diff options
Diffstat (limited to 'drivers/usb/core/inode.c')
| -rw-r--r-- | drivers/usb/core/inode.c | 53 |
1 files changed, 33 insertions, 20 deletions
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index 640f41e4702..c44bbedec81 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -39,13 +39,13 @@ #include <linux/usbdevice_fs.h> #include <linux/smp_lock.h> #include <linux/parser.h> +#include <linux/notifier.h> #include <asm/byteorder.h> #include "usb.h" #include "hcd.h" static struct super_operations usbfs_ops; static struct file_operations default_file_operations; -static struct inode_operations usbfs_dir_inode_operations; static struct vfsmount *usbfs_mount; static int usbfs_mount_count; /* = 0 */ static int ignore_mount = 0; @@ -261,7 +261,7 @@ static struct inode *usbfs_get_inode (struct super_block *sb, int mode, dev_t de inode->i_fop = &default_file_operations; break; case S_IFDIR: - inode->i_op = &usbfs_dir_inode_operations; + inode->i_op = &simple_dir_inode_operations; inode->i_fop = &simple_dir_operations; /* directory inodes start off with i_nlink == 2 (for "." entry) */ @@ -416,10 +416,6 @@ static struct file_operations default_file_operations = { .llseek = default_file_lseek, }; -static struct inode_operations usbfs_dir_inode_operations = { - .lookup = simple_lookup, -}; - static struct super_operations usbfs_ops = { .statfs = simple_statfs, .drop_inode = generic_delete_inode, @@ -619,7 +615,7 @@ void usbfs_update_special (void) } } -void usbfs_add_bus(struct usb_bus *bus) +static void usbfs_add_bus(struct usb_bus *bus) { struct dentry *parent; char name[8]; @@ -642,12 +638,9 @@ void usbfs_add_bus(struct usb_bus *bus) err ("error creating usbfs bus entry"); return; } - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_remove_bus(struct usb_bus *bus) +static void usbfs_remove_bus(struct usb_bus *bus) { if (bus->usbfs_dentry) { fs_remove_file (bus->usbfs_dentry); @@ -659,12 +652,9 @@ void usbfs_remove_bus(struct usb_bus *bus) remove_special_files(); num_buses = 0; } - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_add_device(struct usb_device *dev) +static void usbfs_add_device(struct usb_device *dev) { char name[8]; int i; @@ -690,12 +680,9 @@ void usbfs_add_device(struct usb_device *dev) } if (dev->usbfs_dentry->d_inode) dev->usbfs_dentry->d_inode->i_size = i_size; - - usbfs_update_special(); - usbfs_conn_disc_event(); } -void usbfs_remove_device(struct usb_device *dev) +static void usbfs_remove_device(struct usb_device *dev) { struct dev_state *ds; struct siginfo sinfo; @@ -713,13 +700,36 @@ void usbfs_remove_device(struct usb_device *dev) sinfo.si_errno = EPIPE; sinfo.si_code = SI_ASYNCIO; sinfo.si_addr = ds->disccontext; - send_sig_info(ds->discsignr, &sinfo, ds->disctask); + kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid); } } +} + +static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev) +{ + switch (action) { + case USB_DEVICE_ADD: + usbfs_add_device(dev); + break; + case USB_DEVICE_REMOVE: + usbfs_remove_device(dev); + break; + case USB_BUS_ADD: + usbfs_add_bus(dev); + break; + case USB_BUS_REMOVE: + usbfs_remove_bus(dev); + } + usbfs_update_special(); usbfs_conn_disc_event(); + return NOTIFY_OK; } +static struct notifier_block usbfs_nb = { + .notifier_call = usbfs_notify, +}; + /* --------------------------------------------------------------------- */ static struct proc_dir_entry *usbdir = NULL; @@ -732,6 +742,8 @@ int __init usbfs_init(void) if (retval) return retval; + usb_register_notify(&usbfs_nb); + /* create mount point for usbfs */ usbdir = proc_mkdir("usb", proc_bus); @@ -740,6 +752,7 @@ int __init usbfs_init(void) void usbfs_cleanup(void) { + usb_unregister_notify(&usbfs_nb); unregister_filesystem(&usb_fs_type); if (usbdir) remove_proc_entry("usb", proc_bus); |