int sysctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int retval;
int opt;
opt = getopt32(argv, "+neAapw"); /* '+' - stop on first non-option */
argv += optind;
opt ^= (FLAG_SHOW_KEYS | FLAG_SHOW_KEY_ERRORS);
option_mask32 ^= (FLAG_SHOW_KEYS | FLAG_SHOW_KEY_ERRORS);
if (opt & (FLAG_TABLE_FORMAT | FLAG_SHOW_ALL))
return sysctl_display_all(PROC_SYS);
if (opt & FLAG_PRELOAD_FILE)
return sysctl_preload_file_and_exit(*argv ? *argv : ETC_SYSCTL_CONF);
retval = 0;
while (*argv) {
if (opt & FLAG_WRITE)
retval |= sysctl_write_setting(*argv);
else
retval |= sysctl_read_setting(*argv);
argv++;
}
return retval;
} /* end sysctl_main() */
int sysctl_main(int argc, char **argv)
{
int retval = 0;
int output = 1;
int write_mode = 0;
int switches_allowed = 1;
if (argc < 2)
bb_show_usage();
argv++;
for (; argv && *argv && **argv; argv++) {
if (switches_allowed && **argv == '-') { /* we have a switch */
switch ((*argv)[1]) {
case 'n':
output = 0;
break;
case 'w':
write_mode = 1;
switches_allowed = 0;
break;
case 'p':
argv++;
return
sysctl_preload_file(((argv && *argv
&& **argv) ? *argv :
DEFAULT_PRELOAD), output);
case 'a':
case 'A':
switches_allowed = 0;
return sysctl_display_all(PROC_PATH, output,
((*argv)[1] == 'a') ? 0 : 1);
case 'h':
case '?':
bb_show_usage();
default:
bb_error_msg(ERR_UNKNOWN_PARAMETER, *argv);
bb_show_usage();
}
} else {
switches_allowed = 0;
if (write_mode)
retval = sysctl_write_setting(*argv, output);
else
sysctl_read_setting(*argv, output);
}
}
return retval;
} /* end sysctl_main() */
static int sysctl_preload_file_and_exit(const char *filename)
{
int lineno;
char oneline[PRELOAD_BUF];
char buffer[PRELOAD_BUF];
char *name, *value;
FILE *fp;
fp = xfopen(filename, "r");
lineno = 0;
while (fgets(oneline, sizeof(oneline) - 1, fp)) {
lineno++;
trim(oneline);
if (oneline[0] == '#' || oneline[0] == ';')
continue;
if (!oneline[0] || !oneline[1])
continue;
name = strtok(oneline, "=");
if (!name) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
trim(name);
if (!*name) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
value = strtok(NULL, "\n\r");
if (!value) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
while (*value == ' ' || *value == '\t')
value++;
if (!*value) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
/* safe because sizeof(oneline) == sizeof(buffer) */
sprintf(buffer, "%s=%s", name, value);
sysctl_write_setting(buffer);
}
if (ENABLE_FEATURE_CLEAN_UP)
fclose(fp);
return 0;
} /* end sysctl_preload_file_and_exit() */
int sysctl_preload_file(const char *filename, int output)
{
int lineno = 0;
char oneline[PRELOAD_BUF];
char buffer[PRELOAD_BUF];
char *name, *value, *ptr;
FILE *fp = NULL;
if (!filename || ((fp = fopen(filename, "r")) == NULL)) {
bb_error_msg_and_die(ERR_PRELOAD_FILE, filename);
}
while (fgets(oneline, sizeof(oneline) - 1, fp)) {
oneline[sizeof(oneline) - 1] = 0;
lineno++;
trim(oneline);
ptr = (char *) oneline;
if (*ptr == '#' || *ptr == ';')
continue;
if (bb_strlen(ptr) < 2)
continue;
name = strtok(ptr, "=");
if (!name || !*name) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
trim(name);
value = strtok(NULL, "\n\r");
if (!value || !*value) {
bb_error_msg(WARN_BAD_LINE, filename, lineno);
continue;
}
while ((*value == ' ' || *value == '\t') && *value != 0)
value++;
strcpy(buffer, name);
strcat(buffer, "=");
strcat(buffer, value);
sysctl_write_setting(buffer, output);
}
fclose(fp);
return 0;
} /* end sysctl_preload_file() */