INSTALL_DIR = /usr/local/bin
RELEASE_NAME = $(ROOT)-$(VERSION)
LOCAL_CFG_DIR = etc/udev
-HOTPLUG_EXEC = $(ROOT)
DESTDIR =
KERNEL_DIR = /lib/modules/${shell uname -r}/build
KERNEL=="sda", SYSFS{nothing}=="", NAME="not-2-ok"
KERNEL=="sda", SYSFS{vendor}!="", NAME="ok"
KERNEL=="sda", SYSFS{vendor}=="", NAME="not-3-ok"
+EOF
+ },
+ {
+ desc => "check ACTION value",
+ subsys => "block",
+ devpath => "/block/sda",
+ exp_name => "ok",
+ rules => <<EOF
+ACTION=="unknown", KERNEL=="sda", NAME="unknown-not-ok"
+ACTION=="add", KERNEL=="sda", NAME="ok"
+EOF
+ },
+ {
+ desc => "apply NAME only once",
+ subsys => "block",
+ devpath => "/block/sda",
+ exp_name => "link",
+ exp_target => "ok",
+ rules => <<EOF
+KERNEL=="sda", NAME="ok"
+KERNEL=="sda", NAME="not-ok"
+KERNEL=="sda", SYMLINK+="link"
+EOF
+ },
+ {
+ desc => "test RUN key",
+ subsys => "block",
+ devpath => "/block/sda",
+ exp_name => "testsymlink",
+ exp_target => "ok",
+ exp_rem_error => "yes",
+ option => "clean",
+ rules => <<EOF
+KERNEL=="sda", NAME="ok", RUN+="/bin/ln -s ok %r/testsymlink"
+KERNEL=="sda", NAME="not-ok"
+EOF
+ },
+ {
+ desc => "test RUN key remove",
+ subsys => "block",
+ devpath => "/block/sda",
+ exp_name => "testsymlink2",
+ exp_target => "ok2",
+ rules => <<EOF
+KERNEL=="sda", NAME="ok2", RUN+="/bin/ln -s ok2 %r/testsymlink2"
+KERNEL=="sda", ACTION=="remove", RUN+="/bin/rm -f %r/testsymlink2"
+KERNEL=="sda", NAME="not-ok2"
EOF
},
);
.B SUBSYSTEM
Match the kernel subsystem name.
.TP
+.B ACTION
+Match the kernel action name.
+.TP
.B DRIVER
Match the kernel driver name.
.TP
The permissions for the device node. Every specified value overwrites the
compiled-in default value.
.TP
+.B RUN
+Add a program to the list of programs to be executed for a specific device.
+.TP
.B OPTIONS
.B last_rule
will be the last rule applied. No later rules will have any effect.
.BI %s{ filename }
The content of a sysfs attribute.
.TP
+.B %r
+The udev_root value.
+.TP
.B %e
If a device node already exists with the name, the smallest positive
decimal integer N is substituted such that the resulting name doesn't
.B UDEV_LOG
Overrides the log priority specified in the config file.
.TP
+.B UDEV_RUN
+If set to "0", it disables the execution of programs added by rules.
