deps: upgrade libuv to 1.20.0

Notable changes:
- uv_fs_copyfile() adds support for copy-on-write behavior.
- uv_relative_path() now uses the long directory name
  for handle->dirw.
- File operations on files > 2 GB on 32-bit platforms are
  working again.
- uv_fs_fchmod() on Windows works on files with the
  Archive flag cleared.

Backport-PR-URL: #24103
Fixes: #19170
Fixes: #19455
Fixes: #12803
PR-URL: #19758
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: cjihrig

Diff for: deps/uv/.mailmap

@@ -16,6 +16,7 @@ Frank Denis <github@pureftpd.org>
 Imran Iqbal <imrani@ca.ibm.com> <imran@imraniqbal.org>
 Isaac Z. Schlueter <i@izs.me>
 Jason Williams <necmon@yahoo.com>
+Jesse Gorzinski <jgorzinski@gmail.com>
 Justin Venus <justin.venus@gmail.com> <justin.venus@orbitz.com>
 Keno Fischer <kenof@stanford.edu> <kfischer+github@college.harvard.edu>
 Keno Fischer <kenof@stanford.edu> <kfischer@college.harvard.edu>

Diff for: deps/uv/AUTHORS

@@ -330,3 +330,5 @@ Mason X <me@masonx.ca>
 Jesse Gorzinski <jgorzinski@gmail.com>
 Ryuichi KAWAMATA <ryuichi.kawamata@dena.jp>
 Joyee Cheung <joyeec9h3@gmail.com>
+Michael Kilburn <crusader.mike@gmail.com>
+Ruslan Bekenev <furyinbox@gmail.com>

Diff for: deps/uv/ChangeLog

@@ -1,3 +1,53 @@
+2018.04.03, Version 1.20.0 (Stable), 0012178ee2b04d9e4a2c66c27cf8891ad8325ceb
+
+Changes since version 1.19.2:
+
+* unix,spawn: respect user stdio flags for new pipe (Jameson Nash)
+
+* Revert "Revert "unix,tcp: avoid marking server sockets connected"" (Jameson
+  Nash)
+
+* req: revisions to uv_req_t handling (Jameson Nash)
+
+* win: remove unnecessary initialization (cjihrig)
+
+* win: update uv_os_homedir() to use uv_os_getenv() (cjihrig)
+
+* test: fix tcp_oob test flakiness (Santiago Gimeno)
+
+* posix: fix uv__pollfds_del() for invalidated fd's (Jesse Gorzinski)
+
+* doc: README: add note on installing gyp (Jamie Davis)
+
+* unix: refactor uv_os_homedir to use uv_os_getenv (Santiago Gimeno)
+
+* unix: fix several instances of lost errno (Michael Kilburn)
+
+* win,tty: update several TODO comments (Ruslan Bekenev)
+
+* unix: add UV_FS_COPYFILE_FICLONE support (cjihrig)
+
+* test: fix connect_unspecified (Santiago Gimeno)
+
+* unix,win: add UV_FS_COPYFILE_FICLONE_FORCE support (cjihrig)
+
+* win: use long directory name for handle->dirw (Nicholas Vavilov)
+
+* build: build with -D_FILE_OFFSET_BITS=64 again (Ben Noordhuis)
+
+* win, fs: fix uv_fs_unlink for +R -A files (Bartosz Sosnowski)
+
+* win, fs: use FILE_WRITE_ATTRIBUTES when opening files (Bartosz Sosnowski)
+
+* unix: use __PASE__ on IBM i platforms (Jesse Gorzinski)
+
+* test,freebsd: fix flaky poll tests (Santiago Gimeno)
+
+* test: increase connection timeout to 1 second (jBarz)
+
+* win,tcp: handle canceled connect with ECANCELED (Jameson Nash)
+
+
 2018.02.22, Version 1.19.2 (Stable), c5afc37e2a8a70d8ab0da8dac10b77ba78c0488c
 
 Changes since version 1.19.1:

