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libuv/src/unix/fs.c  view on Meta::CPAN


static ssize_t uv__fs_read(uv_fs_t* req) {
#if defined(__linux__)
  static int no_preadv;
#endif
  unsigned int iovmax;
  ssize_t result;

  iovmax = uv__getiovmax();
  if (req->nbufs > iovmax)
    req->nbufs = iovmax;

  if (req->off < 0) {
    if (req->nbufs == 1)
      result = read(req->file, req->bufs[0].base, req->bufs[0].len);
    else
      result = readv(req->file, (struct iovec*) req->bufs, req->nbufs);
  } else {
    if (req->nbufs == 1) {
      result = pread(req->file, req->bufs[0].base, req->bufs[0].len, req->off);
      goto done;
    }

#if HAVE_PREADV
    result = preadv(req->file, (struct iovec*) req->bufs, req->nbufs, req->off);
#else
# if defined(__linux__)
    if (no_preadv) retry:
# endif
    {
      result = pread(req->file, req->bufs[0].base, req->bufs[0].len, req->off);
    }
# if defined(__linux__)
    else {
      result = uv__preadv(req->file,
                          (struct iovec*)req->bufs,
                          req->nbufs,
                          req->off);
      if (result == -1 && errno == ENOSYS) {
        no_preadv = 1;
        goto retry;
      }
    }
# endif
#endif
  }

done:
  /* Early cleanup of bufs allocation, since we're done with it. */
  if (req->bufs != req->bufsml)
    uv__free(req->bufs);

  req->bufs = NULL;
  req->nbufs = 0;

#ifdef __PASE__
  /* PASE returns EOPNOTSUPP when reading a directory, convert to EISDIR */
  if (result == -1 && errno == EOPNOTSUPP) {
    struct stat buf;
    ssize_t rc;
    rc = fstat(req->file, &buf);
    if (rc == 0 && S_ISDIR(buf.st_mode)) {
      errno = EISDIR;
    }
  }
#endif

  return result;
}


#if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_8)
#define UV_CONST_DIRENT uv__dirent_t
#else
#define UV_CONST_DIRENT const uv__dirent_t
#endif


static int uv__fs_scandir_filter(UV_CONST_DIRENT* dent) {
  return strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0;
}


static int uv__fs_scandir_sort(UV_CONST_DIRENT** a, UV_CONST_DIRENT** b) {
  return strcmp((*a)->d_name, (*b)->d_name);
}


static ssize_t uv__fs_scandir(uv_fs_t* req) {
  uv__dirent_t** dents;
  int n;

  dents = NULL;
  n = scandir(req->path, &dents, uv__fs_scandir_filter, uv__fs_scandir_sort);

  /* NOTE: We will use nbufs as an index field */
  req->nbufs = 0;

  if (n == 0) {
    /* OS X still needs to deallocate some memory.
     * Memory was allocated using the system allocator, so use free() here.
     */
    free(dents);
    dents = NULL;
  } else if (n == -1) {
    return n;
  }

  req->ptr = dents;

  return n;
}

static int uv__fs_opendir(uv_fs_t* req) {
  uv_dir_t* dir;

  dir = uv__malloc(sizeof(*dir));
  if (dir == NULL)
    goto error;

  dir->dir = opendir(req->path);

libuv/src/unix/fs.c  view on Meta::CPAN

    dirent->type = uv__fs_get_dirent_type(res);
    ++dirent_idx;
  }

  return dirent_idx;

error:
  for (i = 0; i < dirent_idx; ++i) {
    uv__free((char*) dir->dirents[i].name);
    dir->dirents[i].name = NULL;
  }

  return -1;
}

static int uv__fs_closedir(uv_fs_t* req) {
  uv_dir_t* dir;

  dir = req->ptr;

  if (dir->dir != NULL) {
    closedir(dir->dir);
    dir->dir = NULL;
  }

  uv__free(req->ptr);
  req->ptr = NULL;
  return 0;
}

#if defined(_POSIX_PATH_MAX)
# define UV__FS_PATH_MAX _POSIX_PATH_MAX
#elif defined(PATH_MAX)
# define UV__FS_PATH_MAX PATH_MAX
#else
# define UV__FS_PATH_MAX_FALLBACK 8192
# define UV__FS_PATH_MAX UV__FS_PATH_MAX_FALLBACK
#endif