+.TP
.B UDEV_NO_DEVD
The default behavior of
.B udev
.nf
/sbin/udev udev program
/etc/udev/* udev config files
-/etc/hotplug.d/default/udev.hotplug hotplug symlink to udev program
/etc/dev.d/* programs invoked by udev
.fi
.SH "SEE ALSO"
}
if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS || udev.type == DEV_NET) {
+ udev_rules_init();
+
if (strcmp(action, "add") == 0) {
/* wait for sysfs and possibly add node */
dbg("udev add");
wait_for_class_device(class_dev, &error);
- /* init rules */
- udev_rules_init();
-
/* name, create node, store in db */
retval = udev_add_device(&udev, class_dev);
goto hotplug;
}
+ udev_rules_get_run(&udev);
+ if (udev.ignore_device) {
+ dbg("device event will be ignored");
+ goto hotplug;
+ }
+
/* get node from db, remove db-entry, delete created node */
retval = udev_remove_device(&udev);
}
+ if (udev_run && !list_empty(&udev.run_list)) {
+ struct name_entry *name_loop;
+
+ dbg("executing run list");
+ list_for_each_entry(name_loop, &udev.run_list, node)
+ execute_command(name_loop->name, udev.subsystem);
+ }
+
/* run dev.d/ scripts if we created/deleted a node or changed a netif name */
if (udev.devname[0] != '\0') {
setenv("DEVNAME", udev.devname, 1);
struct udevice {
char devpath[PATH_SIZE];
char subsystem[NAME_SIZE];
+ char action[NAME_SIZE];
enum device_type type;
char name[PATH_SIZE];
char group[USER_SIZE];
mode_t mode;
dev_t devt;
+ struct list_head run_list;
char tmp_node[PATH_SIZE];
int partitions;
+ int ignore_device;
int ignore_remove;
int config_line;
char config_file[PATH_SIZE];
extern char udev_config_filename[PATH_SIZE];
extern char udev_rules_filename[PATH_SIZE];
extern int udev_log_priority;
+extern int udev_run;
extern int udev_dev_d;
extern int udev_hotplug_d;
}
}
- if (udev_rules_get_name(udev, class_dev) != 0)
+ udev_rules_get_name(udev, class_dev);
+ if (udev->ignore_device) {
+ dbg("device event will be ignored");
return 0;
+ }
dbg("adding name='%s'", udev->name);
char udev_config_filename[PATH_SIZE];
char udev_rules_filename[PATH_SIZE];
int udev_log_priority;
+int udev_run;
int udev_dev_d;
int udev_hotplug_d;
strcpy(udev_config_filename, UDEV_CONFIG_FILE);
strcpy(udev_rules_filename, UDEV_RULES_FILE);
udev_log_priority = LOG_ERR;
+ udev_run = 1;
udev_dev_d = 1;
udev_hotplug_d = 1;
sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path));
+ /* disable RUN key execution */
+ env = getenv("UDEV_RUN");
+ if (env && !string_is_true(env))
+ udev_run = 0;
+
env = getenv("UDEV_NO_DEVD");
if (env && string_is_true(env))
udev_dev_d = 0;
{
struct sysfs_device *parent_device = sysfs_device;
+ if (rule->action_operation != KEY_OP_UNSET) {
+ dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
+ rule->action, udev->action);
+ if (strcmp_pattern(rule->action, udev->action) != 0) {
+ dbg(KEY_ACTION " is not matching");
+ if (rule->action_operation != KEY_OP_NOMATCH)
+ goto exit;
+ } else {
+ dbg(KEY_ACTION " matches");
+ if (rule->action_operation == KEY_OP_NOMATCH)
+ goto exit;
+ }
+ dbg(KEY_ACTION " key is true");
+ }
+
if (rule->kernel_operation != KEY_OP_UNSET) {
dbg("check for " KEY_KERNEL " rule->kernel='%s' udev_kernel_name='%s'",
rule->kernel, udev->kernel_name);
list_for_each_entry(rule, &udev_rule_list, node) {
dbg("process rule");
if (match_rule(udev, rule, class_dev, sysfs_device) == 0) {
+ if (udev->name[0] != '\0' && rule->name[0] != '\0') {
+ dbg("node name already set, rule ignored");
+ continue;
+ }
/* apply options */
if (rule->ignore_device) {
