Commit f1adc05e authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds

uml: hostfs style fixes

hostfs needed some style goodness.
Signed-off-by: default avatarJeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5822b7fa
...@@ -87,14 +87,3 @@ extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, ...@@ -87,14 +87,3 @@ extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
long *spare_out); long *spare_out);
#endif #endif
/*
* 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:
*/
/* /*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL * Licensed under the GPL
* *
* Ported the filesystem routines to 2.5. * Ported the filesystem routines to 2.5.
...@@ -31,14 +31,14 @@ struct hostfs_inode_info { ...@@ -31,14 +31,14 @@ struct hostfs_inode_info {
static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode) static inline struct hostfs_inode_info *HOSTFS_I(struct inode *inode)
{ {
return(list_entry(inode, struct hostfs_inode_info, vfs_inode)); return list_entry(inode, struct hostfs_inode_info, vfs_inode);
} }
#define FILE_HOSTFS_I(file) HOSTFS_I((file)->f_path.dentry->d_inode) #define FILE_HOSTFS_I(file) HOSTFS_I((file)->f_path.dentry->d_inode)
int hostfs_d_delete(struct dentry *dentry) int hostfs_d_delete(struct dentry *dentry)
{ {
return(1); return 1;
} }
struct dentry_operations hostfs_dentry_ops = { struct dentry_operations hostfs_dentry_ops = {
...@@ -79,7 +79,7 @@ static int __init hostfs_args(char *options, int *add) ...@@ -79,7 +79,7 @@ static int __init hostfs_args(char *options, int *add)
} }
options = ptr; options = ptr;
} }
return(0); return 0;
} }
__uml_setup("hostfs=", hostfs_args, __uml_setup("hostfs=", hostfs_args,
...@@ -110,7 +110,8 @@ static char *dentry_name(struct dentry *dentry, int extra) ...@@ -110,7 +110,8 @@ static char *dentry_name(struct dentry *dentry, int extra)
root = HOSTFS_I(parent->d_inode)->host_filename; root = HOSTFS_I(parent->d_inode)->host_filename;
len += strlen(root); len += strlen(root);
name = kmalloc(len + extra + 1, GFP_KERNEL); name = kmalloc(len + extra + 1, GFP_KERNEL);
if(name == NULL) return(NULL); if(name == NULL)
return NULL;
name[len] = '\0'; name[len] = '\0';
parent = dentry; parent = dentry;
...@@ -122,7 +123,7 @@ static char *dentry_name(struct dentry *dentry, int extra) ...@@ -122,7 +123,7 @@ static char *dentry_name(struct dentry *dentry, int extra)
parent = parent->d_parent; parent = parent->d_parent;
} }
strncpy(name, root, strlen(root)); strncpy(name, root, strlen(root));
return(name); return name;
} }
static char *inode_name(struct inode *ino, int extra) static char *inode_name(struct inode *ino, int extra)
...@@ -130,7 +131,7 @@ static char *inode_name(struct inode *ino, int extra) ...@@ -130,7 +131,7 @@ static char *inode_name(struct inode *ino, int extra)
struct dentry *dentry; struct dentry *dentry;
dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias); dentry = list_entry(ino->i_dentry.next, struct dentry, d_alias);
return(dentry_name(dentry, extra)); return dentry_name(dentry, extra);
} }
static int read_name(struct inode *ino, char *name) static int read_name(struct inode *ino, char *name)
...@@ -149,14 +150,14 @@ static int read_name(struct inode *ino, char *name) ...@@ -149,14 +150,14 @@ static int read_name(struct inode *ino, char *name)
&ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime, &ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime,
&ino->i_ctime, &i_blksize, &i_blocks, -1); &ino->i_ctime, &i_blksize, &i_blocks, -1);
if(err) if(err)
return(err); return err;
ino->i_ino = i_ino; ino->i_ino = i_ino;
ino->i_mode = i_mode; ino->i_mode = i_mode;
ino->i_nlink = i_nlink; ino->i_nlink = i_nlink;
ino->i_size = i_size; ino->i_size = i_size;
ino->i_blocks = i_blocks; ino->i_blocks = i_blocks;
return(0); return 0;
} }
static char *follow_link(char *link) static char *follow_link(char *link)
...@@ -181,11 +182,11 @@ static char *follow_link(char *link) ...@@ -181,11 +182,11 @@ static char *follow_link(char *link)
goto out_free; goto out_free;
if(*name == '/') if(*name == '/')
return(name); return name;
end = strrchr(link, '/'); end = strrchr(link, '/');
if(end == NULL) if(end == NULL)
return(name); return name;
*(end + 1) = '\0'; *(end + 1) = '\0';
