Celina's Git — CeDOS: c834992dc3aee3012ff54f0a0135245510d3e448

syscall: Add process_kill syscall and shell tool Adding a syscall and a shell tool to kill a process that is running asynchronously.

Celina Sophie Kalus

hello@celinakalus.de

Wed, 06 Dec 2023 00:48:31 +0100

commit c834992dc3aee3012ff54f0a0135245510d3e448

parent 01cff6e3cd9ffd4359b94e8daa9bc4a7b647b88e

4 files changed, 21 insertions(+), 1 deletions(-)

jump to

kernel/syscall.c

libcedos/cedos.c

libcedos/cedos.h

shell/kill.c

M kernel/syscall.c → kernel/syscall.c

@@ -24,7 +24,8 @@ file_dir_next,
         file_lseek,
         file_tell,
         time_get_ticks,
-        mem_usage
+        mem_usage,
+        sched_kill
     };
 
 extern void syscall_interrupt(void);

M libcedos/cedos.c → libcedos/cedos.c

@@ -95,3 +95,8 @@ volatile int res = 0;
     interrupt(0x30, res, 13, 0, 0, 0);
     return res;
 }
+
+void process_kill(int pid) {
+    volatile uint32_t res = 0;
+    interrupt(0x30, res, 14, pid, 0, 0);
+}

M libcedos/cedos.h → libcedos/cedos.h

@@ -11,6 +11,7 @@ int get_pid();
 int process_spawn(const char *fname, const char *args);
 int process_spawn_pipe(const char *fname, const char *args, int stdin, int stdout);
 void process_wait(int pid);
+void process_kill(int pid);
 
 void graphics_set_mode(int mode);

A shell/kill.c

@@ -0,0 +1,13 @@
+#include "cedos.h"
+
+#include <stdint.h>
+#include "stdlib.h"
+#include "string.h"
+
+#include "cedos.h"
+
+void main(char *args) {
+    int pid = atoi(args);
+
+    process_kill(pid);
+}