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-rw-r--r--udev/lib/exported_symbols1
-rw-r--r--udev/lib/libudev-device.c75
-rw-r--r--udev/lib/libudev-monitor.c12
-rw-r--r--udev/lib/libudev-private.h20
-rw-r--r--udev/lib/libudev.h3
-rw-r--r--udev/lib/test-libudev.c2
6 files changed, 91 insertions, 22 deletions
diff --git a/udev/lib/exported_symbols b/udev/lib/exported_symbols
index 0826e6f6f1..4db23b2251 100644
--- a/udev/lib/exported_symbols
+++ b/udev/lib/exported_symbols
@@ -10,6 +10,7 @@ udev_device_ref
udev_device_unref
udev_device_get_udev
udev_device_get_devpath
+udev_device_get_syspath
udev_device_get_devname
udev_device_get_subsystem
udev_device_get_devlinks
diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 6465157fbd..c4d65e9c49 100644
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -32,6 +32,17 @@
#include "libudev-private.h"
#include "../udev.h"
+struct udev_device {
+ int refcount;
+ struct udev *udev;
+ char *devpath;
+ char *syspath;
+ char *devname;
+ char *subsystem;
+ struct list_head link_list;
+ struct list_head env_list;
+};
+
struct udev_device *device_init(struct udev *udev)
{
struct udev_device *udev_device;
@@ -99,7 +110,7 @@ struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *
/* resolve possible symlink to real path */
strlcpy(path, devpath, sizeof(path));
sysfs_resolve_link(path, sizeof(path));
- udev_device->devpath = strdup(path);
+ device_set_devpath(udev_device, devpath);
log_info(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device));
err = udev_db_get_device(udevice, path);
@@ -171,7 +182,7 @@ void udev_device_unref(struct udev_device *udev_device)
udev_device->refcount--;
if (udev_device->refcount > 0)
return;
- free(udev_device->devpath);
+ free(udev_device->syspath);
free(udev_device->devname);
free(udev_device->subsystem);
name_list_cleanup(&udev_device->link_list);
@@ -184,10 +195,10 @@ void udev_device_unref(struct udev_device *udev_device)
* udev_device_get_devpath:
* @udev_device: udev device
*
- * Retrieve the sys path of the udev device. The path does not contain
- * the sys mount point.
+ * Retrieve the kernel devpath value of the udev device. The path
+ * does not contain the sys mount point, and starts with a '/'.
*
- * Returns: the sys path of the udev device
+ * Returns: the devpath of the udev device
**/
const char *udev_device_get_devpath(struct udev_device *udev_device)
{
@@ -197,6 +208,22 @@ const char *udev_device_get_devpath(struct udev_device *udev_device)
}
/**
+ * udev_device_get_syspath:
+ * @udev_device: udev device
+ *
+ * Retrieve the sys path of the udev device. The path is an
+ * absolute path and starts with the sys mount point.
+ *
+ * Returns: the sys path of the udev device
+ **/
+const char *udev_device_get_syspath(struct udev_device *udev_device)
+{
+ if (udev_device == NULL)
+ return NULL;
+ return udev_device->syspath;
+}
+
+/**
* udev_device_get_devname:
* @udev_device: udev device
*
@@ -305,3 +332,41 @@ int udev_device_get_properties(struct udev_device *udev_device,
}
return count;
}
+
+int device_set_devpath(struct udev_device *udev_device, const char *devpath)
+{
+ if (asprintf(&udev_device->syspath, "%s%s", udev_get_sys_path(udev_device->udev), devpath) < 0)
+ return -ENOMEM;
+ udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
+ return 0;
+}
+
+int device_set_subsystem(struct udev_device *udev_device, const char *subsystem)
+{
+ udev_device->subsystem = strdup(subsystem);
+ if (udev_device->subsystem == NULL)
+ return -1;
+ return 0;
+}
+
+int device_set_devname(struct udev_device *udev_device, const char *devname)
+{
+ udev_device->devname = strdup(devname);
+ if (udev_device->devname == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+int device_add_devlink(struct udev_device *udev_device, const char *devlink)
+{
+ if (name_list_add(&udev_device->link_list, devlink, 0) == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+int device_add_property(struct udev_device *udev_device, const char *property)