Diff for: deps/uv/README.md

@@ -169,6 +169,12 @@ $ make check
 $ make install
 ```
 
+To build with GYP, first run:
+
+```bash
+$ git clone https://chromium.googlesource.com/external/gyp build/gyp
+```
+
 ### Windows
 
 Prerequisites:

Diff for: deps/uv/checksparse.sh

@@ -184,7 +184,7 @@ AIX)
            src/unix/aix.c"
   ;;
 OS400)
-  SPARSE_FLAGS="$SPARSE_FLAGS -D_PASE=1"
+  SPARSE_FLAGS="$SPARSE_FLAGS -D__PASE__=1"
   SOURCES="$SOURCES
            src/unix/aix-common.c
            src/unix/ibmi.c

Diff for: deps/uv/configure.ac

@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.19.2], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.20.0], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])

Diff for: deps/uv/docs/src/fs.rst

@@ -249,6 +249,12 @@ API
     - `UV_FS_COPYFILE_EXCL`: If present, `uv_fs_copyfile()` will fail with
       `UV_EEXIST` if the destination path already exists. The default behavior
       is to overwrite the destination if it exists.
+    - `UV_FS_COPYFILE_FICLONE`: If present, `uv_fs_copyfile()` will attempt to
+      create a copy-on-write reflink. If the underlying platform does not
+      support copy-on-write, then a fallback copy mechanism is used.
+    - `UV_FS_COPYFILE_FICLONE_FORCE`: If present, `uv_fs_copyfile()` will
+      attempt to create a copy-on-write reflink. If the underlying platform does
+      not support copy-on-write, then an error is returned.
 
     .. warning::
         If the destination path is created, but an error occurs while copying
@@ -258,6 +264,9 @@ API
 
     .. versionadded:: 1.14.0
 
+    .. versionchanged:: 1.20.0 `UV_FS_COPYFILE_FICLONE` and
+        `UV_FS_COPYFILE_FICLONE_FORCE` are supported.
+
 .. c:function:: int uv_fs_sendfile(uv_loop_t* loop, uv_fs_t* req, uv_file out_fd, uv_file in_fd, int64_t in_offset, size_t length, uv_fs_cb cb)
 
     Limited equivalent to :man:`sendfile(2)`.

Diff for: deps/uv/include/uv-unix.h

@@ -48,7 +48,7 @@
 # include "uv-linux.h"
 #elif defined (__MVS__)
 # include "uv-os390.h"
-#elif defined(_PASE)
+#elif defined(__PASE__)
 # include "uv-posix.h"
 #elif defined(_AIX)
 # include "uv-aix.h"

Diff for: deps/uv/include/uv-version.h

@@ -31,8 +31,8 @@
  */
 
 #define UV_VERSION_MAJOR 1
-#define UV_VERSION_MINOR 19
-#define UV_VERSION_PATCH 2
+#define UV_VERSION_MINOR 20
+#define UV_VERSION_PATCH 0
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
 

Diff for: deps/uv/include/uv.h

@@ -378,8 +378,7 @@ UV_EXTERN const char* uv_err_name(int err);
   /* read-only */                                                             \
   uv_req_type type;                                                           \
   /* private */                                                               \
-  void* active_queue[2];                                                      \
-  void* reserved[4];                                                          \
+  void* reserved[6];                                                          \
   UV_REQ_PRIVATE_FIELDS                                                       \
 
 /* Abstract base class of all requests. */
@@ -1191,6 +1190,18 @@ UV_EXTERN int uv_fs_write(uv_loop_t* loop,
  */
 #define UV_FS_COPYFILE_EXCL   0x0001
 
+/*
+ * This flag can be used with uv_fs_copyfile() to attempt to create a reflink.
+ * If copy-on-write is not supported, a fallback copy mechanism is used.
+ */
+#define UV_FS_COPYFILE_FICLONE 0x0002
+
+/*
+ * This flag can be used with uv_fs_copyfile() to attempt to create a reflink.
+ * If copy-on-write is not supported, an error is returned.
+ */
