free(event);
}
+enum subst_type {
+ SUBST_UNKNOWN,
+ SUBST_DEVNODE,
+ SUBST_ATTR,
+ SUBST_ENV,
+ SUBST_KERNEL,
+ SUBST_KERNEL_NUMBER,
+ SUBST_DRIVER,
+ SUBST_DEVPATH,
+ SUBST_ID,
+ SUBST_MAJOR,
+ SUBST_MINOR,
+ SUBST_RESULT,
+ SUBST_PARENT,
+ SUBST_NAME,
+ SUBST_LINKS,
+ SUBST_ROOT,
+ SUBST_SYS,
+};
+
+static size_t subst_format_var(struct udev_event *event, struct udev_device *dev,
+ enum subst_type type, char *attr,
+ char **dest, size_t l) {
+ char *s = *dest;
+
+ switch (type) {
+ case SUBST_DEVPATH:
+ l = strpcpy(&s, l, udev_device_get_devpath(dev));
+ break;
+ case SUBST_KERNEL:
+ l = strpcpy(&s, l, udev_device_get_sysname(dev));
+ break;
+ case SUBST_KERNEL_NUMBER:
+ if (udev_device_get_sysnum(dev) == NULL)
+ break;
+ l = strpcpy(&s, l, udev_device_get_sysnum(dev));
+ break;
+ case SUBST_ID:
+ if (event->dev_parent == NULL)
+ break;
+ l = strpcpy(&s, l, udev_device_get_sysname(event->dev_parent));
+ break;
+ case SUBST_DRIVER: {
+ const char *driver;
+
+ if (event->dev_parent == NULL)
+ break;
+
+ driver = udev_device_get_driver(event->dev_parent);
+ if (driver == NULL)
+ break;
+ l = strpcpy(&s, l, driver);
+ break;
+ }
+ case SUBST_MAJOR: {
+ char num[UTIL_PATH_SIZE];
+
+ sprintf(num, "%u", major(udev_device_get_devnum(dev)));
+ l = strpcpy(&s, l, num);
+ break;
+ }
+ case SUBST_MINOR: {
+ char num[UTIL_PATH_SIZE];
+
+ sprintf(num, "%u", minor(udev_device_get_devnum(dev)));
+ l = strpcpy(&s, l, num);
+ break;
+ }
+ case SUBST_RESULT: {
+ char *rest;
+ int i;
+
+ if (event->program_result == NULL)
+ break;
+ /* get part of the result string */
+ i = 0;
+ if (attr != NULL)
+ i = strtoul(attr, &rest, 10);
+ if (i > 0) {
+ char result[UTIL_PATH_SIZE];
+ char tmp[UTIL_PATH_SIZE];
+ char *cpos;
+
+ strscpy(result, sizeof(result), event->program_result);
+ cpos = result;
+ while (--i) {
+ while (cpos[0] != '\0' && !isspace(cpos[0]))
+ cpos++;
+ while (isspace(cpos[0]))
+ cpos++;
+ if (cpos[0] == '\0')
+ break;
+ }
+ if (i > 0) {
+ log_error("requested part of result string not found");
+ break;
+ }
+ strscpy(tmp, sizeof(tmp), cpos);
+ /* %{2+}c copies the whole string from the second part on */
+ if (rest[0] != '+') {
+ cpos = strchr(tmp, ' ');
+ if (cpos)
+ cpos[0] = '\0';
+ }
+ l = strpcpy(&s, l, tmp);
+ } else {
+ l = strpcpy(&s, l, event->program_result);
+ }
+ break;
+ }
+ case SUBST_ATTR: {
+ const char *value = NULL;
+ char vbuf[UTIL_NAME_SIZE];
+ size_t len;
+ int count;
+
+ if (attr == NULL) {
+ log_error("missing file parameter for attr");
+ break;
+ }
+
+ /* try to read the value specified by "[dmi/id]product_name" */
+ if (util_resolve_subsys_kernel(event->udev, attr, vbuf, sizeof(vbuf), 1) == 0)
+ value = vbuf;
+
+ /* try to read the attribute the device */
+ if (value == NULL)
+ value = udev_device_get_sysattr_value(event->dev, attr);
+
+ /* try to read the attribute of the parent device, other matches have selected */
+ if (value == NULL && event->dev_parent != NULL && event->dev_parent != event->dev)
+ value = udev_device_get_sysattr_value(event->dev_parent, attr);
+
+ if (value == NULL)
+ break;
+
+ /* strip trailing whitespace, and replace unwanted characters */
+ if (value != vbuf)
+ strscpy(vbuf, sizeof(vbuf), value);
+ len = strlen(vbuf);
+ while (len > 0 && isspace(vbuf[--len]))
+ vbuf[len] = '\0';
+ count = util_replace_chars(vbuf, UDEV_ALLOWED_CHARS_INPUT);
+ if (count > 0)
+ log_debug("%i character(s) replaced" , count);
