|
@@ -173,12 +173,11 @@ int coda_permission(struct inode *inode, int mask, struct nameidata *nd)
|
|
|
|
|
|
out:
|
|
|
unlock_kernel();
|
|
|
-
|
|
|
- return error;
|
|
|
+ return error;
|
|
|
}
|
|
|
|
|
|
|
|
|
-static inline void coda_dir_changed(struct inode *dir, int link)
|
|
|
+static inline void coda_dir_update_mtime(struct inode *dir)
|
|
|
{
|
|
|
#ifdef REQUERY_VENUS_FOR_MTIME
|
|
|
/* invalidate the directory cnode's attributes so we refetch the
|
|
@@ -186,12 +185,27 @@ static inline void coda_dir_changed(struct inode *dir, int link)
|
|
|
coda_flag_inode(dir, C_VATTR);
|
|
|
#else
|
|
|
/* optimistically we can also act as if our nose bleeds. The
|
|
|
- * granularity of the mtime is coarse anyways so we might actually be
|
|
|
- * right most of the time. Note: we only do this for directories. */
|
|
|
+ * granularity of the mtime is coarse anyways so we might actually be
|
|
|
+ * right most of the time. Note: we only do this for directories. */
|
|
|
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
|
|
|
#endif
|
|
|
- if (link)
|
|
|
- dir->i_nlink += link;
|
|
|
+}
|
|
|
+
|
|
|
+/* we have to wrap inc_nlink/drop_nlink because sometimes userspace uses a
|
|
|
+ * trick to fool GNU find's optimizations. If we can't be sure of the link
|
|
|
+ * (because of volume mount points) we set i_nlink to 1 which forces find
|
|
|
+ * to consider every child as a possible directory. We should also never
|
|
|
+ * see an increment or decrement for deleted directories where i_nlink == 0 */
|
|
|
+static inline void coda_dir_inc_nlink(struct inode *dir)
|
|
|
+{
|
|
|
+ if (dir->i_nlink >= 2)
|
|
|
+ inc_nlink(dir);
|
|
|
+}
|
|
|
+
|
|
|
+static inline void coda_dir_drop_nlink(struct inode *dir)
|
|
|
+{
|
|
|
+ if (dir->i_nlink > 2)
|
|
|
+ drop_nlink(dir);
|
|
|
}
|
|
|
|
|
|
/* creation routines: create, mknod, mkdir, link, symlink */
|
|
@@ -229,10 +243,10 @@ static int coda_create(struct inode *dir, struct dentry *de, int mode, struct na
|
|
|
}
|
|
|
|
|
|
/* invalidate the directory cnode's attributes */
|
|
|
- coda_dir_changed(dir, 0);
|
|
|
+ coda_dir_update_mtime(dir);
|
|
|
unlock_kernel();
|
|
|
d_instantiate(de, inode);
|
|
|
- return 0;
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
static int coda_mkdir(struct inode *dir, struct dentry *de, int mode)
|
|
@@ -268,12 +282,13 @@ static int coda_mkdir(struct inode *dir, struct dentry *de, int mode)
|
|
|
d_drop(de);
|
|
|
return PTR_ERR(inode);
|
|
|
}
|
|
|
-
|
|
|
+
|
|
|
/* invalidate the directory cnode's attributes */
|
|
|
- coda_dir_changed(dir, 1);
|
|
|
+ coda_dir_inc_nlink(dir);
|
|
|
+ coda_dir_update_mtime(dir);
|
|
|
unlock_kernel();
|
|
|
d_instantiate(de, inode);
|
|
|
- return 0;
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
/* try to make de an entry in dir_inodde linked to source_de */
|
|
@@ -296,16 +311,16 @@ static int coda_link(struct dentry *source_de, struct inode *dir_inode,
|
|
|
error = venus_link(dir_inode->i_sb, coda_i2f(inode),
|
|
|
coda_i2f(dir_inode), (const char *)name, len);
|
|
|
|
|
|
- if (error) {
|
|
|
+ if (error) {
|
|
|
d_drop(de);
|
|
|
goto out;
|
|
|
}
|
|
|
|
|
|
- coda_dir_changed(dir_inode, 0);
|
|
|
+ coda_dir_update_mtime(dir_inode);
|
|
|
atomic_inc(&inode->i_count);
|
|
|
d_instantiate(de, inode);
|
|
|
inc_nlink(inode);
|
|
|
-
|
|
|
+
|
|
|
out:
|
|
|
unlock_kernel();
|
|
|
return(error);
|
|
@@ -336,18 +351,18 @@ static int coda_symlink(struct inode *dir_inode, struct dentry *de,
|
|
|
|
|
|
/*
|
|
|
* This entry is now negative. Since we do not create
|
|
|
- * an inode for the entry we have to drop it.