+#define UV_FS_COPYFILE_FICLONE_FORCE 0x0004
+
 UV_EXTERN int uv_fs_copyfile(uv_loop_t* loop,
                              uv_fs_t* req,
                              const char* path,
@@ -1531,7 +1542,10 @@ struct uv_loop_s {
   /* Loop reference counting. */
   unsigned int active_handles;
   void* handle_queue[2];
-  void* active_reqs[2];
+  union {
+    void* unused[2];
+    unsigned int count;
+  } active_reqs;
   /* Internal flag to signal loop stop. */
   unsigned int stop_flag;
   UV_LOOP_PRIVATE_FIELDS

Diff for: deps/uv/src/unix/core.c

@@ -536,7 +536,7 @@ int uv__close_nocheckstdio(int fd) {
 int uv__close(int fd) {
   assert(fd > STDERR_FILENO);  /* Catch stdio close bugs. */
 #if defined(__MVS__)
-  epoll_file_close(fd);
+  SAVE_ERRNO(epoll_file_close(fd));
 #endif
   return uv__close_nocheckstdio(fd);
 }
@@ -1048,29 +1048,16 @@ int uv__dup2_cloexec(int oldfd, int newfd) {
 
 int uv_os_homedir(char* buffer, size_t* size) {
   uv_passwd_t pwd;
-  char* buf;
   size_t len;
   int r;
 
-  if (buffer == NULL || size == NULL || *size == 0)
-    return UV_EINVAL;
-
-  /* Check if the HOME environment variable is set first */
-  buf = getenv("HOME");
-
-  if (buf != NULL) {
-    len = strlen(buf);
+  /* Check if the HOME environment variable is set first. The task of
+     performing input validation on buffer and size is taken care of by
+     uv_os_getenv(). */
+  r = uv_os_getenv("HOME", buffer, size);
 
-    if (len >= *size) {
-      *size = len + 1;
-      return UV_ENOBUFS;
-    }
-
-    memcpy(buffer, buf, len + 1);
-    *size = len;
-
-    return 0;
-  }
+  if (r != UV_ENOENT)
+    return r;
 
   /* HOME is not set, so call uv__getpwuid_r() */
   r = uv__getpwuid_r(&pwd);

Diff for: deps/uv/src/unix/fs.c

@@ -62,6 +62,9 @@
 
 #if defined(__APPLE__)
 # include <copyfile.h>
+#elif defined(__linux__) && !defined(FICLONE)
+# include <sys/ioctl.h>
+# define FICLONE _IOW(0x94, 9, int)
 #endif
 
 #define INIT(subtype)                                                         \
@@ -790,6 +793,19 @@ static ssize_t uv__fs_copyfile(uv_fs_t* req) {
   if (req->flags & UV_FS_COPYFILE_EXCL)
     flags |= COPYFILE_EXCL;
 
+#ifdef COPYFILE_CLONE
+  if (req->flags & UV_FS_COPYFILE_FICLONE)
+    flags |= COPYFILE_CLONE;
+#endif
+
+  if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
+#ifdef COPYFILE_CLONE_FORCE
+    flags |= COPYFILE_CLONE_FORCE;
+#else
+    return UV_ENOSYS;
+#endif
+  }
+
   return copyfile(req->path, req->new_path, NULL, flags);
 #else
   uv_fs_t fs_req;
@@ -842,6 +858,29 @@ static ssize_t uv__fs_copyfile(uv_fs_t* req) {
     goto out;
   }
 
+#ifdef FICLONE
+  if (req->flags & UV_FS_COPYFILE_FICLONE ||
+      req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
+    if (ioctl(dstfd, FICLONE, srcfd) == -1) {
+      /* If an error occurred that the sendfile fallback also won't handle, or
+         this is a force clone then exit. Otherwise, fall through to try using
+         sendfile(). */
+      if ((errno != ENOTTY && errno != EOPNOTSUPP && errno != EXDEV) ||
+          req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
+        err = -errno;
+        goto out;
+      }
+    } else {
+      goto out;
+    }
+  }
+#else
+  if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
+    err = UV_ENOSYS;
+    goto out;
+  }
+#endif
+
   bytes_to_send = statsbuf.st_size;
   in_offset = 0;
   while (bytes_to_send != 0) {
@@ -1504,8 +1543,11 @@ int uv_fs_copyfile(uv_loop_t* loop,
                    uv_fs_cb cb) {
   INIT(COPYFILE);
 
-  if (flags & ~UV_FS_COPYFILE_EXCL)
+  if (flags & ~(UV_FS_COPYFILE_EXCL |
