diff options
Diffstat (limited to '3rdparty/libuv/src/unix/tty.c')
-rw-r--r-- | 3rdparty/libuv/src/unix/tty.c | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/3rdparty/libuv/src/unix/tty.c b/3rdparty/libuv/src/unix/tty.c deleted file mode 100644 index 32fa37eac96..00000000000 --- a/3rdparty/libuv/src/unix/tty.c +++ /dev/null @@ -1,311 +0,0 @@ -/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#include "uv.h" -#include "internal.h" -#include "spinlock.h" - -#include <stdlib.h> -#include <assert.h> -#include <unistd.h> -#include <termios.h> -#include <errno.h> -#include <sys/ioctl.h> - -static int orig_termios_fd = -1; -static struct termios orig_termios; -static uv_spinlock_t termios_spinlock = UV_SPINLOCK_INITIALIZER; - -static int uv__tty_is_slave(const int fd) { - int result; -#if defined(__linux__) || defined(__FreeBSD__) - int dummy; - - result = ioctl(fd, TIOCGPTN, &dummy) != 0; -#elif defined(__APPLE__) - char dummy[256]; - - result = ioctl(fd, TIOCPTYGNAME, &dummy) != 0; -#else - /* Fallback to ptsname - */ - result = ptsname(fd) == NULL; -#endif - return result; -} - -int uv_tty_init(uv_loop_t* loop, uv_tty_t* tty, int fd, int readable) { - uv_handle_type type; - int flags; - int newfd; - int r; - char path[256]; - - /* File descriptors that refer to files cannot be monitored with epoll. - * That restriction also applies to character devices like /dev/random - * (but obviously not /dev/tty.) - */ - type = uv_guess_handle(fd); - if (type == UV_FILE || type == UV_UNKNOWN_HANDLE) - return -EINVAL; - - flags = 0; - newfd = -1; - - /* Reopen the file descriptor when it refers to a tty. This lets us put the - * tty in non-blocking mode without affecting other processes that share it - * with us. - * - * Example: `node | cat` - if we put our fd 0 in non-blocking mode, it also - * affects fd 1 of `cat` because both file descriptors refer to the same - * struct file in the kernel. When we reopen our fd 0, it points to a - * different struct file, hence changing its properties doesn't affect - * other processes. - */ - if (type == UV_TTY) { - /* Reopening a pty in master mode won't work either because the reopened - * pty will be in slave mode (*BSD) or reopening will allocate a new - * master/slave pair (Linux). Therefore check if the fd points to a - * slave device. - */ - if (uv__tty_is_slave(fd) && ttyname_r(fd, path, sizeof(path)) == 0) - r = uv__open_cloexec(path, O_RDWR); - else - r = -1; - - if (r < 0) { - /* fallback to using blocking writes */ - if (!readable) - flags |= UV_STREAM_BLOCKING; - goto skip; - } - - newfd = r; - - r = uv__dup2_cloexec(newfd, fd); - if (r < 0 && r != -EINVAL) { - /* EINVAL means newfd == fd which could conceivably happen if another - * thread called close(fd) between our calls to isatty() and open(). - * That's a rather unlikely event but let's handle it anyway. - */ - uv__close(newfd); - return r; - } - - fd = newfd; - } - -skip: - uv__stream_init(loop, (uv_stream_t*) tty, UV_TTY); - - /* If anything fails beyond this point we need to remove the handle from - * the handle queue, since it was added by uv__handle_init in uv_stream_init. - */ - -#if defined(__APPLE__) - r = uv__stream_try_select((uv_stream_t*) tty, &fd); - if (r) { - if (newfd != -1) - uv__close(newfd); - QUEUE_REMOVE(&tty->handle_queue); - return r; - } -#endif - - if (readable) - flags |= UV_STREAM_READABLE; - else - flags |= UV_STREAM_WRITABLE; - - if (!