len = strlen(link) + strlen(name) + 1; len = strlen(link) + strlen(name) + 1;
...@@ -199,12 +200,12 @@ static char *follow_link(char *link) ...@@ -199,12 +200,12 @@ static char *follow_link(char *link)
sprintf(resolved, "%s%s", link, name); sprintf(resolved, "%s%s", link, name);
kfree(name); kfree(name);
kfree(link); kfree(link);
return(resolved); return resolved;
out_free: out_free:
kfree(name); kfree(name);
out: out:
return(ERR_PTR(n)); return ERR_PTR(n);
} }
static int read_inode(struct inode *ino) static int read_inode(struct inode *ino)
...@@ -234,7 +235,7 @@ static int read_inode(struct inode *ino) ...@@ -234,7 +235,7 @@ static int read_inode(struct inode *ino)
err = read_name(ino, name); err = read_name(ino, name);
kfree(name); kfree(name);
out: out:
return(err); return err;
} }
int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
...@@ -254,14 +255,15 @@ int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) ...@@ -254,14 +255,15 @@ int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf)
&sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files, &sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files,
&f_ffree, &sf->f_fsid, sizeof(sf->f_fsid), &f_ffree, &sf->f_fsid, sizeof(sf->f_fsid),
&sf->f_namelen, sf->f_spare); &sf->f_namelen, sf->f_spare);
if(err) return(err); if(err)
return err;
sf->f_blocks = f_blocks; sf->f_blocks = f_blocks;
sf->f_bfree = f_bfree; sf->f_bfree = f_bfree;
sf->f_bavail = f_bavail; sf->f_bavail = f_bavail;
sf->f_files = f_files; sf->f_files = f_files;
sf->f_ffree = f_ffree; sf->f_ffree = f_ffree;
sf->f_type = HOSTFS_SUPER_MAGIC; sf->f_type = HOSTFS_SUPER_MAGIC;
return(0); return 0;
} }
static struct inode *hostfs_alloc_inode(struct super_block *sb) static struct inode *hostfs_alloc_inode(struct super_block *sb)
...@@ -270,13 +272,13 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) ...@@ -270,13 +272,13 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb)
hi = kmalloc(sizeof(*hi), GFP_KERNEL); hi = kmalloc(sizeof(*hi), GFP_KERNEL);
if(hi == NULL) if(hi == NULL)
return(NULL); return NULL;
*hi = ((struct hostfs_inode_info) { .host_filename = NULL, *hi = ((struct hostfs_inode_info) { .host_filename = NULL,
.fd = -1, .fd = -1,
.mode = 0 }); .mode = 0 });
inode_init_once(&hi->vfs_inode); inode_init_once(&hi->vfs_inode);
return(&hi->vfs_inode); return &hi->vfs_inode;
} }
static void hostfs_delete_inode(struct inode *inode) static void hostfs_delete_inode(struct inode *inode)
...@@ -325,10 +327,12 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) ...@@ -325,10 +327,12 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
int error, len; int error, len;
name = dentry_name(file->f_path.dentry, 0); name = dentry_name(file->f_path.dentry, 0);
if(name == NULL) return(-ENOMEM); if(name == NULL)
return -ENOMEM;
dir = open_dir(name, &error); dir = open_dir(name, &error);
kfree(name); kfree(name);
if(dir == NULL) return(-error); if(dir == NULL)
return -error;
next = file->f_pos; next = file->f_pos;
while((name = read_dir(dir, &next, &ino, &len)) != NULL){ while((name = read_dir(dir, &next, &ino, &len)) != NULL){
error = (*filldir)(ent, name, len, file->f_pos, error = (*filldir)(ent, name, len, file->f_pos,
...@@ -337,7 +341,7 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) ...@@ -337,7 +341,7 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
file->f_pos = next; file->f_pos = next;
} }
close_dir(dir); close_dir(dir);
return(0); return 0;
} }
int hostfs_file_open(struct inode *ino, struct file *file) int hostfs_file_open(struct inode *ino, struct file *file)
...@@ -347,7 +351,7 @@ int hostfs_file_open(struct inode *ino, struct file *file) ...@@ -347,7 +351,7 @@ int hostfs_file_open(struct inode *ino, struct file *file)
mode = file->f_mode & (FMODE_READ | FMODE_WRITE); mode = file->f_mode & (FMODE_READ | FMODE_WRITE);
if((mode & HOSTFS_I(ino)->mode) == mode) if((mode & HOSTFS_I(ino)->mode) == mode)
return(0); return 0;
/* The file may already have been opened, but with the wrong access, /* The file may already have been opened, but with the wrong access,
* so this resets things and reopens the file with the new access. * so this resets things and reopens the file with the new access.
