modules/spl/spl-kobj.c

   1 #include <sys/kobj.h>
   2 #include "config.h"
   3
   4 struct _buf *
   5 kobj_open_file(const char *name)
   6 {
   7         struct _buf *file;
   8         vnode_t *vp;
   9         int rc;
  10
  11         if ((rc = vn_open(name, UIO_SYSSPACE, FREAD, 0644, &vp, 0, 0)))
  12                 return ((_buf_t *)-1UL);
  13
  14         file = kmalloc(sizeof(_buf_t), GFP_KERNEL);
  15         file->vp = vp;
  16
  17         return file;
  18 } /* kobj_open_file() */
  19 EXPORT_SYMBOL(kobj_open_file);
  20
  21 void
  22 kobj_close_file(struct _buf *file)
  23 {
  24         VOP_CLOSE(file->vp, 0, 0, 0, 0, 0);
  25         VN_RELE(file->vp);
  26         kfree(file);
  27
  28         return;
  29 } /* kobj_close_file() */
  30 EXPORT_SYMBOL(kobj_close_file);
  31
  32 int
  33 kobj_read_file(struct _buf *file, char *buf, ssize_t size, offset_t off)
  34 {
  35         return vn_rdwr(UIO_READ, file->vp, buf, size, off,
  36                        UIO_SYSSPACE, 0, RLIM64_INFINITY, 0, NULL);
  37 } /* kobj_read_file() */
  38 EXPORT_SYMBOL(kobj_read_file);
  39
  40 int
  41 kobj_get_filesize(struct _buf *file, uint64_t *size)
  42 {
  43         vattr_t vap;
  44         int rc;
  45
  46         rc = VOP_GETATTR(file->vp, &vap, 0, 0, NULL);
  47         if (rc)
  48                 return rc;
  49
  50         *size = vap.va_size;
  51
  52         return rc;
  53 } /* kobj_get_filesize() */
  54 EXPORT_SYMBOL(kobj_get_filesize);