+ l = strpcpy(&s, l, vbuf);
+ break;
+ }
+ case SUBST_PARENT: {
+ struct udev_device *dev_parent;
+ const char *devnode;
+
+ dev_parent = udev_device_get_parent(event->dev);
+ if (dev_parent == NULL)
+ break;
+ devnode = udev_device_get_devnode(dev_parent);
+ if (devnode != NULL)
+ l = strpcpy(&s, l, devnode + strlen("/dev/"));
+ break;
+ }
+ case SUBST_DEVNODE:
+ if (udev_device_get_devnode(dev) != NULL)
+ l = strpcpy(&s, l, udev_device_get_devnode(dev));
+ break;
+ case SUBST_NAME:
+ if (event->name != NULL)
+ l = strpcpy(&s, l, event->name);
+ else if (udev_device_get_devnode(dev) != NULL)
+ l = strpcpy(&s, l, udev_device_get_devnode(dev) + strlen("/dev/"));
+ else
+ l = strpcpy(&s, l, udev_device_get_sysname(dev));
+ break;
+ case SUBST_LINKS: {
+ struct udev_list_entry *list_entry;
+
+ list_entry = udev_device_get_devlinks_list_entry(dev);
+ if (list_entry == NULL)
+ break;
+ l = strpcpy(&s, l, udev_list_entry_get_name(list_entry) + strlen("/dev/"));
+ udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry))
+ l = strpcpyl(&s, l, " ", udev_list_entry_get_name(list_entry) + strlen("/dev/"), NULL);
+ break;
+ }
+ case SUBST_ROOT:
+ l = strpcpy(&s, l, "/dev");
+ break;
+ case SUBST_SYS:
+ l = strpcpy(&s, l, "/sys");
+ break;
+ case SUBST_ENV:
+ if (attr == NULL) {
+ break;
+ } else {
+ const char *value;
+
+ value = udev_device_get_property_value(event->dev, attr);
+ if (value == NULL)
+ break;
+ l = strpcpy(&s, l, value);
+ break;
+ }
+ default:
+ log_error("unknown substitution type=%i", type);
+ break;
+ }
+
+ *dest = s;
+
+ return l;
+}
+
size_t udev_event_apply_format(struct udev_event *event,
const char *src, char *dest, size_t size,
bool replace_whitespace) {
struct udev_device *dev = event->dev;
- enum subst_type {
- SUBST_UNKNOWN,
- SUBST_DEVNODE,
- SUBST_ATTR,
- SUBST_ENV,
- SUBST_KERNEL,
- SUBST_KERNEL_NUMBER,
- SUBST_DRIVER,
- SUBST_DEVPATH,
- SUBST_ID,
- SUBST_MAJOR,
- SUBST_MINOR,
- SUBST_RESULT,
- SUBST_PARENT,
- SUBST_NAME,
- SUBST_LINKS,
- SUBST_ROOT,
- SUBST_SYS,
- };
static const struct subst_map {
const char *name;
const char fmt;
l = UTIL_PATH_SIZE;
}
- switch (type) {
- case SUBST_DEVPATH:
- l = strpcpy(&s, l, udev_device_get_devpath(dev));
- break;
- case SUBST_KERNEL:
- l = strpcpy(&s, l, udev_device_get_sysname(dev));
- break;
- case SUBST_KERNEL_NUMBER:
- if (udev_device_get_sysnum(dev) == NULL)
- break;
- l = strpcpy(&s, l, udev_device_get_sysnum(dev));
- break;
- case SUBST_ID:
- if (event->dev_parent == NULL)
- break;
- l = strpcpy(&s, l, udev_device_get_sysname(event->dev_parent));
- break;
- case SUBST_DRIVER: {
- const char *driver;
-
- if (event->dev_parent == NULL)
- break;
-
- driver = udev_device_get_driver(event->dev_parent);
- if (driver == NULL)
- break;
- l = strpcpy(&s, l, driver);
- break;
- }
- case SUBST_MAJOR: {
- char num[UTIL_PATH_SIZE];
-
- sprintf(num, "%u", major(udev_device_get_devnum(dev)));
- l = strpcpy(&s, l, num);
- break;
- }
- case SUBST_MINOR: {
- char num[UTIL_PATH_SIZE];
-
- sprintf(num, "%u", minor(udev_device_get_devnum(dev)));
- l = strpcpy(&s, l, num);
- break;
- }
- case SUBST_RESULT: {
- char *rest;
- int i;
-
- if (event->program_result == NULL)
- break;
- /* get part of the result string */
- i = 0;
- if (attr != NULL)
- i = strtoul(attr, &rest, 10);
- if (i > 0) {
- char result[UTIL_PATH_SIZE];
- char tmp[UTIL_PATH_SIZE];
- char *cpos;
