static int adm_control(struct udev *udev, int argc, char *argv[])
{
struct udev_ctrl *uctrl = NULL;
int timeout = 60;
int rc = 1;
static const struct option options[] = {
{ "exit", no_argument, NULL, 'e' },
{ "log-priority", required_argument, NULL, 'l' },
{ "stop-exec-queue", no_argument, NULL, 's' },
{ "start-exec-queue", no_argument, NULL, 'S' },
{ "reload-rules", no_argument, NULL, 'R' },
{ "property", required_argument, NULL, 'p' },
{ "env", required_argument, NULL, 'p' },
{ "children-max", required_argument, NULL, 'm' },
{ "timeout", required_argument, NULL, 't' },
{ "help", no_argument, NULL, 'h' },
{}
};
if (getuid() != 0) {
fprintf(stderr, "root privileges required\n");
return 1;
}
uctrl = udev_ctrl_new(udev);
if (uctrl == NULL)
return 2;
for (;;) {
int option;
option = getopt_long(argc, argv, "el:sSRp:m:h", options, NULL);
if (option == -1)
break;
switch (option) {
case 'e':
if (udev_ctrl_send_exit(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'l': {
int i;
i = util_log_priority(optarg);
if (i < 0) {
fprintf(stderr, "invalid number '%s'\n", optarg);
goto out;
}
if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0)
rc = 2;
else
rc = 0;
break;
}
case 's':
if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'S':
if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'R':
if (udev_ctrl_send_reload_rules(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'p':
if (strchr(optarg, '=') == NULL) {
fprintf(stderr, "expect <KEY>=<value> instead of '%s'\n", optarg);
goto out;
}
if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'm': {
char *endp;
int i;
i = strtoul(optarg, &endp, 0);
if (endp[0] != '\0' || i < 1) {
fprintf(stderr, "invalid number '%s'\n", optarg);
goto out;
}
if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0)
rc = 2;
else
rc = 0;
break;
}
case 't': {
int seconds;
seconds = atoi(optarg);
if (seconds >= 0)
timeout = seconds;
else
fprintf(stderr, "invalid timeout value\n");
break;
}
case 'h':
print_help();
rc = 0;
break;
}
}
if (argv[optind] != NULL)
fprintf(stderr, "unknown option\n");
else if (optind == 1)
fprintf(stderr, "missing option\n");
out:
udev_ctrl_unref(uctrl);
return rc;
}
/**
* udev_new:
*
* Create udev library context. This reads the udev configuration
* file, and fills in the default values.
*
* The initial refcount is 1, and needs to be decremented to
* release the resources of the udev library context.
*
* Returns: a new udev library context
**/
_public_ struct udev *udev_new(void) {
struct udev *udev;
_cleanup_fclose_ FILE *f = NULL;
udev = new0(struct udev, 1);
if (udev == NULL)
return NULL;
udev->refcount = 1;
f = fopen("/etc/udev/udev.conf", "re");
if (f != NULL) {
char line[UTIL_LINE_SIZE];
unsigned line_nr = 0;
while (fgets(line, sizeof(line), f)) {
size_t len;
char *key;
char *val;
line_nr++;
/* find key */
key = line;
while (isspace(key[0]))
key++;
/* comment or empty line */
if (key[0] == '#' || key[0] == '\0')
continue;
/* split key/value */
val = strchr(key, '=');
if (val == NULL) {
log_debug("/etc/udev/udev.conf:%u: missing assignment, skipping line.", line_nr);
continue;
}
val[0] = '\0';
val++;
/* find value */
while (isspace(val[0]))
val++;
/* terminate key */
len = strlen(key);
if (len == 0)
continue;
while (isspace(key[len-1]))
len--;
key[len] = '\0';
/* terminate value */
