diff options
| author | Jake Mannens <jake72360@gmail.com> | 2018-08-01 02:27:57 +1000 |
|---|---|---|
| committer | Jake Mannens <jake72360@gmail.com> | 2018-08-01 02:27:57 +1000 |
| commit | 8e933fac9fd068343bb602f13175c8d70a6c5768 (patch) | |
| tree | 2d0c2ef1c1165d701d94617986e80c7598d0fc4d /include/kernel | |
| parent | 7babda5d4573d432441a416f880cb8cc8c15b55b (diff) | |
Defined EOF as -1 in stdio.h.
Implemented the sprintf() library function in lib/stdio.c which uses the
vsprintf() function.
Implemented a very primative controlling TTY for each process. This is
achieved by a switch in the sys_puts system call which uses the 'ctty'
element of the process' task structure to determine an appropriate I/O
channel. A negative ctty value doesn't equate to any I/O channel
effectively disabling the process' output.
Added the sys_ctty system call which allows a process to set it's own
ctty value.
Removed the sys_rsputs system call. Output to serial is now performed by
the process first setting it's ctty value to 1, then invoking sys_puts.
Diffstat (limited to 'include/kernel')
| -rw-r--r-- | include/kernel/con.h | 2 | ||||
| -rw-r--r-- | include/kernel/sched.h | 1 | ||||
| -rw-r--r-- | include/kernel/sys.h | 8 |
3 files changed, 7 insertions, 4 deletions
diff --git a/include/kernel/con.h b/include/kernel/con.h index 9dd9dbe..d28daff 100644 --- a/include/kernel/con.h +++ b/include/kernel/con.h @@ -13,4 +13,6 @@ void con_clear(void); int printk(char*, ...); +int rsputs(char*); + #endif diff --git a/include/kernel/sched.h b/include/kernel/sched.h index 6b0488e..4d2aca0 100644 --- a/include/kernel/sched.h +++ b/include/kernel/sched.h @@ -50,6 +50,7 @@ struct task_struct { pid_t pid; int state; uint32_t signal; + int ctty; unsigned int alarm; void *sig_handlers[NRSIG]; struct tss_struct tss; diff --git a/include/kernel/sys.h b/include/kernel/sys.h index ba2dc0c..32788b1 100644 --- a/include/kernel/sys.h +++ b/include/kernel/sys.h @@ -5,9 +5,9 @@ extern int sys_time(void); extern int sys_getpid(void); extern int sys_getpdir(void); extern int sys_signal(void); -extern int sys_rsputs(void); extern int sys_alarm(void); extern int sys_pause(void); +extern int sys_ctty(void); extern int sys_dummy(void); syscall_t call_table[256] = { @@ -16,9 +16,9 @@ syscall_t call_table[256] = { [2] = &sys_getpid, [3] = &sys_getpdir, [4] = &sys_signal, - [5] = &sys_rsputs, - [6] = &sys_alarm, - [7] = &sys_pause, + [5] = &sys_alarm, + [6] = &sys_pause, + [7] = &sys_ctty, [8] = &sys_dummy, [9] = &sys_dummy, [10] = &sys_dummy, |