openwrt/package/nvram/src/wl.c

   1 /*
   2  * Wireless network adapter utilities
   3  *
   4  * Copyright 2004, Broadcom Corporation
   5  * All Rights Reserved.
   6  *
   7  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
   8  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
   9  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  10  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  11  *
  12  * $Id$
  13  */
  14 #include <string.h>
  15
  16 #include <typedefs.h>
  17 #include <wlutils.h>
  18
  19 int
  20 wl_probe(char *name)
  21 {
  22         int ret, val;
  23
  24         /* Check interface */
  25         if ((ret = wl_ioctl(name, WLC_GET_MAGIC, &val, sizeof(val))))
  26                 return ret;
  27         if (val != WLC_IOCTL_MAGIC)
  28                 return -1;
  29         if ((ret = wl_ioctl(name, WLC_GET_VERSION, &val, sizeof(val))))
  30                 return ret;
  31         if (val > WLC_IOCTL_VERSION)
  32                 return -1;
  33
  34         return ret;
  35 }
  36
  37 int
  38 wl_set_val(char *name, char *var, void *val, int len)
  39 {
  40         char buf[128];
  41         int buf_len;
  42
  43         /* check for overflow */
  44         if ((buf_len = strlen(var)) + 1 + len > sizeof(buf))
  45                 return -1;
  46
  47         strcpy(buf, var);
  48         buf_len += 1;
  49
  50         /* append int value onto the end of the name string */
  51         memcpy(&buf[buf_len], val, len);
  52         buf_len += len;
  53
  54         return wl_ioctl(name, WLC_SET_VAR, buf, buf_len);
  55 }
  56
  57 int
  58 wl_get_val(char *name, char *var, void *val, int len)
  59 {
  60         char buf[128];
  61         int ret;
  62
  63         /* check for overflow */
  64         if (strlen(var) + 1 > sizeof(buf) || len > sizeof(buf))
  65                 return -1;
  66
  67         strcpy(buf, var);
  68         if ((ret = wl_ioctl(name, WLC_GET_VAR, buf, sizeof(buf))))
  69                 return ret;
  70
  71         memcpy(val, buf, len);
  72         return 0;
  73 }
  74
  75 int
  76 wl_set_int(char *name, char *var, int val)
  77 {
  78         return wl_set_val(name, var, &val, sizeof(val));
  79 }
  80
  81 int
  82 wl_get_int(char *name, char *var, int *val)
  83 {
  84         return wl_get_val(name, var, val, sizeof(*val));
  85 }
  86