Eric Lee / smarc-fsl-linux-kernel

11 Aug, 2010

1 commit

  • 26df6d134   tty: Add EXTPROC support for LINEMODE ... Browse Code »

    This patch is against the 2.6.34 source.

    Paraphrased from the 1989 BSD patch by David Borman @ cray.com:

    These are the changes needed for the kernel to support
    LINEMODE in the server.

    There is a new bit in the termios local flag word, EXTPROC.
    When this bit is set, several aspects of the terminal driver
    are disabled. Input line editing, character echo, and mapping
    of signals are all disabled. This allows the telnetd to turn
    off these functions when in linemode, but still keep track of
    what state the user wants the terminal to be in.

    New ioctl:
    TIOCSIG Generate a signal to processes in the
    current process group of the pty.

    There is a new mode for packet driver, the TIOCPKT_IOCTL bit.
    When packet mode is turned on in the pty, and the EXTPROC bit
    is set, then whenever the state of the pty is changed, the
    next read on the master side of the pty will have the TIOCPKT_IOCTL
    bit set. This allows the process on the server side of the pty
    to know when the state of the terminal has changed; it can then
    issue the appropriate ioctl to retrieve the new state.

    Since the original BSD patches accompanied the source code for telnet
    I've left that reference here, but obviously the feature is useful for
    any remote terminal protocol, including ssh.

    The corresponding feature has existed in the BSD tty driver since 1989.
    For historical reference, a good copy of the relevant files can be found
    here:

    http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741

    Signed-off-by: Howard Chu
    Cc: Alan Cox
    Signed-off-by: Greg Kroah-Hartman

    hyc@symas.com
     

12 Jun, 2009

1 commit

  • 6103ec56c   asm-generic: add generic ABI headers ... Browse Code »

    These header files are typically copied from an existing architecture
    into any new one, slightly modified and then remain untouched until
    the end of time in the name of ABI stability.

    To make it easier for future architectures, provide a sane generic
    version here. In cases where multiple architectures already use
    identical code, I used the most common version. In cases like
    stat.h that are more or less broken everywhere, I provide a
    version that is meant to be ideal for new architectures.

    Signed-off-by: Remis Lima Baima
    Signed-off-by: Arnd Bergmann

    Arnd Bergmann