Add unit test for pax-header tar and clean up

src/overlaybd/tar/erofs/liberofs.cpp

@@ -583,7 +583,7 @@ static int erofs_write_map_file(photon::fs::IFile *fout, uint64_t blksz, FILE *f
     uint32_t nblocks, zeroedlen;
     char *line = NULL;
     size_t len  = 0;
-    int cnt;
+    int cnt, err = 0;
 
     if (fp == NULL) {
        LOG_ERROR("unable to get upper.map, ignored");
@@ -597,6 +597,7 @@ static int erofs_write_map_file(photon::fs::IFile *fout, uint64_t blksz, FILE *f
         cnt = sscanf(line, "%" PRIx64" %x%" PRIx64 "%u", &blkaddr, &nblocks, &toff, &zeroedlen);
         if (cnt < 3) {
             LOG_ERROR("Bad formatted map file.");
+            err = -EINVAL;
             break;
         }
 
@@ -608,12 +609,15 @@ static int erofs_write_map_file(photon::fs::IFile *fout, uint64_t blksz, FILE *f
 
         int nwrite = fout->ioctl(LSMT::IFileRW::RemoteData, lba);
         if ((unsigned) nwrite != lba.count) {
-            LOG_ERRNO_RETURN(0, -1, "failed to write lba");
+            LOG_ERROR("failed to write lba");
+            err = -EINVAL;
+            break;
         }
     }
-    free(line);
+    if (line)
+        free(line);
 
-    return 0;
+    return err;
 }
 
 static int erofs_close_sbi(struct erofs_sb_info *sbi, ErofsCache *cache)

src/overlaybd/tar/erofs/test/CMakeLists.txt

@@ -7,7 +7,12 @@ link_directories($ENV{GTEST}/lib)
 add_executable(erofs_test test.cpp)
 target_include_directories(erofs_test PUBLIC ${PHOTON_INCLUDE_DIR})
 target_link_libraries(erofs_test gtest gtest_main pthread photon_static
-  tar_lib lsmt_lib gzip_lib gzindex_lib checksum_lib)
+  tar_lib lsmt_lib gzip_lib gzindex_lib checksum_lib overlaybd_image_lib)
+
+target_include_directories(erofs_test PUBLIC
+    ${PHOTON_INCLUDE_DIR}
+    ${rapidjson_SOURCE_DIR}/include
+)
 
 add_test(
   NAME erofs_test

src/overlaybd/tar/erofs/test/test.cpp

@@ -24,17 +24,58 @@
 #include <photon/common/alog.h>
 #include <photon/common/alog-stdstring.h>
 #include <vector>
+#include <dirent.h>
 #include "../../../gzindex/gzfile.h"
 #include "../../../lsmt/file.h"
 #include "../liberofs.h"
 #include "../../tar_file.cpp"
 #include "../../../gzip/gz.h"
 #include "../../../../tools/sha256file.h"
+#include "../../../../tools/comm_func.h"
 
 
 #define FILE_SIZE (2 * 1024 * 1024)
 #define IMAGE_SIZE 512UL<<20
 class ErofsTest : public ::testing::Test {
+public:
+    static int inflate(std::string output_file, unsigned char *data, unsigned int size) {
+        unsigned char out[65536];
+        z_stream strm;
+        int ret;
+	/* allocate inflate state */
+        strm.zalloc = Z_NULL;
+        strm.zfree = Z_NULL;
+        strm.opaque = Z_NULL;
+        strm.avail_in = 0;
+        strm.next_in = Z_NULL;
+        ret = inflateInit2(&strm, 31);
+        if (ret != Z_OK)
+           return ret;
+        DEFER((void)inflateEnd(&strm));
+        strm.avail_in = size;
+        strm.next_in = data;
+        int fd = open(output_file.c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0644);
+        if (fd < 0)
+	   return fd;
+	DEFER(close(fd));
+        do {
+           strm.avail_out = sizeof(out);
+           strm.next_out = out;
+           ret = ::inflate(&strm, Z_NO_FLUSH);
+           switch (ret) {
+            case Z_NEED_DICT:
+            case Z_DATA_ERROR:
+            case Z_MEM_ERROR:
+                return -1;
+            }
+            int have = sizeof(out) - strm.avail_out;
+            if (write(fd, out, have) != have) {
+                return -1;
+            }
+        } while (strm.avail_out == 0);
+        return 0;
+    }
+
 protected:
     virtual void SetUp() override{
         fs = photon::fs::new_localfs_adaptor();
@@ -84,43 +125,6 @@ class ErofsTest : public ::testing::Test {
         return 0;
     }
 