+                UV_FS_COPYFILE_FICLONE |
+                UV_FS_COPYFILE_FICLONE_FORCE)) {
     return UV_EINVAL;
+  }
 
   PATH2;
   req->flags = flags;

Diff for: deps/uv/src/unix/internal.h

@@ -190,7 +190,7 @@ int uv__cloexec_ioctl(int fd, int set);
 int uv__cloexec_fcntl(int fd, int set);
 int uv__nonblock_ioctl(int fd, int set);
 int uv__nonblock_fcntl(int fd, int set);
-int uv__close(int fd);
+int uv__close(int fd); /* preserves errno */
 int uv__close_nocheckstdio(int fd);
 int uv__socket(int domain, int type, int protocol);
 int uv__dup(int fd);

Diff for: deps/uv/src/unix/loop.c

@@ -38,13 +38,14 @@ int uv_loop_init(uv_loop_t* loop) {
 
   heap_init((struct heap*) &loop->timer_heap);
   QUEUE_INIT(&loop->wq);
-  QUEUE_INIT(&loop->active_reqs);
   QUEUE_INIT(&loop->idle_handles);
   QUEUE_INIT(&loop->async_handles);
   QUEUE_INIT(&loop->check_handles);
   QUEUE_INIT(&loop->prepare_handles);
   QUEUE_INIT(&loop->handle_queue);
 
+  loop->active_handles = 0;
+  loop->active_reqs.count = 0;
   loop->nfds = 0;
   loop->watchers = NULL;
   loop->nwatchers = 0;

Diff for: deps/uv/src/unix/posix-poll.c

@@ -107,15 +107,25 @@ static void uv__pollfds_add(uv_loop_t* loop, uv__io_t* w) {
 static void uv__pollfds_del(uv_loop_t* loop, int fd) {
   size_t i;
   assert(!loop->poll_fds_iterating);
-  for (i = 0; i < loop->poll_fds_used; ++i) {
+  for (i = 0; i < loop->poll_fds_used;) {
     if (loop->poll_fds[i].fd == fd) {
       /* swap to last position and remove */
       --loop->poll_fds_used;
       uv__pollfds_swap(loop, i, loop->poll_fds_used);
       loop->poll_fds[loop->poll_fds_used].fd = -1;
       loop->poll_fds[loop->poll_fds_used].events = 0;
       loop->poll_fds[loop->poll_fds_used].revents = 0;
-      return;
+      /* This method is called with an fd of -1 to purge the invalidated fds,
+       * so we may possibly have multiples to remove.
+       */
+      if (-1 != fd)
+        return;
+    } else {
+      /* We must only increment the loop counter when the fds do not match.
+       * Otherwise, when we are purging an invalidated fd, the value just
+       * swapped here from the previous end of the array will be skipped.
+       */
+       ++i;
     }
   }
 }

Diff for: deps/uv/src/unix/process.c

@@ -223,8 +223,7 @@ static int uv__process_init_stdio(uv_stdio_container_t* container, int fds[2]) {
 
 
 static int uv__process_open_stream(uv_stdio_container_t* container,
-                                   int pipefds[2],
-                                   int writable) {
+                                   int pipefds[2]) {
   int flags;
   int err;
 
@@ -238,13 +237,11 @@ static int uv__process_open_stream(uv_stdio_container_t* container,
   pipefds[1] = -1;
   uv__nonblock(pipefds[0], 1);
 
-  if (container->data.stream->type == UV_NAMED_PIPE &&
-      ((uv_pipe_t*)container->data.stream)->ipc)
-    flags = UV_STREAM_READABLE | UV_STREAM_WRITABLE;
-  else if (writable)
-    flags = UV_STREAM_WRITABLE;
-  else
-    flags = UV_STREAM_READABLE;
+  flags = 0;
+  if (container->flags & UV_WRITABLE_PIPE)
+    flags |= UV_STREAM_READABLE;
+  if (container->flags & UV_READABLE_PIPE)
+    flags |= UV_STREAM_WRITABLE;
 
   return uv__stream_open(container->data.stream, pipefds[0], flags);
 }
@@ -533,7 +530,7 @@ int uv_spawn(uv_loop_t* loop,
   uv__close_nocheckstdio(signal_pipe[0]);
 
   for (i = 0; i < options->stdio_count; i++) {
-    err = uv__process_open_stream(options->stdio + i, pipes[i], i == 0);
+    err = uv__process_open_stream(options->stdio + i, pipes[i]);
     if (err == 0)
       continue;