len = strlen(val);
if (len == 0)
continue;
while (isspace(val[len-1]))
len--;
val[len] = '\0';
if (len == 0)
continue;
/* unquote */
if (val[0] == '"' || val[0] == '\'') {
if (val[len-1] != val[0]) {
log_debug("/etc/udev/udev.conf:%u: inconsistent quoting, skipping line.", line_nr);
continue;
}
val[len-1] = '\0';
val++;
}
if (streq(key, "udev_log")) {
int prio;
prio = util_log_priority(val);
if (prio < 0)
log_debug("/etc/udev/udev.conf:%u: invalid log level '%s', ignoring.", line_nr, val);
else
log_set_max_level(prio);
continue;
}
}
}
return udev;
}
static int adm_control(struct udev *udev, int argc, char *argv[]) {
_cleanup_udev_ctrl_unref_ struct udev_ctrl *uctrl = NULL;
int timeout = 60;
int rc = 1, c;
static const struct option options[] = {
{ "exit", no_argument, NULL, 'e' },
{ "log-priority", required_argument, NULL, 'l' },
{ "stop-exec-queue", no_argument, NULL, 's' },
{ "start-exec-queue", no_argument, NULL, 'S' },
{ "reload", no_argument, NULL, 'R' },
{ "reload-rules", no_argument, NULL, 'R' }, /* alias for -R */
{ "property", required_argument, NULL, 'p' },
{ "env", required_argument, NULL, 'p' }, /* alias for -p */
{ "children-max", required_argument, NULL, 'm' },
{ "timeout", required_argument, NULL, 't' },
{ "version", no_argument, NULL, 'V' },
{ "help", no_argument, NULL, 'h' },
{}
};
if (must_be_root() < 0)
return 1;
uctrl = udev_ctrl_new(udev);
if (uctrl == NULL)
return 2;
while ((c = getopt_long(argc, argv, "el:sSRp:m:t:Vh", options, NULL)) >= 0)
switch (c) {
case 'e':
if (udev_ctrl_send_exit(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'l': {
int i;
i = util_log_priority(optarg);
if (i < 0) {
log_error("invalid number '%s'", optarg);
return rc;
}
if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg), timeout) < 0)
rc = 2;
else
rc = 0;
break;
}
case 's':
if (udev_ctrl_send_stop_exec_queue(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'S':
if (udev_ctrl_send_start_exec_queue(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'R':
if (udev_ctrl_send_reload(uctrl, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'p':
if (strchr(optarg, '=') == NULL) {
log_error("expect <KEY>=<value> instead of '%s'", optarg);
return rc;
}
if (udev_ctrl_send_set_env(uctrl, optarg, timeout) < 0)
rc = 2;
else
rc = 0;
break;
case 'm': {
char *endp;
int i;
i = strtoul(optarg, &endp, 0);
if (endp[0] != '\0' || i < 1) {
log_error("invalid number '%s'", optarg);
return rc;
}
if (udev_ctrl_send_set_children_max(uctrl, i, timeout) < 0)
rc = 2;
else
rc = 0;
break;
}
case 't': {
usec_t s;
int seconds;
int r;
r = parse_sec(optarg, &s);
if (r < 0)
return log_error_errno(r, "Failed to parse timeout value '%s'.", optarg);
if (((s + USEC_PER_SEC - 1) / USEC_PER_SEC) > INT_MAX)
log_error("Timeout value is out of range.");
else {
seconds = s != USEC_INFINITY ? (int) ((s + USEC_PER_SEC - 1) / USEC_PER_SEC) : INT_MAX;
timeout = seconds;
rc = 0;
}
break;
}
case 'V':
print_version();
rc = 0;
break;
case 'h':
print_help();
rc = 0;
break;
}
if (optind < argc)
log_error("Extraneous argument: %s", argv[optind]);
else if (optind == 1)
log_error("Option missing");
return rc;
}
/**
* udev_new:
*
* Create udev library context.
*
* The initial refcount is 1, and needs to be decremented to
* release the resources of the udev library context.