...@@ -367,14 +371,15 @@ int hostfs_file_open(struct inode *ino, struct file *file) ...@@ -367,14 +371,15 @@ int hostfs_file_open(struct inode *ino, struct file *file)
name = dentry_name(file->f_path.dentry, 0); name = dentry_name(file->f_path.dentry, 0);
if(name == NULL) if(name == NULL)
return(-ENOMEM); return -ENOMEM;
fd = open_file(name, r, w, append); fd = open_file(name, r, w, append);
kfree(name); kfree(name);
if(fd < 0) return(fd); if(fd < 0)
return fd;
FILE_HOSTFS_I(file)->fd = fd; FILE_HOSTFS_I(file)->fd = fd;
return(0); return 0;
} }
int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync) int hostfs_fsync(struct file *file, struct dentry *dentry, int datasync)
...@@ -458,7 +463,7 @@ int hostfs_readpage(struct file *file, struct page *page) ...@@ -458,7 +463,7 @@ int hostfs_readpage(struct file *file, struct page *page)
out: out:
kunmap(page); kunmap(page);
unlock_page(page); unlock_page(page);
return(err); return err;
} }
int hostfs_prepare_write(struct file *file, struct page *page, int hostfs_prepare_write(struct file *file, struct page *page,
...@@ -485,7 +490,7 @@ int hostfs_prepare_write(struct file *file, struct page *page, ...@@ -485,7 +490,7 @@ int hostfs_prepare_write(struct file *file, struct page *page,
err = 0; err = 0;
out: out:
kunmap(page); kunmap(page);
return(err); return err;
} }
int hostfs_commit_write(struct file *file, struct page *page, unsigned from, int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
...@@ -511,7 +516,7 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from, ...@@ -511,7 +516,7 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
inode->i_size = start; inode->i_size = start;
kunmap(page); kunmap(page);
return(err); return err;
} }
static const struct address_space_operations hostfs_aops = { static const struct address_space_operations hostfs_aops = {
...@@ -569,7 +574,7 @@ static int init_inode(struct inode *inode, struct dentry *dentry) ...@@ -569,7 +574,7 @@ static int init_inode(struct inode *inode, struct dentry *dentry)
break; break;
} }
out: out:
return(err); return err;
} }
int hostfs_create(struct inode *dir, struct dentry *dentry, int mode, int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
...@@ -607,16 +612,16 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode, ...@@ -607,16 +612,16 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode,
HOSTFS_I(inode)->fd = fd; HOSTFS_I(inode)->fd = fd;
HOSTFS_I(inode)->mode = FMODE_READ | FMODE_WRITE; HOSTFS_I(inode)->mode = FMODE_READ | FMODE_WRITE;
d_instantiate(dentry, inode); d_instantiate(dentry, inode);
return(0); return 0;
out_put: out_put:
iput(inode); iput(inode);
out: out:
return(error); return error;
} }
struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
struct nameidata *nd) struct nameidata *nd)
{ {
struct inode *inode; struct inode *inode;
char *name; char *name;
...@@ -647,44 +652,45 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, ...@@ -647,44 +652,45 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry,
d_add(dentry, inode); d_add(dentry, inode);
dentry->d_op = &hostfs_dentry_ops; dentry->d_op = &hostfs_dentry_ops;
return(NULL); return NULL;
out_put: out_put:
iput(inode); iput(inode);
out: out:
return(ERR_PTR(err)); return ERR_PTR(err);
} }
static char *inode_dentry_name(struct inode *ino, struct dentry *dentry) static char *inode_dentry_name(struct inode *ino, struct dentry *dentry)
{ {
char *file; char *file;
int len; int len;
file = inode_name(ino, dentry->d_name.len + 1); file = inode_name(ino, dentry->d_name.len + 1);
if(file == NULL) return(NULL); if(file == NULL)
strcat(file, "/"); return NULL;
strcat(file, "/");
len = strlen(file); len = strlen(file);
strncat(file, dentry->d_name.name, dentry->d_name.len); strncat(file, dentry->d_name.name, dentry->d_name.len);
file[len + dentry->d_name.len] = '\0'; file[len + dentry->d_name.len] = '\0';
return(file); return file;
} }
int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from) int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from)
{ {
char *from_name, *to_name; char *from_name, *to_name;
