diff --git a/osufs/.gitignore b/osufs/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..c545112057ddf11017534ed98cc531151a32c3f7
--- /dev/null
+++ b/osufs/.gitignore
@@ -0,0 +1 @@
+xcuserdata/
diff --git a/osufs/osufs.xcodeproj/project.pbxproj b/osufs/osufs.xcodeproj/project.pbxproj
new file mode 100644
index 0000000000000000000000000000000000000000..db59c62112972010df62551813f09ad883fa696b
--- /dev/null
+++ b/osufs/osufs.xcodeproj/project.pbxproj
@@ -0,0 +1,282 @@
+// !$*UTF8*$!
+{
+ archiveVersion = 1;
+ classes = {
+ };
+ objectVersion = 48;
+ objects = {
+
+/* Begin PBXBuildFile section */
+ 2012336B1FCD4FC400FCBFC8 /* main.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 201233691FCD4FC400FCBFC8 /* main.cpp */; };
+ 2012336E1FCD501200FCBFC8 /* osufs.c in Sources */ = {isa = PBXBuildFile; fileRef = 2012336C1FCD501200FCBFC8 /* osufs.c */; };
+ 201233711FCD581200FCBFC8 /* blkio.c in Sources */ = {isa = PBXBuildFile; fileRef = 2012336F1FCD581200FCBFC8 /* blkio.c */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+ 2012335D1FCD4F4400FCBFC8 /* CopyFiles */ = {
+ isa = PBXCopyFilesBuildPhase;
+ buildActionMask = 2147483647;
+ dstPath = /usr/share/man/man1/;
+ dstSubfolderSpec = 0;
+ files = (
+ );
+ runOnlyForDeploymentPostprocessing = 1;
+ };
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+ 2012335F1FCD4F4400FCBFC8 /* osufs */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = osufs; sourceTree = BUILT_PRODUCTS_DIR; };
+ 201233691FCD4FC400FCBFC8 /* main.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = main.cpp; sourceTree = "<group>"; };
+ 2012336C1FCD501200FCBFC8 /* osufs.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = osufs.c; sourceTree = "<group>"; };
+ 2012336D1FCD501200FCBFC8 /* osufs.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = osufs.h; sourceTree = "<group>"; };
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+ 201233701FCD581200FCBFC8 /* blkio.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = blkio.h; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+ 2012335C1FCD4F4400FCBFC8 /* Frameworks */ = {
+ isa = PBXFrameworksBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+ 201233561FCD4F4300FCBFC8 = {
+ isa = PBXGroup;
+ children = (
+ 201233611FCD4F4400FCBFC8 /* osufs */,
+ 201233601FCD4F4400FCBFC8 /* Products */,
+ );
+ sourceTree = "<group>";
+ };
+ 201233601FCD4F4400FCBFC8 /* Products */ = {
+ isa = PBXGroup;
+ children = (
+ 2012335F1FCD4F4400FCBFC8 /* osufs */,
+ );
+ name = Products;
+ sourceTree = "<group>";
+ };
+ 201233611FCD4F4400FCBFC8 /* osufs */ = {
+ isa = PBXGroup;
+ children = (
+ 201233691FCD4FC400FCBFC8 /* main.cpp */,
+ 2012336C1FCD501200FCBFC8 /* osufs.c */,
+ 2012336D1FCD501200FCBFC8 /* osufs.h */,
+ 2012336F1FCD581200FCBFC8 /* blkio.c */,
+ 201233701FCD581200FCBFC8 /* blkio.h */,
+ );
+ path = osufs;
+ sourceTree = "<group>";
+ };
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+ 2012335E1FCD4F4400FCBFC8 /* osufs */ = {
+ isa = PBXNativeTarget;
+ buildConfigurationList = 201233661FCD4F4400FCBFC8 /* Build configuration list for PBXNativeTarget "osufs" */;
+ buildPhases = (
+ 2012335B1FCD4F4400FCBFC8 /* Sources */,
+ 2012335C1FCD4F4400FCBFC8 /* Frameworks */,
+ 2012335D1FCD4F4400FCBFC8 /* CopyFiles */,
+ );
+ buildRules = (
+ );
+ dependencies = (
+ );
+ name = osufs;
+ productName = osufs;
+ productReference = 2012335F1FCD4F4400FCBFC8 /* osufs */;
+ productType = "com.apple.product-type.tool";
+ };
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+ 201233571FCD4F4300FCBFC8 /* Project object */ = {
+ isa = PBXProject;
+ attributes = {
+ LastUpgradeCheck = 0910;
+ ORGANIZATIONNAME = "Fang Lu";
+ TargetAttributes = {
+ 2012335E1FCD4F4400FCBFC8 = {
+ CreatedOnToolsVersion = 9.1;
+ ProvisioningStyle = Automatic;
+ };
+ };
+ };
+ buildConfigurationList = 2012335A1FCD4F4300FCBFC8 /* Build configuration list for PBXProject "osufs" */;
+ compatibilityVersion = "Xcode 8.0";
+ developmentRegion = en;
+ hasScannedForEncodings = 0;
+ knownRegions = (
+ en,
+ );
+ mainGroup = 201233561FCD4F4300FCBFC8;
+ productRefGroup = 201233601FCD4F4400FCBFC8 /* Products */;
+ projectDirPath = "";
+ projectRoot = "";
+ targets = (
+ 2012335E1FCD4F4400FCBFC8 /* osufs */,
+ );
+ };
+/* End PBXProject section */
+
+/* Begin PBXSourcesBuildPhase section */
+ 2012335B1FCD4F4400FCBFC8 /* Sources */ = {
+ isa = PBXSourcesBuildPhase;
+ buildActionMask = 2147483647;
+ files = (
+ 201233711FCD581200FCBFC8 /* blkio.c in Sources */,
+ 2012336E1FCD501200FCBFC8 /* osufs.c in Sources */,
+ 2012336B1FCD4FC400FCBFC8 /* main.cpp in Sources */,
+ );
+ runOnlyForDeploymentPostprocessing = 0;
+ };
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+ 201233641FCD4F4400FCBFC8 /* Debug */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ ALWAYS_SEARCH_USER_PATHS = NO;
+ CLANG_ANALYZER_NONNULL = YES;
+ CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+ CLANG_CXX_LANGUAGE_STANDARD = "gnu++98";
+ CLANG_CXX_LIBRARY = "libc++";
+ CLANG_ENABLE_OBJC_ARC = YES;
+ CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+ CLANG_WARN_BOOL_CONVERSION = YES;
+ CLANG_WARN_COMMA = YES;
+ CLANG_WARN_CONSTANT_CONVERSION = YES;
+ CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+ CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+ CLANG_WARN_EMPTY_BODY = YES;
+ CLANG_WARN_ENUM_CONVERSION = YES;
+ CLANG_WARN_INFINITE_RECURSION = YES;
+ CLANG_WARN_INT_CONVERSION = YES;
+ CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+ CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+ CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+ CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+ CLANG_WARN_STRICT_PROTOTYPES = YES;
+ CLANG_WARN_SUSPICIOUS_MOVE = YES;
+ CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+ CLANG_WARN_UNREACHABLE_CODE = YES;
+ CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+ CODE_SIGN_IDENTITY = "-";
+ COPY_PHASE_STRIP = NO;
+ DEBUG_INFORMATION_FORMAT = dwarf;
+ ENABLE_STRICT_OBJC_MSGSEND = YES;
+ ENABLE_TESTABILITY = YES;
+ GCC_C_LANGUAGE_STANDARD = gnu99;
+ GCC_DYNAMIC_NO_PIC = NO;
+ GCC_NO_COMMON_BLOCKS = YES;
+ GCC_OPTIMIZATION_LEVEL = 0;
+ GCC_PREPROCESSOR_DEFINITIONS = (
+ "DEBUG=1",
+ "$(inherited)",
+ );
+ GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+ GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+ GCC_WARN_UNDECLARED_SELECTOR = YES;
+ GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+ GCC_WARN_UNUSED_FUNCTION = YES;
+ GCC_WARN_UNUSED_VARIABLE = YES;
+ MACOSX_DEPLOYMENT_TARGET = 10.12;
+ MTL_ENABLE_DEBUG_INFO = YES;
+ ONLY_ACTIVE_ARCH = YES;
+ SDKROOT = macosx;
+ };
+ name = Debug;
+ };
+ 201233651FCD4F4400FCBFC8 /* Release */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ ALWAYS_SEARCH_USER_PATHS = NO;
+ CLANG_ANALYZER_NONNULL = YES;
+ CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+ CLANG_CXX_LANGUAGE_STANDARD = "gnu++98";
+ CLANG_CXX_LIBRARY = "libc++";
+ CLANG_ENABLE_OBJC_ARC = YES;
+ CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+ CLANG_WARN_BOOL_CONVERSION = YES;
+ CLANG_WARN_COMMA = YES;
+ CLANG_WARN_CONSTANT_CONVERSION = YES;
+ CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+ CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+ CLANG_WARN_EMPTY_BODY = YES;
+ CLANG_WARN_ENUM_CONVERSION = YES;
+ CLANG_WARN_INFINITE_RECURSION = YES;
+ CLANG_WARN_INT_CONVERSION = YES;
+ CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+ CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+ CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+ CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+ CLANG_WARN_STRICT_PROTOTYPES = YES;
+ CLANG_WARN_SUSPICIOUS_MOVE = YES;
+ CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+ CLANG_WARN_UNREACHABLE_CODE = YES;
+ CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+ CODE_SIGN_IDENTITY = "-";
+ COPY_PHASE_STRIP = NO;
+ DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+ ENABLE_NS_ASSERTIONS = NO;
+ ENABLE_STRICT_OBJC_MSGSEND = YES;
+ GCC_C_LANGUAGE_STANDARD = gnu99;
+ GCC_NO_COMMON_BLOCKS = YES;
+ GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+ GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+ GCC_WARN_UNDECLARED_SELECTOR = YES;
+ GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+ GCC_WARN_UNUSED_FUNCTION = YES;
+ GCC_WARN_UNUSED_VARIABLE = YES;
+ MACOSX_DEPLOYMENT_TARGET = 10.12;
+ MTL_ENABLE_DEBUG_INFO = NO;
+ SDKROOT = macosx;
+ };
+ name = Release;
+ };
+ 201233671FCD4F4400FCBFC8 /* Debug */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ CODE_SIGN_STYLE = Automatic;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ };
+ name = Debug;
+ };
+ 201233681FCD4F4400FCBFC8 /* Release */ = {
+ isa = XCBuildConfiguration;
+ buildSettings = {
+ CODE_SIGN_STYLE = Automatic;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ };
+ name = Release;
+ };
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+ 2012335A1FCD4F4300FCBFC8 /* Build configuration list for PBXProject "osufs" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 201233641FCD4F4400FCBFC8 /* Debug */,
+ 201233651FCD4F4400FCBFC8 /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+ 201233661FCD4F4400FCBFC8 /* Build configuration list for PBXNativeTarget "osufs" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 201233671FCD4F4400FCBFC8 /* Debug */,
+ 201233681FCD4F4400FCBFC8 /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+/* End XCConfigurationList section */
+ };
+ rootObject = 201233571FCD4F4300FCBFC8 /* Project object */;
+}
diff --git a/osufs/osufs.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/osufs/osufs.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000000000000000000000000000000000000..2d1534d9fcaf91484e049c9be6ed8a8f8c75cde7
--- /dev/null
+++ b/osufs/osufs.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+ version = "1.0">
+ <FileRef
+ location = "self:osufs.xcodeproj">
+ </FileRef>
+</Workspace>
diff --git a/osufs/osufs/blkio.c b/osufs/osufs/blkio.c
new file mode 100644
index 0000000000000000000000000000000000000000..a7ba77be458df3221b15fccd2504d4199830c7e1
--- /dev/null
+++ b/osufs/osufs/blkio.c
@@ -0,0 +1,110 @@
+//
+// blkio.c
+// osufs
+//
+// Created by Fang Lu on 11/28/17.
+// Copyright © 2017 Fang Lu. All rights reserved.
+//
+
+#include "blkio.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#ifdef _WIN32
+
+#error "Win32 NOT supported"
+
+#elif __APPLE__
+
+#include <sys/disk.h>
+
+uint64_t blkio_size(uint32_t dev) {
+ uint64_t sector_count = 0;
+ // Query the number of sectors on the disk
+ if (ioctl(dev, DKIOCGETBLOCKCOUNT, §or_count) == -1) {
+ fprintf(stderr, "Failed to get block count\n");
+ return 0;
+ }
+ fprintf(stderr, "IOCTL: block count is %llu\n", sector_count);
+
+ uint32_t sector_size = 0;
+ // Query the size of each sector
+ if (ioctl(dev, DKIOCGETBLOCKSIZE, §or_size) == -1) {
+ fprintf(stderr, "Failed to get block size\n");
+ return 0;
+ }
+ fprintf(stderr, "IOCTL: block size is %u\n", sector_size);
+
+ return sector_count * sector_size;
+}
+
+#elif __linux__