info("configured rule in '%s[%i]' applied, '%s' is ignored",
rule->config_file, rule->config_line, udev->kernel_name);
- return -1;
+ udev->ignore_device = 1;
+ return 0;
}
if (rule->ignore_remove) {
udev->ignore_remove = 1;
name_list_add(&udev->symlink_list, pos, 0);
}
- /* rule matches */
+ /* set name, later rules with name set will be ignored */
if (rule->name[0] != '\0') {
info("configured rule in '%s[%i]' applied, '%s' becomes '%s'",
rule->config_file, rule->config_line, udev->kernel_name, rule->name);
if (udev->type != DEV_NET)
dbg("name, '%s' is going to have owner='%s', group='%s', mode=%#o partitions=%i",
udev->name, udev->owner, udev->group, udev->mode, udev->partitions);
+ }
- break;
+ if (rule->run[0] != '\0') {
+ char program[PATH_SIZE];
+
+ strlcpy(program, rule->run, sizeof(program));
+ apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
}
if (rule->last_rule) {
dbg("last rule to be applied");
break;
}
-
}
}
if (udev->name[0] == '\0') {
- /* no rule matched, so we use the kernel name */
strlcpy(udev->name, udev->kernel_name, sizeof(udev->name));
info("no rule found, use kernel name '%s'", udev->name);
}
return 0;
}
+
+int udev_rules_get_run(struct udevice *udev)
+{
+ struct udev_rule *rule;
+ char program[PATH_SIZE];
+
+ /* look for a matching rule to apply */
+ list_for_each_entry(rule, &udev_rule_list, node) {
+ dbg("process rule");
+
+ if (rule->run[0] == '\0')
+ continue;
+
+ if (rule->name[0] != '\0' || rule->symlink[0] != '\0' ||
+ rule->mode != 0000 || rule->owner[0] != '\0' || rule->group[0] != '\0') {
+ dbg("skip rule that names a device");
+ continue;
+ }
+
+ if (rule->action_operation != KEY_OP_UNSET) {
+ dbg("check for " KEY_ACTION " rule->action='%s' udev->action='%s'",
+ rule->action, udev->action);
+ if (strcmp_pattern(rule->action, udev->action) != 0) {
+ dbg(KEY_ACTION " is not matching");
+ if (rule->action_operation != KEY_OP_NOMATCH)
+ continue;
+ } else {
+ dbg(KEY_ACTION " matches");
+ if (rule->action_operation == KEY_OP_NOMATCH)
+ continue;
+ }
+ dbg(KEY_ACTION " key is true");
+ }
+
+ if (rule->kernel_operation != KEY_OP_UNSET) {
+ dbg("check for " KEY_KERNEL " rule->kernel='%s' udev->kernel_name='%s'",
+ rule->kernel, udev->kernel_name);
+ if (strcmp_pattern(rule->kernel, udev->kernel_name) != 0) {
+ dbg(KEY_KERNEL " is not matching");
+ if (rule->kernel_operation != KEY_OP_NOMATCH)
+ continue;
+ } else {
+ dbg(KEY_KERNEL " matches");
+ if (rule->kernel_operation == KEY_OP_NOMATCH)
+ continue;
+ }
+ dbg(KEY_KERNEL " key is true");
+ }
+
+ if (rule->subsystem_operation != KEY_OP_UNSET) {
+ dbg("check for " KEY_SUBSYSTEM " rule->subsystem='%s' udev->subsystem='%s'",
+ rule->subsystem, udev->subsystem);
+ if (strcmp_pattern(rule->subsystem, udev->subsystem) != 0) {
+ dbg(KEY_SUBSYSTEM " is not matching");
+ if (rule->subsystem_operation != KEY_OP_NOMATCH)
+ continue;
+ } else {
+ dbg(KEY_SUBSYSTEM " matches");
+ if (rule->subsystem_operation == KEY_OP_NOMATCH)
+ continue;
+ }
+ dbg(KEY_SUBSYSTEM " key is true");
+ }
+
+ if (rule->env_pair_count) {
+ int i;
+
+ dbg("check for " KEY_ENV " pairs");
+ for (i = 0; i < rule->env_pair_count; i++) {
+ struct key_pair *pair;
+ const char *value;
+
+ pair = &rule->env_pair[i];
+ value = getenv(pair->name);
+ if (!value) {
+ dbg(KEY_ENV "{'%s'} is not found", pair->name);
+ continue;
+ }
+ if (strcmp_pattern(pair->value, value) != 0) {
+ dbg(KEY_ENV "{'%s'} is not matching", pair->name);
