From: Matthias Kruk <m@m10k.eu>
Date: Wed, 18 Dec 2019 09:26:18 +0000 (+0900)
Subject: Implement sys_mmap() function
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=ae5a66494785cebfe63d9557bc5ca481c5a0b2ba;p=corax

Implement sys_mmap() function
---

diff --git a/kernel/core/posixcall.c b/kernel/core/posixcall.c
index 809460d..25ff841 100644
--- a/kernel/core/posixcall.c
+++ b/kernel/core/posixcall.c
@@ -353,6 +353,47 @@ int sys_setsid(void)
 	return(ret_val);
 }
 
+int sys_mmap(stack_frame_t *stk)
+{
+	int ret_val;
+	void *mapped;
+	void *addr;
+	size_t len;
+	int prot;
+	int flags;
+	int fd;
+	size_t offset;
+	process_t *cproc;
+
+	ret_val = -EFAULT;
+	mapped = (void*)-1;
+
+	addr = (void*)stk->ebx;
+	len = (size_t)stk->ecx;
+	prot = (int)stk->edx;
+	flags = (int)stk->esi;
+	fd = (int)stk->edi;
+	offset = (size_t)stk->ebp;
+
+	cproc = process_get_current();
+
+	if(cproc) {
+		pg_dir_t *pgdir;
+
+		ret_val = process_get_pagedir(cproc, &pgdir);
+
+		if(!ret_val) {
+			ret_val = pg_dir_mmap(pgdir, addr, len, prot, flags, &mapped);
+		}
+	}
+
+	if(!ret_val) {
+		ret_val = mapped;
+	}
+
+	return(ret_val);
+}
+
 int sys_posixcall(stack_frame_t *stk)
 {
 	int ret_val;
@@ -405,6 +446,14 @@ int sys_posixcall(stack_frame_t *stk)
 		ret_val = sys_execfve(stk);
 		break;
 
+	case SYS_MMAP:
+		ret_val = sys_mmap(stk);
+		break;
+
+	case SYS_MUNMAP:
+		ret_val = -ENOSYS;
+		break;
+
 	default:
 		ret_val = -EOPNOTSUPP;
 		break;