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@@ -1,5 +1,5 @@
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/*
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- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*
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* Ported the filesystem routines to 2.5.
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@@ -31,14 +31,14 @@ struct hostfs_inode_info {
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static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode)
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{
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- return(list_entry(inode, struct hostfs_inode_info, vfs_inode));
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+ return list_entry(inode, struct hostfs_inode_info, vfs_inode);
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}
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#define FILE_HOSTFS_I(file) HOSTFS_I((file)->f_path.dentry->d_inode)
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int hostfs_d_delete(struct dentry *dentry)
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{
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- return(1);
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+ return 1;
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}
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struct dentry_operations hostfs_dentry_ops = {
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@@ -79,7 +79,7 @@ static int __init hostfs_args(char *options, int *add)
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}
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options = ptr;
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}
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- return(0);
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+ return 0;
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}
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__uml_setup("hostfs=", hostfs_args,
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@@ -110,7 +110,8 @@ static char *dentry_name(struct dentry *dentry, int extra)
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root = HOSTFS_I(parent->d_inode)->host_filename;
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len += strlen(root);
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name = kmalloc(len + extra + 1, GFP_KERNEL);
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- if(name == NULL) return(NULL);
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+ if(name == NULL)
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+ return NULL;
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name[len] = '\0';
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parent = dentry;
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@@ -122,7 +123,7 @@ static char *dentry_name(struct dentry *dentry, int extra)
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parent = parent->d_parent;
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}
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strncpy(name, root, strlen(root));
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- return(name);
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+ return name;
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}
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static char *inode_name(struct inode *ino, int extra)
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@@ -130,7 +131,7 @@ static char *inode_name(struct inode *ino, int extra)
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struct dentry *dentry;
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dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias);
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- return(dentry_name(dentry, extra));
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+ return dentry_name(dentry, extra);
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}
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static int read_name(struct inode *ino, char *name)
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@@ -149,14 +150,14 @@ static int read_name(struct inode *ino, char *name)
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&ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime,
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&ino->i_ctime, &i_blksize, &i_blocks, -1);
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if(err)
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- return(err);
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+ return err;
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ino->i_ino = i_ino;
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ino->i_mode = i_mode;
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ino->i_nlink = i_nlink;
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ino->i_size = i_size;
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ino->i_blocks = i_blocks;
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- return(0);
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+ return 0;
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}
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static char *follow_link(char *link)
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@@ -181,11 +182,11 @@ static char *follow_link(char *link)
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goto out_free;
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if(*name == '/')
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- return(name);
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+ return name;
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end = strrchr(link, '/');
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if(end == NULL)
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- return(name);
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+ return name;
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*(end + 1) = '\0';
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len = strlen(link) + strlen(name) + 1;
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@@ -199,12 +200,12 @@ static char *follow_link(char *link)
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sprintf(resolved, "%s%s", link, name);
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kfree(name);
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kfree(link);
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- return(resolved);
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+ return resolved;
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out_free:
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kfree(name);
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out:
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- return(ERR_PTR(n));
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+ return ERR_PTR(n);
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}
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static int read_inode(struct inode *ino)
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@@ -234,7 +235,7 @@ static int read_inode(struct inode *ino)
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err = read_name(ino, name);
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kfree(name);
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out:
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- return(err);
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+ return err;
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}
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int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
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@@ -254,14 +255,15 @@ int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
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&sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files,
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&f_ffree, &sf->f_fsid, sizeof(sf->f_fsid),
