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| -rw-r--r-- | src/serial.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/serial.c b/src/serial.c new file mode 100644 index 0000000..5fff1bd --- /dev/null +++ b/src/serial.c @@ -0,0 +1,176 @@ +/* + * ptty.c: + * + * Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>, + * All rights reserved. + * + */ + +static char rcsid[] = "$Id$"; + +/* + * $Log$ + * Revision 1.1 2008/02/14 12:51:14 james + * *** empty log message *** + * + * Revision 1.4 2008/02/14 10:39:14 james + * *** empty log message *** + * + * Revision 1.3 2008/02/13 09:12:21 james + * *** empty log message *** + * + * Revision 1.2 2008/02/12 22:36:46 james + * *** empty log message *** + * + * Revision 1.1 2008/02/09 15:47:28 james + * *** empty log message *** + * + * Revision 1.2 2008/02/07 11:11:14 staffcvs + * *** empty log message *** + * + * Revision 1.1 2008/02/07 01:02:52 james + * *** empty log message *** + * + * Revision 1.3 2008/02/06 17:53:28 james + * *** empty log message *** + * + * Revision 1.2 2008/02/04 02:05:06 james + * *** empty log message *** + * + * Revision 1.1 2008/02/04 01:32:39 james + * *** empty log message *** + * + */ + +#include "project.h" + + +typedef struct +{ + TTY_SIGNATURE; + int fd; + pid_t child; +} PTTY; + + +static void +ptty_close (TTY * _t) +{ + PTTY *t = (PTTY *) _t; + + if (!t) + return; + + close (t->fd); + free (t); +} + + + +static int +ptty_read (TTY * _t, void *buf, int len) +{ + PTTY *t = (PTTY *) _t; + int red, done = 0; + + do + { + + red = wrap_read (t->fd, buf, len); + if (red < 0) + return -1; + if (!red) + return done; + + buf += red; + len -= red; + done += red; + } + while (len); + + + return done; +} + + +static int +ptty_write (TTY * _t, void *buf, int len) +{ + int writ, done = 0; + PTTY *t = (PTTY *) _t; + + do + { + + writ = wrap_write (t->fd, buf, len); + if (writ < 0) + return -1; + if (!writ) + sleep (1); + + buf += writ; + len -= writ; + done += writ; + } + while (len); + + + return done; +} + +TTY * +ptty_open (char *path, char *argv[]) +{ + PTTY *t; + pid_t child; + char name[1024]; + struct winsize winsize = { 0 }; + struct termios termios; + int fd; + char *default_argv[] = { "-", (char *) 0 }; + + + default_termios (&termios); + + winsize.ws_row = VT102_ROWS; + winsize.ws_col = VT102_COLS; + + child = forkpty (&fd, name, &termios, &winsize); + + switch (child) + { + case -1: /*boo hiss */ + return NULL; + case 0: /*waaah */ + setenv ("TERM", "vt102", 1); + setenv ("LANG", "C", 1); + if (!path) + path = "/bin/sh"; + + if (!argv) + argv = default_argv; + + execv (path, argv); + _exit (-1); + } + + set_nonblocking (fd); + + t = (PTTY *) malloc (sizeof (PTTY)); + + strncpy (t->name, name, sizeof (t->name)); + t->name[sizeof (t->name) - 1] = 0; + + t->recv = ptty_read; + t->xmit = ptty_write; + t->close = ptty_close; + t->fd = fd; + t->child = child; + t->rfd = t->fd; + t->wfd = t->fd; + t->size.x = winsize.ws_row; + t->size.y = winsize.ws_col; + t->blocked = 0; + + return (TTY *) t; +} |