X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=gnu%2Fread.c;fp=gnu%2Fread.c;h=13e4d44aa681d1b3e56cb355e3799d780ab74bb4;hb=daa269958ad8d50ef8154ccb65e58acaf7a6dd99;hp=0000000000000000000000000000000000000000;hpb=1a44d77d50f4fb37c0410eed04b82303624ea2ec;p=debian%2Ftar diff --git a/gnu/read.c b/gnu/read.c new file mode 100644 index 00000000..13e4d44a --- /dev/null +++ b/gnu/read.c @@ -0,0 +1,87 @@ +/* -*- buffer-read-only: t -*- vi: set ro: */ +/* DO NOT EDIT! GENERATED AUTOMATICALLY! */ +/* POSIX compatible read() function. + Copyright (C) 2008-2013 Free Software Foundation, Inc. + Written by Bruno Haible , 2011. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include + +/* Specification. */ +#include + +#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ + +# include +# include + +# define WIN32_LEAN_AND_MEAN /* avoid including junk */ +# include + +# include "msvc-inval.h" +# include "msvc-nothrow.h" + +# undef read + +# if HAVE_MSVC_INVALID_PARAMETER_HANDLER +static ssize_t +read_nothrow (int fd, void *buf, size_t count) +{ + ssize_t result; + + TRY_MSVC_INVAL + { + result = read (fd, buf, count); + } + CATCH_MSVC_INVAL + { + result = -1; + errno = EBADF; + } + DONE_MSVC_INVAL; + + return result; +} +# else +# define read_nothrow read +# endif + +ssize_t +rpl_read (int fd, void *buf, size_t count) +{ + ssize_t ret = read_nothrow (fd, buf, count); + +# if GNULIB_NONBLOCKING + if (ret < 0 + && GetLastError () == ERROR_NO_DATA) + { + HANDLE h = (HANDLE) _get_osfhandle (fd); + if (GetFileType (h) == FILE_TYPE_PIPE) + { + /* h is a pipe or socket. */ + DWORD state; + if (GetNamedPipeHandleState (h, &state, NULL, NULL, NULL, NULL, 0) + && (state & PIPE_NOWAIT) != 0) + /* h is a pipe in non-blocking mode. + Change errno from EINVAL to EAGAIN. */ + errno = EAGAIN; + } + } +# endif + + return ret; +} + +#endif