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&sf->f_namelen, sf->f_spare);
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- if(err) return(err);
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+ if(err)
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+ return err;
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sf->f_blocks = f_blocks;
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sf->f_bfree = f_bfree;
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sf->f_bavail = f_bavail;
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sf->f_files = f_files;
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sf->f_ffree = f_ffree;
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sf->f_type = HOSTFS_SUPER_MAGIC;
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- return(0);
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+ return 0;
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}
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static struct inode *hostfs_alloc_inode(struct super_block *sb)
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@@ -270,13 +272,13 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb)
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hi = kmalloc(sizeof(*hi), GFP_KERNEL);
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if(hi == NULL)
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- return(NULL);
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+ return NULL;
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*hi = ((struct hostfs_inode_info) { .host_filename = NULL,
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.fd = -1,
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.mode = 0 });
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inode_init_once(&hi->vfs_inode);
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- return(&hi->vfs_inode);
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+ return &hi->vfs_inode;
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}
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static void hostfs_delete_inode(struct inode *inode)
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@@ -325,10 +327,12 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
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int error, len;
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name = dentry_name(file->f_path.dentry, 0);
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- if(name == NULL) return(-ENOMEM);
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+ if(name == NULL)
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+ return -ENOMEM;
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dir = open_dir(name, &error);
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kfree(name);
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- if(dir == NULL) return(-error);
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+ if(dir == NULL)
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+ return -error;
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next = file->f_pos;
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while((name = read_dir(dir, &next, &ino, &len)) != NULL){
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error = (*filldir)(ent, name, len, file->f_pos,
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@@ -337,7 +341,7 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
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file->f_pos = next;
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}
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close_dir(dir);
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- return(0);
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+ return 0;
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}
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int hostfs_file_open(struct inode *ino, struct file *file)
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@@ -347,7 +351,7 @@ int hostfs_file_open(struct inode *ino, struct file *file)
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mode = file->f_mode & (FMODE_READ | FMODE_WRITE);
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if((mode & HOSTFS_I(ino)->mode) == mode)
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- return(0);
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+ return 0;
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/* The file may already have been opened, but with the wrong access,
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* so this resets things and reopens the file with the new access.
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@@ -367,14 +371,15 @@ int hostfs_file_open(struct inode *ino, struct file *file)
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name = dentry_name(file->f_path.dentry, 0);
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if(name == NULL)
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- return(-ENOMEM);
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+ return -ENOMEM;
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fd = open_file(name, r, w, append);
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kfree(name);
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- if(fd < 0) return(fd);
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+ if(fd < 0)
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+ return fd;
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FILE_HOSTFS_I(file)->fd = fd;
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- return(0);
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+ return 0;
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}
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int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
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@@ -458,7 +463,7 @@ int hostfs_readpage(struct file *file, struct page *page)
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out:
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kunmap(page);
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unlock_page(page);
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- return(err);
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+ return err;
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}
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int hostfs_prepare_write(struct file *file, struct page *page,
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@@ -485,7 +490,7 @@ int hostfs_prepare_write(struct file *file, struct page *page,
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err = 0;
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out:
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kunmap(page);
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- return(err);
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+ return err;
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}
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int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
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@@ -511,7 +516,7 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
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inode->i_size = start;
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kunmap(page);
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- return(err);
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+ return err;
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}
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static const struct address_space_operations hostfs_aops = {
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@@ -569,7 +574,7 @@ static int init_inode(struct inode *inode, struct dentry *dentry)
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break;
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}
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out:
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- return(err);
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+ return err;
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}
