[PATCH] r/o bind mounts: unlink: monitor i_nlink

[safe/jmp/linux-2.6] / drivers / usb / core / inode.c

diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 95f5ad9..88002e4 100644 (file)
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -27,7 +27,6 @@
 
 /*****************************************************************************/
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/mount.h>
@@ -45,7 +44,7 @@
 #include "hcd.h"
 
 static struct super_operations usbfs_ops;
-static struct file_operations default_file_operations;
+static const struct file_operations default_file_operations;
 static struct vfsmount *usbfs_mount;
 static int usbfs_mount_count;  /* = 0 */
 static int ignore_mount = 0;
@@ -201,7 +200,7 @@ static void update_sb(struct super_block *sb)
        if (!root)
                return;
 
-       mutex_lock(&root->d_inode->i_mutex);
+       mutex_lock_nested(&root->d_inode->i_mutex, I_MUTEX_PARENT);
 
        list_for_each_entry(bus, &root->d_subdirs, d_u.d_child) {
                if (bus->d_inode) {
@@ -250,7 +249,6 @@ static struct inode *usbfs_get_inode (struct super_block *sb, int mode, dev_t de
                inode->i_mode = mode;
                inode->i_uid = current->fsuid;
                inode->i_gid = current->fsgid;
-               inode->i_blksize = PAGE_CACHE_SIZE;
                inode->i_blocks = 0;
                inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
                switch (mode & S_IFMT) {
@@ -334,7 +332,7 @@ static int usbfs_unlink (struct inode *dir, struct dentry *dentry)
 {
        struct inode *inode = dentry->d_inode;
        mutex_lock(&inode->i_mutex);
-       dentry->d_inode->i_nlink--;
+       drop_nlink(dentry->d_inode);
        dput(dentry);
        mutex_unlock(&inode->i_mutex);
        d_delete(dentry);
@@ -349,10 +347,11 @@ static int usbfs_rmdir(struct inode *dir, struct dentry *dentry)
        mutex_lock(&inode->i_mutex);
        dentry_unhash(dentry);
        if (usbfs_empty(dentry)) {
-               dentry->d_inode->i_nlink -= 2;
+               drop_nlink(dentry->d_inode);
+               drop_nlink(dentry->d_inode);
                dput(dentry);
                inode->i_flags |= S_DEAD;
-               dir->i_nlink--;
+               drop_nlink(dir);
                error = 0;
        }
        mutex_unlock(&inode->i_mutex);
@@ -403,13 +402,13 @@ static loff_t default_file_lseek (struct file *file, loff_t offset, int orig)
 
 static int default_open (struct inode *inode, struct file *file)
 {
-       if (inode->u.generic_ip)
-               file->private_data = inode->u.generic_ip;
+       if (inode->i_private)
+               file->private_data = inode->i_private;
 
        return 0;
 }
 
-static struct file_operations default_file_operations = {
+static const struct file_operations default_file_operations = {
        .read =         default_read_file,
        .write =        default_write_file,
        .open =         default_open,
@@ -496,7 +495,7 @@ static int fs_create_by_name (const char *name, mode_t mode,
 
 static struct dentry *fs_create_file (const char *name, mode_t mode,
                                      struct dentry *parent, void *data,
-                                     struct file_operations *fops,
+                                     const struct file_operations *fops,
                                      uid_t uid, gid_t gid)
 {
        struct dentry *dentry;
@@ -510,7 +509,7 @@ static struct dentry *fs_create_file (const char *name, mode_t mode,
        } else {
                if (dentry->d_inode) {
                        if (data)
-                               dentry->d_inode->u.generic_ip = data;
+                               dentry->d_inode->i_private = data;
                        if (fops)
                                dentry->d_inode->i_fop = fops;
                        dentry->d_inode->i_uid = uid;
@@ -528,7 +527,7 @@ static void fs_remove_file (struct dentry *dentry)
        if (!parent || !parent->d_inode)
                return;
 
-       mutex_lock(&parent->d_inode->i_mutex);
+       mutex_lock_nested(&parent->d_inode->i_mutex, I_MUTEX_PARENT);
        if (usbfs_positive(dentry)) {
                if (dentry->d_inode) {
                        if (S_ISDIR(dentry->d_inode->i_mode))
@@ -569,7 +568,7 @@ static int create_special_files (void)
        ignore_mount = 1;
 
        /* create the devices special file */
-       retval = simple_pin_fs("usbfs", &usbfs_mount, &usbfs_mount_count);
+       retval = simple_pin_fs(&usb_fs_type, &usbfs_mount, &usbfs_mount_count);
        if (retval) {
                err ("Unable to get usbfs mount");
                goto exit;
@@ -696,11 +695,11 @@ static void usbfs_remove_device(struct usb_device *dev)
                wake_up_all(&ds->wait);
                list_del_init(&ds->list);
                if (ds->discsignr) {
-                       sinfo.si_signo = SIGPIPE;
+                       sinfo.si_signo = ds->discsignr;
                        sinfo.si_errno = EPIPE;
                        sinfo.si_code = SI_ASYNCIO;
                        sinfo.si_addr = ds->disccontext;
-                       kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid);
+                       kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid, ds->secid);
                }
        }
 }