int err; int err;
if((from_name = inode_dentry_name(ino, from)) == NULL) if((from_name = inode_dentry_name(ino, from)) == NULL)
return(-ENOMEM); return -ENOMEM;
to_name = dentry_name(to, 0); to_name = dentry_name(to, 0);
if(to_name == NULL){ if(to_name == NULL){
kfree(from_name); kfree(from_name);
return(-ENOMEM); return -ENOMEM;
} }
err = link_file(to_name, from_name); err = link_file(to_name, from_name);
kfree(from_name); kfree(from_name);
kfree(to_name); kfree(to_name);
return(err); return err;
} }
int hostfs_unlink(struct inode *ino, struct dentry *dentry) int hostfs_unlink(struct inode *ino, struct dentry *dentry)
...@@ -692,13 +698,14 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry) ...@@ -692,13 +698,14 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry)
char *file; char *file;
int err; int err;
if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); if((file = inode_dentry_name(ino, dentry)) == NULL)
return -ENOMEM;
if(append) if(append)
return(-EPERM); return -EPERM;
err = unlink_file(file); err = unlink_file(file);
kfree(file); kfree(file);
return(err); return err;
} }
int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
...@@ -706,10 +713,11 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) ...@@ -706,10 +713,11 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to)
char *file; char *file;
int err; int err;
if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); if((file = inode_dentry_name(ino, dentry)) == NULL)
return -ENOMEM;
err = make_symlink(file, to); err = make_symlink(file, to);
kfree(file); kfree(file);
return(err); return err;
} }
int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode) int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
...@@ -717,10 +725,11 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode) ...@@ -717,10 +725,11 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode)
char *file; char *file;
int err; int err;
if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); if((file = inode_dentry_name(ino, dentry)) == NULL)
return -ENOMEM;
err = do_mkdir(file, mode); err = do_mkdir(file, mode);
kfree(file); kfree(file);
return(err); return err;
} }
int hostfs_rmdir(struct inode *ino, struct dentry *dentry) int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
...@@ -728,10 +737,11 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry) ...@@ -728,10 +737,11 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry)
char *file; char *file;
int err; int err;
if((file = inode_dentry_name(ino, dentry)) == NULL) return(-ENOMEM); if((file = inode_dentry_name(ino, dentry)) == NULL)
return -ENOMEM;
err = do_rmdir(file); err = do_rmdir(file);
kfree(file); kfree(file);
return(err); return err;
} }
int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
...@@ -764,14 +774,14 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) ...@@ -764,14 +774,14 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
goto out_put; goto out_put;
d_instantiate(dentry, inode); d_instantiate(dentry, inode);
return(0); return 0;
out_free: out_free:
kfree(name); kfree(name);
out_put: out_put:
iput(inode); iput(inode);
out: out:
return(err); return err;
} }
int hostfs_rename(struct inode *from_ino, struct dentry *from, int hostfs_rename(struct inode *from_ino, struct dentry *from,
...@@ -781,15 +791,15 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from, ...@@ -781,15 +791,15 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
int err; int err;
if((from_name = inode_dentry_name(from_ino, from)) == NULL) if((from_name = inode_dentry_name(from_ino, from)) == NULL)
return(-ENOMEM); return -ENOMEM;
if((to_name = inode_dentry_name(to_ino, to)) == NULL){ if((to_name = inode_dentry_name(to_ino, to)) == NULL){
kfree(from_name); kfree(from_name);
return(-ENOMEM); return -ENOMEM;
} }
err = rename_file(from_name, to_name); err = rename_file(from_name, to_name);
kfree(from_name); kfree(from_name);
kfree(to_name); kfree(to_name);
return(err); return err;
} }
int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd) int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
