diff options
Diffstat (limited to 'lib/fdopen.c')
-rw-r--r-- | lib/fdopen.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/fdopen.c b/lib/fdopen.c new file mode 100644 index 0000000..b0f13fa --- /dev/null +++ b/lib/fdopen.c @@ -0,0 +1,69 @@ +/* Open a stream with a given file descriptor. + Copyright (C) 2011-2020 Free Software Foundation, Inc. + + 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 <https://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include <stdio.h> + +#include <errno.h> + +#if HAVE_MSVC_INVALID_PARAMETER_HANDLER +# include "msvc-inval.h" +#endif + +#undef fdopen + +#if HAVE_MSVC_INVALID_PARAMETER_HANDLER +static FILE * +fdopen_nothrow (int fd, const char *mode) +{ + FILE *result; + + TRY_MSVC_INVAL + { + result = fdopen (fd, mode); + } + CATCH_MSVC_INVAL + { + result = NULL; + } + DONE_MSVC_INVAL; + + return result; +} +#else +# define fdopen_nothrow fdopen +#endif + +FILE * +rpl_fdopen (int fd, const char *mode) +{ + int saved_errno = errno; + FILE *fp; + + errno = 0; + fp = fdopen_nothrow (fd, mode); + if (fp == NULL) + { + if (errno == 0) + errno = EBADF; + } + else + errno = saved_errno; + + return fp; +} |