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pty: initial implementation

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Matheus
2024-05-03 14:03:41 -03:00
parent dd46c4b766
commit 33c8a4d107
6 changed files with 361 additions and 20 deletions
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kernel-src/io/tty.c
+32 -15
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@@ -31,7 +31,7 @@ void tty_process(tty_t *tty, char c) {
tty->devicebuffer[tty->devicepos] = '\0';
if (tty->termios.c_lflag & ECHO)
tty->writetodevice("\b \b", 3);
tty->writetodevice(tty->deviceinternal, "\b \b", 3);
return;
} else if (c == '\n') {
// newline
@@ -39,7 +39,7 @@ void tty_process(tty_t *tty, char c) {
}
if (tty->termios.c_lflag & ECHO)
tty->writetodevice(&c, 1);
tty->writetodevice(tty->deviceinternal, &c, 1);
// check if buffer is full
tty->devicebuffer[tty->devicepos++] = c;
@@ -59,7 +59,7 @@ void tty_process(tty_t *tty, char c) {
}
} else {
if (tty->termios.c_lflag & ECHO)
tty->writetodevice(&c, 1);
tty->writetodevice(tty->deviceinternal, &c, 1);
MUTEX_ACQUIRE(&tty->readmutex, false);
@@ -89,11 +89,11 @@ static int internalpoll(tty_t *tty, polldata_t *data, int events) {
if ((events & POLLIN) && RINGBUFFER_DATACOUNT(&tty->readbuffer))
revents |= POLLIN;
MUTEX_RELEASE(&tty->readmutex);
if (revents == 0 && data)
poll_add(&tty->pollheader, data, events);
MUTEX_RELEASE(&tty->readmutex);
return revents;
}
@@ -199,7 +199,7 @@ static int write(int minor, void *buffer, size_t size, uintmax_t offset, int fla
// TODO background process stuff etc
*writec = size;
tty->writetodevice(buffer, size);
tty->writetodevice(tty->deviceinternal, buffer, size);
return 0;
}
@@ -283,16 +283,35 @@ static void freeminor(int minor) {
MUTEX_RELEASE(&listmutex);
}
static void tty_destroy(tty_t *tty) {
freeminor(tty->minor);
ringbuffer_destroy(&tty->readbuffer);
free(tty->devicebuffer);
free(tty->name);
free(tty);
}
static void inactive(int minor) {
tty_t *tty = ttyget(minor);
__assert(tty);
if (tty->inactivedevice)
tty->inactivedevice(tty->deviceinternal);
tty_destroy(tty);
}
static devops_t devops = {
.write = write,
.poll = poll,
.read = read,
.ioctl = ioctl,
.isatty = isatty,
.open = open
.open = open,
.inactive = inactive
};
tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
tty_t *tty_create(char *name, ttydevicewritefn_t writefn, ttyinactivefn_t inactivefn, void *internal) {
tty_t *tty = alloc(sizeof(tty_t));
if (tty == NULL)
return NULL;
@@ -332,14 +351,15 @@ tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
tty->termios.obaud = 38400;
tty->termios.c_cc[VMIN] = 1;
tty->writetodevice = fn;
tty->writetodevice = writefn;
tty->inactivedevice = inactivefn;
tty->minor = minor;
tty->deviceinternal = internal;
vnode_t *newnode;
__assert(devfs_getnode(NULL, DEV_MAJOR_TTY, minor, &newnode) == 0);
tty->mastervnode = (vnode_t *)((devnode_t *)newnode)->master;
VOP_HOLD(tty->mastervnode);
VOP_RELEASE(newnode);
@@ -355,13 +375,10 @@ tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
return NULL;
}
void tty_unregister(char *name, tty_t *tty) {
void tty_unregister(tty_t *tty) {
devfs_remove(tty->name, DEV_MAJOR_TTY, tty->minor);
}
void tty_destroy(char *name, tty_t *tty) {
}
void tty_init() {
__assert(devfs_register(&devops, "tty", V_TYPE_CHDEV, DEV_MAJOR_TTY, CONTROLLING_TTY_MINOR, 0644) == 0);