...@@ -801,7 +811,8 @@ int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd) ...@@ -801,7 +811,8 @@ int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
if (desired & MAY_WRITE) w = 1; if (desired & MAY_WRITE) w = 1;
if (desired & MAY_EXEC) x = 1; if (desired & MAY_EXEC) x = 1;
name = inode_name(ino, 0); name = inode_name(ino, 0);
if (name == NULL) return(-ENOMEM); if (name == NULL)
return -ENOMEM;
if (S_ISCHR(ino->i_mode) || S_ISBLK(ino->i_mode) || if (S_ISCHR(ino->i_mode) || S_ISBLK(ino->i_mode) ||
S_ISFIFO(ino->i_mode) || S_ISSOCK(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) ...@@ -865,20 +876,21 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)
attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET; attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET;
} }
name = dentry_name(dentry, 0); name = dentry_name(dentry, 0);
if(name == NULL) return(-ENOMEM); if(name == NULL)
return -ENOMEM;
err = set_attr(name, &attrs, fd); err = set_attr(name, &attrs, fd);
kfree(name); kfree(name);
if(err) 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, int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat) struct kstat *stat)
{ {
generic_fillattr(dentry->d_inode, stat); generic_fillattr(dentry->d_inode, stat);
return(0); return 0;
} }
static const struct inode_operations hostfs_iops = { static const struct inode_operations hostfs_iops = {
...@@ -917,7 +929,8 @@ int hostfs_link_readpage(struct file *file, struct page *page) ...@@ -917,7 +929,8 @@ int hostfs_link_readpage(struct file *file, struct page *page)
buffer = kmap(page); buffer = kmap(page);
name = inode_name(page->mapping->host, 0); 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); err = do_readlink(name, buffer, PAGE_CACHE_SIZE);
kfree(name); kfree(name);
if(err == PAGE_CACHE_SIZE) if(err == PAGE_CACHE_SIZE)
...@@ -930,7 +943,7 @@ int hostfs_link_readpage(struct file *file, struct page *page) ...@@ -930,7 +943,7 @@ int hostfs_link_readpage(struct file *file, struct page *page)
} }
kunmap(page); kunmap(page);
unlock_page(page); unlock_page(page);
return(err); return err;
} }
static const struct address_space_operations hostfs_link_aops = { 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) ...@@ -980,20 +993,20 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
err = read_inode(root_inode); err = read_inode(root_inode);
if(err){ if(err){
/* No iput in this case because the dput does that for us */ /* No iput in this case because the dput does that for us */
dput(sb->s_root); dput(sb->s_root);
sb->s_root = NULL; sb->s_root = NULL;
goto out; goto out;
} }
return(0); return 0;
out_put: out_put:
iput(root_inode); iput(root_inode);
out_free: out_free:
kfree(host_root_path); kfree(host_root_path);
out: out:
return(err); return err;
} }
static int hostfs_read_sb(struct file_system_type *type, static int hostfs_read_sb(struct file_system_type *type,
...@@ -1013,7 +1026,7 @@ static struct file_system_type hostfs_type = { ...@@ -1013,7 +1026,7 @@ static struct file_system_type hostfs_type = {
static int __init init_hostfs(void) static int __init init_hostfs(void)
{ {
return(register_filesystem(&hostfs_type)); return register_filesystem(&hostfs_type);
} }
static void __exit exit_hostfs(void) static void __exit exit_hostfs(void)
...@@ -1024,14 +1037,3 @@ static void __exit exit_hostfs(void) ...@@ -1024,14 +1037,3 @@ static void __exit exit_hostfs(void)
module_init(init_hostfs) module_init(init_hostfs)
module_exit(exit_hostfs) module_exit(exit_hostfs)
MODULE_LICENSE("GPL"); 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:
*/
/* /*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com) * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL * Licensed under the GPL
*/ */
...@@ -27,9 +27,9 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out, ...@@ -27,9 +27,9 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
if(fd >= 0) { if(fd >= 0) {
if (fstat64(fd, &buf) < 0) if (fstat64(fd, &buf) < 0)
return(-errno); return -errno;
} else if(lstat64(path, &buf) < 0) { } else if(lstat64(path, &buf) < 0) {
