#include "udev.h"
#include "udev_version.h"
#include "namedev.h"
+#include "udevdb.h"
#include "libsysfs/libsysfs.h"
-static char sysfs_path[SYSFS_PATH_MAX];
-
/*
* Right now the major/minor of a device is stored in a file called
* "dev" in sysfs.
int retval = 0;
strncpy(filename, UDEV_ROOT, sizeof(filename));
strncat(filename, name, sizeof(filename));
- if (type == 'b') {
- mode |= S_IFBLK;
- } else if ((type == 'c') || (type == 'u')){
- mode |= S_IFCHR;
- } else if ( type == 'p') {
- mode |= S_IFIFO;
- } else {
- dbg("unknown node type %c\n", type);
- return -1;
- }
+ switch (type) {
+ case 'b':
+ mode |= S_IFBLK;
+ break;
+ case 'c':
+ case 'u':
+ mode |= S_IFCHR;
+ break;
+ case 'p':
+ mode |= S_IFIFO;
+ break;
+ default:
+ dbg("unknown node type %c\n", type);
+ return -EINVAL;
+ }
+ dbg("mknod(%s, %#o, %u, %u)", filename, mode, major, minor);
retval = mknod(filename,mode,makedev(major,minor));
+ if (retval)
+ dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
+ filename, mode, major, minor, strerror(errno));
return retval;
-
}
struct sysfs_class_device *get_class_dev(char *device_name)
{
+ char sysfs_path[SYSFS_PATH_MAX];
char dev_path[SYSFS_PATH_MAX];
- struct sysfs_class_device *class_dev;
+ int retval;
+ struct sysfs_class_device *class_dev = NULL;
+
+
+ retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
+ dbg("sysfs_path = %s", sysfs_path);
+ if (retval) {
+ dbg("sysfs_get_mnt_path failed");
+ goto exit;
+ }
strcpy(dev_path, sysfs_path);
strcat(dev_path, device_name);
class_dev = sysfs_open_class_device(dev_path);
if (class_dev == NULL) {
dbg ("sysfs_open_class_device failed");
- return NULL;
+ goto exit;
}
dbg("class_dev->name = %s", class_dev->name);
+exit:
return class_dev;
}
-static int udev_init(void)
-{
- int retval;
-
- retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
- dbg("sysfs_path = %s", sysfs_path);
- return retval;
-}
-
int udev_add_device(char *device, char *subsystem)
{
struct sysfs_class_device *class_dev;
struct device_attr attr;
- //char *name;
int major;
int minor;
char type;
- //int mode;
int retval = -EINVAL;
- /* sleep for a second or two to give the kernel a chance to
- * create the dev file
- */
- sleep(1);
-
- udev_init();
-
/* for now, the block layer is the only place where block devices are */
if (strcmp(subsystem, "block") == 0)
type = 'b';
else
type = 'c';
+ /* sleep for a second or two to give the kernel a chance to
+ * create the dev file
+ */
+ sleep(1);
+
class_dev = get_class_dev(device);
if (class_dev == NULL)
goto exit;
retval = get_major_minor(class_dev, &major, &minor);
if (retval) {
- dbg ("get_major_minor failed");
+ dbg("get_major_minor failed");
goto exit;
}
+ retval = udevdb_add_device(device, class_dev, attr.name, type, major, minor, attr.mode);
+
+ if (retval != 0)
+ dbg("udevdb_add_device failed, but we are going to try to create the node anyway. "
+ "But remove might not work properly for this device.");
+
sysfs_close_class_device(class_dev);
return create_node(attr.name, type, major, minor, attr.mode);