static ssize_t uv__fs_pathmax_size(const char* path) {
  ssize_t pathmax;

  pathmax = pathconf(path, _PC_PATH_MAX);

  if (pathmax == -1)
    pathmax = UV__FS_PATH_MAX;

  return pathmax;
}

static ssize_t uv__fs_readlink(uv_fs_t* req) {
  ssize_t maxlen;
  ssize_t len;
  char* buf;
  char* newbuf;

#if defined(UV__FS_PATH_MAX_FALLBACK)
  /* We may not have a real PATH_MAX.  Read size of link.  */
  struct stat st;
  int ret;
  ret = lstat(req->path, &st);
  if (ret != 0)
    return -1;
  if (!S_ISLNK(st.st_mode)) {
    errno = EINVAL;
    return -1;
  }

  maxlen = st.st_size;

  /* According to readlink(2) lstat can report st_size == 0
     for some symlinks, such as those in /proc or /sys.  */
  if (maxlen == 0)
    maxlen = uv__fs_pathmax_size(req->path);
#else
  maxlen = uv__fs_pathmax_size(req->path);
#endif

  buf = uv__malloc(maxlen);

  if (buf == NULL) {
    errno = ENOMEM;
    return -1;
  }

#if defined(__MVS__)
  len = os390_readlink(req->path, buf, maxlen);
#else
  len = readlink(req->path, buf, maxlen);
#endif

  if (len == -1) {
    uv__free(buf);
    return -1;
  }

  /* Uncommon case: resize to make room for the trailing nul byte. */
  if (len == maxlen) {
    newbuf = uv__realloc(buf, len + 1);

    if (newbuf == NULL) {
      uv__free(buf);
      return -1;
    }

    buf = newbuf;
  }

  buf[len] = '\0';
  req->ptr = buf;

  return 0;
}

static ssize_t uv__fs_realpath(uv_fs_t* req) {
  char* buf;

#if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L
  buf = realpath(req->path, NULL);
  if (buf == NULL)
    return -1;

libuv/src/unix/fs.c  view on Meta::CPAN

  } else {
    if (req->nbufs == 1) {
      r = pwrite(req->file, req->bufs[0].base, req->bufs[0].len, req->off);
      goto done;
    }
#if HAVE_PREADV
    r = pwritev(req->file, (struct iovec*) req->bufs, req->nbufs, req->off);
#else
# if defined(__linux__)
    if (no_pwritev) retry:
# endif
    {
      r = pwrite(req->file, req->bufs[0].base, req->bufs[0].len, req->off);
    }
# if defined(__linux__)
    else {
      r = uv__pwritev(req->file,
                      (struct iovec*) req->bufs,
                      req->nbufs,
                      req->off);
      if (r == -1 && errno == ENOSYS) {
        no_pwritev = 1;
        goto retry;
      }
    }
# endif
#endif
  }

done:
#if defined(__APPLE__)
  if (pthread_mutex_unlock(&lock))
    abort();
#endif

  return r;
}

static ssize_t uv__fs_copyfile(uv_fs_t* req) {
  uv_fs_t fs_req;
  uv_file srcfd;
  uv_file dstfd;
  struct stat statsbuf;
  int dst_flags;
  int result;
  int err;
  size_t bytes_to_send;
  int64_t in_offset;

  dstfd = -1;
  err = 0;

  /* Open the source file. */
  srcfd = uv_fs_open(NULL, &fs_req, req->path, O_RDONLY, 0, NULL);
  uv_fs_req_cleanup(&fs_req);

  if (srcfd < 0)
    return srcfd;

  /* Get the source file's mode. */
  if (fstat(srcfd, &statsbuf)) {
    err = UV__ERR(errno);
    goto out;
  }

  dst_flags = O_WRONLY | O_CREAT | O_TRUNC;

  if (req->flags & UV_FS_COPYFILE_EXCL)
    dst_flags |= O_EXCL;

