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| author | Peter Elliott <pelliott@ualberta.ca> | 2020-07-10 22:19:08 -0600 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2020-07-11 11:33:33 +0200 |
| commit | 7a27fa3df840d71a87a3b1f6904fdc1030f5cba9 (patch) | |
| tree | 12494e072e91eaa731efb952236677afc649ae1b | |
| parent | f4ddca0a73fb2d911a7c068cc38524806ff8d748 (diff) | |
| download | serenity-7a27fa3df840d71a87a3b1f6904fdc1030f5cba9.zip | |
LibC: Implement tcflush(3)
| -rw-r--r-- | Kernel/TTY/TTY.cpp | 8 | ||||
| -rw-r--r-- | Libraries/LibC/sys/ioctl_numbers.h | 2 | ||||
| -rw-r--r-- | Libraries/LibC/termios.cpp | 4 |
3 files changed, 11 insertions, 3 deletions
diff --git a/Kernel/TTY/TTY.cpp b/Kernel/TTY/TTY.cpp index a68a0cbeb6..2f1fde1675 100644 --- a/Kernel/TTY/TTY.cpp +++ b/Kernel/TTY/TTY.cpp @@ -329,6 +329,14 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg) if (request == TCSETSF) flush_input(); return 0; + case TCFLSH: + // Serenity's TTY implementation does not use an output buffer, so ignore TCOFLUSH. + if (arg == TCIFLUSH || arg == TCIOFLUSH) { + flush_input(); + } else if (arg != TCOFLUSH) { + return -EINVAL; + } + return 0; case TIOCGWINSZ: ws = reinterpret_cast<winsize*>(arg); if (!current_process.validate_write(ws, sizeof(winsize))) diff --git a/Libraries/LibC/sys/ioctl_numbers.h b/Libraries/LibC/sys/ioctl_numbers.h index 8b9491a207..2492349060 100644 --- a/Libraries/LibC/sys/ioctl_numbers.h +++ b/Libraries/LibC/sys/ioctl_numbers.h @@ -52,6 +52,7 @@ enum IOCtlNumber { TCSETS, TCSETSW, TCSETSF, + TCFLSH, TIOCGWINSZ, TIOCSCTTY, TIOCNOTTY, @@ -75,6 +76,7 @@ enum IOCtlNumber { #define TCSETS TCSETS #define TCSETSW TCSETSW #define TCSETSF TCSETSF +#define TCFLSH TCFLSH #define TIOCGWINSZ TIOCGWINSZ #define TIOCSCTTY TIOCSCTTY #define TIOCNOTTY TIOCNOTTY diff --git a/Libraries/LibC/termios.cpp b/Libraries/LibC/termios.cpp index 575d8824ed..e1cf4d15ad 100644 --- a/Libraries/LibC/termios.cpp +++ b/Libraries/LibC/termios.cpp @@ -60,9 +60,7 @@ int tcflow(int fd, int action) int tcflush(int fd, int queue_selector) { - (void)fd; - (void)queue_selector; - ASSERT_NOT_REACHED(); + return ioctl(fd, TCFLSH, queue_selector); } speed_t cfgetispeed(const struct termios* tp) |