*
* Returns: a new udev library context
**/
struct udev *udev_new(void)
{
struct udev *udev;
const char *env;
char *config_file;
FILE *f;
udev = calloc(1, sizeof(struct udev));
if (udev == NULL)
return NULL;
udev->refcount = 1;
udev->log_fn = log_stderr;
udev->log_priority = LOG_ERR;
udev_list_init(&udev->properties_list);
udev->run = 1;
udev->dev_path = strdup(UDEV_PREFIX "/dev");
udev->sys_path = strdup("/sys");
config_file = strdup(SYSCONFDIR "/udev/udev.conf");
if (udev->dev_path == NULL ||
udev->sys_path == NULL ||
config_file == NULL)
goto err;
/* settings by environment and config file */
env = getenv("SYSFS_PATH");
if (env != NULL) {
free(udev->sys_path);
udev->sys_path = strdup(env);
util_remove_trailing_chars(udev->sys_path, '/');
udev_add_property(udev, "SYSFS_PATH", udev->sys_path);
}
env = getenv("UDEV_RUN");
if (env != NULL && strcmp(env, "0") == 0)
udev->run = 0;
env = getenv("UDEV_CONFIG_FILE");
if (env != NULL) {
free(config_file);
config_file = strdup(env);
util_remove_trailing_chars(config_file, '/');
}
if (config_file == NULL)
goto err;
f = fopen(config_file, "r");
if (f != NULL) {
char line[UTIL_LINE_SIZE];
int line_nr = 0;
while (fgets(line, sizeof(line), f)) {
size_t len;
char *key;
char *val;
line_nr++;
/* find key */
key = line;
while (isspace(key[0]))
key++;
/* comment or empty line */
if (key[0] == '#' || key[0] == '\0')
continue;
/* split key/value */
val = strchr(key, '=');
if (val == NULL) {
err(udev, "missing <key>=<value> in '%s'[%i], skip line\n", config_file, line_nr);
continue;
}
val[0] = '\0';
val++;
/* find value */
while (isspace(val[0]))
val++;
/* terminate key */
len = strlen(key);
if (len == 0)
continue;
while (isspace(key[len-1]))
len--;
key[len] = '\0';
/* terminate value */
len = strlen(val);
if (len == 0)
continue;
while (isspace(val[len-1]))
len--;
val[len] = '\0';
if (len == 0)
continue;
/* unquote */
if (val[0] == '"' || val[0] == '\'') {
if (val[len-1] != val[0]) {
err(udev, "inconsistent quoting in '%s'[%i], skip line\n", config_file, line_nr);
continue;
}
val[len-1] = '\0';
val++;
}
if (strcasecmp(key, "udev_log") == 0) {
udev_set_log_priority(udev, util_log_priority(val));
continue;
}
if (strcasecmp(key, "udev_root") == 0) {
free(udev->dev_path);
udev->dev_path = strdup(val);
util_remove_trailing_chars(udev->dev_path, '/');
continue;
}
if (strcasecmp(key, "udev_rules") == 0) {
free(udev->rules_path);
udev->rules_path = strdup(val);
util_remove_trailing_chars(udev->rules_path, '/');
continue;
}
}
fclose(f);
}
env = getenv("UDEV_ROOT");
if (env != NULL) {
free(udev->dev_path);
udev->dev_path = strdup(env);
util_remove_trailing_chars(udev->dev_path, '/');
udev_add_property(udev, "UDEV_ROOT", udev->dev_path);
}
env = getenv("UDEV_LOG");
if (env != NULL)
udev_set_log_priority(udev, util_log_priority(env));
if (udev->dev_path == NULL || udev->sys_path == NULL)
goto err;
dbg(udev, "context %p created\n", udev);
dbg(udev, "log_priority=%d\n", udev->log_priority);
dbg(udev, "config_file='%s'\n", config_file);
dbg(udev, "dev_path='%s'\n", udev->dev_path);
dbg(udev, "sys_path='%s'\n", udev->sys_path);
if (udev->rules_path != NULL)
dbg(udev, "rules_path='%s'\n", udev->rules_path);
free(config_file);
return udev;
err:
free(config_file);
err(udev, "context creation failed\n");
udev_unref(udev);
return NULL;
}
int udevadm_control(struct udev *udev, int argc, char *argv[])
{
struct udev_ctrl *uctrl = NULL;
int rc = 1;
/* compat values with '_' will be removed in a future release */
static const struct option options[] = {