+
+#include <linux/fs.h>
+
+uint64_t blkio_size(uint32_t dev) {
+ uint64_t block_size = 0;
+ if (ioctl(dev, BLKGETSIZE, &block_size) == -1) {
+ fprintf(stderr, "Failed to get device size\n");
+ return 0; // Failed
+ }
+
+ return block_size;
+}
+
+#elif __unix__
+
+#error "Platform not supported"
+
+#elif defined(_POSIX_VERSION)
+
+#error "Platform not supported"
+
+#else
+
+#error "Unknown compiler"
+
+#endif
+
+
+mdev *blkio_open(const char *filename) {
+ uint32_t fd = open(filename, O_RDWR);
+ if (fd == -1) {
+ fprintf(stderr, "Failed to open file %s\n", filename);
+ fprintf(stderr, "%s (%d)\n", strerror(errno), errno);
+ return NULL;
+ }
+ uint64_t fsize = blkio_size(fd);
+ printf("File opened (fd=%u). Device size is: %llu\n", fd, fsize);
+ if (!fsize) {
+ return NULL;
+ }
+ void *base = mmap(NULL, fsize, PROT_READ,
+ MAP_SHARED|MAP_FILE, fd, 0);
+ if (base == MAP_FAILED) {
+ fprintf(stderr, "MMap failed.\n");
+ fprintf(stderr, "%s (%d)\n", strerror(errno), errno);
+ return NULL;
+ }
+ if (close(fd) == -1) {
+ fprintf(stderr, "Failed to close file\n");
+ }
+ mdev *ret = malloc(sizeof(mdev));
+ ret->base = base;
+ ret->len = fsize;
+ ret->fd = fd;
+ return ret;
+}
+
+void blkio_close(mdev *dev) {
+ munmap(dev->base, dev->len);
+ close(dev->fd);
+ free(dev);
+}
+
diff --git a/osufs/osufs/blkio.h b/osufs/osufs/blkio.h
new file mode 100644
index 0000000000000000000000000000000000000000..9e87fb462c951b675a9dd3bf9c4e4ab3d86c76ba
--- /dev/null
+++ b/osufs/osufs/blkio.h
@@ -0,0 +1,31 @@
+//
+// blkio.h
+// osufs
+//
+// Created by Fang Lu on 11/28/17.
+// Copyright © 2017 Fang Lu. All rights reserved.
+//
+
+#ifndef blkio_h
+#define blkio_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <inttypes.h>
+
+typedef struct mdev_t {
+ void *base;
+ uint64_t len;
+ uint32_t fd;
+} mdev;
+
+mdev *blkio_open(const char *filename);
+void blkio_close(mdev *dev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* blkio_h */
diff --git a/osufs/osufs/main.cpp b/osufs/osufs/main.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c219495ff2b76a1ff05fe6c3810f47f561eec527
--- /dev/null
+++ b/osufs/osufs/main.cpp
@@ -0,0 +1,38 @@
+//
+// main
+// osufs
+//
+// Created by Fang Lu on 11/28/17.
+// Copyright © 2017 Fang Lu. All rights reserved.
+//
+
+#include <stdio.h>
+
+#include "blkio.h"
+
+int main(int argc, char *argv[]) {
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s device file\n", argv[0]);
+ return 1;
+ }
+
+ mdev *dev = blkio_open(argv[1]);
+ if (!dev) {
+ fprintf(stderr, "Failed to open device file\n");
+ return 1;
+ }
+
+ printf("Device capacity is: %llu MiB\n", (dev->len >> 20));
+
+ printf("Dumping the first sector...\n");
+ unsigned char *ptr = (unsigned char *)dev->base;
+ for (int i=0; i<512; i++) {
+ printf("%x ", ptr[i]);
+ if (i&0x7)
+ printf("\n");
+ }
+
+ blkio_close(dev);
+
+ return 0;
+}
diff --git a/osufs/osufs/osufs.c b/osufs/osufs/osufs.c
new file mode 100644
index 0000000000000000000000000000000000000000..66cc943e0676fbb1e2ca5a40251653d0d2bab7b3
--- /dev/null
+++ b/osufs/osufs/osufs.c
@@ -0,0 +1,9 @@
+//
+// osufs.c
+// osufs
+//
+// Created by Fang Lu on 11/28/17.
+// Copyright © 2017 Fang Lu. All rights reserved.
+//
+
+#include "osufs.h"
diff --git a/osufs/osufs/osufs.h b/osufs/osufs/osufs.h
new file mode 100644
index 0000000000000000000000000000000000000000..a3e445d92dfe4730a0c1af744bccca7d92806b3b
--- /dev/null
+++ b/osufs/osufs/osufs.h
@@ -0,0 +1,23 @@
+//
+// osufs.h
+// osufs
+//
+// Created by Fang Lu on 11/28/17.
+// Copyright © 2017 Fang Lu. All rights reserved.
+//
+
+#ifndef osufs_h
+#define osufs_h
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* osufs_h */