diff options
Diffstat (limited to 'cross/lib/fstatat.c')
-rw-r--r-- | cross/lib/fstatat.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/cross/lib/fstatat.c b/cross/lib/fstatat.c deleted file mode 100644 index 372965ef5f6..00000000000 --- a/cross/lib/fstatat.c +++ /dev/null @@ -1,148 +0,0 @@ -/* Work around an fstatat bug on Solaris 9. - - Copyright (C) 2006, 2009-2023 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/>. */ - -/* Written by Paul Eggert and Jim Meyering. */ - -/* 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_fstatat doesn't recurse to - rpl_fstatat. */ -#define __need_system_sys_stat_h -#include <config.h> - -/* Get the original definition of fstatat. It might be defined as a macro. */ -#include <sys/types.h> -#include <sys/stat.h> -#undef __need_system_sys_stat_h - -#if HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG -static int -orig_fstatat (int fd, char const *filename, struct stat *buf, int flags) -{ - return fstatat (fd, filename, buf, flags); -} -#endif - -#ifdef __osf__ -/* 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" -#else -# include <sys/stat.h> -#endif - -#include "stat-time.h" - -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <string.h> - -#if HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG - -# ifndef LSTAT_FOLLOWS_SLASHED_SYMLINK -# define LSTAT_FOLLOWS_SLASHED_SYMLINK 0 -# endif - -static int -normal_fstatat (int fd, char const *file, struct stat *st, int flag) -{ - return stat_time_normalize (orig_fstatat (fd, file, st, flag), st); -} - -/* fstatat should always follow symbolic links that end in /, but on - Solaris 9 it doesn't if AT_SYMLINK_NOFOLLOW is specified. - Likewise, trailing slash on a non-directory should be an error. - These are the same problems that lstat.c and stat.c address, so - solve it in a similar way. - - AIX 7.1 fstatat (AT_FDCWD, ..., 0) always fails, which is a bug. - Work around this bug if FSTATAT_AT_FDCWD_0_BROKEN is nonzero. */ - -int -rpl_fstatat (int fd, char const *file, struct stat *st, int flag) -{ - int result = normal_fstatat (fd, file, st, flag); - size_t len; - - if (LSTAT_FOLLOWS_SLASHED_SYMLINK || result != 0) - return result; - len = strlen (file); - if (flag & AT_SYMLINK_NOFOLLOW) - { - /* Fix lstat behavior. */ - if (file[len - 1] != '/' || S_ISDIR (st->st_mode)) - return 0; - if (!S_ISLNK (st->st_mode)) - { - errno = ENOTDIR; - return -1; - } - result = normal_fstatat (fd, file, st, flag & ~AT_SYMLINK_NOFOLLOW); - } - /* Fix stat behavior. */ - if (result == 0 && !S_ISDIR (st->st_mode) && file[len - 1] == '/') - { - errno = ENOTDIR; - return -1; - } - return result; -} - -#else /* ! (HAVE_FSTATAT && HAVE_WORKING_FSTATAT_ZERO_FLAG) */ - -/* On mingw, the gnulib <sys/stat.h> defines 'stat' as a function-like - macro; but using it in AT_FUNC_F2 causes compilation failure - because the preprocessor sees a use of a macro that requires two - arguments but is only given one. Hence, we need an inline - forwarder to get past the preprocessor. */ -static int -stat_func (char const *name, struct stat *st) -{ - return stat (name, st); -} - -/* Likewise, if there is no native 'lstat', then the gnulib - <sys/stat.h> defined it as stat, which also needs adjustment. */ -# if !HAVE_LSTAT -# undef lstat -# define lstat stat_func -# endif - -/* Replacement for Solaris' function by the same name. - <https://www.google.com/search?q=fstatat+site:docs.oracle.com> - First, try to simulate it via l?stat ("/proc/self/fd/FD/FILE"). - Failing that, simulate it via save_cwd/fchdir/(stat|lstat)/restore_cwd. - If either the save_cwd or the restore_cwd fails (relatively unlikely), - then give a diagnostic and exit nonzero. - Otherwise, this function works just like Solaris' fstatat. */ - -# define AT_FUNC_NAME fstatat -# define AT_FUNC_F1 lstat -# define AT_FUNC_F2 stat_func -# define AT_FUNC_USE_F1_COND AT_SYMLINK_NOFOLLOW -# define AT_FUNC_POST_FILE_PARAM_DECLS , struct stat *st, int flag -# define AT_FUNC_POST_FILE_ARGS , st -# include "at-func.c" -# undef AT_FUNC_NAME -# undef AT_FUNC_F1 -# undef AT_FUNC_F2 -# undef AT_FUNC_USE_F1_COND -# undef AT_FUNC_POST_FILE_PARAM_DECLS -# undef AT_FUNC_POST_FILE_ARGS - -#endif /* !HAVE_FSTATAT */ |