Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / fs_struct.h

diff --git a/kernel/include/linux/fs_struct.h b/kernel/include/linux/fs_struct.h
new file mode 100644 (file)
index 0000000..0efc3e6
--- /dev/null
+++ b/kernel/include/linux/fs_struct.h
@@ -0,0 +1,44 @@
+#ifndef _LINUX_FS_STRUCT_H
+#define _LINUX_FS_STRUCT_H
+
+#include <linux/path.h>
+#include <linux/spinlock.h>
+#include <linux/seqlock.h>
+
+struct fs_struct {
+       int users;
+       spinlock_t lock;
+       seqcount_t seq;
+       int umask;
+       int in_exec;
+       struct path root, pwd;
+};
+
+extern struct kmem_cache *fs_cachep;
+
+extern void exit_fs(struct task_struct *);
+extern void set_fs_root(struct fs_struct *, const struct path *);
+extern void set_fs_pwd(struct fs_struct *, const struct path *);
+extern struct fs_struct *copy_fs_struct(struct fs_struct *);
+extern void free_fs_struct(struct fs_struct *);
+extern int unshare_fs_struct(void);
+
+static inline void get_fs_root(struct fs_struct *fs, struct path *root)
+{
+       spin_lock(&fs->lock);
+       *root = fs->root;
+       path_get(root);
+       spin_unlock(&fs->lock);
+}
+
+static inline void get_fs_pwd(struct fs_struct *fs, struct path *pwd)
+{
+       spin_lock(&fs->lock);
+       *pwd = fs->pwd;
+       path_get(pwd);
+       spin_unlock(&fs->lock);
+}
+
+extern bool current_chrooted(void);
+
+#endif /* _LINUX_FS_STRUCT_H */