fs/skeleton/usr/bin/hnvram.platform_gfiberlt

#!/usr/bin/python

# GFLT* uses sysvar_cmd to read/write flash instead of hnvram.
# ginstall wants to call hnvram like:
# hnvram -w VAR1=val1 -w VAR2=val2 -w VAR3=val3
#
# This will translate those into sysvar_cmd calls.

import subprocess
import sys

SYSVAR_CMD = '/usr/bin/sysvar_cmd'


def Usage():
  print 'Usage: hnvram -w var1=val1 -w var2=val2 ...'


def main():
  if len(sys.argv) < 3:
    Usage()
    sys.exit(1)

  vars_to_set = {}
  idx = 1
  # iterate through args and collect writes together.
  while idx < len(sys.argv):
    arg = sys.argv[idx]
    if arg == '-w':
      if idx+1 == len(sys.argv):
        Usage()
        sys.exit(1)
      arg = sys.argv[idx+1]
      key_val = arg.split('=', 1)
      if len(key_val) != 2:
        Usage()
        sys.exit(1)
      vars_to_set[key_val[0]] = key_val[1]
      idx += 2
    else:
      print 'Ignoring unknown flag: %s' % (arg,)
      idx += 1

  # Now we should have a map of key,values
  retval = 0
  for k, v in vars_to_set.iteritems():
    retval |= subprocess.call([SYSVAR_CMD, '--set', k, v])
  sys.exit(retval)

if __name__ == '__main__':
  main()