diff options
Diffstat (limited to 'udev-remove.c')
-rw-r--r-- | udev-remove.c | 127 |
1 files changed, 61 insertions, 66 deletions
diff --git a/udev-remove.c b/udev-remove.c index 0f14a3d685..d42ed4be78 100644 --- a/udev-remove.c +++ b/udev-remove.c @@ -34,47 +34,43 @@ #include "udevdb.h" #include "libsysfs/libsysfs.h" - -/* - * Look up the sysfs path in the database to see if we have named this device - * something different from the kernel name. If we have, us it. If not, use - * the default kernel name for lack of anything else to know to do. - */ -static char *get_name(char *path, int major, int minor) +static int delete_path(char *path) { - static char name[100]; - struct udevice *dev; - char *temp; + char *pos; + int retval; - dev = udevdb_get_dev(path); - if (dev != NULL) { - strcpy(name, dev->name); - goto exit; + pos = strrchr(path, '/'); + while (1) { + *pos = '\0'; + pos = strrchr(path, '/'); + + /* don't remove the last one */ + if ((pos == path) || (pos == NULL)) + break; + + /* remove if empty */ + retval = rmdir(path); + if (retval) { + if (errno == ENOTEMPTY) + return 0; + dbg("rmdir(%s) failed with error '%s'", + path, strerror(errno)); + break; + } + dbg("removed '%s'", path); } - - dbg("'%s' not found in database, falling back on default name", path); - temp = strrchr(path, '/'); - if (temp == NULL) - return NULL; - strncpy(name, &temp[1], sizeof(name)); - -exit: - dbg("name is '%s'", name); - return &name[0]; + return 0; } -/* - * We also want to clean up any symlinks that were created in create_node() - */ -static int delete_node(char *name) +static int delete_node(struct udevice *dev) { char filename[255]; int retval; strncpy(filename, udev_root, sizeof(filename)); - strncat(filename, name, sizeof(filename)); + strncat(filename, dev->name, sizeof(filename)); - dbg("unlinking '%s'", filename); + dbg("unlinking node '%s'", filename); retval = unlink(filename); if (retval) { dbg("unlink(%s) failed with error '%s'", @@ -83,49 +79,48 @@ static int delete_node(char *name) } /* remove subdirectories */ - if (strchr(name, '/')) { - char *pos; - - pos = strrchr(filename, '/'); - while (1) { - *pos = 0x00; - pos = strrchr(filename, '/'); - - /* don't remove the last one */ - if ((pos == filename) || (pos == NULL)) - break; - - /* remove if empty */ - retval = rmdir(filename); - if (retval) { - if (errno == ENOTEMPTY) - return 0; - dbg("rmdir(%s) failed with error '%s'", - filename, strerror(errno)); - break; - } - dbg("removed '%s'", filename); + if (strchr(dev->name, '/')) + delete_path(filename); + + if (*dev->symlink) { + strncpy(filename, udev_root, sizeof(filename)); + strncat(filename, dev->symlink, sizeof(filename)); + dbg("unlinking symlink '%s'", filename); + retval = unlink(filename); + if (retval) { + dbg("unlink(%s) failed with error '%s'", + filename, strerror(errno)); + return retval; + } + if (strchr(dev->symlink, '/')) { + delete_path(filename); } } + return retval; } -int udev_remove_device(char *device, char *subsystem) +/* + * Look up the sysfs path in the database to see if we have named this device + * something different from the kernel name. If we have, us it. If not, use + * the default kernel name for lack of anything else to know to do. + */ +int udev_remove_device(char *path, char *subsystem) { - char *name; - int retval = 0; + char name[100]; + struct udevice *dev; + char *temp; - name = get_name(device, 0, 0); - if (name == NULL) { - dbg ("get_name failed"); - retval = -ENODEV; - goto exit; + dev = udevdb_get_dev(path); + if (dev == NULL) { + dbg("'%s' not found in database, falling back on default name", path); + temp = strrchr(path, '/'); + if (temp == NULL) + return -ENODEV; + strncpy(name, &temp[1], sizeof(name)); } - udevdb_delete_dev(device); - - return delete_node(name); - -exit: - return retval; + dbg("name is '%s'", dev->name); + udevdb_delete_dev(path); + return delete_node(dev); } |