  /* Open the destination file. */
  dstfd = uv_fs_open(NULL,
                     &fs_req,
                     req->new_path,
                     dst_flags,
                     statsbuf.st_mode,
                     NULL);
  uv_fs_req_cleanup(&fs_req);

  if (dstfd < 0) {
    err = dstfd;
    goto out;
  }

  if (fchmod(dstfd, statsbuf.st_mode) == -1) {
    err = UV__ERR(errno);
    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) {
        err = UV__ERR(errno);
        goto out;
      } else if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) {
        err = UV_ENOTSUP;
        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) {
    err = uv_fs_sendfile(NULL,
                         &fs_req,
                         dstfd,
                         srcfd,
                         in_offset,
                         bytes_to_send,
                         NULL);
    uv_fs_req_cleanup(&fs_req);
    if (err < 0)
      break;
    bytes_to_send -= fs_req.result;
    in_offset += fs_req.result;
  }

out:
  if (err < 0)
    result = err;
  else
    result = 0;

  /* Close the source file. */
  err = uv__close_nocheckstdio(srcfd);

  /* Don't overwrite any existing errors. */
  if (err != 0 && result == 0)
    result = err;

  /* Close the destination file if it is open. */
  if (dstfd >= 0) {
    err = uv__close_nocheckstdio(dstfd);

    /* Don't overwrite any existing errors. */
    if (err != 0 && result == 0)
      result = err;

    /* Remove the destination file if something went wrong. */
    if (result != 0) {
      uv_fs_unlink(NULL, &fs_req, req->new_path, NULL);
      /* Ignore the unlink return value, as an error already happened. */
      uv_fs_req_cleanup(&fs_req);
    }
  }

  if (result == 0)
    return 0;

  errno = UV__ERR(result);
  return -1;
}

static void uv__to_stat(struct stat* src, uv_stat_t* dst) {
  dst->st_dev = src->st_dev;
  dst->st_mode = src->st_mode;
  dst->st_nlink = src->st_nlink;
  dst->st_uid = src->st_uid;
  dst->st_gid = src->st_gid;
  dst->st_rdev = src->st_rdev;
  dst->st_ino = src->st_ino;
  dst->st_size = src->st_size;
  dst->st_blksize = src->st_blksize;
  dst->st_blocks = src->st_blocks;

#if defined(__APPLE__)
  dst->st_atim.tv_sec = src->st_atimespec.tv_sec;
  dst->st_atim.tv_nsec = src->st_atimespec.tv_nsec;
  dst->st_mtim.tv_sec = src->st_mtimespec.tv_sec;
  dst->st_mtim.tv_nsec = src->st_mtimespec.tv_nsec;
  dst->st_ctim.tv_sec = src->st_ctimespec.tv_sec;
  dst->st_ctim.tv_nsec = src->st_ctimespec.tv_nsec;
  dst->st_birthtim.tv_sec = src->st_birthtimespec.tv_sec;
  dst->st_birthtim.tv_nsec = src->st_birthtimespec.tv_nsec;
  dst->st_flags = src->st_flags;
  dst->st_gen = src->st_gen;
#elif defined(__ANDROID__)
  dst->st_atim.tv_sec = src->st_atime;
  dst->st_atim.tv_nsec = src->st_atimensec;
  dst->st_mtim.tv_sec = src->st_mtime;
  dst->st_mtim.tv_nsec = src->st_mtimensec;
  dst->st_ctim.tv_sec = src->st_ctime;
  dst->st_ctim.tv_nsec = src->st_ctimensec;
  dst->st_birthtim.tv_sec = src->st_ctime;
  dst->st_birthtim.tv_nsec = src->st_ctimensec;
  dst->st_flags = 0;
  dst->st_gen = 0;
#elif !defined(_AIX) && (       \
    defined(__DragonFly__)   || \
    defined(__FreeBSD__)     || \
    defined(__OpenBSD__)     || \
    defined(__NetBSD__)      || \
    defined(_GNU_SOURCE)     || \
    defined(_BSD_SOURCE)     || \
    defined(_SVID_SOURCE)    || \
    defined(_XOPEN_SOURCE)   || \
    defined(_DEFAULT_SOURCE))
  dst->st_atim.tv_sec = src->st_atim.tv_sec;
  dst->st_atim.tv_nsec = src->st_atim.tv_nsec;
  dst->st_mtim.tv_sec = src->st_mtim.tv_sec;
  dst->st_mtim.tv_nsec = src->st_mtim.tv_nsec;
  dst->st_ctim.tv_sec = src->st_ctim.tv_sec;
  dst->st_ctim.tv_nsec = src->st_ctim.tv_nsec;
# if defined(__FreeBSD__)    || \
     defined(__NetBSD__)
  dst->st_birthtim.tv_sec = src->st_birthtim.tv_sec;
  dst->st_birthtim.tv_nsec = src->st_birthtim.tv_nsec;
  dst->st_flags = src->st_flags;
  dst->st_gen = src->st_gen;
# else
  dst->st_birthtim.tv_sec = src->st_ctim.tv_sec;
  dst->st_birthtim.tv_nsec = src->st_ctim.tv_nsec;
  dst->st_flags = 0;
  dst->st_gen = 0;

