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TTY: use libchardriver; clean up

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- writing to a PTY master side blocks if there is not already a
  blocked reader on the slave side, and select now reflects this;
- internally, TTY now uses a test based on "caller != NONE" rather
  than "grant != GRANT_INVALID" to identify whether a call is
  currently ongoing;
- "offset" fields have been removed as they equal the corresponding
  "cum" fields;
- improved variable typing and function naming here and there;
- various other small fixes.

Change-Id: I6b51452888942e864b4e034e8c8490576184a23e
This commit is contained in:
David van Moolenbroek
2014-03-01 09:04:52 +01:00
committed by sambuc
parent 701f2b4dd5
commit 3d697930dd
15 changed files with 997 additions and 1060 deletions
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include/sys/ioc_tty.h
-1
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@@ -22,7 +22,6 @@
#define TIOCSWINSZ _IOW('T', 17, struct winsize)
#define TIOCGPGRP _IOW('T', 18, int)
#define TIOCSPGRP _IOW('T', 19, int)
#define TIOCSFON_OLD _IOW('T', 20, u8_t [8192])
#define TIOCSFON _IOW_BIG(1, u8_t [8192])
/* Keyboard ioctls. */