can we have the oposit of noah ?

CMakeLists.txt

@@ -1,13 +1,19 @@
 cmake_minimum_required(VERSION 3.7)
 
-project(noah VERSION 0.3.9)
+project(noah VERSION 0.5.1)
 
 configure_file(bin/noah.in ${PROJECT_SOURCE_DIR}/bin/noah @ONLY)
 configure_file(include/version.h.in ${PROJECT_SOURCE_DIR}/include/version.h)
 
+if (CMAKE_HOST_SYSTEM_VERSION VERSION_LESS 16.0.0)
+add_definitions("-DMACOS_PRE_16")
+endif()
+
+find_library(HYPERVISOR_FRAMEWORK Hypervisor)
+find_library(PTHREAD_LIBRARY pthread)
+
 set(CMAKE_C_FLAGS "-Wall -Wextra -Wno-unused-parameter -std=gnu11")
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 -g -fsanitize=address -fno-omit-frame-pointer")
-set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2")
 include_directories(include)
 
 add_executable(noah
@@ -33,10 +39,11 @@ add_executable(noah
   src/mm/shm.c
   src/ipc/sem.c
   )
-target_link_libraries(noah pthread "-framework Hypervisor")
+target_link_libraries(noah ${PTHREAD_LIBRARY} ${HYPERVISOR_FRAMEWORK})
 
 install(PROGRAMS bin/noah DESTINATION bin)
 install(TARGETS noah DESTINATION libexec)
+install(FILES man/noah.1 DESTINATION ${CMAKE_INSTALL_PREFIX}/man/man1)
 
 enable_testing()
 add_subdirectory(test)

