Messages in this thread | | | Date | Fri, 08 Oct 1999 20:21:26 +0200 | From | Manfred Spraul <> | Subject | Re: how to write get_block? |
| |
Manfred Spraul wrote: > I'll check the POSIX standard, perhaps we can just reject mmap() or > file-locks in this situation. I couldn't find it in the POSIX standart, but at least some UNIXes don't allow it:
http://hoth.stsci.edu/man/man2/fcntl.html: (sun unix) > The fcntl() function will fail if: [...] > or the cmd argument is F_SETLK, F_SETLK64, F_SETLKW, or F_SETLKW64, > mandatory file/record locking is set, and the file is currently > being mapped to virtual memory using mmap(2).
http://cando.dwr.co.gov/cgi-bin/man2html/fcntl(2): IRIX 5.2 > [EAGAIN] cmd is F_SETLK or F_SETLKW , mandatory file locking bit is > set for the file, and the file is currently being mapped > to virtual memory via mmap [see mmap(2)].
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |