From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 15 Nov 2014 09:58:27 +0800 Subject: init android origin source code --- ANDROID_3.4.5/include/linux/fs_struct.h | 54 +++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 ANDROID_3.4.5/include/linux/fs_struct.h (limited to 'ANDROID_3.4.5/include/linux/fs_struct.h') diff --git a/ANDROID_3.4.5/include/linux/fs_struct.h b/ANDROID_3.4.5/include/linux/fs_struct.h new file mode 100644 index 00000000..003dc0fd --- /dev/null +++ b/ANDROID_3.4.5/include/linux/fs_struct.h @@ -0,0 +1,54 @@ +#ifndef _LINUX_FS_STRUCT_H +#define _LINUX_FS_STRUCT_H + +#include +#include +#include + +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 *, struct path *); +extern void set_fs_pwd(struct fs_struct *, struct path *); +extern struct fs_struct *copy_fs_struct(struct fs_struct *); +extern void free_fs_struct(struct fs_struct *); +extern void daemonize_fs_struct(void); +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); +} + +static inline void get_fs_root_and_pwd(struct fs_struct *fs, struct path *root, + struct path *pwd) +{ + spin_lock(&fs->lock); + *root = fs->root; + path_get(root); + *pwd = fs->pwd; + path_get(pwd); + spin_unlock(&fs->lock); +} + +#endif /* _LINUX_FS_STRUCT_H */ -- cgit