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1 #ifndef _LINUX_DNOTIFY_H |
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2 #define _LINUX_DNOTIFY_H |
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3 /* |
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4 * Directory notification for Linux |
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5 * |
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6 * Copyright (C) 2000,2002 Stephen Rothwell |
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7 */ |
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8 |
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9 #include <linux/fs.h> |
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10 |
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11 struct dnotify_struct { |
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12 struct dnotify_struct * dn_next; |
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13 unsigned long dn_mask; |
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14 int dn_fd; |
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15 struct file * dn_filp; |
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16 fl_owner_t dn_owner; |
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17 }; |
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18 |
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19 #ifdef __KERNEL__ |
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20 |
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21 |
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22 #ifdef CONFIG_DNOTIFY |
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23 |
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24 extern void __inode_dir_notify(struct inode *, unsigned long); |
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25 extern void dnotify_flush(struct file *, fl_owner_t); |
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26 extern int fcntl_dirnotify(int, struct file *, unsigned long); |
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27 extern void dnotify_parent(struct dentry *, unsigned long); |
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28 |
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29 static inline void inode_dir_notify(struct inode *inode, unsigned long event) |
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30 { |
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31 if (inode->i_dnotify_mask & (event)) |
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32 __inode_dir_notify(inode, event); |
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33 } |
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34 |
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35 #else |
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36 |
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37 static inline void __inode_dir_notify(struct inode *inode, unsigned long event) |
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38 { |
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39 } |
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40 |
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41 static inline void dnotify_flush(struct file *filp, fl_owner_t id) |
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42 { |
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43 } |
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44 |
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45 static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) |
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46 { |
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47 return -EINVAL; |
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48 } |
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49 |
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50 static inline void dnotify_parent(struct dentry *dentry, unsigned long event) |
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51 { |
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52 } |
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53 |
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54 static inline void inode_dir_notify(struct inode *inode, unsigned long event) |
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55 { |
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56 } |
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57 |
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58 #endif /* CONFIG_DNOTIFY */ |
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59 |
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60 #endif /* __KERNEL __ */ |
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61 |
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62 #endif /* _LINUX_DNOTIFY_H */ |