diff options
Diffstat (limited to 'gnulib/import/fstat.c')
-rw-r--r-- | gnulib/import/fstat.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/gnulib/import/fstat.c b/gnulib/import/fstat.c new file mode 100644 index 0000000..435c429 --- /dev/null +++ b/gnulib/import/fstat.c @@ -0,0 +1,88 @@ +/* fstat() replacement. + Copyright (C) 2011-2016 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 <http://www.gnu.org/licenses/>. */ + +/* If the user's config.h happens to include <sys/stat.h>, let it include only + the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to + rpl_fstat. */ +#define __need_system_sys_stat_h +#include <config.h> + +/* Get the original definition of fstat. It might be defined as a macro. */ +#include <sys/types.h> +#include <sys/stat.h> +#if _GL_WINDOWS_64_BIT_ST_SIZE +# undef stat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */ +# define stat _stati64 +# undef fstat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */ +# define fstat _fstati64 +#endif +#undef __need_system_sys_stat_h + +static int +orig_fstat (int fd, struct stat *buf) +{ + return fstat (fd, buf); +} + +/* Specification. */ +/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc + eliminates this include because of the preliminary #include <sys/stat.h> + above. */ +#include "sys/stat.h" + +#include <errno.h> +#include <unistd.h> + +#if HAVE_MSVC_INVALID_PARAMETER_HANDLER +# include "msvc-inval.h" +#endif + +#if HAVE_MSVC_INVALID_PARAMETER_HANDLER +static int +fstat_nothrow (int fd, struct stat *buf) +{ + int result; + + TRY_MSVC_INVAL + { + result = orig_fstat (fd, buf); + } + CATCH_MSVC_INVAL + { + result = -1; + errno = EBADF; + } + DONE_MSVC_INVAL; + + return result; +} +#else +# define fstat_nothrow orig_fstat +#endif + +int +rpl_fstat (int fd, struct stat *buf) +{ +#if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY + /* Handle the case when rpl_open() used a dummy file descriptor to work + around an open() that can't normally visit directories. */ + const char *name = _gl_directory_name (fd); + if (name != NULL) + return stat (name, buf); +#endif + + return fstat_nothrow (fd, buf); +} |