libuv/src/unix/fs.c  view on Meta::CPAN

  struct uv__statx statxbuf;
  int dirfd;
  int flags;
  int mode;
  int rc;

  if (no_statx)
    return UV_ENOSYS;

  dirfd = AT_FDCWD;
  flags = 0; /* AT_STATX_SYNC_AS_STAT */
  mode = 0xFFF; /* STATX_BASIC_STATS + STATX_BTIME */

  if (is_fstat) {
    dirfd = fd;
    flags |= 0x1000; /* AT_EMPTY_PATH */
  }

  if (is_lstat)
    flags |= AT_SYMLINK_NOFOLLOW;

  rc = uv__statx(dirfd, path, flags, mode, &statxbuf);

  if (rc == -1) {
    /* EPERM happens when a seccomp filter rejects the system call.
     * Has been observed with libseccomp < 2.3.3 and docker < 18.04.
     */
    if (errno != EINVAL && errno != EPERM && errno != ENOSYS)
      return -1;

    no_statx = 1;
    return UV_ENOSYS;
  }

  buf->st_dev = 256 * statxbuf.stx_dev_major + statxbuf.stx_dev_minor;
  buf->st_mode = statxbuf.stx_mode;
  buf->st_nlink = statxbuf.stx_nlink;
  buf->st_uid = statxbuf.stx_uid;
  buf->st_gid = statxbuf.stx_gid;
  buf->st_rdev = statxbuf.stx_rdev_major;
  buf->st_ino = statxbuf.stx_ino;
  buf->st_size = statxbuf.stx_size;
  buf->st_blksize = statxbuf.stx_blksize;
  buf->st_blocks = statxbuf.stx_blocks;
  buf->st_atim.tv_sec = statxbuf.stx_atime.tv_sec;
  buf->st_atim.tv_nsec = statxbuf.stx_atime.tv_nsec;
  buf->st_mtim.tv_sec = statxbuf.stx_mtime.tv_sec;
  buf->st_mtim.tv_nsec = statxbuf.stx_mtime.tv_nsec;
  buf->st_ctim.tv_sec = statxbuf.stx_ctime.tv_sec;
  buf->st_ctim.tv_nsec = statxbuf.stx_ctime.tv_nsec;
  buf->st_birthtim.tv_sec = statxbuf.stx_btime.tv_sec;
  buf->st_birthtim.tv_nsec = statxbuf.stx_btime.tv_nsec;

  return 0;
#else
  return UV_ENOSYS;
#endif /* __linux__ */
}


static int uv__fs_stat(const char *path, uv_stat_t *buf) {
  struct stat pbuf;
  int ret;

  ret = uv__fs_statx(-1, path, /* is_fstat */ 0, /* is_lstat */ 0, buf);
  if (ret != UV_ENOSYS)
    return ret;

  ret = stat(path, &pbuf);
  if (ret == 0)
    uv__to_stat(&pbuf, buf);

