4 files changed, 32 insertions, 2 deletions
diff --git a/src/kernel/clock.c b/src/kernel/clock.c
index 5b80203..950f4ca 100644
--- a/src/kernel/clock.c
+++ b/src/kernel/clock.c
@@ -35,6 +35,8 @@ void clock_svc(uint32_t *args)
 		task_sleep(args[1]);
 	else if (args[0] == 1)
 		udelay(args[1]);
+	else if (args[0] == 2)
+		*((unsigned int *)args[1]) = ticks;
 }
 
 void clock_init(void)
diff --git a/src/kernel/svc.c b/src/kernel/svc.c
index 7d171c3..cf1fbe2 100644
--- a/src/kernel/svc.c
+++ b/src/kernel/svc.c
@@ -65,6 +65,7 @@ void SVC_Handler(void) {
 	case 2: /* Clock-related calls
 		 * 0 - delay
 		 * 1 - udelay
+		 * 2 - ticks
 		 */
 		clock_svc(args);
 		break;
@@ -74,6 +75,7 @@ void SVC_Handler(void) {
 		 * 1 - open
 		 * 2 - close
 		 * 3 - read
+		 * 4 - write
 		 */
 		vfs_svc(args);
 		break;
diff --git a/src/kernel/vfs.c b/src/kernel/vfs.c
index d6f9e14..da1d641 100644
--- a/src/kernel/vfs.c
+++ b/src/kernel/vfs.c
@@ -26,6 +26,9 @@ void vfs_svc(uint32_t *args)
 	case 3:
 		*((int *)args[4]) = vfs_read(args[1], args[2], (uint8_t *)args[3]);
 		break;
+	case 4:
+		*((int *)args[4]) = vfs_write(args[1], args[2], (const uint8_t *)args[3]);
+		break;
 	default:
 		break;
 	}
@@ -141,8 +144,30 @@ uint32_t vfs_read(int fd, uint32_t count, uint8_t *buffer)
 		VFS_EOF))
 		return 0;
 
-	uint32_t ret = vfs_volumes[vfs_files[fd].vol].funcs->read(vfs_files[fd].fsinfo,
-		count, buffer);
+	uint32_t ret = vfs_volumes[vfs_files[fd].vol].funcs->read(
+		vfs_files[fd].fsinfo, count, buffer);
+
+	if (ret < count)
+		vfs_files[fd].flags |= VFS_EOF;
+
+	return ret;
+}
+
+uint32_t vfs_write(int fd, uint32_t count, const uint8_t *buffer)
+{
+	if (fd < 0 || fd > VFS_MAX_FILES || count == 0 || buffer == 0)
+		return 0;
+	if (vfs_volumes[vfs_files[fd].vol].funcs->write == 0)
+		return -1;
+	if (vfs_files[fd].pid != task_getpid())
+		return 0;
+	// TODO append?
+	if ((!(vfs_files[fd].flags & VFS_FILE_WRITE)) || (vfs_files[fd].flags &
+		VFS_EOF))
+		return 0;
+
+	uint32_t ret = vfs_volumes[vfs_files[fd].vol].funcs->write(
+		vfs_files[fd].fsinfo, count, buffer);
 
 	if (ret < count)
 		vfs_files[fd].flags |= VFS_EOF;
diff --git a/src/kernel/vfs.h b/src/kernel/vfs.h
index c9c9179..29763a5 100644
--- a/src/kernel/vfs.h
+++ b/src/kernel/vfs.h
@@ -47,5 +47,6 @@ int vfs_mount(vfs_volume_funcs *funcs, uint32_t flags);
 int vfs_open(const char *path, uint32_t flags);
 int vfs_close(int fd);
 uint32_t vfs_read(int fd, uint32_t count, uint8_t *buffer);
+uint32_t vfs_write(int fd, uint32_t count, const uint8_t *buffer);
 
 #endif // VFS_H_