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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/drivers/tty.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/drivers/tty.c')
-rw-r--r-- | arch/um/drivers/tty.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/um/drivers/tty.c b/arch/um/drivers/tty.c new file mode 100644 index 000000000000..6fbb670ee274 --- /dev/null +++ b/arch/um/drivers/tty.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2001 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include <stdio.h> +#include <termios.h> +#include <errno.h> +#include <unistd.h> +#include "chan_user.h" +#include "user_util.h" +#include "user.h" +#include "os.h" + +struct tty_chan { + char *dev; + int raw; + struct termios tt; +}; + +static void *tty_chan_init(char *str, int device, struct chan_opts *opts) +{ + struct tty_chan *data; + + if(*str != ':'){ + printk("tty_init : channel type 'tty' must specify " + "a device\n"); + return(NULL); + } + str++; + + data = um_kmalloc(sizeof(*data)); + if(data == NULL) + return(NULL); + *data = ((struct tty_chan) { .dev = str, + .raw = opts->raw }); + + return(data); +} + +static int tty_open(int input, int output, int primary, void *d, + char **dev_out) +{ + struct tty_chan *data = d; + int fd, err; + + fd = os_open_file(data->dev, of_set_rw(OPENFLAGS(), input, output), 0); + if(fd < 0) return(fd); + if(data->raw){ + CATCH_EINTR(err = tcgetattr(fd, &data->tt)); + if(err) + return(err); + + err = raw(fd); + if(err) + return(err); + } + + *dev_out = data->dev; + return(fd); +} + +static int tty_console_write(int fd, const char *buf, int n, void *d) +{ + struct tty_chan *data = d; + + return(generic_console_write(fd, buf, n, &data->tt)); +} + +struct chan_ops tty_ops = { + .type = "tty", + .init = tty_chan_init, + .open = tty_open, + .close = generic_close, + .read = generic_read, + .write = generic_write, + .console_write = tty_console_write, + .window_size = generic_window_size, + .free = generic_free, + .winch = 0, +}; + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ |