diff options
Diffstat (limited to 'kernel/include/linux/fs_struct.h')
| -rw-r--r-- | kernel/include/linux/fs_struct.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/include/linux/fs_struct.h b/kernel/include/linux/fs_struct.h new file mode 100644 index 000000000..0efc3e628 --- /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 */ |