+ if (pair->operation != KEY_OP_NOMATCH)
+ continue;
+ } else {
+ dbg(KEY_ENV "{'%s'} matches", pair->name);
+ if (pair->operation == KEY_OP_NOMATCH)
+ continue;
+ }
+ }
+ dbg(KEY_ENV " key is true");
+ }
+
+ /* rule matches */
+
+ if (rule->ignore_device) {
+ info("configured rule in '%s[%i]' applied, '%s' is ignored",
+ rule->config_file, rule->config_line, udev->kernel_name);
+ udev->ignore_device = 1;
+ return 0;
+ }
+
+ strlcpy(program, rule->run, sizeof(program));
+ apply_format(udev, program, sizeof(program), NULL, NULL);
+ dbg("add run '%s'", program);
+ name_list_add(&udev->run_list, program, 0);
+
+ if (rule->last_rule) {
+ dbg("last rule to be applied");
+ break;
+ }
+ }
+
+ return 0;
+}
#define KEY_KERNEL "KERNEL"
#define KEY_SUBSYSTEM "SUBSYSTEM"
+#define KEY_ACTION "ACTION"
#define KEY_BUS "BUS"
#define KEY_ID "ID"
#define KEY_PROGRAM "PROGRAM"
#define KEY_OWNER "OWNER"
#define KEY_GROUP "GROUP"
#define KEY_MODE "MODE"
+#define KEY_RUN "RUN"
#define KEY_OPTIONS "OPTIONS"
#define OPTION_LAST_RULE "last_rule"
enum key_operation kernel_operation;
char subsystem[NAME_SIZE];
enum key_operation subsystem_operation;
+ char action[NAME_SIZE];
+ enum key_operation action_operation;
char bus[NAME_SIZE];
enum key_operation bus_operation;
char id[NAME_SIZE];
char owner[USER_SIZE];
char group[USER_SIZE];
mode_t mode;
+ char run[PATH_SIZE];
int last_rule;
int ignore_device;
extern int udev_rules_init(void);
extern int udev_rules_get_name(struct udevice *udev, struct sysfs_class_device *class_dev);
+extern int udev_rules_get_run(struct udevice *udev);
extern void udev_rules_close(void);
#endif
continue;
}
+ if (strcasecmp(key, KEY_ACTION) == 0) {
+ strlcpy(rule.action, value, sizeof(rule.action));
+ rule.action_operation = operation;
+ valid = 1;
+ continue;
+ }
+
if (strcasecmp(key, KEY_BUS) == 0) {
strlcpy(rule.bus, value, sizeof(rule.bus));
rule.bus_operation = operation;
continue;
}
+ if (strcasecmp(key, KEY_RUN) == 0) {
+ strlcpy(rule.run, value, sizeof(rule.run));
+ valid = 1;
+ continue;
+ }
+
if (strcasecmp(key, KEY_OPTIONS) == 0) {
if (strstr(value, OPTION_LAST_RULE) != NULL) {
dbg("last rule to be applied");
memset(udev, 0x00, sizeof(struct udevice));
INIT_LIST_HEAD(&udev->symlink_list);
+ INIT_LIST_HEAD(&udev->run_list);
if (subsystem)
strlcpy(udev->subsystem, subsystem, sizeof(udev->subsystem));
+ if (action)
+ strlcpy(udev->action, action, sizeof(udev->action));
+
if (devpath) {
strlcpy(udev->devpath, devpath, sizeof(udev->devpath));
remove_trailing_char(udev->devpath, '/');
}
/* forks event and removes event from run queue when finished */
-static void udev_run(struct hotplug_msg *msg)
+static void execute_udev(struct hotplug_msg *msg)
{
char *const argv[] = { "udev", msg->subsystem, NULL };
pid_t pid;
if (!msg) {
/* move event to run list */
list_move_tail(&loop_msg->node, &running_list);
- udev_run(loop_msg);
+ execute_udev(loop_msg);
running++;
dbg("moved seq %llu to running list", loop_msg->seqnum);
} else {
udev_init_device(&udev, devpath, subsystem, "add");
udev_add_device(&udev, class_dev);
+ if (udev_run && !list_empty(&udev.run_list)) {
+ struct name_entry *name_loop;
+
+ dbg("executing run list");
+ list_for_each_entry(name_loop, &udev.run_list, node)
+ execute_command(name_loop->name, udev.subsystem);
+ }
+
/* run dev.d/ scripts if we created a node or changed a netif name */
if (udev_dev_d && udev.devname[0] != '\0') {
setenv("DEVNAME", udev.devname, 1);
~ianmdlvl / elogind.git / commitdiff