lib/libvboxfs/path.c

   1 /* Part of libvboxfs - (c) 2012, D.C. van Moolenbroek */
   2
   3 #include "inc.h"
   4
   5 /*
   6  * Store a local path name in the given path object, performing any necessary
   7  * conversions.  The path object is expected to be used read-only, so the size
   8  * of the path object is set as small as possible.  If 'name' is NULL, the path
   9  * will be initialized to the empty string.
  10  */
  11 int
  12 vboxfs_set_path(vboxfs_path_t *path, char *name)
  13 {
  14         size_t len;
  15
  16         len = strlen(name);
  17
  18         /* FIXME: missing UTF-8 conversion */
  19
  20         if (len >= sizeof(path->data))
  21                 return ENAMETOOLONG;
  22
  23         strcpy(path->data, name);
  24
  25         path->len = len;
  26         path->size = len + 1;
  27
  28         return OK;
  29 }
  30
  31 /*
  32  * Retrieve the path name from the given path object.  Make sure the name fits
  33  * in the given name buffer first.  The given size must include room for a
  34  * terminating null character.
  35  */
  36 int
  37 vboxfs_get_path(vboxfs_path_t *path, char *name, size_t size)
  38 {
  39
  40         /* FIXME: missing UTF-8 conversion */
  41
  42         if (path->len >= size)
  43                 return ENAMETOOLONG;
  44
  45         assert(path->data[path->len] == 0);
  46
  47         strcpy(name, path->data);
  48
  49         return OK;
  50 }
  51
  52 /*
  53  * Return the byte size of a previously initialized path object.
  54  */
  55 size_t
  56 vboxfs_get_path_size(vboxfs_path_t *path)
  57 {
  58
  59         return offsetof(vboxfs_path_t, data) + path->size;
  60 }