-
- strscpy(result, sizeof(result), event->program_result);
- cpos = result;
- while (--i) {
- while (cpos[0] != '\0' && !isspace(cpos[0]))
- cpos++;
- while (isspace(cpos[0]))
- cpos++;
- if (cpos[0] == '\0')
- break;
- }
- if (i > 0) {
- log_error("requested part of result string not found");
- break;
- }
- strscpy(tmp, sizeof(tmp), cpos);
- /* %{2+}c copies the whole string from the second part on */
- if (rest[0] != '+') {
- cpos = strchr(tmp, ' ');
- if (cpos)
- cpos[0] = '\0';
- }
- l = strpcpy(&s, l, tmp);
- } else {
- l = strpcpy(&s, l, event->program_result);
- }
- break;
- }
- case SUBST_ATTR: {
- const char *value = NULL;
- char vbuf[UTIL_NAME_SIZE];
- size_t len;
- int count;
-
- if (attr == NULL) {
- log_error("missing file parameter for attr");
- break;
- }
-
- /* try to read the value specified by "[dmi/id]product_name" */
- if (util_resolve_subsys_kernel(event->udev, attr, vbuf, sizeof(vbuf), 1) == 0)
- value = vbuf;
-
- /* try to read the attribute the device */
- if (value == NULL)
- value = udev_device_get_sysattr_value(event->dev, attr);
-
- /* try to read the attribute of the parent device, other matches have selected */
- if (value == NULL && event->dev_parent != NULL && event->dev_parent != event->dev)
- value = udev_device_get_sysattr_value(event->dev_parent, attr);
-
- if (value == NULL)
- break;
-
- /* strip trailing whitespace, and replace unwanted characters */
- if (value != vbuf)
- strscpy(vbuf, sizeof(vbuf), value);
- len = strlen(vbuf);
- while (len > 0 && isspace(vbuf[--len]))
- vbuf[len] = '\0';
- count = util_replace_chars(vbuf, UDEV_ALLOWED_CHARS_INPUT);
- if (count > 0)
- log_debug("%i character(s) replaced" , count);
- l = strpcpy(&s, l, vbuf);
- break;
- }
- case SUBST_PARENT: {
- struct udev_device *dev_parent;
- const char *devnode;
-
- dev_parent = udev_device_get_parent(event->dev);
- if (dev_parent == NULL)
- break;
- devnode = udev_device_get_devnode(dev_parent);
- if (devnode != NULL)
- l = strpcpy(&s, l, devnode + strlen("/dev/"));
- break;
- }
- case SUBST_DEVNODE:
- if (udev_device_get_devnode(dev) != NULL)
- l = strpcpy(&s, l, udev_device_get_devnode(dev));
- break;
- case SUBST_NAME:
- if (event->name != NULL)
- l = strpcpy(&s, l, event->name);
- else if (udev_device_get_devnode(dev) != NULL)
- l = strpcpy(&s, l, udev_device_get_devnode(dev) + strlen("/dev/"));
- else
- l = strpcpy(&s, l, udev_device_get_sysname(dev));
- break;
- case SUBST_LINKS: {
- struct udev_list_entry *list_entry;
-
- list_entry = udev_device_get_devlinks_list_entry(dev);
- if (list_entry == NULL)
- break;
- l = strpcpy(&s, l, udev_list_entry_get_name(list_entry) + strlen("/dev/"));
- udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry))
- l = strpcpyl(&s, l, " ", udev_list_entry_get_name(list_entry) + strlen("/dev/"), NULL);
- break;
- }
- case SUBST_ROOT:
- l = strpcpy(&s, l, "/dev");
- break;
- case SUBST_SYS:
- l = strpcpy(&s, l, "/sys");
- break;
- case SUBST_ENV:
- if (attr == NULL) {
- break;
- } else {
- const char *value;
-
- value = udev_device_get_property_value(event->dev, attr);
- if (value == NULL)
- break;
- l = strpcpy(&s, l, value);
- break;
- }
- default:
- log_error("unknown substitution type=%i", type);
- break;
- }
+ l = subst_format_var(event, dev, type, attr, &s, l);
/* replace whitespace in sbuf and copy to dest */
if (replws) {
projects / thirdparty / systemd.git / commitdiff
