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pass a struct path to vfs_statfs

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We'll need the path to implement the flags field for statvfs support.
We do have it available in all callers except:

 - ecryptfs_statfs.  This one doesn't actually need vfs_statfs but just
   needs to do a caller to the lower filesystem statfs method.
 - sys_ustat.  Add a non-exported statfs_by_dentry helper for it which
   doesn't won't be able to fill out the flags field later on.

In addition rename the helpers for statfs vs fstatfs to do_*statfs instead
of the misleading vfs prefix.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-07-07 18:53:11 +02:00 • committed by Al Viro
commit ebabe9a900
11 changed files with 67 additions and 46 deletions
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10
fs/compat.c
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@ -266,7 +266,7 @@ asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_sta
error = user_path(pathname, &path);
if (!error) {
struct kstatfs tmp;
error = vfs_statfs(path.dentry, &tmp);
error = vfs_statfs(&path, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
path_put(&path);
@ -284,7 +284,7 @@ asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs(file->f_path.dentry, &tmp);
error = vfs_statfs(&file->f_path, &tmp);
if (!error)
error = put_compat_statfs(buf, &tmp);
fput(file);
@ -334,7 +334,7 @@ asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t s
error = user_path(pathname, &path);
if (!error) {
struct kstatfs tmp;
error = vfs_statfs(path.dentry, &tmp);
error = vfs_statfs(&path, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
path_put(&path);
@ -355,7 +355,7 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c
file = fget(fd);
if (!file)
goto out;
error = vfs_statfs(file->f_path.dentry, &tmp);
error = vfs_statfs(&file->f_path, &tmp);
if (!error)
error = put_compat_statfs64(buf, &tmp);
fput(file);
@ -378,7 +378,7 @@ asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u)
sb = user_get_super(new_decode_dev(dev));
if (!sb)
return -EINVAL;
err = vfs_statfs(sb->s_root, &sbuf);
err = statfs_by_dentry(sb->s_root, &sbuf);
drop_super(sb);
if (err)
return err;