-    int inflate(unsigned char *data, unsigned int size) {
-        unsigned char out[65536];
-        z_stream strm;
-        int ret;
-	/* allocate inflate state */
-        strm.zalloc = Z_NULL;
-        strm.zfree = Z_NULL;
-        strm.opaque = Z_NULL;
-        strm.avail_in = 0;
-        strm.next_in = Z_NULL;
-        ret = inflateInit2(&strm, 31);
-        if (ret != Z_OK)
-           return ret;
-        DEFER((void)inflateEnd(&strm));
-        strm.avail_in = size;
-        strm.next_in = data;
-        int fd = open(std::string(workdir + "/test.tar").c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0644);
-        if (fd < 0)
-	   return fd;
-	DEFER(close(fd));
-        do {
-           strm.avail_out = sizeof(out);
-           strm.next_out = out;
-           ret = ::inflate(&strm, Z_NO_FLUSH);
-           switch (ret) {
-            case Z_NEED_DICT:
-            case Z_DATA_ERROR:
-            case Z_MEM_ERROR:
-                return -1;
-            }
-            int have = sizeof(out) - strm.avail_out;
-            if (write(fd, out, have) != have) {
-                return -1;
-            }
-        } while (strm.avail_out == 0);
-        return 0;
-    }
     int write_file(photon::fs::IFile *file) {
         std::string bb = "abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz01";
         ssize_t size = 0;
@@ -221,7 +225,7 @@ TEST_F(ErofsTest, tar_meta) {
         0x49, 0x1c, 0x0f, 0x00, 0x28, 0x00, 0x00
     };
     // set_log_output_level(0);
-    ASSERT_EQ(0, inflate(tar_zipped, sizeof(tar_zipped)));
+    ASSERT_EQ(0, ErofsTest::inflate(workdir + "/test.tar", tar_zipped, sizeof(tar_zipped)));
 
     auto src_file = fs->open("test.tar", O_RDONLY, 0666);
     ASSERT_NE(nullptr, src_file);
@@ -250,6 +254,303 @@ TEST_F(ErofsTest, tar_meta) {
     delete tar_idx;
 }
 