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int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
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@@ -607,16 +612,16 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
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HOSTFS_I(inode)->fd = fd;
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HOSTFS_I(inode)->mode = FMODE_READ | FMODE_WRITE;
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d_instantiate(dentry, inode);
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- return(0);
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+ return 0;
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out_put:
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iput(inode);
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out:
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- return(error);
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+ return error;
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}
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struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
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- struct nameidata *nd)
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+ struct nameidata *nd)
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{
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struct inode *inode;
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char *name;
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@@ -647,44 +652,45 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
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d_add(dentry, inode);
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dentry->d_op = &hostfs_dentry_ops;
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- return(NULL);
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+ return NULL;
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out_put:
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iput(inode);
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out:
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- return(ERR_PTR(err));
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+ return ERR_PTR(err);
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}
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static char *inode_dentry_name(struct inode *ino, struct dentry *dentry)
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{
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- char *file;
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+ char *file;
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int len;
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file = inode_name(ino, dentry->d_name.len + 1);
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- if(file == NULL) return(NULL);
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- strcat(file, "/");
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+ if(file == NULL)
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+ return NULL;
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+ strcat(file, "/");
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len = strlen(file);
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- strncat(file, dentry->d_name.name, dentry->d_name.len);
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+ strncat(file, dentry->d_name.name, dentry->d_name.len);
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file[len + dentry->d_name.len] = '\0';
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- return(file);
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+ return file;
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}
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int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from)
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{
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- char *from_name, *to_name;
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- int err;
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+ char *from_name, *to_name;
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+ int err;
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- if((from_name = inode_dentry_name(ino, from)) == NULL)
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- return(-ENOMEM);
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- to_name = dentry_name(to, 0);
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+ if((from_name = inode_dentry_name(ino, from)) == NULL)
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+ return -ENOMEM;
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+ to_name = dentry_name(to, 0);
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if(to_name == NULL){
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kfree(from_name);
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- return(-ENOMEM);
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+ return -ENOMEM;
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}
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- err = link_file(to_name, from_name);
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- kfree(from_name);
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- kfree(to_name);
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- return(err);
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+ err = link_file(to_name, from_name);
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+ kfree(from_name);
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+ kfree(to_name);
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+ return err;
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}
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int hostfs_unlink(struct inode *ino, struct dentry *dentry)
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@@ -692,13 +698,14 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry)
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char *file;
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int err;
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- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
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+ if((file = inode_dentry_name(ino, dentry)) == NULL)
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+ return -ENOMEM;
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if(append)
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- return(-EPERM);
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+ return -EPERM;
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err = unlink_file(file);
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kfree(file);
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- return(err);
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+ return err;
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}
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int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
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@@ -706,10 +713,11 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
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char *file;
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int err;
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- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
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+ if((file = inode_dentry_name(ino, dentry)) == NULL)
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+ return -ENOMEM;
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err = make_symlink(file, to);
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kfree(file);
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- return(err);
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+ return err;
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}
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int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
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@@ -717,10 +725,11 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