  return ret;
}


static int uv__fs_lstat(const char *path, uv_stat_t *buf) {
  struct stat pbuf;
  int ret;

  ret = uv__fs_statx(-1, path, /* is_fstat */ 0, /* is_lstat */ 1, buf);
  if (ret != UV_ENOSYS)
    return ret;

  ret = lstat(path, &pbuf);
  if (ret == 0)
    uv__to_stat(&pbuf, buf);

  return ret;
}


static int uv__fs_fstat(int fd, uv_stat_t *buf) {
  struct stat pbuf;
  int ret;

  ret = uv__fs_statx(fd, "", /* is_fstat */ 1, /* is_lstat */ 0, buf);
  if (ret != UV_ENOSYS)
    return ret;

  ret = fstat(fd, &pbuf);
  if (ret == 0)
    uv__to_stat(&pbuf, buf);

  return ret;
}

static size_t uv__fs_buf_offset(uv_buf_t* bufs, size_t size) {
  size_t offset;
  /* Figure out which bufs are done */
  for (offset = 0; size > 0 && bufs[offset].len <= size; ++offset)
    size -= bufs[offset].len;

  /* Fix a partial read/write */
  if (size > 0) {
    bufs[offset].base += size;
    bufs[offset].len -= size;
  }
  return offset;
}

static ssize_t uv__fs_write_all(uv_fs_t* req) {
  unsigned int iovmax;
  unsigned int nbufs;
  uv_buf_t* bufs;
  ssize_t total;
  ssize_t result;

  iovmax = uv__getiovmax();
  nbufs = req->nbufs;
  bufs = req->bufs;
  total = 0;

  while (nbufs > 0) {
    req->nbufs = nbufs;
    if (req->nbufs > iovmax)
      req->nbufs = iovmax;

    do
      result = uv__fs_write(req);
    while (result < 0 && errno == EINTR);

    if (result <= 0) {
      if (total == 0)
        total = result;
      break;
    }

    if (req->off >= 0)
      req->off += result;

    req->nbufs = uv__fs_buf_offset(req->bufs, result);
    req->bufs += req->nbufs;
    nbufs -= req->nbufs;
    total += result;
  }

  if (bufs != req->bufsml)
    uv__free(bufs);

  req->bufs = NULL;
  req->nbufs = 0;

  return total;
}


static void uv__fs_work(struct uv__work* w) {
  int retry_on_eintr;
  uv_fs_t* req;
  ssize_t r;

  req = container_of(w, uv_fs_t, work_req);
  retry_on_eintr = !(req->fs_type == UV_FS_CLOSE ||
                     req->fs_type == UV_FS_READ);

  do {
    errno = 0;

#define X(type, action)                                                       \
  case UV_FS_ ## type:                                                        \
    r = action;                                                               \
    break;

    switch (req->fs_type) {
    X(ACCESS, access(req->path, req->flags));
    X(CHMOD, chmod(req->path, req->mode));
    X(CHOWN, chown(req->path, req->uid, req->gid));
    X(CLOSE, uv__fs_close(req->file));
    X(COPYFILE, uv__fs_copyfile(req));
    X(FCHMOD, fchmod(req->file, req->mode));
    X(FCHOWN, fchown(req->file, req->uid, req->gid));
    X(LCHOWN, lchown(req->path, req->uid, req->gid));
    X(FDATASYNC, uv__fs_fdatasync(req));
    X(FSTAT, uv__fs_fstat(req->file, &req->statbuf));
    X(FSYNC, uv__fs_fsync(req));
    X(FTRUNCATE, ftruncate(req->file, req->off));
    X(FUTIME, uv__fs_futime(req));
    X(LSTAT, uv__fs_lstat(req->path, &req->statbuf));
    X(LINK, link(req->path, req->new_path));
    X(MKDIR, mkdir(req->path, req->mode));
    X(MKDTEMP, uv__fs_mkdtemp(req));
    X(OPEN, uv__fs_open(req));
    X(READ, uv__fs_read(req));
    X(SCANDIR, uv__fs_scandir(req));
    X(OPENDIR, uv__fs_opendir(req));
    X(READDIR, uv__fs_readdir(req));
    X(CLOSEDIR, uv__fs_closedir(req));
    X(READLINK, uv__fs_readlink(req));
    X(REALPATH, uv__fs_realpath(req));
    X(RENAME, rename(req->path, req->new_path));
    X(RMDIR, rmdir(req->path));
    X(SENDFILE, uv__fs_sendfile(req));
    X(STAT, uv__fs_stat(req->path, &req->statbuf));
    X(SYMLINK, symlink(req->path, req->new_path));
    X(UNLINK, unlink(req->path));
    X(UTIME, uv__fs_utime(req));
    X(WRITE, uv__fs_write_all(req));
    default: abort();
    }
#undef X
  } while (r == -1 && errno == EINTR && retry_on_eintr);