{ "log-priority", required_argument, NULL, 'l' },
{ "stop-exec-queue", no_argument, NULL, 's' },
{ "start-exec-queue", no_argument, NULL, 'S' },
{ "reload-rules", no_argument, NULL, 'R' },
{ "property", required_argument, NULL, 'p' },
{ "env", required_argument, NULL, 'p' },
{ "max-childs", required_argument, NULL, 'm' },
{ "help", no_argument, NULL, 'h' },
{}
};
if (getuid() != 0) {
fprintf(stderr, "root privileges required\n");
return 1;
}
uctrl = udev_ctrl_new_from_socket(udev, UDEV_CTRL_SOCK_PATH);
if (uctrl == NULL)
return 2;
while (1) {
int option;
int i;
char *endp;
option = getopt_long(argc, argv, "l:sSRp:m:M:h", options, NULL);
if (option == -1)
break;
switch (option) {
case 'l':
i = util_log_priority(optarg);
if (i < 0) {
fprintf(stderr, "invalid number '%s'\n", optarg);
goto exit;
}
if (udev_ctrl_send_set_log_level(uctrl, util_log_priority(optarg)) < 0)
rc = 2;
else
rc = 0;
break;
case 's':
if (udev_ctrl_send_stop_exec_queue(uctrl) < 0)
rc = 2;
else
rc = 0;
break;
case 'S':
if (udev_ctrl_send_start_exec_queue(uctrl) < 0)
rc = 2;
else
rc = 0;
break;
case 'R':
if (udev_ctrl_send_reload_rules(uctrl) < 0)
rc = 2;
else
rc = 0;
break;
case 'p':
if (strchr(optarg, '=') == NULL) {
fprintf(stderr, "expect <KEY>=<value> instead of '%s'\n", optarg);
goto exit;
}
if (udev_ctrl_send_set_env(uctrl, optarg) < 0)
rc = 2;
else
rc = 0;
break;
case 'm':
i = strtoul(optarg, &endp, 0);
if (endp[0] != '\0' || i < 1) {
fprintf(stderr, "invalid number '%s'\n", optarg);
goto exit;
}
if (udev_ctrl_send_set_max_childs(uctrl, i) < 0)
rc = 2;
else
rc = 0;
break;
case 'h':
print_help();
rc = 0;
break;
}
}
if (rc == 1)
err(udev, "unrecognized command\n");
exit:
udev_ctrl_unref(uctrl);
return rc;
}
/**
* udev_new:
*
* Create udev library context. This reads the udev configuration
* file, and fills in the default values.
*
* The initial refcount is 1, and needs to be decremented to
* release the resources of the udev library context.
*
* Returns: a new udev library context
**/
_public_ struct udev *udev_new(void)
{
struct udev *udev;
const char *env;
FILE *f;
udev = calloc(1, sizeof(struct udev));
if (udev == NULL)
return NULL;
udev->refcount = 1;
udev->log_fn = log_stderr;
udev->log_priority = LOG_INFO;
udev_list_init(udev, &udev->properties_list, true);
f = fopen("/etc/udev/udev.conf", "re");
if (f != NULL) {
char line[UTIL_LINE_SIZE];
int line_nr = 0;
while (fgets(line, sizeof(line), f)) {
size_t len;
char *key;
char *val;
line_nr++;
/* find key */
key = line;
while (isspace(key[0]))
key++;
/* comment or empty line */
if (key[0] == '#' || key[0] == '\0')
continue;
/* split key/value */
val = strchr(key, '=');
if (val == NULL) {
udev_err(udev, "missing <key>=<value> in /etc/udev/udev.conf[%i]; skip line\n", line_nr);
continue;
}
val[0] = '\0';
val++;
/* find value */
while (isspace(val[0]))
val++;
/* terminate key */
len = strlen(key);
if (len == 0)
continue;
while (isspace(key[len-1]))
len--;
key[len] = '\0';
/* terminate value */
len = strlen(val);
if (len == 0)
continue;
while (isspace(val[len-1]))
len--;
val[len] = '\0';
if (len == 0)
continue;
/* unquote */
if (val[0] == '"' || val[0] == '\'') {
if (val[len-1] != val[0]) {
udev_err(udev, "inconsistent quoting in /etc/udev/udev.conf[%i]; skip line\n", line_nr);
continue;
}
val[len-1] = '\0';
val++;
}
if (streq(key, "udev_log")) {
udev_set_log_priority(udev, util_log_priority(val));
continue;
}
}
fclose(f);
}
/* environment overrides config */
env = secure_getenv("UDEV_LOG");
if (env != NULL)
udev_set_log_priority(udev, util_log_priority(env));
return udev;
}
