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job control: sessions and process groups

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Matheus
2024-05-01 21:42:38 -03:00
parent 1f848fe596
commit 05049a091f
13 changed files with 484 additions and 18 deletions
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kernel-src/io/tty.c
+38 -1
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@@ -2,6 +2,7 @@
#include <kernel/devfs.h>
#include <logging.h>
#include <kernel/alloc.h>
#include <kernel/jobctl.h>
#define TTY_MAX_COUNT 4096
#define CONTROLLING_TTY_MINOR TTY_MAX_COUNT
@@ -237,6 +238,29 @@ static int isatty(int minor) {
return 0;
}
static int open(int minor, vnode_t **vnode, int flags) {
tty_t *tty = ttyget(minor);
if (minor == CONTROLLING_TTY_MINOR) {
// return controlling tty
tty_t *ctty = jobctl_getctty(_cpu()->thread->proc);
if (ctty == NULL) {
return ENXIO;
}
VOP_RELEASE(*vnode);
*vnode = (vnode_t *)(ctty->mastervnode);
} else if (tty == NULL) {
return ENODEV;
} else if ((flags & V_FFLAGS_NOCTTY) == 0) {
// set as controlling tty
jobctl_setctty(_cpu()->thread->proc, tty);
}
return 0;
}
static int allocminor(tty_t *tty) {
MUTEX_ACQUIRE(&listmutex, false);
@@ -264,7 +288,8 @@ static devops_t devops = {
.poll = poll,
.read = read,
.ioctl = ioctl,
.isatty = isatty
.isatty = isatty,
.open = open
};
tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
@@ -310,6 +335,14 @@ tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
tty->writetodevice = fn;
tty->minor = minor;
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);
return tty;
error:
if (tty->name)
@@ -322,6 +355,10 @@ tty_t *tty_create(char *name, ttydevicewritefn_t fn) {
return NULL;
}
void tty_unregister(char *name, tty_t *tty) {
}
void tty_destroy(char *name, tty_t *tty) {
}