+class ErofsPax : public ::testing::Test {
+protected:
+    photon::fs::IFileSystem *host_fs;
+    std::string workdir = "/tmp/pax_test";
+    std::string src_path = workdir + "/pax.tar";
+    std::string fn_idx = workdir + "/index.idx";
+    std::string fn_meta = workdir + "/erofs.fs.meta";
+    std::string sha256_path = workdir + "/sha256";
+
+    virtual void SetUp() override{
+        ASSERT_EQ(0, prepare_host_fs());
+    }
+
+    virtual void TearDown() override{
+        ASSERT_NE(nullptr, host_fs);
+        if (host_fs->access(src_path.c_str(), 0) == 0)
+            ASSERT_EQ(0, host_fs->unlink(src_path.c_str()));
+        if (host_fs->access(fn_idx.c_str(), 0) == 0)
+            ASSERT_EQ(0, host_fs->unlink(fn_idx.c_str()));
+        if (host_fs->access(fn_meta.c_str(), 0) == 0)
+            ASSERT_EQ(0, host_fs->unlink(fn_meta.c_str()));
+        if (host_fs->access(sha256_path.c_str(), 0) == 0)
+            ASSERT_EQ(0, host_fs->unlink(sha256_path.c_str()));
+        delete host_fs;
+    }
+
+    int prepare_host_fs() {
+        host_fs = photon::fs::new_localfs_adaptor();
+        if (!host_fs)
+            return -1;
+        if (host_fs->access(workdir.c_str(), 0) != 0) {
+            if (host_fs->mkdir(workdir.c_str(), 0755))
+                return -1;
+        }
+        return 0;
+    }
+};
+
+TEST_F(ErofsPax, pax_test) {
+
+    static const unsigned char tar_zipped[3149] = {
+        0x1f, 0x8b, 0x08, 0x08, 0x97, 0x59, 0x35, 0x67, 0x00, 0x03, 0x70, 0x61, 0x78, 0x2e, 0x74, 0x61,
+        0x72, 0x00, 0xed, 0x9d, 0xdb, 0x72, 0xdb, 0x46, 0x12, 0x86, 0x7d, 0x9d, 0xa7, 0xf0, 0x0b, 0x88,
+        0x9a, 0xf3, 0x00, 0x17, 0xbe, 0xd8, 0x8a, 0x53, 0xb1, 0xab, 0xe2, 0xda, 0xad, 0x24, 0x37, 0xb9,
+        0x72, 0x0d, 0x0e, 0x94, 0x18, 0x8b, 0x87, 0x22, 0x21, 0xaf, 0x95, 0xa7, 0xdf, 0x01, 0x28, 0x99,
+        0xc4, 0x90, 0xc4, 0x60, 0xc0, 0x41, 0x0b, 0xeb, 0xea, 0xef, 0x22, 0xb6, 0x25, 0x39, 0x6d, 0xe9,
+        0x6f, 0xfc, 0xdd, 0x33, 0x98, 0xc3, 0xec, 0xf6, 0x3f, 0xe6, 0xdb, 0x87, 0xd2, 0x14, 0xe5, 0x76,
+        0x37, 0xe3, 0x52, 0x72, 0x96, 0xb2, 0xdb, 0xf2, 0x9b, 0x59, 0x6e, 0x1e, 0xca, 0xcf, 0x85, 0xa9,
+        0xcc, 0x9b, 0xeb, 0x21, 0x16, 0x25, 0x44, 0xf3, 0xab, 0xc5, 0xfd, 0x95, 0x50, 0xce, 0xde, 0x50,
+        0xa1, 0xa9, 0xe0, 0x8c, 0x71, 0x66, 0x3f, 0x4e, 0xb9, 0xfd, 0xd3, 0x9b, 0xb7, 0xdf, 0x22, 0xc4,
+        0xf6, 0xf2, 0xb8, 0xab, 0xcc, 0xd6, 0xfe, 0x53, 0x20, 0x62, 0x4d, 0x10, 0x4e, 0xde, 0x2e, 0xab,