|
|
|
+ * an inode for the entry we have to drop it.
|
|
|
*/
|
|
|
d_drop(de);
|
|
|
- error = venus_symlink(dir_inode->i_sb, coda_i2f(dir_inode), name, len,
|
|
|
+ error = venus_symlink(dir_inode->i_sb, coda_i2f(dir_inode), name, len,
|
|
|
symname, symlen);
|
|
|
|
|
|
/* mtime is no good anymore */
|
|
|
if ( !error )
|
|
|
- coda_dir_changed(dir_inode, 0);
|
|
|
+ coda_dir_update_mtime(dir_inode);
|
|
|
|
|
|
unlock_kernel();
|
|
|
- return error;
|
|
|
+ return error;
|
|
|
}
|
|
|
|
|
|
/* destruction routines: unlink, rmdir */
|
|
@@ -360,17 +375,16 @@ int coda_unlink(struct inode *dir, struct dentry *de)
|
|
|
lock_kernel();
|
|
|
coda_vfs_stat.unlink++;
|
|
|
|
|
|
- error = venus_remove(dir->i_sb, coda_i2f(dir), name, len);
|
|
|
- if ( error ) {
|
|
|
+ error = venus_remove(dir->i_sb, coda_i2f(dir), name, len);
|
|
|
+ if ( error ) {
|
|
|
unlock_kernel();
|
|
|
- return error;
|
|
|
- }
|
|
|
+ return error;
|
|
|
+ }
|
|
|
|
|
|
- coda_dir_changed(dir, 0);
|
|
|
+ coda_dir_update_mtime(dir);
|
|
|
drop_nlink(de->d_inode);
|
|
|
unlock_kernel();
|
|
|
-
|
|
|
- return 0;
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
int coda_rmdir(struct inode *dir, struct dentry *de)
|
|
@@ -388,49 +402,49 @@ int coda_rmdir(struct inode *dir, struct dentry *de)
|
|
|
}
|
|
|
error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len);
|
|
|
|
|
|
- if ( error ) {
|
|
|
+ if ( error ) {
|
|
|
unlock_kernel();
|
|
|
- return error;
|
|
|
- }
|
|
|
+ return error;
|
|
|
+ }
|
|
|
|
|
|
- coda_dir_changed(dir, -1);
|
|
|
+ coda_dir_drop_nlink(dir);
|
|
|
+ coda_dir_update_mtime(dir);
|
|
|
drop_nlink(de->d_inode);
|
|
|
d_delete(de);
|
|
|
unlock_kernel();
|
|
|
-
|
|
|
- return 0;
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
/* rename */
|
|
|
-static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
|
|
|
+static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
|
|
|
struct inode *new_dir, struct dentry *new_dentry)
|
|
|
{
|
|
|
- const char *old_name = old_dentry->d_name.name;
|
|
|
- const char *new_name = new_dentry->d_name.name;
|
|
|
+ const char *old_name = old_dentry->d_name.name;
|
|
|
+ const char *new_name = new_dentry->d_name.name;
|
|
|
int old_length = old_dentry->d_name.len;
|
|
|
int new_length = new_dentry->d_name.len;
|
|
|
- int link_adjust = 0;
|
|
|
- int error;
|
|
|
+ int error;
|
|
|
|
|
|
lock_kernel();
|
|
|
coda_vfs_stat.rename++;
|
|
|
|
|
|
- error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),
|
|
|
- coda_i2f(new_dir), old_length, new_length,
|
|
|
+ error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),
|
|
|
+ coda_i2f(new_dir), old_length, new_length,
|
|
|
(const char *) old_name, (const char *)new_name);
|
|
|
|
|
|
- if ( !error ) {
|
|
|
+ if ( !error ) {
|
|
|
if ( new_dentry->d_inode ) {
|
|
|
- if ( S_ISDIR(new_dentry->d_inode->i_mode) )
|
|
|
- link_adjust = 1;
|
|
|
-
|
|
|
- coda_dir_changed(old_dir, -link_adjust);
|
|
|
- coda_dir_changed(new_dir, link_adjust);
|
|
|
+ if ( S_ISDIR(new_dentry->d_inode->i_mode) ) {
|
|
|
+ coda_dir_drop_nlink(old_dir);
|
|
|
+ coda_dir_inc_nlink(new_dir);
|
|
|
+ }
|
|
|
+ coda_dir_update_mtime(old_dir);
|
|
|
+ coda_dir_update_mtime(new_dir);
|
|
|
coda_flag_inode(new_dentry->d_inode, C_VATTR);
|
|
|
} else {
|
|
|
coda_flag_inode(old_dir, C_VATTR);
|
|
|
coda_flag_inode(new_dir, C_VATTR);
|
|
|
- }
|
|
|
+ }
|
|
|
}
|
|
|
unlock_kernel();
|
|
|
|