  if (r == -1)
    req->result = UV__ERR(errno);
  else
    req->result = r;

  if (r == 0 && (req->fs_type == UV_FS_STAT ||
                 req->fs_type == UV_FS_FSTAT ||
                 req->fs_type == UV_FS_LSTAT)) {
    req->ptr = &req->statbuf;
  }
}


static void uv__fs_done(struct uv__work* w, int status) {
  uv_fs_t* req;

  req = container_of(w, uv_fs_t, work_req);
  uv__req_unregister(req->loop, req);

  if (status == UV_ECANCELED) {
    assert(req->result == 0);
    req->result = UV_ECANCELED;
  }

  req->cb(req);
}


int uv_fs_access(uv_loop_t* loop,
                 uv_fs_t* req,
                 const char* path,
                 int flags,
                 uv_fs_cb cb) {
  INIT(ACCESS);
  PATH;
  req->flags = flags;
  POST;
}


int uv_fs_chmod(uv_loop_t* loop,
                uv_fs_t* req,
                const char* path,
                int mode,
                uv_fs_cb cb) {
  INIT(CHMOD);
  PATH;
  req->mode = mode;
  POST;
}

libuv/src/unix/fs.c  view on Meta::CPAN

  req->uid = uid;
  req->gid = gid;
  POST;
}


int uv_fs_close(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) {
  INIT(CLOSE);
  req->file = file;
  POST;
}


int uv_fs_fchmod(uv_loop_t* loop,
                 uv_fs_t* req,
                 uv_file file,
                 int mode,
                 uv_fs_cb cb) {
  INIT(FCHMOD);
  req->file = file;
  req->mode = mode;
  POST;
}


int uv_fs_fchown(uv_loop_t* loop,
                 uv_fs_t* req,
                 uv_file file,
                 uv_uid_t uid,
                 uv_gid_t gid,
                 uv_fs_cb cb) {
  INIT(FCHOWN);
  req->file = file;
  req->uid = uid;
  req->gid = gid;
  POST;
}


int uv_fs_lchown(uv_loop_t* loop,
                 uv_fs_t* req,
                 const char* path,
                 uv_uid_t uid,
                 uv_gid_t gid,
                 uv_fs_cb cb) {
  INIT(LCHOWN);
  PATH;
  req->uid = uid;
  req->gid = gid;
  POST;
}


int uv_fs_fdatasync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) {
  INIT(FDATASYNC);
  req->file = file;
  POST;
}


int uv_fs_fstat(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) {
  INIT(FSTAT);
  req->file = file;
  POST;
}


int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) {
  INIT(FSYNC);
  req->file = file;
  POST;
}


int uv_fs_ftruncate(uv_loop_t* loop,
                    uv_fs_t* req,
                    uv_file file,
                    int64_t off,
                    uv_fs_cb cb) {
  INIT(FTRUNCATE);
  req->file = file;
  req->off = off;
  POST;
}


int uv_fs_futime(uv_loop_t* loop,
                 uv_fs_t* req,
                 uv_file file,
                 double atime,
                 double mtime,
                 uv_fs_cb cb) {
  INIT(FUTIME);
  req->file = file;
  req->atime = atime;
  req->mtime = mtime;
  POST;
}


