CAP & caps) {
  82. if(get_user(ExtAttrBits,(int __user *)arg)) {
  83. rc = -EFAULT;
  84. break;
  85. }
  86. if (pSMBFile == NULL)
  87. break;
  88. /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
  89. extAttrBits, &ExtAttrMask);*/
  90. }
  91. cFYI(1,("set flags not implemented yet"));
  92. break;
  93. #endif /* CONFIG_CIFS_POSIX */
  94. default:
  95. cFYI(1,("unsupported ioctl"));
  96. break;
  97. }
  98. FreeXid(xid);
  99. return rc;
  100. }