refactor: vmm_set_map has option to ignore existed mapping.

[lunaix-os.git] / lunaix-os / kernel / process.c

diff --git a/lunaix-os/kernel/process.c b/lunaix-os/kernel/process.c
index 87a7413c963f0db793f22f842c5c59bdaf491e50..c4e348f19b9dc96844f5cd71d33bd92136dbb2c0 100644 (file)
--- a/lunaix-os/kernel/process.c
+++ b/lunaix-os/kernel/process.c
@@ -1,10 +1,12 @@
 #include <klibc/string.h>
 #include <lunaix/clock.h>
 #include <lunaix/common.h>
+#include <lunaix/mm/pmm.h>
 #include <lunaix/mm/region.h>
 #include <lunaix/mm/vmm.h>
 #include <lunaix/process.h>
 #include <lunaix/spike.h>
+#include <lunaix/status.h>
 #include <lunaix/syscall.h>
 #include <lunaix/syslog.h>
 
@@ -14,7 +16,9 @@ void*
 __dup_pagetable(pid_t pid, uintptr_t mount_point)
 {
     void* ptd_pp = pmm_alloc_page(pid, PP_FGPERSIST);
-    x86_page_table* ptd = vmm_fmap_page(pid, PG_MOUNT_1, ptd_pp, PG_PREM_RW);
+    vmm_set_mapping(PD_REFERENCED, PG_MOUNT_1, ptd_pp, PG_PREM_RW, VMAP_NULL);
+
+    x86_page_table* ptd = PG_MOUNT_1;
     x86_page_table* pptd = (x86_page_table*)(mount_point | (0x3FF << 12));
 
     for (size_t i = 0; i < PG_MAX_ENTRIES - 1; i++) {
@@ -24,9 +28,12 @@ __dup_pagetable(pid_t pid, uintptr_t mount_point)
             continue;
         }
 
-        x86_page_table* ppt = (x86_page_table*)(mount_point | (i << 12));
         void* pt_pp = pmm_alloc_page(pid, PP_FGPERSIST);
-        x86_page_table* pt = vmm_fmap_page(pid, PG_MOUNT_2, pt_pp, PG_PREM_RW);
+        vmm_set_mapping(
+          PD_REFERENCED, PG_MOUNT_2, pt_pp, PG_PREM_RW, VMAP_NULL);
+
+        x86_page_table* ppt = (x86_page_table*)(mount_point | (i << 12));
+        x86_page_table* pt = PG_MOUNT_2;
 
         for (size_t j = 0; j < PG_MAX_ENTRIES; j++) {
             x86_pte_t pte = ppt->entry[j];
@@ -90,6 +97,36 @@ __DEFINE_LXSYSCALL(pid_t, getppid)
     return __current->parent->pid;
 }
 
+__DEFINE_LXSYSCALL(pid_t, getpgid)
+{
+    return __current->pgid;
+}
+
+__DEFINE_LXSYSCALL2(int, setpgid, pid_t, pid, pid_t, pgid)
+{
+    struct proc_info* proc = pid ? get_process(pid) : __current;
+
+    if (!proc) {
+        __current->k_status = LXINVL;
+        return -1;
+    }
+
+    pgid = pgid ? pgid : proc->pid;
+
+    struct proc_info* gruppenfuhrer = get_process(pgid);
+
+    if (!gruppenfuhrer || proc->pgid == proc->pid) {
+        __current->k_status = LXINVL;
+        return -1;
+    }
+
+    llist_delete(&proc->grp_member);
+    llist_append(&gruppenfuhrer->grp_member, &proc->grp_member);
+
+    proc->pgid = pgid;
+    return 0;
+}
+
 void
 init_proc(struct proc_info* pcb)
 {
@@ -98,6 +135,7 @@ init_proc(struct proc_info* pcb)
     pcb->pid = alloc_pid();
     pcb->created = clock_systime();
     pcb->state = PROC_CREATED;
+    pcb->pgid = pcb->pid;
 }
 
 pid_t