int uv_fs_lstat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) {
  INIT(LSTAT);
  PATH;
  POST;
}


int uv_fs_link(uv_loop_t* loop,
               uv_fs_t* req,
               const char* path,
               const char* new_path,
               uv_fs_cb cb) {
  INIT(LINK);
  PATH2;
  POST;
}


int uv_fs_mkdir(uv_loop_t* loop,
                uv_fs_t* req,
                const char* path,
                int mode,
                uv_fs_cb cb) {
  INIT(MKDIR);
  PATH;
  req->mode = mode;
  POST;
}


int uv_fs_mkdtemp(uv_loop_t* loop,
                  uv_fs_t* req,
                  const char* tpl,
                  uv_fs_cb cb) {
  INIT(MKDTEMP);
  req->path = uv__strdup(tpl);
  if (req->path == NULL)
    return UV_ENOMEM;
  POST;
}


int uv_fs_open(uv_loop_t* loop,
               uv_fs_t* req,
               const char* path,
               int flags,
               int mode,
               uv_fs_cb cb) {
  INIT(OPEN);
  PATH;
  req->flags = flags;
  req->mode = mode;
  POST;
}


int uv_fs_read(uv_loop_t* loop, uv_fs_t* req,
               uv_file file,
               const uv_buf_t bufs[],
               unsigned int nbufs,
               int64_t off,

libuv/src/unix/fs.c  view on Meta::CPAN

    return UV_EINVAL;

  req->ptr = dir;
  POST;
}

int uv_fs_readlink(uv_loop_t* loop,
                   uv_fs_t* req,
                   const char* path,
                   uv_fs_cb cb) {
  INIT(READLINK);
  PATH;
  POST;
}


int uv_fs_realpath(uv_loop_t* loop,
                  uv_fs_t* req,
                  const char * path,
                  uv_fs_cb cb) {
  INIT(REALPATH);
  PATH;
  POST;
}


int uv_fs_rename(uv_loop_t* loop,
                 uv_fs_t* req,
                 const char* path,
                 const char* new_path,
                 uv_fs_cb cb) {
  INIT(RENAME);
  PATH2;
  POST;
}


int uv_fs_rmdir(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) {
  INIT(RMDIR);
  PATH;
  POST;
}


int uv_fs_sendfile(uv_loop_t* loop,
                   uv_fs_t* req,
                   uv_file out_fd,
                   uv_file in_fd,
                   int64_t off,
                   size_t len,
                   uv_fs_cb cb) {
  INIT(SENDFILE);
  req->flags = in_fd; /* hack */
  req->file = out_fd;
  req->off = off;
  req->bufsml[0].len = len;
  POST;
}


int uv_fs_stat(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) {
  INIT(STAT);
  PATH;
  POST;
}


int uv_fs_symlink(uv_loop_t* loop,
                  uv_fs_t* req,
                  const char* path,
                  const char* new_path,
                  int flags,
                  uv_fs_cb cb) {
  INIT(SYMLINK);
  PATH2;
  req->flags = flags;
  POST;
}


int uv_fs_unlink(uv_loop_t* loop, uv_fs_t* req, const char* path, uv_fs_cb cb) {
  INIT(UNLINK);
  PATH;
  POST;
}


int uv_fs_utime(uv_loop_t* loop,
                uv_fs_t* req,
                const char* path,
                double atime,
                double mtime,
                uv_fs_cb cb) {
  INIT(UTIME);
  PATH;
  req->atime = atime;
  req->mtime = mtime;
  POST;
}


int uv_fs_write(uv_loop_t* loop,
                uv_fs_t* req,
                uv_file file,
                const uv_buf_t bufs[],
                unsigned int nbufs,
                int64_t off,
                uv_fs_cb cb) {
  INIT(WRITE);

  if (bufs == NULL || nbufs == 0)
    return UV_EINVAL;

  req->file = file;

  req->nbufs = nbufs;
  req->bufs = req->bufsml;
  if (nbufs > ARRAY_SIZE(req->bufsml))
    req->bufs = uv__malloc(nbufs * sizeof(*bufs));

  if (req->bufs == NULL)



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