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authorAl Viro <viro@zeniv.linux.org.uk>2009-03-29 19:00:13 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-03-31 23:00:26 -0400
commit3e93cd671813e204c258f1e6c797959920cf7772 (patch)
treea1e0b2d2da7d296cc1c53be9cd6efa5b94b01b5c /fs/namespace.c
parentf8ef3ed2bebd2c4cb9ece92efa185d7aead8831a (diff)
downloadop-kernel-dev-3e93cd671813e204c258f1e6c797959920cf7772.zip
op-kernel-dev-3e93cd671813e204c258f1e6c797959920cf7772.tar.gz
Take fs_struct handling to new file (fs/fs_struct.c)
Pure code move; two new helper functions for nfsd and daemonize (unshare_fs_struct() and daemonize_fs_struct() resp.; for now - the same code as used to be in callers). unshare_fs_struct() exported (for nfsd, as copy_fs_struct()/exit_fs() used to be), copy_fs_struct() and exit_fs() don't need exports anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c68
1 files changed, 0 insertions, 68 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index f7ec283..1e56303 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2093,74 +2093,6 @@ out1:
}
/*
- * Replace the fs->{rootmnt,root} with {mnt,dentry}. Put the old values.
- * It can block. Requires the big lock held.
- */
-void set_fs_root(struct fs_struct *fs, struct path *path)
-{
- struct path old_root;
-
- write_lock(&fs->lock);
- old_root = fs->root;
- fs->root = *path;
- path_get(path);
- write_unlock(&fs->lock);
- if (old_root.dentry)
- path_put(&old_root);
-}
-
-/*
- * Replace the fs->{pwdmnt,pwd} with {mnt,dentry}. Put the old values.
- * It can block. Requires the big lock held.
- */
-void set_fs_pwd(struct fs_struct *fs, struct path *path)
-{
- struct path old_pwd;
-
- write_lock(&fs->lock);
- old_pwd = fs->pwd;
- fs->pwd = *path;
- path_get(path);
- write_unlock(&fs->lock);
-
- if (old_pwd.dentry)
- path_put(&old_pwd);
-}
-
-static void chroot_fs_refs(struct path *old_root, struct path *new_root)
-{
- struct task_struct *g, *p;
- struct fs_struct *fs;
- int count = 0;
-
- read_lock(&tasklist_lock);
- do_each_thread(g, p) {
- task_lock(p);
- fs = p->fs;
- if (fs) {
- write_lock(&fs->lock);
- if (fs->root.dentry == old_root->dentry
- && fs->root.mnt == old_root->mnt) {
- path_get(new_root);
- fs->root = *new_root;
- count++;
- }
- if (fs->pwd.dentry == old_root->dentry
- && fs->pwd.mnt == old_root->mnt) {
- path_get(new_root);
- fs->pwd = *new_root;
- count++;
- }
- write_unlock(&fs->lock);
- }
- task_unlock(p);
- } while_each_thread(g, p);
- read_unlock(&tasklist_lock);
- while (count--)
- path_put(old_root);
-}
-
-/*
* pivot_root Semantics:
* Moves the root file system of the current process to the directory put_old,
* makes new_root as the new root file system of the current process, and sets
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