From 2ea826b428246eb62be81630f441a4367a675968 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 17 Aug 2024 17:10:04 +0200
Subject: *: getxattr

---
 src/bootstrap/tar.c | 70 ++++++++++++++++++++++++++++++++---------------------
 1 file changed, 43 insertions(+), 27 deletions(-)

(limited to 'src/bootstrap/tar.c')

diff --git a/src/bootstrap/tar.c b/src/bootstrap/tar.c
index 678f54f..61b5b03 100644
--- a/src/bootstrap/tar.c
+++ b/src/bootstrap/tar.c
@@ -1,12 +1,13 @@
 #include "tar.h"
+#include <camellia/compat.h>
 #include <camellia/flags.h>
+#include <camellia/fs/dir.h>
 #include <camellia/fsutil.h>
 #include <camellia/syscalls.h>
+#include <errno.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
-#include <camellia/compat.h>
-#include <camellia/fs/dir.h>
 
 #define BUF_SIZE 64
 
@@ -27,29 +28,46 @@ void tar_driver(void *base) {
 	void *ptr;
 	while (!c0_fs_wait(buf, BUF_SIZE, &res)) {
 		switch (res.op) {
-			case VFSOP_OPEN:
-				ptr = tar_open(buf, res.len, base, ~0);
-				c0_fs_respond(ptr, ptr ? 0 : -1, 0);
-				break;
-
-			case VFSOP_READ:
-				tar_read(&res, base, ~0);
-				break;
-
-			case VFSOP_GETSIZE:
-				if (tar_type(res.id) != '5') {
-					c0_fs_respond(NULL, tar_size(res.id), 0);
-				} else {
-					struct dirbuild db;
-					dir_start(&db, res.offset, NULL, 0);
-					tar_dirbuild(&db, res.id, base, ~0);
-					c0_fs_respond(NULL, dir_finish(&db), 0);
-				}
-				break;
-
-			default:
-				c0_fs_respond(NULL, -1, 0); // unsupported
-				break;
+		case VFSOP_OPEN:
+			ptr = tar_open(buf, res.len, base, ~0);
+			c0_fs_respond(ptr, ptr ? 0 : -1, 0);
+			break;
+
+		case VFSOP_READ:
+			tar_read(&res, base, ~0);
+			break;
+
+		case VFSOP_GETSIZE:
+			if (tar_type(res.id) != '5') {
+				c0_fs_respond(NULL, tar_size(res.id), 0);
+			} else {
+				struct dirbuild db;
+				dir_start(&db, res.offset, NULL, 0);
+				tar_dirbuild(&db, res.id, base, ~0);
+				c0_fs_respond(NULL, dir_finish(&db), 0);
+			}
+			break;
+
+		case VFSOP_GETXATTR:
+			if (strcmp("virt.index", buf) == 0) {
+				char res[] = "virt.mode\0virt.owner\0virt.group";
+				c0_fs_respond(res, sizeof(res), 0);
+			} else if (strcmp("virt.mode", buf) == 0) {
+				c0_fs_respond(res.id + 100, 7, 0);
+			} else if (strcmp("virt.owner", buf) == 0) {
+				ssize_t ret = snprintf(buf, BUF_SIZE, "%d", oct_parse(res.id + 108, 7));
+				c0_fs_respond(buf, ret, 0);
+			} else if (strcmp("virt.group", buf) == 0) {
+				ssize_t ret = snprintf(buf, BUF_SIZE, "%d", oct_parse(res.id + 116, 7));
+				c0_fs_respond(buf, ret, 0);
+			} else {
+				c0_fs_respond(NULL, -ENOENT, 0);
+			}
+			break;
+
+		default:
+			c0_fs_respond(NULL, -ENOSYS, 0); // unsupported
+			break;
 		}
 	}
 	exit(0);
@@ -60,7 +78,6 @@ static char tar_type(void *meta) {
 	return *(char*)(meta + 156);
 }
 
-#include <stdio.h>
 static void *tar_open(const char *path, int len, void *base, size_t base_len) {
 	void *res;
 	if (len <= 0) return NULL;
@@ -78,7 +95,6 @@ static void *tar_open(const char *path, int len, void *base, size_t base_len) {
 
 	res = tar_find(path, len, base, base_len);
 	if (res && tar_type(res) == '1') { /* hard link */
-		_klogf("hard link to %s", res+157);
 		res = tar_find(res + 157, strnlen(res + 157, 100), base, base_len);
 	}
 	return res;
-- 
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