return(-errno); return -errno;
} }
if(inode_out != NULL) *inode_out = buf.st_ino; if(inode_out != NULL) *inode_out = buf.st_ino;
...@@ -52,7 +52,7 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out, ...@@ -52,7 +52,7 @@ int stat_file(const char *path, unsigned long long *inode_out, int *mode_out,
} }
if(blksize_out != NULL) *blksize_out = buf.st_blksize; if(blksize_out != NULL) *blksize_out = buf.st_blksize;
if(blocks_out != NULL) *blocks_out = buf.st_blocks; if(blocks_out != NULL) *blocks_out = buf.st_blocks;
return(0); return 0;
} }
int file_type(const char *path, int *maj, int *min) int file_type(const char *path, int *maj, int *min)
...@@ -60,7 +60,7 @@ int file_type(const char *path, int *maj, int *min) ...@@ -60,7 +60,7 @@ int file_type(const char *path, int *maj, int *min)
struct stat64 buf; struct stat64 buf;
if(lstat64(path, &buf) < 0) if(lstat64(path, &buf) < 0)
return(-errno); return -errno;
/*We cannot pass rdev as is because glibc and the kernel disagree /*We cannot pass rdev as is because glibc and the kernel disagree
*about its definition.*/ *about its definition.*/
if(maj != NULL) if(maj != NULL)
...@@ -68,13 +68,13 @@ int file_type(const char *path, int *maj, int *min) ...@@ -68,13 +68,13 @@ int file_type(const char *path, int *maj, int *min)
if(min != NULL) if(min != NULL)
*min = minor(buf.st_rdev); *min = minor(buf.st_rdev);
if(S_ISDIR(buf.st_mode)) return(OS_TYPE_DIR); if(S_ISDIR(buf.st_mode)) return OS_TYPE_DIR;
else if(S_ISLNK(buf.st_mode)) return(OS_TYPE_SYMLINK); else if(S_ISLNK(buf.st_mode)) return OS_TYPE_SYMLINK;
else if(S_ISCHR(buf.st_mode)) return(OS_TYPE_CHARDEV); else if(S_ISCHR(buf.st_mode)) return OS_TYPE_CHARDEV;
else if(S_ISBLK(buf.st_mode)) return(OS_TYPE_BLOCKDEV); else if(S_ISBLK(buf.st_mode)) return OS_TYPE_BLOCKDEV;
else if(S_ISFIFO(buf.st_mode))return(OS_TYPE_FIFO); else if(S_ISFIFO(buf.st_mode))return OS_TYPE_FIFO;
else if(S_ISSOCK(buf.st_mode))return(OS_TYPE_SOCK); else if(S_ISSOCK(buf.st_mode))return OS_TYPE_SOCK;
else return(OS_TYPE_FILE); else return OS_TYPE_FILE;
} }
int access_file(char *path, int r, int w, int x) int access_file(char *path, int r, int w, int x)
...@@ -84,8 +84,9 @@ int access_file(char *path, int r, int w, int x) ...@@ -84,8 +84,9 @@ int access_file(char *path, int r, int w, int x)
if(r) mode = R_OK; if(r) mode = R_OK;
if(w) mode |= W_OK; if(w) mode |= W_OK;
if(x) mode |= X_OK; if(x) mode |= X_OK;
if(access(path, mode) != 0) return(-errno); if(access(path, mode) != 0)
else return(0); return -errno;
else return 0;
} }
int open_file(char *path, int r, int w, int append) int open_file(char *path, int r, int w, int append)
...@@ -103,8 +104,9 @@ int open_file(char *path, int r, int w, int append) ...@@ -103,8 +104,9 @@ int open_file(char *path, int r, int w, int append)
if(append) if(append)
mode |= O_APPEND; mode |= O_APPEND;
fd = open64(path, mode); fd = open64(path, mode);
if(fd < 0) return(-errno); if(fd < 0)
else return(fd); return -errno;
else return fd;
} }
void *open_dir(char *path, int *err_out) void *open_dir(char *path, int *err_out)
...@@ -113,8 +115,9 @@ void *open_dir(char *path, int *err_out) ...@@ -113,8 +115,9 @@ void *open_dir(char *path, int *err_out)
dir = opendir(path); dir = opendir(path);
*err_out = errno; *err_out = errno;
if(dir == NULL) return(NULL); if(dir == NULL)
return(dir); return NULL;
return dir;
} }
char *read_dir(void *stream, unsigned long long *pos, char *read_dir(void *stream, unsigned long long *pos,
...@@ -125,11 +128,12 @@ char *read_dir(void *stream, unsigned long long *pos, ...@@ -125,11 +128,12 @@ char *read_dir(void *stream, unsigned long long *pos,
seekdir(dir, *pos); seekdir(dir, *pos);
ent = readdir(dir); ent = readdir(dir);
if(ent == NULL) return(NULL); if(ent == NULL)
return NULL;
*len_out = strlen(ent->d_name); *len_out = strlen(ent->d_name);
*ino_out = ent->d_ino; *ino_out = ent->d_ino;
*pos = telldir(dir); *pos = telldir(dir);
return(ent->d_name); return ent->d_name;
} }
int read_file(int fd, unsigned long long *offset, char *buf, int len) int read_file(int fd, unsigned long long *offset, char *buf, int len)