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char *file;
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int err;
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- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
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+ if((file = inode_dentry_name(ino, dentry)) == NULL)
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+ return -ENOMEM;
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err = do_mkdir(file, mode);
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kfree(file);
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- return(err);
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+ return err;
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}
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int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
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@@ -728,10 +737,11 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
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char *file;
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int err;
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- if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM);
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+ if((file = inode_dentry_name(ino, dentry)) == NULL)
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+ return -ENOMEM;
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err = do_rmdir(file);
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kfree(file);
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- return(err);
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+ return err;
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}
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int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
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@@ -764,14 +774,14 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
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goto out_put;
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d_instantiate(dentry, inode);
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- return(0);
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+ return 0;
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out_free:
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kfree(name);
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out_put:
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iput(inode);
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out:
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- return(err);
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+ return err;
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}
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int hostfs_rename(struct inode *from_ino, struct dentry *from,
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@@ -781,15 +791,15 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
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int err;
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if((from_name = inode_dentry_name(from_ino, from)) == NULL)
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- return(-ENOMEM);
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+ return -ENOMEM;
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if((to_name = inode_dentry_name(to_ino, to)) == NULL){
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kfree(from_name);
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- return(-ENOMEM);
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+ return -ENOMEM;
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}
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err = rename_file(from_name, to_name);
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kfree(from_name);
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kfree(to_name);
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- return(err);
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+ return err;
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}
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int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
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@@ -801,7 +811,8 @@ int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
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if (desired & MAY_WRITE) w = 1;
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if (desired & MAY_EXEC) x = 1;
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name = inode_name(ino, 0);
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- if (name == NULL) return(-ENOMEM);
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+ if (name == NULL)
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+ return -ENOMEM;
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|
|
|
|
if (S_ISCHR(ino->i_mode) || S_ISBLK(ino->i_mode) ||
|
|
|
S_ISFIFO(ino->i_mode) || S_ISSOCK(ino->i_mode))
|
|
@@ -865,20 +876,21 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
|
|
|
attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET;
|
|
|
}
|
|
|
name = dentry_name(dentry, 0);
|
|
|
- if(name == NULL) return(-ENOMEM);
|
|
|
+ if(name == NULL)
|
|
|
+ return -ENOMEM;
|
|
|
err = set_attr(name, &attrs, fd);
|
|
|
kfree(name);
|
|
|
if(err)
|
|
|
- return(err);
|
|
|
+ return err;
|
|
|
|
|
|
- return(inode_setattr(dentry->d_inode, attr));
|
|
|
+ return inode_setattr(dentry->d_inode, attr);
|
|
|
}
|
|
|
|
|
|
int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
|
|
|
struct kstat *stat)
|
|
|
{
|
|
|
generic_fillattr(dentry->d_inode, stat);
|
|
|
- return(0);
|
|
|
+ return 0;
|
|
|
}
|
|
|
|
|
|
static const struct inode_operations hostfs_iops = {
|
|
@@ -917,7 +929,8 @@ int hostfs_link_readpage(struct file *file, struct page *page)
|
|
|
|
|
|
buffer = kmap(page);
|
|
|
name = inode_name(page->mapping->host, 0);
|
|
|
- if(name == NULL) return(-ENOMEM);
|
|
|
+ if(name == NULL)
|
|
|
+ return -ENOMEM;
|
|
|
err = do_readlink(name, buffer, PAGE_CACHE_SIZE);
|
|
|
kfree(name);
|
|
|
if(err == PAGE_CACHE_SIZE)
|
|
@@ -930,7 +943,7 @@ int hostfs_link_readpage(struct file *file, struct page *page)
|
|
|
}
|
|
|
kunmap(page);
|
|
|
unlock_page(page);
|
|
|
- return(err);
|
|
|
+ return err;
|
|
|
}
|
|
|
|
|
|
static const struct address_space_operations hostfs_link_aops = {
|
|
@@ -980,20 +993,20 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
|
|
|
|
|
|
err = read_inode(root_inode);
|
|
|
if(err){
|
|
|
- /* No iput in this case because the dput does that for us */
|
|
|
- dput(sb->s_root);
|
|
|
- sb->s_root = NULL;
|
|
|
+ /* No iput in this case because the dput does that for us */
|
|
|
+ dput(sb->s_root);
|
|
|
+ sb->s_root = NULL;
|
|
|
goto out;
|
|
|
- }
|
|
|
+ }
|
|
|
|
|
|
- return(0);
|
|
|
+ return 0;
|
|
|
|
|
|
- out_put:
|
|
|
- iput(root_inode);
|
|
|
- out_free:
|
|
|
+out_put:
|
|
|
+ iput(root_inode);
|
|
|
+out_free:
|
|
|
kfree(host_root_path);
|
|
|
- out:
|
|
|
- return(err);
|
|
|
+out:
|
|
|
+ return err;
|
|
|
}
|
|
|
|
|
|
static int hostfs_read_sb(struct file_system_type *type,
|
|
@@ -1013,7 +1026,7 @@ static struct file_system_type hostfs_type = {
|
|
|
|
|
|
static int __init init_hostfs(void)
|
|
|
{
|
|
|
- return(register_filesystem(&hostfs_type));
|
|
|
+ return register_filesystem(&hostfs_type);
|
|
|
}
|
|
|
|
|
|
static void __exit exit_hostfs(void)
|
|
@@ -1024,14 +1037,3 @@ static void __exit exit_hostfs(void)
|
|
|
module_init(init_hostfs)
|
|
|
module_exit(exit_hostfs)
|
|
|
MODULE_LICENSE("GPL");
|
|
|
-
|
|
|
-/*
|
|
|
- * Overrides for Emacs so that we follow Linus's tabbing style.
|
|
|
- * Emacs will notice this stuff at the end of the file and automatically
|
|
|
- * adjust the settings for this buffer only. This must remain at the end
|
|
|
- * of the file.
|
|
|
- * ---------------------------------------------------------------------------
|
|
|
- * Local variables:
|
|
|
- * c-file-style: "linux"
|
|
|
- * End:
|
|
|
- */
|