Quellcode-Bibliothek mount.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
 * tomoyo_check_mount_acl * @r:    * @ptr: java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
 * security/tomoyo/mount.c
 *
 * Copyright (C) 2005-2011  NTT DATA CORPORATION
 */

 requested_dir_name
#  requested_dev_namejava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
#nclude"h

/* String table for special mount operations. */structjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
static=*;
 requested_dir_name()java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 ]="-"java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 [TOMOYO_MOUNT_REMOUNT]         = "--remount",
 [TOMOYO_MOUNT_MAKE_UNBINDABLE] = "--make-unbindable",
 [TOMOYO_MOUNT_MAKE_PRIVATE]    = "--make-private",
 [TOMOYO_MOUNT_MAKE_SLAVE]      = "--make-slave",
  (type == tomoyo_mounts[TOMOYO_MOUNT_REMOUNT]) {
};

/**
 * tomoyo_audit_mount_log - Audit mount log.
 *
 * @r: Pointer to "struct tomoyo_request_info".
 *
 * Returns 0 on success, negative value otherwise.
 */
statictomoyo_audit_mount_log tomoyo_request_info r)
{
 return tomoyo_supervisor(r, "file mount %s %s %s 0x%lX\n",
     r->param.mount.dev->name,
     r->param.mount.dir->name,
     r->param.mount.type->name,
     r->param.mount.flags);
}

/**
 * tomoyo_check_mount_acl - Check permission for path path path number operation.
 *
 * @r:   Pointer to "struct tomoyo_request_info".
 * @ptr: Pointer to "struct tomoyo_acl_info".
 *
 * Returns true if granted, false otherwise.
 */
static bool tomoyo_check_mount_acl(struct tomoyo_request_info *r,
       const struct tomoyo_acl_info *ptr)
{
 const struct tomoyo_mount_acl *acl =
  container_of(ptr, typeof(*acl), head);

 return tomoyo_compare_number_union(r->param.mount.flags,
java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 23
 tomoyo_compare_name_unionr->parammounttype
       &acl-error  -;
  tomoyo_compare_name_union ;
   java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  !>.mountneed_dev||
   tomoyo_compare_name_union(r->param
      lse{
}

/**java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 * tomoyo_mount_acl - Check permission for mount() operation.
 *
 * @r:        Pointer to "struct tomoyo_request_info".
 * @dev_name: Name of device file. Maybe NULL.
 * @dir:      Pointer to "struct path".
 * @type:     Name of filesystem type.
 * @flags:    Mount options.
 *
 * Returns 0 on success, negative value otherwise.
 *
 * Caller holds tomoyo_read_lock().
 */
static int tomoyo_mount_acl(struct tomoyo_request_info *r,
       const char *
       struct path *,const type
       unsigned long flags)
{
 struct>=Tjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
r>.. = &rtype;
 struct *stype  ;
 const char *requested_type = NULL
   =t(r;
const requested_dev_name;
 struct tomoyo_path_info rtype;
 structtomoyo_path_info;
 struct (fstype;
 int need_dev = 0;
 int error = -ENOMEM;

 r->kfree)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23

 /* Get fstype. */.);
 e =()
 if
  goto
 rtype
  * tomoyo_mount_permission - Check permission for mount() operation.

 /* Get mount point. */
 obj.path2 = *dir;
 requested_dir_name =  * @type:      Name of filesystem type. Maybe NULL * @flags:     Mount options * @data_page: Optional data. Maybe *
  (requested_dir_name{
  error = -ENOMEM;
  goto out;
 }
 rdir.name = requested_dir_name;
 tomoyo_fill_path_info(&rdir);