...@@ -137,9 +141,10 @@ int read_file(int fd, unsigned long long *offset, char *buf, int len) ...@@ -137,9 +141,10 @@ int read_file(int fd, unsigned long long *offset, char *buf, int len)
int n; int n;
n = pread64(fd, buf, len, *offset); n = pread64(fd, buf, len, *offset);
if(n < 0) return(-errno); if(n < 0)
return -errno;
*offset += n; *offset += n;
return(n); return n;
} }
int write_file(int fd, unsigned long long *offset, const char *buf, int len) int write_file(int fd, unsigned long long *offset, const char *buf, int len)
...@@ -147,9 +152,10 @@ int write_file(int fd, unsigned long long *offset, const char *buf, int len) ...@@ -147,9 +152,10 @@ int write_file(int fd, unsigned long long *offset, const char *buf, int len)
int n; int n;
n = pwrite64(fd, buf, len, *offset); n = pwrite64(fd, buf, len, *offset);
if(n < 0) return(-errno); if(n < 0)
return -errno;
*offset += n; *offset += n;
return(n); return n;
} }
int lseek_file(int fd, long long offset, int whence) int lseek_file(int fd, long long offset, int whence)
...@@ -158,8 +164,8 @@ int lseek_file(int fd, long long offset, int whence) ...@@ -158,8 +164,8 @@ int lseek_file(int fd, long long offset, int whence)
ret = lseek64(fd, offset, whence); ret = lseek64(fd, offset, whence);
if(ret < 0) if(ret < 0)
return(-errno); return -errno;
return(0); return 0;
} }
int fsync_file(int fd, int datasync) int fsync_file(int fd, int datasync)
...@@ -202,8 +208,8 @@ int file_create(char *name, int ur, int uw, int ux, int gr, ...@@ -202,8 +208,8 @@ int file_create(char *name, int ur, int uw, int ux, int gr,
mode |= ox ? S_IXOTH : 0; mode |= ox ? S_IXOTH : 0;
fd = open64(name, O_CREAT | O_RDWR, mode); fd = open64(name, O_CREAT | O_RDWR, mode);
if(fd < 0) if(fd < 0)
return(-errno); return -errno;
return(fd); return fd;
} }
int set_attr(const char *file, struct hostfs_iattr *attrs, int fd) int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
...@@ -217,31 +223,31 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd) ...@@ -217,31 +223,31 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
if (fchmod(fd, attrs->ia_mode) != 0) if (fchmod(fd, attrs->ia_mode) != 0)
return (-errno); return (-errno);
} else if (chmod(file, attrs->ia_mode) != 0) { } else if (chmod(file, attrs->ia_mode) != 0) {
return (-errno); return -errno;
} }
} }
if (attrs->ia_valid & HOSTFS_ATTR_UID) { if (attrs->ia_valid & HOSTFS_ATTR_UID) {
if (fd >= 0) { if (fd >= 0) {
if (fchown(fd, attrs->ia_uid, -1)) if (fchown(fd, attrs->ia_uid, -1))
return (-errno); return -errno;
} else if(chown(file, attrs->ia_uid, -1)) { } else if(chown(file, attrs->ia_uid, -1)) {
return (-errno); return -errno;
} }
} }
if (attrs->ia_valid & HOSTFS_ATTR_GID) { if (attrs->ia_valid & HOSTFS_ATTR_GID) {
if (fd >= 0) { if (fd >= 0) {
if (fchown(fd, -1, attrs->ia_gid)) if (fchown(fd, -1, attrs->ia_gid))
return (-errno); return -errno;
} else if (chown(file, -1, attrs->ia_gid)) { } else if (chown(file, -1, attrs->ia_gid)) {
return (-errno); return -errno;
} }
} }
if (attrs->ia_valid & HOSTFS_ATTR_SIZE) { if (attrs->ia_valid & HOSTFS_ATTR_SIZE) {
if (fd >= 0) { if (fd >= 0) {
if (ftruncate(fd, attrs->ia_size)) if (ftruncate(fd, attrs->ia_size))
return (-errno); return -errno;
} else if (truncate(file, attrs->ia_size)) { } else if (truncate(file, attrs->ia_size)) {
return (-errno); return -errno;
} }
} }
...@@ -271,9 +277,9 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd) ...@@ -271,9 +277,9 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
if (fd >= 0) { if (fd >= 0) {
if (futimes(fd, times) != 0) if (futimes(fd, times) != 0)
return (-errno); return -errno;
} else if (utimes(file, times) != 0) { } else if (utimes(file, times) != 0) {
return (-errno); return -errno;
} }
} }
...@@ -282,9 +288,10 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd) ...@@ -282,9 +288,10 @@ int set_attr(const char *file, struct hostfs_iattr *attrs, int fd)
err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL, err = stat_file(file, NULL, NULL, NULL, NULL, NULL, NULL,
&attrs->ia_atime, &attrs->ia_mtime, NULL, &attrs->ia_atime, &attrs->ia_mtime, NULL,