+        0xc5, 0xb2, 0x7c, 0x47, 0x35, 0xa7, 0x9c, 0x28, 0x4d, 0xc4, 0x8c, 0x8b, 0x54, 0xa7, 0x24, 0xa1,
+        0xea, 0x27, 0xfb, 0x59, 0x73, 0xfa, 0xd9, 0xc4, 0x7e, 0x56, 0x27, 0xbc, 0xfe, 0x6c, 0x7e, 0xf9,
+        0xef, 0xbe, 0xf6, 0x77, 0x86, 0xf4, 0x21, 0xf2, 0xa3, 0x7e, 0x96, 0x97, 0xe7, 0x5f, 0x32, 0xc5,
+        0x08, 0xdb, 0x3f, 0xf7, 0xf4, 0xc5, 0x0f, 0x18, 0x6f, 0xbc, 0xa0, 0xfd, 0xfc, 0x4b, 0x26, 0xe5,
+        0x9b, 0xb7, 0x20, 0xcf, 0xe4, 0xcb, 0xf3, 0x7f, 0xbf, 0x5e, 0xdd, 0xfd, 0x73, 0x5f, 0xae, 0x66,
+        0x0f, 0xf7, 0xff, 0x9c, 0xff, 0x3a, 0xeb, 0x90, 0x1d, 0xff, 0x1f, 0xd7, 0xdc, 0xfe, 0x4f, 0x38,
+        0xb6, 0x7f, 0x72, 0x3b, 0xfb, 0xfd, 0xfd, 0x08, 0x79, 0x70, 0xc1, 0xf7, 0x0f, 0xfe, 0x2f, 0xd8,
+        0xf7, 0xdf, 0x37, 0x1f, 0xa7, 0x94, 0xa1, 0xff, 0xc3, 0x20, 0xd8, 0xdb, 0x3f, 0x7e, 0xfe, 0xf0,
+        0xf1, 0xb7, 0xbf, 0x66, 0xdf, 0x4c, 0x55, 0x6d, 0x67, 0xd5, 0xd6, 0xfe, 0x40, 0xca, 0x62, 0xb6,
+        0xfe, 0x5a, 0x6e, 0x1f, 0xcc, 0xd3, 0x6c, 0x59, 0x56, 0x26, 0x5f, 0x6f, 0x9e, 0xde, 0xfd, 0x24,
+        0x55, 0xf7, 0x57, 0x6e, 0xcb, 0x62, 0xb1, 0x2d, 0xf3, 0xea, 0xdd, 0xed, 0xdc, 0xfe, 0xf6, 0xb6,
+        0x78, 0x4e, 0x26, 0xac, 0x03, 0x93, 0x66, 0xa4, 0x47, 0xbe, 0x45, 0xe3, 0xff, 0xaa, 0xf1, 0x7b,
+        0xaa, 0x25, 0x3d, 0xfe, 0xb5, 0x46, 0x12, 0xc1, 0xad, 0xff, 0x2b, 0xa6, 0xa8, 0xe2, 0x44, 0xb3,
+        0xba, 0xff, 0xd3, 0x44, 0x01, 0xfb, 0xff, 0x32, 0x33, 0x4f, 0xab, 0x6a, 0xbd, 0xba, 0xf4, 0x75,
+        0xbe, 0xcf, 0xff, 0x20, 0xfe, 0x7f, 0xbf, 0xd8, 0x55, 0xeb, 0xed, 0x53, 0xd4, 0x18, 0x7e, 0xff,
+        0x97, 0x8e, 0xff, 0x33, 0xca, 0x04, 0xfa, 0x3f, 0x04, 0x01, 0xfe, 0x9f, 0x06, 0xfb, 0xff, 0x73,
+        0x32, 0x61, 0x09, 0x98, 0x2e, 0x23, 0x3d, 0xf2, 0x2d, 0x1a, 0xff, 0xdf, 0x3f, 0xef, 0xe7, 0xfc,
+        0x9f, 0xd4, 0x0f, 0x7b, 0xdb, 0xff, 0x85, 0xa4, 0x1a, 0xfd, 0x1f, 0x82, 0xdb, 0xd9, 0xdd, 0xa2,
+        0x1a, 0x39, 0x46, 0xfd, 0xf3, 0xd0, 0x5a, 0x5e, 0xd4, 0x7f, 0x3f, 0xfe, 0xdb, 0xeb, 0x4f, 0xc5,
+        0x7e, 0xfe, 0x47, 0xd9, 0xfa, 0x2f, 0x47, 0xfe, 0x77, 0x35, 0xa0, 0xfe, 0x8b, 0xaa, 0xdd, 0x04,
+        0xfc, 0xfc, 0xef, 0x4f, 0x9f, 0x3e, 0xfe, 0xf9, 0xf9, 0x97, 0xf7, 0x1f, 0xff, 0xfc, 0xf4, 0xc7,
+        0xaf, 0x11, 0x62, 0x78, 0xeb, 0xbf, 0xd4, 0x4e, 0xfd, 0xe7, 0x8c, 0x73, 0xac, 0xff, 0x10, 0xf4,
+        0xaf, 0xff, 0x2a, 0xb8, 0xfe, 0xd7, 0x99, 0xd5, 0x4e, 0x26, 0xec, 0x04, 0xa6, 0xc6, 0x39, 0x95,
+        0x62, 0xc7, 0xf0, 0x8c, 0xff, 0xea, 0x01, 0xe0, 0xc1, 0xff, 0xed, 0x83, 0x6f, 0x0d, 0x41, 0x71,
