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Diffstat (limited to 'udev/lib/libudev-device.c')
-rw-r--r--udev/lib/libudev-device.c64
1 files changed, 62 insertions, 2 deletions
diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 8812f1fc84..dc198f0a0a 100644
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -47,6 +47,8 @@ struct udev_device {
char *action;
char *devpath_old;
char *physdevpath;
+ char *monitor_buf;
+ size_t monitor_buf_len;
struct udev_list_node devlinks_list;
struct udev_list_node properties_list;
struct udev_list_node sysattr_list;
@@ -617,6 +619,7 @@ void udev_device_unref(struct udev_device *udev_device)
free(udev_device->envp[i]);
free(udev_device->envp);
}
+ free(udev_device->monitor_buf);
info(udev_device->udev, "udev_device: %p released\n", udev_device);
free(udev_device);
}
@@ -983,6 +986,7 @@ int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink
struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
{
+ udev_device->monitor_buf_len = 0;
udev_device->envp_uptodate = 0;
if (value == NULL) {
struct udev_list_entry *list_entry;
@@ -1018,11 +1022,12 @@ char **udev_device_get_properties_envp(struct udev_device *udev_device)
unsigned int i;
struct udev_list_entry *list_entry;
- if (udev_device->envp) {
+ if (udev_device->envp != NULL) {
for (i = 0; i < ENVP_SIZE && udev_device->envp[i] != NULL; i++)
free(udev_device->envp[i]);
- } else
+ } else {
udev_device->envp = malloc(sizeof(char *) * ENVP_SIZE);
+ }
i = 0;
udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
@@ -1039,6 +1044,61 @@ char **udev_device_get_properties_envp(struct udev_device *udev_device)
return udev_device->envp;
}
+#define MONITOR_BUF_SIZE 4096
+ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf)
+{
+ if (udev_device->monitor_buf_len == 0) {
+ const char *action;
+ struct udev_list_entry *list_entry;
+ size_t bufpos;
+ size_t len;
+
+ free(udev_device->monitor_buf);
+ udev_device->monitor_buf = malloc(MONITOR_BUF_SIZE);
+ if (udev_device->monitor_buf == NULL)
+ return -ENOMEM;
+
+ /* header <action>@<devpath> */
+ action = udev_device_get_action(udev_device);
+ if (action == NULL)
+ return -EINVAL;
+ bufpos = util_strlcpy(udev_device->monitor_buf, action, MONITOR_BUF_SIZE);
+ len = util_strlcpy(&udev_device->monitor_buf[bufpos], "@", MONITOR_BUF_SIZE-bufpos);
+ if (len >= MONITOR_BUF_SIZE-bufpos)
+ return -EINVAL;
+ bufpos += len;
+ len = util_strlcpy(&udev_device->monitor_buf[bufpos],
+ udev_device_get_devpath(udev_device),
+ MONITOR_BUF_SIZE-bufpos);
+ if (len+1 >= MONITOR_BUF_SIZE-bufpos)
+ return -EINVAL;
+ bufpos += len+1;
+
+ /* property strings */
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
+ len = util_strlcpy(&udev_device->monitor_buf[bufpos],
+ udev_list_entry_get_name(list_entry), MONITOR_BUF_SIZE-bufpos);
+ if (len >= MONITOR_BUF_SIZE-bufpos)
+ return -EINVAL;
+ bufpos += len;
+ len = util_strlcpy(&udev_device->monitor_buf[bufpos], "=", MONITOR_BUF_SIZE-bufpos);
+ if (len >= MONITOR_BUF_SIZE-bufpos)
+ return -EINVAL;
+ bufpos += len;
+ len = util_strlcpy(&udev_device->monitor_buf[bufpos], udev_list_entry_get_value(list_entry),
+ MONITOR_BUF_SIZE-bufpos);
+ if (len+1 >= MONITOR_BUF_SIZE-bufpos)
+ return -EINVAL;
+ bufpos += len+1;
+ }
+printf("created buf %p, size %zu '%s'\n", udev_device->monitor_buf, bufpos, udev_device->monitor_buf);
+ udev_device->monitor_buf_len = bufpos;
+ }
+ *buf = udev_device->monitor_buf;
+printf("return buf %p, size %zu '%s'\n", *buf, udev_device->monitor_buf_len, *buf);
+ return udev_device->monitor_buf_len;
+}
+
int udev_device_set_action(struct udev_device *udev_device, const char *action)
{
free(udev_device->action);