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add example usage to hello command

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This commit is contained in:
BVK Chaitanya 2010-06-10 12:12:03 +05:30
parent 3db1c9eee4
commit 28be0e94db
34 changed files with 220 additions and 102 deletions
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38
hello/hello.c
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@ -26,12 +26,36 @@
#include <grub/extcmd.h>
#include <grub/i18n.h>
static struct grub_script *script;
static grub_err_t
grub_cmd_hello (struct grub_extcmd *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
grub_cmd_hello (grub_extcmd_context_t ctxt,
int argc, char **args __attribute__ ((unused)))
{
grub_printf ("Hello World\n");
if (argc == 0 && script == 0)
grub_printf ("Hello World\n");
else if (argc == 0)
grub_script_execute (script);
else
{
if (! ctxt->script_params || ! ctxt->script_params[0])
return 1;
if (script)
grub_script_free (script);
script = grub_malloc (sizeof (*script));
if (! script)
return 1;
script->cmd = ctxt->script_params[0]->cmd;
script->mem = ctxt->script_params[0]->mem;
ctxt->script_params[0]->cmd = 0;
ctxt->script_params[0]->mem = 0;
}
return 0;
}
@ -39,11 +63,15 @@ static grub_extcmd_t cmd;
GRUB_MOD_INIT(hello)
{
cmd = grub_register_extcmd ("hello", grub_cmd_hello, GRUB_COMMAND_FLAG_BOTH,
cmd = grub_register_extcmd ("hello", grub_cmd_hello,
GRUB_COMMAND_FLAG_BOTH | GRUB_COMMAND_FLAG_BLOCKS,
0, N_("Say \"Hello World\"."), 0);
}
GRUB_MOD_FINI(hello)
{
if (script)
grub_script_free (script);
grub_unregister_extcmd (cmd);
}