+        0xe8, 0xf9, 0x3f, 0xf4, 0xff, 0x17, 0xff, 0xff, 0xf0, 0xcb, 0xbf, 0xde, 0x47, 0x8d, 0x11, 0x3e,
+        0xfe, 0xb3, 0x09, 0x20, 0xd1, 0xff, 0x21, 0x18, 0x73, 0xfc, 0x57, 0x67, 0x56, 0x9d, 0x4c, 0xe8,
+        0xfa, 0xd3, 0xe5, 0xa0, 0xd2, 0x78, 0x31, 0x7c, 0xfe, 0x4f, 0xb8, 0x7e, 0xf1, 0x7f, 0xa6, 0xb5,
+        0xae, 0xc7, 0x7f, 0x8c, 0x12, 0xf4, 0x7f, 0x08, 0xf6, 0xfa, 0x67, 0x5b, 0xb3, 0xca, 0xef, 0xcb,
+        0xae, 0xf7, 0x5b, 0x57, 0x10, 0x30, 0xfe, 0xa3, 0x9a, 0xb1, 0xfd, 0xfb, 0x3f, 0x8d, 0xe3, 0x3f,
+        0x08, 0xce, 0xd4, 0xff, 0x7c, 0xbd, 0x9a, 0x2f, 0xee, 0x22, 0xc6, 0xf0, 0xd7, 0x7f, 0x77, 0xfc,
+        0x67, 0x87, 0x7f, 0x38, 0xfe, 0x03, 0x21, 0x60, 0xfc, 0x47, 0x87, 0xd4, 0xff, 0x7d, 0x32, 0x61,
+        0x07, 0x30, 0x55, 0x8e, 0x55, 0x1a, 0x2b, 0x86, 0x77, 0xfc, 0x47, 0xa5, 0x33, 0xff, 0x27, 0x34,
+        0xc7, 0xf7, 0x7f, 0x20, 0x9c, 0xf1, 0xff, 0xa2, 0xdc, 0xe5, 0xdb, 0xc5, 0xa6, 0x5a, 0x5c, 0xfe,
+        0x66, 0xc3, 0xf0, 0xfa, 0xbf, 0x14, 0x8e, 0xff, 0x73, 0x41, 0x34, 0xfa, 0x3f, 0x04, 0x01, 0xfe,
+        0x1f, 0xbc, 0xfe, 0xa3, 0xce, 0xac, 0xa3, 0x64, 0xc2, 0x22, 0x30, 0x41, 0x4e, 0x54, 0x1a, 0x21,
+        0x86, 0xcf, 0xff, 0x29, 0xa5, 0x4e, 0xff, 0xaf, 0x08, 0x8e, 0xff, 0x60, 0xd8, 0xeb, 0x7f, 0xbf,
+        0x5e, 0x7f, 0x19, 0x69, 0xf0, 0xf7, 0x66, 0xc8, 0xf8, 0x4f, 0x28, 0xdb, 0x12, 0xe0, 0xf8, 0x0f,
+        0x80, 0x23, 0xfd, 0xdb, 0x5d, 0x80, 0xd9, 0x6c, 0x1e, 0x9e, 0x36, 0xa6, 0xca, 0xef, 0x6f, 0x96,
+        0xbb, 0xbb, 0xd9, 0xae, 0x59, 0x26, 0x3c, 0x2c, 0x86, 0xb7, 0xfe, 0x6b, 0xb7, 0xfe, 0x2b, 0x61,
+        0xd3, 0x00, 0xeb, 0x3f, 0x00, 0xfd, 0xeb, 0x7f, 0xe2, 0xf9, 0xca, 0xf3, 0xf5, 0x7f, 0x9f, 0x59,
+        0x67, 0x93, 0x09, 0xfb, 0x81, 0x09, 0xe0, 0x55, 0x29, 0x42, 0x0c, 0x9f, 0xff, 0xd7, 0x83, 0xbd,
+        0x96, 0xff, 0x33, 0x4a, 0x04, 0xc5, 0xfa, 0x0f, 0xc1, 0x45, 0xff, 0xcf, 0xd7, 0xcb, 0xe5, 0xa2,
+        0x8a, 0x92, 0x08, 0x7e, 0xff, 0x27, 0x8e, 0xff, 0x4b, 0x29, 0x70, 0xfd, 0x3f, 0x08, 0xfd, 0xfd,
+        0x5f, 0x27, 0xc3, 0xfd, 0xff, 0x24, 0x99, 0xd0, 0xfb, 0x27, 0x42, 0xa7, 0x4a, 0x91, 0x62, 0x78,
+        0xfc, 0x9f, 0x2a, 0xb7, 0xff, 0x67, 0xd6, 0x01, 0x38, 0xfa, 0x3f, 0x04, 0x17, 0xfd, 0x7f, 0xbe,
+        0x5b, 0xae, 0x57, 0x8b, 0x6a, 0xbd, 0xbd, 0xf9, 0x6f, 0xdd, 0x11, 0x2c, 0xcd, 0x6a, 0x70, 0x52,
+        0xf8, 0xfc, 0x9f, 0x11, 0xd7, 0xff, 0x35, 0xd3, 0x38, 0xff, 0x07, 0x42, 0x40, 0xff, 0x3f, 0x68,
+        0xfe, 0x6f, 0x9f, 0x59, 0x17, 0x93, 0x09, 0xeb, 0xc0, 0x2b, 0xd3, 0x4b, 0xa5, 0x2b, 0x63, 0x74,
