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env: Implement the env delete command 

Implement a way to delete more than one variable at a time.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger 2012-12-11 22:16:36 -06:00 committed by Tom Rini
parent 24ab5a1914
commit 9d8d661d7f
1 changed files with 32 additions and 3 deletions
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35
common/cmd_nvedit.c
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@ -725,8 +725,36 @@ static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
printf("Not implemented yet\n");
return 0;
int env_flag = H_INTERACTIVE;
int ret = 0;
debug("Initial value for argc=%d\n", argc);
while (argc > 1 && **(argv + 1) == '-') {
char *arg = *++argv;
--argc;
while (*++arg) {
switch (*arg) {
case 'f': /* force */
env_flag |= H_FORCE;
break;
default:
return CMD_RET_USAGE;
}
}
}
debug("Final value for argc=%d\n", argc);
env_id++;
while (--argc > 0) {
char *name = *++argv;
if (!hdelete_r(name, &env_htab, env_flag))
ret = 1;
}
return ret;
}
#ifdef CONFIG_CMD_EXPORTENV
@ -995,7 +1023,7 @@ static cmd_tbl_t cmd_env_sub[] = {
U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
#endif
U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""),
U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
#if defined(CONFIG_CMD_EDITENV)
U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
#endif
@ -1060,6 +1088,7 @@ static char env_help_text[] =
#endif
"default [-f] -a - [forcibly] reset default environment\n"
"env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
"env delete [-f] var [...] - [forcibly] delete variable(s)\n"
#if defined(CONFIG_CMD_EDITENV)
"env edit name - edit environment variable\n"
#endif