The fanotify and the inotify API can be used to monitor changes of the file
system.
System call ftruncate modifies files. Hence it should trigger the corresponding
fanotify (FAN_MODIFY) and inotify (IN_MODIFY) events.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
fs/open.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/open.c b/fs/open.c
index d6fd3ac..e36f26e 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -189,6 +189,8 @@ static long do_sys_ftruncate(unsigned int fd, loff_t
length, int small)
error = security_path_truncate(&f.file->f_path);
if (!error)
error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME,
f.file);
+ if (!error)
+ fsnotify_modify(f.file);
sb_end_write(inode->i_sb);
out_putf:
fdput(f);
--
2.1.0
--
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