PawletOS/external_libudev-zero
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udev_device.c: ignore devices without subsystem

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Do not allocate udev_device if device doesn't have subsystem.

Fixes: #43
This commit is contained in:
illiliti
2021-10-08 08:36:20 +03:00
parent 6250984089
commit caaa021290
1 changed files with 3 additions and 4 deletions
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7
udev_device.c
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@@ -530,18 +530,18 @@ static void set_properties_from_props(struct udev_device *udev_device)
struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath)
{
char path[PATH_MAX], file[PATH_MAX];
char *subsystem, *driver, *sysname;
struct udev_device *udev_device;
char path[PATH_MAX];
int i;
if (!udev || !syspath) {
return NULL;
}
snprintf(file, sizeof(file), "%s/uevent", syspath);
subsystem = read_symlink(syspath, "subsystem");
if (access(file, R_OK) == -1) {
if (!subsystem) {
return NULL;
}
@@ -567,7 +567,6 @@ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *
sysname = strrchr(path, '/') + 1;
driver = read_symlink(path, "driver");
subsystem = read_symlink(path, "subsystem");
udev_list_entry_add(&udev_device->properties, "SUBSYSTEM", subsystem, 0);
udev_list_entry_add(&udev_device->properties, "SYSNAME", sysname, 0);