+{
+ if (name_list_add(&udev_device->env_list, property, 0) == NULL)
+ return -ENOMEM;
+ return 0;
+}
diff --git a/udev/lib/libudev-monitor.c b/udev/lib/libudev-monitor.c
index c8f07eae8f..92617e8888 100644
--- a/udev/lib/libudev-monitor.c
+++ b/udev/lib/libudev-monitor.c
@@ -257,25 +257,25 @@ struct udev_device *udev_monitor_get_device(struct udev_monitor *udev_monitor)
bufpos += keylen + 1;
if (strncmp(key, "DEVPATH=", 8) == 0) {
- udev_device->devpath = strdup(&key[8]);
+ device_set_devpath(udev_device, &key[8]);
} else if (strncmp(key, "SUBSYSTEM=", 10) == 0) {
- udev_device->subsystem = strdup(&key[10]);
+ device_set_subsystem(udev_device, &key[10]);
} else if (strncmp(key, "DEVNAME=", 8) == 0) {
- udev_device->devname = strdup(&key[8]);
+ device_set_devname(udev_device, &key[8]);
} else if (strncmp(key, "DEVLINKS=", 9) == 0) {
char *slink = &key[9];
char *next = strchr(slink, ' ');
while (next != NULL) {
next[0] = '\0';
- name_list_add(&udev_device->link_list, slink, 0);
+ device_add_devlink(udev_device, slink);
slink = &next[1];
next = strchr(slink, ' ');
}
if (slink[0] != '\0')
- name_list_add(&udev_device->link_list, slink, 0);
+ device_add_devlink(udev_device, slink);
}
- name_list_add(&udev_device->env_list, key, 0);
+ device_add_property(udev_device, key);
}
return udev_device;
diff --git a/udev/lib/libudev-private.h b/udev/lib/libudev-private.h
index 6331f99d5b..ffdf571513 100644
--- a/udev/lib/libudev-private.h
+++ b/udev/lib/libudev-private.h
@@ -43,16 +43,16 @@ void udev_log(struct udev *udev,
#define log_err(format, arg...) do { } while (0)
#endif
-struct udev_device {
- int refcount;
- struct udev *udev;
- char *devpath;
- char *devname;
- char *subsystem;
- struct list_head link_list;
- struct list_head env_list;
-};
-
+/* libudev */
extern struct udev_device *device_init(struct udev *udev);
+
+/* libudev-device */
+extern int device_set_devpath(struct udev_device *udev_device, const char *devpath);
+extern int device_set_subsystem(struct udev_device *udev_device, const char *subsystem);
+extern int device_set_devname(struct udev_device *udev_device, const char *devname);
+extern int device_add_devlink(struct udev_device *udev_device, const char *devlink);
+extern int device_add_property(struct udev_device *udev_device, const char *property);
+
+/* libudev-utils */
extern ssize_t util_get_sys_subsystem(struct udev *udev, const char *devpath, char *subsystem, size_t size);
#endif
diff --git a/udev/lib/libudev.h b/udev/lib/libudev.h
index 3a1c1bf3ac..30753a19a7 100644
--- a/udev/lib/libudev.h
+++ b/udev/lib/libudev.h
@@ -44,8 +44,9 @@ extern struct udev_device *udev_device_ref(struct udev_device *udev_device);
extern void udev_device_unref(struct udev_device *udev_device);
extern struct udev *udev_device_get_udev(struct udev_device *udev_device);
extern const char *udev_device_get_devpath(struct udev_device *udev_device);
-extern const char *udev_device_get_devname(struct udev_device *udev_device);
extern const char *udev_device_get_subsystem(struct udev_device *udev_device);
+extern const char *udev_device_get_syspath(struct udev_device *udev_device);
+extern const char *udev_device_get_devname(struct udev_device *udev_device);
extern int udev_device_get_devlinks(struct udev_device *udev_device,
int (*cb)(struct udev_device *udev_device,
const char *value, void *data),
diff --git a/udev/lib/test-libudev.c b/udev/lib/test-libudev.c
index 3c38600192..d0095f15fc 100644
--- a/udev/lib/test-libudev.c
+++ b/udev/lib/test-libudev.c
@@ -58,6 +58,8 @@ static void print_device(struct udev_device *device)
printf("devpath: '%s'\n", str);
str = udev_device_get_subsystem(device);
printf("subsystem: '%s'\n", str);
+ str = udev_device_get_syspath(device);
+ printf("syspath: '%s'\n", str);
str = udev_device_get_devname(device);
printf("devname: '%s'\n", str);
count = udev_device_get_devlinks(device, print_devlinks_cb, NULL);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-10-25 11:35:01 +0000