chiark / gitweb /
[PATCH] got "remove of named devices" working.
authorgreg@kroah.com <greg@kroah.com>
Sat, 18 Oct 2003 06:32:17 +0000 (23:32 -0700)
committerGreg KH <gregkh@suse.de>
Wed, 27 Apr 2005 04:01:41 +0000 (21:01 -0700)
database code still needs some major cleanup.

udev-add.c
udev-remove.c
udevdb.c
udevdb.h

index 6060bcf..116ab2b 100644 (file)
@@ -137,7 +137,6 @@ int udev_add_device(char *device, char *subsystem)
 {
        struct sysfs_class_device *class_dev;
        struct device_attr attr;
-       struct udevice dbdev;
        int major;
        int minor;
        char type;
@@ -164,33 +163,17 @@ int udev_add_device(char *device, char *subsystem)
 
        retval = get_major_minor(class_dev, &major, &minor);
        if (retval) {
-               dbg ("get_major_minor failed");
+               dbg("get_major_minor failed");
                goto exit;
        }
-       memset(&dbdev, 0, sizeof(dbdev));
-       strncpy(dbdev.name, attr.name, NAME_SIZE);
-       if (class_dev->sysdevice) {
-               strncpy(dbdev.sysfs_path, class_dev->sysdevice->directory->path, PATH_SIZE);
-               strncpy(dbdev.bus_id, class_dev->sysdevice->bus_id, ID_SIZE);
-       }
-       strncpy(dbdev.class_dev_name, class_dev->name, NAME_SIZE);
-       if ((sysfs_get_name_from_path(subsystem, dbdev.class_name, NAME_SIZE)) != 0)
-               strcpy(dbdev.class_name, "unkown");
-       strcpy(dbdev.bus_name, "unknown");
-       if (class_dev->driver != NULL)
-               strncpy(dbdev.driver, class_dev->driver->name, NAME_SIZE);
-       else
-               strcpy(dbdev.driver, "unkown");
-       dbdev.type = type;
-       dbdev.major = major;
-       dbdev.minor = minor;
-       dbdev.mode = attr.mode;
 
-       sysfs_close_class_device(class_dev);
+       retval = udevdb_add_device(device, class_dev, attr.name, type, major, minor, attr.mode);
 
-       retval = udevdb_add_udevice(&dbdev);
        if (retval != 0)
-               goto exit;
+               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);
 
index 29063ef..9862a6f 100644 (file)
@@ -45,6 +45,11 @@ static char *get_name(char *dev, int major, int minor)
        static char name[100];
        char *temp;
 
+       temp = udevdb_get_udevice_by_sysfs(dev);
+       dbg("udevdb_get_udevice_by_sysfs returned %s", temp);
+       if (temp != NULL)
+               return temp;
+       
        temp = strrchr(dev, '/');
        if (temp == NULL)
                return NULL;
index fb34ca6..05bd72a 100644 (file)
--- a/udevdb.c
+++ b/udevdb.c
@@ -37,6 +37,7 @@
 #include "namedev.h"
 #include "udevdb.h"
 #include "tdb/tdb.h"
+#include "libsysfs/libsysfs.h"
 
 static TDB_CONTEXT *udevdb;
 
@@ -55,11 +56,15 @@ struct classdb_record {
        char name[NAME_SIZE];
 };
 
+struct sysfsdb_record {
+       char name[PATH_SIZE];
+};
+
 /**
  * namedb_record - device name is key, remaining udevice info stored here.
  */
 struct namedb_record {
-       char sysfs_path[PATH_SIZE];
+       char sysfs_dev_path[PATH_SIZE];
        char class_dev_name[NAME_SIZE];
        char class_name[NAME_SIZE];
        char bus[BUS_SIZE];
@@ -177,6 +182,41 @@ static struct classdb_record *classdb_fetch(const char *cls,
        return rec;
 }
 
+static struct sysfsdb_record *sysfsdb_fetch(const char *path)
+{
+       TDB_DATA key, data;
+       char keystr[PATH_SIZE+2]; 
+       struct sysfsdb_record *rec = NULL;
+
+       if (strlen(path) >= PATH_SIZE)
+               return NULL;
+
+       memset(keystr, 0, sizeof(keystr));
+       strcpy(keystr, path);
+
+       dbg("keystr = %s", keystr);
+
+       key.dptr = (void *)keystr;
+       key.dsize = strlen(keystr) + 1;
+
+       data = tdb_fetch(udevdb, key);
+       if (data.dptr == NULL || data.dsize == 0) {
+               dbg("tdb_fetch did not work :(");
+               return NULL;
+       }
+       
+       rec = (struct sysfsdb_record *)malloc(sizeof(struct sysfsdb_record));
+       if (rec == NULL) {
+               free(data.dptr);
+               return NULL;
+       }
+       
+       memcpy(rec, data.dptr, sizeof(struct sysfsdb_record));
+       free(data.dptr);
+
+       return rec;
+}
+
 /**
  * namedb_fetch
  */
@@ -273,6 +313,32 @@ static int classdb_store(const struct udevice *dev)
        return retval;
 }
 
