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syscalls: Add 'tcgetattr' and 'tcsetattr' bindings.

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* guix/build/syscalls.scm (bits->symbols-body, define-bits)
(local-flags): New macros.
(TCSANOW, TCSADRAIN, TCSAFLUSH): New variables.
(<termios>): New record type.
(%termios): New C structure.
(tcgetattr, tcsetattr): New procedures.
* tests/syscalls.scm ("tcgetattr ENOTTY", "tcgetattr")
("tcsetattr"): New tests.
This commit is contained in:
Ludovic Courtès
2016-05-01 23:59:05 +02:00
parent 00cd41974e
commit ae4ff9f359
2 changed files with 156 additions and 0 deletions
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25
tests/syscalls.scm
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@@ -259,6 +259,31 @@
(#f #f)
(lo (interface-address lo)))))))
(test-equal "tcgetattr ENOTTY"
ENOTTY
(catch 'system-error
(lambda ()
(call-with-input-file "/dev/null"
(lambda (port)
(tcgetattr (fileno port)))))
(compose system-error-errno list)))
(test-skip (if (and (file-exists? "/proc/self/fd/0")
(string-prefix? "/dev/pts/" (readlink "/proc/self/fd/0")))
0
2))
(test-assert "tcgetattr"
(let ((termios (tcgetattr 0)))
(and (termios? termios)
(> (termios-input-speed termios) 0)
(> (termios-output-speed termios) 0))))
(test-assert "tcsetattr"
(let ((first (tcgetattr 0)))
(tcsetattr 0 TCSANOW first)
(equal? first (tcgetattr 0))))
(test-assert "terminal-window-size ENOTTY"
(call-with-input-file "/dev/null"
(lambda (port)