(flags & UV_STREAM_BLOCKING)) - uv__nonblock(fd, 1); - - uv__stream_open((uv_stream_t*) tty, fd, flags); - tty->mode = UV_TTY_MODE_NORMAL; - - return 0; -} - -static void uv__tty_make_raw(struct termios* tio) { - assert(tio != NULL); - -#ifdef __sun - /* - * This implementation of cfmakeraw for Solaris and derivatives is taken from - * http://www.perkin.org.uk/posts/solaris-portability-cfmakeraw.html. - */ - tio->c_iflag &= ~(IMAXBEL | IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | - IGNCR | ICRNL | IXON); - tio->c_oflag &= ~OPOST; - tio->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); - tio->c_cflag &= ~(CSIZE | PARENB); - tio->c_cflag |= CS8; -#else - cfmakeraw(tio); -#endif /* #ifdef __sun */ -} - -int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) { - struct termios tmp; - int fd; - - if (tty->mode == (int) mode) - return 0; - - fd = uv__stream_fd(tty); - if (tty->mode == UV_TTY_MODE_NORMAL && mode != UV_TTY_MODE_NORMAL) { - if (tcgetattr(fd, &tty->orig_termios)) - return -errno; - - /* This is used for uv_tty_reset_mode() */ - uv_spinlock_lock(&termios_spinlock); - if (orig_termios_fd == -1) { - orig_termios = tty->orig_termios; - orig_termios_fd = fd; - } - uv_spinlock_unlock(&termios_spinlock); - } - - tmp = tty->orig_termios; - switch (mode) { - case UV_TTY_MODE_NORMAL: - break; - case UV_TTY_MODE_RAW: - tmp.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON); - tmp.c_oflag |= (ONLCR); - tmp.c_cflag |= (CS8); - tmp.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG); - tmp.c_cc[VMIN] = 1; - tmp.c_cc[VTIME] = 0; - break; - case UV_TTY_MODE_IO: - uv__tty_make_raw(&tmp); - break; - } - - /* Apply changes after draining */ - if (tcsetattr(fd, TCSADRAIN, &tmp)) - return -errno; - - tty->mode = mode; - return 0; -} - - -int uv_tty_get_winsize(uv_tty_t* tty, int* width, int* height) { - struct winsize ws; - int err; - - do - err = ioctl(uv__stream_fd(tty), TIOCGWINSZ, &ws); - while (err == -1 && errno == EINTR); - - if (err == -1) - return -errno; - - *width = ws.ws_col; - *height = ws.ws_row; - - return 0; -} - - -uv_handle_type uv_guess_handle(uv_file file) { - struct sockaddr sa; - struct stat s; - socklen_t len; - int type; - - if (file < 0) - return UV_UNKNOWN_HANDLE; - - if (isatty(file)) - return UV_TTY; - - if (fstat(file, &s)) - return UV_UNKNOWN_HANDLE; - - if (S_ISREG(s.st_mode)) - return UV_FILE; - - if (S_ISCHR(s.st_mode)) - return UV_FILE; /* XXX UV_NAMED_PIPE? */ - - if (S_ISFIFO(s.st_mode)) - return UV_NAMED_PIPE; - - if (!S_ISSOCK(s.st_mode)) - return UV_UNKNOWN_HANDLE; - - len = sizeof(type); - if (getsockopt(file, SOL_SOCKET, SO_TYPE, &type, &len)) - return UV_UNKNOWN_HANDLE; - - len = sizeof(sa); - if (getsockname(file, &sa, &len)) - return UV_UNKNOWN_HANDLE; - - if (type == SOCK_DGRAM) - if (sa.sa_family == AF_INET || sa.sa_family == AF_INET6) - return UV_UDP; - - if (type == SOCK_STREAM) { -#if defined(_AIX) - /* on AIX the getsockname call returns an empty sa structure - * for sockets of type AF_UNIX. For all other types it will - * return a properly filled in structure. - */ - if (len == 0) - return UV_NAMED_PIPE; -#endif /* defined(_AIX) */ - - if (sa.sa_family == AF_INET || sa.sa_family == AF_INET6) - return UV_TCP; - if (sa.sa_family == AF_UNIX) - return UV_NAMED_PIPE; - } - - return UV_UNKNOWN_HANDLE; -} - - -/* This function is async signal-safe, meaning that it's safe to call from - * inside a signal handler _unless_ execution was inside uv_tty_set_mode()'s - * critical section when the signal was raised. - */ -int uv_tty_reset_mode(void) { - int saved_errno; - int err; - - saved_errno = errno; - if (!uv_spinlock_trylock(&termios_spinlock)) - return -EBUSY; /* In uv_tty_set_mode(). */ - - err = 0; - if (orig_termios_fd != -1) - if (tcsetattr(orig_termios_fd, TCSANOW, &orig_termios)) - err = -errno; - - uv_spinlock_unlock(&termios_spinlock); - errno = saved_errno; - - return err; -} |