linux 结构体部分成员初始化

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JDSH0224 2022-09-19 14:04:03 ©著作权

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1. 结构体

struct file_system_type {
  const char *name;
  int fs_flags;
#define FS_REQUIRES_DEV   1 
#define FS_BINARY_MOUNTDATA 2
#define FS_HAS_SUBTYPE    4
#define FS_USERNS_MOUNT   8 /* Can be mounted by userns root */
#define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */
#define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */
  struct dentry *(*mount) (struct file_system_type *, int,
           const char *, void *);
  void (*kill_sb) (struct super_block *);
  struct module *owner;
  struct file_system_type * next;
  struct hlist_head fs_supers;

  struct lock_class_key s_lock_key;
  struct lock_class_key s_umount_key;
  struct lock_class_key s_vfs_rename_key;
  struct lock_class_key s_writers_key[SB_FREEZE_LEVELS];

  struct lock_class_key i_lock_key;
  struct lock_class_key i_mutex_key;
  struct lock_class_key i_mutex_dir_key;
};

2. 结构体部分成员初始化方法

static struct file_system_type proc_fs_type = {
  .name    = "proc",
  .mount    = proc_mount,
  .kill_sb  = proc_kill_sb,
  .fs_flags  = FS_USERNS_MOUNT,
};