+        0xfb, 0x3f, 0xa5, 0x44, 0x6a, 0xb7, 0xff, 0xd7, 0x0c, 0xdf, 0xff, 0x80, 0x70, 0xd1, 0xff, 0x37,
+        0xeb, 0x5d, 0x75, 0xf3, 0xb8, 0x29, 0x4c, 0x55, 0x5e, 0x9b, 0x05, 0xfe, 0xfe, 0x9f, 0xba, 0xfd,
+        0xbf, 0xc6, 0xf7, 0xff, 0x30, 0x04, 0xf4, 0xff, 0x83, 0xd6, 0xff, 0xed, 0x33, 0xeb, 0x34, 0x99,
+        0xd0, 0xf8, 0xa7, 0x41, 0xb7, 0x4a, 0x71, 0x62, 0x78, 0xfa, 0x7f, 0xc2, 0xb4, 0x74, 0xfb, 0x7f,
+        0x8e, 0xfd, 0x3f, 0x0c, 0x97, 0xfd, 0x7f, 0x5b, 0xde, 0x1c, 0x26, 0x04, 0x71, 0xfe, 0xff, 0x07,
+        0x05, 0x66, 0xfe, 0xff, 0x6c, 0x32, 0x61, 0x09, 0x98, 0x00, 0x5e, 0x95, 0x22, 0xc4, 0xf0, 0xf9,
+        0xbf, 0x92, 0xee, 0xfc, 0x0f, 0x25, 0x5c, 0xa0, 0xff, 0x43, 0xd0, 0xe9, 0xff, 0xfb, 0x09, 0x41,
+        0x9c, 0xff, 0xff, 0x81, 0x81, 0x99, 0xff, 0x3f, 0x49, 0x26, 0xf4, 0xfe, 0x89, 0xd0, 0xa9, 0x52,
+        0xa4, 0x18, 0x1e, 0xff, 0xe7, 0xf5, 0x64, 0xbf, 0x3b, 0xff, 0xaf, 0x70, 0xfd, 0x17, 0x08, 0x9d,
+        0xfe, 0xbf, 0x2c, 0xb7, 0x77, 0x11, 0x52, 0xc2, 0xef, 0xff, 0xca, 0xed, 0xff, 0xeb, 0xe3, 0x02,
+        0xd1, 0xff, 0x01, 0x08, 0xe8, 0xff, 0xc5, 0x75, 0xfe, 0x7f, 0x26, 0x99, 0xb0, 0x0a, 0xbc, 0x3a,
+        0x3d, 0x54, 0xba, 0x3a, 0x86, 0xb7, 0xff, 0x17, 0x27, 0xfd, 0x3f, 0xc3, 0xf9, 0x1f, 0x18, 0x3a,
+        0xfd, 0x7f, 0xf3, 0xb8, 0x8b, 0x31, 0x0c, 0xf4, 0xfa, 0xbf, 0x72, 0xfd, 0x5f, 0x32, 0x8e, 0xfb,
+        0xff, 0x41, 0x08, 0xe8, 0xff, 0xaf, 0x78, 0xff, 0xeb, 0x24, 0x13, 0xfa, 0xfe, 0x64, 0xe8, 0x50,
+        0x29, 0x5a, 0x0c, 0x8f, 0xff, 0x5b, 0xaf, 0x77, 0xd6, 0x7f, 0xda, 0x86, 0x10, 0xfd, 0x1f, 0x86,
+        0x4e, 0xff, 0xdf, 0x96, 0x99, 0xd9, 0x5d, 0xff, 0x2e, 0xc8, 0xdf, 0xff, 0x9f, 0xce, 0xff, 0x50,
+        0x9c, 0xff, 0x07, 0x01, 0x6e, 0xfe, 0xa7, 0x95, 0x4c, 0x58, 0x01, 0x26, 0x42, 0xa7, 0x4a, 0x91,
+        0x62, 0x74, 0xfb, 0x3f, 0xa5, 0x42, 0xb0, 0x93, 0xf9, 0x1f, 0x8e, 0xeb, 0xff, 0x41, 0xf0, 0xf8,
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+        0xaa, 0xc7, 0x6d, 0x61, 0x9e, 0x3e, 0x67, 0x8b, 0x2f, 0xe5, 0x6e, 0x96, 0xef, 0xbe, 0x5e, 0x19,
+        0xc3, 0x5b, 0xff, 0x95, 0x3b, 0xfe, 0x17, 0x9a, 0x63, 0xfd, 0x07, 0x21, 0x60, 0xfe, 0x97, 0x07,
+        0xd6, 0xff, 0x26, 0xb3, 0x4e, 0x93, 0x09, 0x3b, 0x82, 0x29, 0x71, 0x49, 0xa5, 0x98, 0x31, 0x3a,
+        0xeb, 0x3f, 0xe5, 0x8c, 0xba, 0xf3, 0xbf, 0x54, 0x73, 0x5c, 0xff, 0x0f, 0x83, 0xbb, 0xde, 0x6b,
+        0xb5, 0x98, 0x97, 0xbb, 0x6a, 0xf6, 0xf7, 0xee, 0xf2, 0x77, 0x1a, 0x8c, 0xd7, 0xff, 0xa5, 0x3b,
+        0xfe, 0x63, 0x5a, 0xe3, 0xfa, 0x5f, 0x10, 0x02, 0xf6, 0x7f, 0x85, 0xfa, 0x7f, 0x2b, 0x99, 0xd0,