HACKING.md

@@ -18,6 +18,15 @@ $ INSTALL_PREFIX/libexec/noah -m ROOT_PATH PATH_TO_INIT
 ```
 where `ROOT_PATH` is a path to the directory that is treated as the root mount point in the Linux box, and `PATH_TO_INIT` is a path to the first command to be run in the boot sequence, like `/bin/bash`.
 
+`noahstrap` helps you set up a Linux environment on your local machine.
+It retrieves a ready-to-use distro image from the Internet and extracts it to a specified directory.
+`noahstrap` is installed via homebrew.
+
+```console
+$ brew install linux-noah/noah/noahstrap
+$ noahstrap --help  # prints help message
+```
+
 ## Debugging
 
 There are several methods to debug `noah`.

README.md

@@ -1,19 +1,33 @@
-# Noah [![Build Status](http://noah-ci.idylls.jp/job/noah/badge/icon)](http://noah-ci.idylls.jp/job/noah/)
+# Noah
 
 Noah is a Darwin subsystem for Linux, or "Bash on Ubuntu on Mac OS X". Noah is implemented as a hypervisor that traps linux system calls and translates them into Darwin's system calls. Noah also has an interpreter of ELF files so that binary executables of Linux run directly and flawlessly without any modifications.
 
+__Noah is an experimental product__. Most Linux apps don't work well due to missing system calls. For the technical details, please refer to [its academic paper](https://dl.acm.org/doi/abs/10.1145/3381052.3381327). Currently, this repository is not actively maintained. It might not run on the latest macOS.
+
+<img src="https://github.com/linux-noah/noah/blob/master/images/screenshot.png" width="600">
+
 ## Quick Start
 
-Noah is installed via homebrew. On the first run, noah automatically downloads and installs a comprehensive linux environment in your home directory (by default, ubuntu 16.04 is installed in `~/.noah/tree`).
+Noah is installed via Homebrew or MacPorts. On the first run, noah automatically downloads and installs a comprehensive linux environment in your home directory (by default, ubuntu 16.04 is installed in `~/.noah/tree`).
+macOS Sierra or higher is required.
+
+### Homebrew
+
+```console
+$ brew install linux-noah/noah/noah
+$ noah
+```
+### MacPorts
 
-    $ brew tap linux-noah/noah
-    $ brew install noah
-    $ noah
+```console
+$ sudo port install noah
+$ noah
+```
 
 ## Hacking
 
 See [HACKING.md](HACKING.md).
 
 ## LICENSE
 
-Dual MITL/GPL, for all files without explicit notaiton.
+Dual MITL/GPL, for all files without explicit notation.

bin/noah.in

@@ -54,7 +54,7 @@ if ($> != 0) {
 
 my $init = "/bin/bash -i";
 if (@ARGV != 0) {
-  $init = "@ARGV";
+  $init = join(" ", map {"'$_'"} @ARGV);
 }
 
 my $opts = "";

include/linux/futex.h

@@ -92,4 +92,51 @@ struct linux_robust_list_head {
   l_uintptr_t			pending_list;
 };
 
+#define LINUX_PR_SET_PDEATHSIG                 1
+#define LINUX_PR_GET_PDEATHSIG                 2
+#define LINUX_PR_GET_DUMPABLE                  3
+#define LINUX_PR_SET_DUMPABLE                  4
+#define LINUX_PR_GET_UNALIGN                   5
+#define LINUX_PR_SET_UNALIGN                   6
+#define LINUX_PR_GET_KEEPCAPS                  7
+#define LINUX_PR_SET_KEEPCAPS                  8
+#define LINUX_PR_GET_FPEMU                     9
+#define LINUX_PR_SET_FPEMU                    10
+#define LINUX_PR_GET_FPEXC                    11
+#define LINUX_PR_SET_FPEXC                    12
+#define LINUX_PR_GET_TIMING                   13
+#define LINUX_PR_SET_TIMING                   14
+#define LINUX_PR_SET_NAME                     15
+#define LINUX_PR_GET_NAME                     16
+
+#define LINIX_PR_GET_ENDIAN                   19
+#define LINIX_PR_SET_ENDIAN                   20
+#define LINIX_PR_GET_SECCOMP                  21
+#define LINIX_PR_SET_SECCOMP                  22
+#define LINIX_PR_CAPBSET_READ                 23
+#define LINIX_PR_CAPBSET_DROP                 24
+#define LINIX_PR_GET_TSC                      25
+#define LINIX_PR_SET_TSC                      26
+#define LINIX_PR_GET_SECUREBITS               27
+#define LINIX_PR_SET_SECUREBITS               28
+#define LINIX_PR_SET_TIMERSLACK               29
+#define LINIX_PR_GET_TIMERSLACK               30
+#define LINIX_PR_TASK_PERF_EVENTS_DISABLE     31
+#define LINIX_PR_TASK_PERF_EVENTS_ENABLE      32