+static int sysfs_store(const char *path, const struct udevice *dev)
+{
+       TDB_DATA key, data;
+       char keystr[PATH_SIZE+2];
+       struct sysfsdb_record rec;
+       int retval = 0;
+
+       if (dev == NULL)
+               return -ENODEV;
+
+       memset(keystr, 0, sizeof(keystr));
+       strcpy(keystr, path);
+       dbg("keystr = %s", keystr);
+
+       key.dptr = (void *)keystr;
+       key.dsize = strlen(keystr) + 1;
+       
+       strcpy(rec.name, dev->name);
+
+       data.dptr = (void *) &rec;
+       data.dsize = sizeof(rec);
+       
+       retval = tdb_store(udevdb, key, data, TDB_REPLACE); 
+       return retval;
+}
+
 /**
  * namedb_store
  */
@@ -292,7 +358,7 @@ static int namedb_store(const struct udevice *dev)
        key.dptr = (void *)keystr;
        key.dsize = strlen(keystr) + 1;
        
-       strcpy(rec.sysfs_path, dev->sysfs_path);
+       strcpy(rec.sysfs_dev_path, dev->sysfs_dev_path);
        strcpy(rec.bus, dev->bus_name);
        strcpy(rec.id, dev->bus_id);
        strcpy(rec.class_dev_name, dev->class_dev_name);
@@ -409,18 +475,41 @@ int udevdb_delete_udevice(const char *name)
 }
 
 /**
- * udevdb_add_udevice: adds udevice to database
+ * udevdb_add_device: adds class device to database
  */
-int udevdb_add_udevice(const struct udevice *dev)
+int udevdb_add_device(const char *device, const struct sysfs_class_device *class_dev, const char *name, char type, int major, int minor, int mode)
 {
-       if (dev == NULL) 
-               return -1;
+       struct udevice dbdev;
+
+       if (class_dev == NULL)
+               return -ENODEV;
 
-       if ((busdb_store(dev)) != 0)
+       memset(&dbdev, 0, sizeof(dbdev));
+       strncpy(dbdev.name, name, NAME_SIZE);
+       if (class_dev->sysdevice) {
+               strncpy(dbdev.sysfs_dev_path, class_dev->sysdevice->directory->path, PATH_SIZE);
+               strncpy(dbdev.bus_id, class_dev->sysdevice->bus_id, ID_SIZE);
+       }
+       strncpy(dbdev.class_dev_name, class_dev->name, NAME_SIZE);
+//     if ((sysfs_get_name_from_path(subsystem, dbdev.class_name, NAME_SIZE)) != 0)
+//             strcpy(dbdev.class_name, "unknown");
+       strcpy(dbdev.bus_name, "unknown");
+       if (class_dev->driver != NULL)
+               strncpy(dbdev.driver, class_dev->driver->name, NAME_SIZE);
+       else
+               strcpy(dbdev.driver, "unknown");
+       dbdev.type = type;
+       dbdev.major = major;
+       dbdev.minor = minor;
+       dbdev.mode = mode;
+       
+       if ((busdb_store(&dbdev)) != 0)
                return -1;
-       if ((classdb_store(dev)) != 0)
+       if ((classdb_store(&dbdev)) != 0)
                return -1;
-       if ((namedb_store(dev)) != 0)
+       if ((sysfs_store(device, &dbdev)) != 0)
+               return -1;
+       if ((namedb_store(&dbdev)) != 0)
                return -1;
 
        return 0;
@@ -448,7 +537,7 @@ struct udevice *udevdb_get_udevice(const char *name)
        }
 
        strcpy(dev->name, name);
-       strcpy(dev->sysfs_path, nrec->sysfs_path);
+       strcpy(dev->sysfs_dev_path, nrec->sysfs_dev_path);
        strcpy(dev->class_dev_name, nrec->class_dev_name);
        strcpy(dev->class_name, nrec->class_name);
        strcpy(dev->bus_name, nrec->bus);
@@ -506,6 +595,27 @@ struct udevice *udevdb_get_udevice_by_class(const char *cls,
        return dev;
 }
 
+
+char *udevdb_get_udevice_by_sysfs(const char *path)
+{
+       struct sysfsdb_record *crec = NULL;
+//     struct udevice *dev = NULL;
+
+       if (path == NULL)
+               return NULL;
+
+       crec = sysfsdb_fetch(path);
+       if (crec == NULL)
+               return NULL;
+
+       // FIXME leak!!!
+       return crec->name;
+//     dev = udevdb_get_udevice(crec->name);
+//     free(crec);
+//
+//     return dev;
+}
+
 /**
  * udevdb_exit: closes database
  */
index 089af29..8e72ede 100644 (file)
--- a/udevdb.h
+++ b/udevdb.h
@@ -16,7 +16,7 @@
 
 struct udevice {
        char name[NAME_SIZE];
-       char sysfs_path[PATH_SIZE];
+       char sysfs_dev_path[PATH_SIZE];
        char class_dev_name[NAME_SIZE];
        char class_name[NAME_SIZE];
        char bus_id[NAME_SIZE];
@@ -32,11 +32,12 @@ struct udevice {
 extern void udevdb_exit(void);
 extern int udevdb_init(int init_flag);
 extern int udevdb_delete_udevice(const char *name);
-extern int udevdb_add_udevice(const struct udevice *dev);
+extern int udevdb_add_device(const char *device, const struct sysfs_class_device *class_dev, const char *name, char type, int major, int minor, int mode);
 extern struct udevice *udevdb_get_udevice(const char *name);
 extern struct udevice *udevdb_get_udevice_by_bus(const char *bus, 
                                                        const char *id);
 extern struct udevice *udevdb_get_udevice_by_class(const char *cls,
                                                        const char *cls_dev);
+extern char *udevdb_get_udevice_by_sysfs(const char *path);
 
 #endif /* _UDEVDB_H_ */