+        0xf5, 0xa7, 0xc9, 0x48, 0x8f, 0x7c, 0x8b, 0x4e, 0xff, 0x57, 0x5c, 0xda, 0x3f, 0x1e, 0xc6, 0x7f,
+        0x6a, 0x7f, 0xff, 0x23, 0xc3, 0xf5, 0x5f, 0x08, 0x82, 0x20, 0x08, 0x82, 0x20, 0x08, 0x82, 0x20,
+        0x08, 0x12, 0x8d, 0xff, 0x01, 0xe8, 0xf1, 0xe2, 0x42, 0x00, 0x40, 0x01, 0x00
+    };
+
+    // prepare pax-header tar
+    ASSERT_EQ(0, ErofsTest::inflate(src_path, const_cast<unsigned char*>(tar_zipped), sizeof(tar_zipped)));
+
+    // create device
+    auto src_file = host_fs->open(src_path.c_str(), O_RDONLY, 0666);
+    ASSERT_NE(nullptr, src_file);
+    DEFER(delete src_file);
+    auto fmeta = host_fs->open(fn_idx.c_str(), O_RDWR | O_CREAT | O_TRUNC, S_IRWXU);
+    auto findex = host_fs->open(fn_meta.c_str(), O_RDWR | O_CREAT | O_TRUNC, S_IRWXU);
+    LSMT::WarpFileArgs args(findex, fmeta, src_file);
+    args.virtual_size = IMAGE_SIZE;
+    auto wrap_file = create_warpfile(args, false);
+    ASSERT_NE(wrap_file, nullptr);
+
+    // create erofs image
+    auto tar = new LibErofs(wrap_file, 4096, true);
+    ASSERT_EQ(0, tar->extract_tar(src_file, true, true));
+    delete tar;
+
+    // setup erofs fs
+    auto erofs_fs = create_erofs_fs(wrap_file, 4096);
+    ASSERT_NE(erofs_fs, nullptr);
+    DEFER(delete erofs_fs);
+
+    // traverse the fs tree
+    std::string res;
+    std::string std_res = "sha256:4d7ad1fb36abd862a7caa9da01233aed7c762bbb8d900dc5baf60c5b1ddd8496";
+    std::vector<string> items;
+    items.emplace_back("/");
+    while (!items.empty()) {
+        std::string tmp = items.front();
+        struct stat st;
+
+        items.erase(items.begin());
+        res += tmp;
+        ASSERT_EQ(0, erofs_fs->stat(tmp.c_str(), &st));
+        if (S_ISDIR(st.st_mode)) {
+            auto dir = erofs_fs->opendir(tmp.c_str());
+            while (dir->next()) {
+                dirent *dent = dir->get();
+                items.emplace_back(tmp + "/" + dent->d_name);
+            }
+            dir->closedir();
+            delete dir;
+        }
+    }
+
+    auto sha256_f = host_fs->open(sha256_path.c_str(), O_RDWR | O_CREAT | O_TRUNC);
+    ASSERT_NE(sha256_f, nullptr);
+    sha256_f->pwrite(res.c_str(), res.size(), 0);
+    sha256_f->lseek(0, SEEK_SET);
+    auto sha256file = new_sha256_file(sha256_f, false);
+    ASSERT_STREQ(std_res.c_str(), sha256file->sha256_checksum().c_str());
+    delete sha256_f;
+    delete sha256file;
+}
+
 int main(int argc, char **argv) {
 
     ::testing::InitGoogleTest(&argc, argv);