+#define LINIX_PR_MCE_KILL                     33
+#define LINIX_PR_MCE_KILL_GET                 34
+#define LINIX_PR_SET_MM                       35
+#define LINIX_PR_SET_CHILD_SUBREAPER          36
+#define LINIX_PR_GET_CHILD_SUBREAPER          37
+#define LINIX_PR_SET_NO_NEW_PRIVS             38
+#define LINIX_PR_GET_NO_NEW_PRIVS             39
+#define LINIX_PR_GET_TID_ADDRESS              40
+#define LINIX_PR_SET_THP_DISABLE              41
+#define LINIX_PR_GET_THP_DISABLE              42
+#define LINIX_PR_MPX_ENABLE_MANAGEMENT        43
+#define LINIX_PR_MPX_DISABLE_MANAGEMENT       44
+#define LINIX_PR_SET_FP_MODE                  45
+#define LINIX_PR_GET_FP_MODE                  46
+#define LINIX_PR_CAP_AMBIENT                  47
+
 #endif	/* !_LINUX_FUTEX_H */

include/linux/misc.h

@@ -80,6 +80,8 @@ struct l___sysctl_args
 
 #define	LINUX_RLIM_NLIMITS	10
 
+#define	LINUX_RLIM_INFINITY	(~0UL)
+
 struct l_rlimit {
   l_ulong		rlim_cur;
   l_ulong		rlim_max;

include/linux/time.h

@@ -50,6 +50,11 @@ struct l_timezone {
 
 typedef uint32_t l_clockid_t;
 
+struct l_itimerval {
+  struct l_timeval it_interval;
+  struct l_timeval it_value;
+};
+
 #define LINUX_CLOCK_REALTIME             0
 #define LINUX_CLOCK_MONOTONIC            1
 #define LINUX_CLOCK_PROCESS_CPUTIME_ID   2

include/noah.h

@@ -81,7 +81,7 @@ struct task {
 struct fdtable {
   int start; // First fd number of this table
   int size;  // Current table size expressed in number of bits
-  struct file *files;
+  struct file **files;
   uint64_t *open_fds;
   uint64_t *cloexec_fds;
 };

include/syscall.h

@@ -37,9 +37,9 @@
   SYSCALL(33, dup2)                             \
   SYSCALL(34, unimplemented)                    \
   SYSCALL(35, nanosleep)                        \
-  SYSCALL(36, unimplemented)                    \
+  SYSCALL(36, getitimer)                        \
   SYSCALL(37, alarm)                            \
-  SYSCALL(38, unimplemented)                    \
+  SYSCALL(38, setitimer)                        \
   SYSCALL(39, getpid)                           \
   SYSCALL(40, unimplemented)                    \
   SYSCALL(41, socket)                           \
@@ -134,7 +134,7 @@
   SYSCALL(130, rt_sigsuspend)                   \
   SYSCALL(131, sigaltstack)                     \
   SYSCALL(132, utime)                           \
-  SYSCALL(133, unimplemented)                   \
+  SYSCALL(133, mknod)                           \
   SYSCALL(134, uselib)                          \
   SYSCALL(135, unimplemented)                   \
   SYSCALL(136, unimplemented)                   \
@@ -260,7 +260,7 @@
   SYSCALL(256, unimplemented)                   \
   SYSCALL(257, openat)                          \
   SYSCALL(258, mkdirat)                         \
-  SYSCALL(259, unimplemented)                   \
+  SYSCALL(259, mknodat)                         \
   SYSCALL(260, fchownat)                        \
   SYSCALL(261, unimplemented)                   \
   SYSCALL(262, newfstatat)                      \

include/vmm.h

@@ -11,8 +11,8 @@
 
 struct vcpu_snapshot {
   uint64_t vcpu_reg[NR_X86_REG_LIST];
-  uint64_t vmcs[NR_VMCS_FIELD];
-  char fpu_states[512] __attribute__((aligned(16)));
+  uint64_t vmcs[NR_VMCS_FIELD_MASKED];
+  char fpu_states[2496] __attribute__((aligned(16)));
 };
 
 struct vmm_snapshot {

include/x86/specialreg.h

@@ -17,3 +17,6 @@
 #define MSR_TIME_STAMP_COUNTER 0x00000010
 #define MSR_KERNEL_GS_BASE     0xc0000102
 #define MSR_TSC_AUX            0xc0000103
+
+#define XCR0_SSE_STATE  0x00000002
+#define XCR0_AVX_STATE  0x00000004

include/x86/vm.h

@@ -18,13 +18,13 @@ typedef enum {
   PAGE_PML4E,
 } page_type_t;
 
-#define PAGE_SHIFT(page_type)            (12 + (page_type) * 9)
-#define PAGE_SIZE(page_type)             (1ULL << PAGE_SHIFT(page_type))
+#define PAGE_SHIFTOF(page_type)          (12 + (page_type) * 9)
+#define PAGE_SIZEOF(page_type)           (1ULL << PAGE_SHIFTOF(page_type))
 #define NR_PAGE_ENTRY                    512
 
 static inline int is_page_aligned(void *addr, page_type_t page)
 {
-  return ((uint64_t)addr & (PAGE_SIZE(page) - 1)) == 0;
+  return ((uint64_t)addr & (PAGE_SIZEOF(page) - 1)) == 0;
 }
 
 /* idt */