NULL, NULL, fd); NULL, NULL, fd);
if(err != 0) return(err); if(err != 0)
return err;
} }
return(0); return 0;
} }
int make_symlink(const char *from, const char *to) int make_symlink(const char *from, const char *to)
...@@ -292,8 +299,9 @@ int make_symlink(const char *from, const char *to) ...@@ -292,8 +299,9 @@ int make_symlink(const char *from, const char *to)
int err; int err;
err = symlink(to, from); err = symlink(to, from);
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int unlink_file(const char *file) int unlink_file(const char *file)
...@@ -301,8 +309,9 @@ int unlink_file(const char *file) ...@@ -301,8 +309,9 @@ int unlink_file(const char *file)
int err; int err;
err = unlink(file); err = unlink(file);
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int do_mkdir(const char *file, int mode) int do_mkdir(const char *file, int mode)
...@@ -310,8 +319,9 @@ int do_mkdir(const char *file, int mode) ...@@ -310,8 +319,9 @@ int do_mkdir(const char *file, int mode)
int err; int err;
err = mkdir(file, mode); err = mkdir(file, mode);
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int do_rmdir(const char *file) int do_rmdir(const char *file)
...@@ -319,8 +329,9 @@ int do_rmdir(const char *file) ...@@ -319,8 +329,9 @@ int do_rmdir(const char *file)
int err; int err;
err = rmdir(file); err = rmdir(file);
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor) int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
...@@ -328,8 +339,9 @@ int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor) ...@@ -328,8 +339,9 @@ int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor)
int err; int err;
err = mknod(file, mode, makedev(major, minor)); err = mknod(file, mode, makedev(major, minor));
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int link_file(const char *to, const char *from) int link_file(const char *to, const char *from)
...@@ -337,8 +349,9 @@ int link_file(const char *to, const char *from) ...@@ -337,8 +349,9 @@ int link_file(const char *to, const char *from)
int err; int err;
err = link(to, from); err = link(to, from);
if(err) return(-errno); if(err)
return(0); return -errno;
return 0;
} }
int do_readlink(char *file, char *buf, int size) int do_readlink(char *file, char *buf, int size)
...@@ -347,10 +360,10 @@ int do_readlink(char *file, char *buf, int size) ...@@ -347,10 +360,10 @@ int do_readlink(char *file, char *buf, int size)
n = readlink(file, buf, size); n = readlink(file, buf, size);
if(n < 0) if(n < 0)
return(-errno); return -errno;
if(n < size) if(n < size)
buf[n] = '\0'; buf[n] = '\0';
return(n); return n;
} }
int rename_file(char *from, char *to) int rename_file(char *from, char *to)
...@@ -358,8 +371,9 @@ int rename_file(char *from, char *to) ...@@ -358,8 +371,9 @@ int rename_file(char *from, char *to)
int err; int err;
err = rename(from, to); err = rename(from, to);
if(err < 0) return(-errno); if(err < 0)
return(0); return -errno;
return 0;
} }
int do_statfs(char *root, long *bsize_out, long long *blocks_out, int do_statfs(char *root, long *bsize_out, long long *blocks_out,
...@@ -372,7 +386,9 @@ int do_statfs(char *root, long *bsize_out, long long *blocks_out, ...@@ -372,7 +386,9 @@ int do_statfs(char *root, long *bsize_out, long long *blocks_out,
int err; int err;
err = statfs64(root, &buf); err = statfs64(root, &buf);
if(err < 0) return(-errno); if(err < 0)
return -errno;
*bsize_out = buf.f_bsize; *bsize_out = buf.f_bsize;
*blocks_out = buf.f_blocks; *blocks_out = buf.f_blocks;
*bfree_out = buf.f_bfree; *bfree_out = buf.f_bfree;
...@@ -388,16 +404,5 @@ int do_statfs(char *root, long *bsize_out, long long *blocks_out, ...@@ -388,16 +404,5 @@ int do_statfs(char *root, long *bsize_out, long long *blocks_out,
spare_out[2] = buf.f_spare[2]; spare_out[2] = buf.f_spare[2];
spare_out[3] = buf.f_spare[3]; spare_out[3] = buf.f_spare[3];
spare_out[4] = buf.f_spare[4]; spare_out[4] = buf.f_spare[4];
return(0); return 0;
} }
/*
* 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:
*/
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