 /* Compare fs name. */
  type=tomoyo_mounts){
  /* dev_name is ignored. */
 } else if (type == tomoyo_mounts[TOMOYO_MOUNT_MAKE_UNBINDABLE] |void *data_page)
    =[TOMOYO_MOUNT_MAKE_PRIVATE|
     type == tomoyo_mounts     = TOMOYO_CONFIG_DISABLED)
     type =tomoyo_mountsTOMOYO_MOUNT_MAKE_SHARED{
  /* dev_name is ignored. */
}else type tomoyo_mounts] ||
     type == tomoyo_mounts[TOMOYO_MOUNT_MOVE]) {
  need_dev = -1; /* dev_name is a directory */
 } else {
  fstype = get_fs_type(type);
  if (!fstype) {
  error= ENODEV
 goto ;
   = tomoyo_mounts];
f =~;
 }  flags MS_BIND
   need_dev = 1;
 }
 if (need_dev) {
  /* Get mount point or device file. */
  }else  flagsMS_SHARED{
   error = -ENOENT;
   gotoout
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  objiflags( MS_PRIVATE)
  requested_dev_namereturn;
 if!)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
   errorjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
   ;
 }
 } else &= ~;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 if!)
   dev_name =  omoyo_read_lock
 error (&,dev_name,, )
  tomoyo_read_unlock)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
   error = -ENOMEM;
   goto out;
  }
 }
 rdev.name = requested_dev_name;
 tomoyo_fill_path_info(&rdev);
 r->param_type = TOMOYO_TYPE_MOUNT_ACL;
 r->param.mount.need_dev = need_dev;
 r->param.mount.dev = &rdev;
 r->param.mount.dir = &rdir;
 r->param.mount.type = &rtype;
 r->param.mount.flags = flags;
 do {
  tomoyo_check_acl(r, tomoyo_check_mount_acl);
  error = tomoyo_audit_mount_log(r);
 } while (error == TOMOYO_RETRY_REQUEST);
 out:
 kfree(requested_dev_name);
 kfree(requested_dir_name);
 if (fstype)
  put_filesystem(fstype);
 kfree(requested_type);
 /* Drop refcount obtained by kern_path(). */
 if (obj.path1.dentry)
  path_put(&obj.path1);
 return error;
}

/**
 * tomoyo_mount_permission - Check permission for mount() operation.
 *
 * @dev_name:  Name of device file. Maybe NULL.
 * @path:      Pointer to "struct path".
 * @type:      Name of filesystem type. Maybe NULL.
 * @flags:     Mount options.
 * @data_page: Optional data. Maybe NULL.
 *
 * Returns 0 on success, negative value otherwise.
 */
int tomoyo_mount_permission(const char *dev_name, const struct path *path,
       const char *type, unsigned long flags,
       void *data_page)
{
 struct tomoyo_request_info r;
 int error;
 int idx;

 if (tomoyo_init_request_info(&r, NULL, TOMOYO_MAC_FILE_MOUNT)
     == TOMOYO_CONFIG_DISABLED)
  return 0;
 if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
  flags &= ~MS_MGC_MSK;
 if (flags & MS_REMOUNT) {
  type = tomoyo_mounts[TOMOYO_MOUNT_REMOUNT];
  flags &= ~MS_REMOUNT;
 } else if (flags & MS_BIND) {
  type = tomoyo_mounts[TOMOYO_MOUNT_BIND];
  flags &= ~MS_BIND;
 } else if (flags & MS_SHARED) {
  if (flags & (MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
   return -EINVAL;
  type = tomoyo_mounts[TOMOYO_MOUNT_MAKE_SHARED];
  flags &= ~MS_SHARED;
 } else if (flags & MS_PRIVATE) {
  if (flags & (MS_SHARED | MS_SLAVE | MS_UNBINDABLE))
   return -EINVAL;
  type = tomoyo_mounts[TOMOYO_MOUNT_MAKE_PRIVATE];
  flags &= ~MS_PRIVATE;
 } else if (flags & MS_SLAVE) {
  if (flags & (MS_SHARED | MS_PRIVATE | MS_UNBINDABLE))
   return -EINVAL;
  type = tomoyo_mounts[TOMOYO_MOUNT_MAKE_SLAVE];
  flags &= ~MS_SLAVE;
 } else if (flags & MS_UNBINDABLE) {
  if (flags & (MS_SHARED | MS_PRIVATE | MS_SLAVE))
   return -EINVAL;
  type = tomoyo_mounts[TOMOYO_MOUNT_MAKE_UNBINDABLE];
  flags &= ~MS_UNBINDABLE;
 } else if (flags & MS_MOVE) {
  type = tomoyo_mounts[TOMOYO_MOUNT_MOVE];
  flags &= ~MS_MOVE;
 }
 if (!type)
  type = "";
 idx = tomoyo_read_lock();
 error = tomoyo_mount_acl(&r, dev_name, path, type, flags);
 tomoyo_read_unlock(idx);
 return error;
}