void set_env(t_all *all, char *var, char *value)
{
char *newenv;
char **env2del;
env2del = NULL;
ASSERT_F(var, NULL, NO_ENV2SET);
newenv = ft_kebab(var, "=", value, NULL);
if ((env2del = get_env_addr(all->env.env, newenv)) != NULL)
modify_env(all, env2del, newenv);
else
{
if ((all->env.env = ft_2dchar_add(all->env.env, newenv)) == NULL)
ft_error(all, SYSCALL_FAIL);
}
}
char *getenv (bd_t * bd, uchar *name)
{
int i, nxt;
for (i=0; get_env_char(bd, i) != '\0'; i=nxt+1) {
int val;
for (nxt=i; get_env_char(bd, nxt) != '\0'; ++nxt) {
if (nxt >= sizeof(bd->bi_env_data)) {
return (NULL);
}
}
if ((val=envmatch(bd, name, i)) < 0)
continue;
return (get_env_addr(bd, val));
}
return (NULL);
}
void unset_env(t_all *all, char *var)
{
char **env2del;
int i;
i = 1;
env2del = NULL;
ASSERT_F(var, NULL, NO_ENV2UNSET);
if ((env2del = get_env_addr(all->env.env, var)) != NULL)
{
free(*env2del);
while (env2del[i])
{
env2del[i - 1] = env2del[i];
i++;
}
env2del[i - 1] = 0;
if (ft_strequ(var, "PATH"))
ft_2dchardel(&all->env.path_dir);
}
else
error_no_quit(NO_ENV2UNSET, all);
}
int _do_setenv (bd_t *bd, int flag, int argc, char *argv[])
{
int i, len, oldval;
uchar *env, *nxt = 0;
uchar *name;
/* need writable copy in RAM */
if (!bd->bi_env_data)
return 1;
name = argv[1];
/*
* search if variable with this name already exists
*/
oldval = -1;
for (env = bd->bi_env_data; *env; env = nxt+1) {
for (nxt = env; *nxt; ++nxt)
;
if ((oldval = envmatch(bd, name, (ulong)env - (ulong)bd->bi_env_data)) >= 0)
break;
}
/*
* Delete any existing definition
*/
if (oldval >= 0) {
#ifndef CONFIG_ENV_OVERWRITE
/*
* Ethernet Address and serial# can be set only once
*/
if ( (strcmp (name, "serial#") == 0) ||
((strcmp (name, "ethaddr") == 0)
# if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
&& (strcmp (get_env_addr(bd, oldval),MK_STR(CONFIG_ETHADDR)) != 0)
# endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
) ) {
printf ("Can't overwrite \"%s\"\n", name);
return 1;
}
#endif
/*
* Switch to new baudrate if new baudrate is supported
*/
if (strcmp(argv[1],"baudrate") == 0) {
int baudrate = simple_strtoul(argv[2], NULL, 10);
int i;
for (i=0; i<N_BAUDRATES; ++i) {
if (baudrate == baudrate_table[i])
break;
}
if (i == N_BAUDRATES) {
printf ("## Baudrate %d bps not supported\n",
baudrate);
return 1;
}
printf ("## Switch baudrate to %d bps and press ENTER ...\n",
baudrate);
udelay(50000);
serial_setbrg (bd, baudrate);
udelay(50000);
for (;;) {
if (getc() == '\r')
break;
}
bd->bi_baudrate = baudrate;
}
if (*++nxt == '\0') {
if ((ulong)env > (ulong)bd->bi_env_data) {
env--;
} else {
*env = '\0';
}
} else {
for (;;) {
*env = *nxt++;
if ((*env == '\0') && (*nxt == '\0'))
break;
++env;
}
}
*++env = '\0';
}
/* Delete only ? */
if ((argc < 3) || argv[2] == NULL) {
/* Update CRC */
bd->bi_env_crc = crc32(0, bd->bi_env_data, sizeof(bd->bi_env_data));
return 0;
}
/*
* Append new definition at the end
*/
for (env = bd->bi_env_data; *env || *(env+1); ++env)
;
if ((ulong)env > (ulong)bd->bi_env_data)
++env;
/*
* Overflow when:
* "name" + "=" + "val" +"\0\0" >
* sizeof(bd->bi_env_data) - (env-bd->bi_env_data)
*/
len = strlen(name) + 2;
/* add '=' for first arg, ' ' for all others */
for (i=2; i<argc; ++i) {
len += strlen(argv[i]) + 1;
}
if (len > sizeof(bd->bi_env_data)) {
printf ("## Error: environment overflow, \"%s\" deleted\n", name);
return 1;
}
while ((*env = *name++) != '\0')
env++;
for (i=2; i<argc; ++i) {
char *val = argv[i];
*env = (i==2) ? '=' : ' ';
while ((*++env = *val++) != '\0')
;
}
/* end is marked with double '\0' */
*++env = '\0';
/* Update CRC */
bd->bi_env_crc = crc32(0, bd->bi_env_data, sizeof(bd->bi_env_data));
/*
* Some variables should be updated when the corresponding
* entry in the enviornment is changed
*/
if (strcmp(argv[1],"ethaddr") == 0) {
char *s = argv[2]; /* always use only one arg */
char *e;
for (i=0; i<6; ++i) {
bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
if (s) s = (*e) ? e+1 : e;
}
return 0;
}
#if (CONFIG_COMMANDS & CFG_CMD_NET)
if (strcmp(argv[1],"ipaddr") == 0) {
char *s = argv[2]; /* always use only one arg */
bd->bi_ip_addr = string_to_ip(s);
return 0;
}
#endif
if (strcmp(argv[1],"loadaddr") == 0) {
load_addr = simple_strtoul(argv[2], NULL, 16);
return 0;
}
if (strcmp(argv[1],"pagelength") == 0) {
pagelength = simple_strtoul(argv[2], NULL, 10);
return 0;
}
#if (CONFIG_COMMANDS & CFG_CMD_NET)
if (strcmp(argv[1],"bootfile") == 0) {
copy_filename (BootFile, argv[2], sizeof(BootFile));
return 0;
}
#endif /* CFG_CMD_NET */
#ifdef CONFIG_KEYBOARD
if (strcmp(argv[1],"keymap") == 0) {
kbd_mapping (argv[2]);
return 0;
}
#endif /* CONFIG_KEYBOARD */
#ifdef CONFIG_ADJUST_LCD
if (strcmp(argv[1],"contrast") == 0) {
lcd_contrast(simple_strtoul(argv[2], NULL, 10));
return 0;
}
if (strcmp(argv[1],"brightness") == 0) {
lcd_brightness(simple_strtoul(argv[2], NULL, 10));
return 0;
}
#endif /* CONFIG_ADJUST_LCD */
return 0;
}