* Dmitry V. Levin <ldv@> [080708 03:32]:
> Хотя в таком простом варианте есть race.
В моём варианте кажется тоже есть race...

As well as being removed by an explicit F_UNLCK, record locks are
automatically released when the process terminates or if it
closes any file descriptor referring to a file on which locks are
held. This is bad: it means that a process can lose the locks on
a file like /etc/passwd or /etc/mtab when for some reason a
library function decides to open, read and close it.

Или к другим процессам, которые открывают файл, это не относится?

-- 
Regards,
Sir Raorn.