diff options
Diffstat (limited to 'gnulib/import/getcwd.c')
| -rw-r--r-- | gnulib/import/getcwd.c | 86 |
1 files changed, 52 insertions, 34 deletions
diff --git a/gnulib/import/getcwd.c b/gnulib/import/getcwd.c index 1a42ef1..6b2ac73 100644 --- a/gnulib/import/getcwd.c +++ b/gnulib/import/getcwd.c @@ -1,22 +1,29 @@ -/* Copyright (C) 1991-1999, 2004-2020 Free Software Foundation, Inc. +/* Copyright (C) 1991-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. - 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. + The GNU C Library 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, + The GNU C Library 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. + 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/>. */ + You should have received a copy of the GNU General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ #if !_LIBC # include <config.h> # include <unistd.h> +# include "pathmax.h" +#else +# define HAVE_OPENAT 1 +# define D_INO_IN_DIRENT 1 +# define HAVE_MSVC_INVALID_PARAMETER_HANDLER 0 +# define HAVE_MINIMALLY_WORKING_GETCWD 0 #endif #include <errno.h> @@ -65,8 +72,6 @@ # define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif -#include "pathmax.h" - /* In this file, PATH_MAX only serves as a threshold for choosing among two algorithms. */ #ifndef PATH_MAX @@ -84,11 +89,24 @@ #endif #if !_LIBC -# define __getcwd rpl_getcwd -# define __lstat lstat +# define GETCWD_RETURN_TYPE char * +# define __close_nocancel_nostatus close +# define __getcwd_generic rpl_getcwd +# undef stat64 +# define stat64 stat +# define __fstat64 fstat +# define __fstatat64 fstatat +# define __lstat64 lstat # define __closedir closedir # define __opendir opendir -# define __readdir readdir +# define __readdir64 readdir +# define __fdopendir fdopendir +# define __openat openat +# define __rewinddir rewinddir +# define __openat64 openat +# define dirent64 dirent +#else +# include <not-cancel.h> #endif /* The results of opendir() in this file are not used with dirfd and fchdir, @@ -104,7 +122,7 @@ # undef closedir #endif -#ifdef _MSC_VER +#if defined _WIN32 && !defined __CYGWIN__ # if HAVE_MSVC_INVALID_PARAMETER_HANDLER static char * getcwd_nothrow (char *buf, size_t size) @@ -138,8 +156,8 @@ getcwd_nothrow (char *buf, size_t size) if BUF is NULL, an array is allocated with 'malloc'; the array is SIZE bytes long, unless SIZE == 0, in which case it is as big as necessary. */ -char * -__getcwd (char *buf, size_t size) +GETCWD_RETURN_TYPE +__getcwd_generic (char *buf, size_t size) { /* Lengths of big file name components and entire file names, and a deep level of file name nesting. These numbers are not upper @@ -167,7 +185,7 @@ __getcwd (char *buf, size_t size) ino_t rootino, thisino; char *dir; register char *dirp; - struct stat st; + struct stat64 st; size_t allocated = size; size_t used; @@ -210,7 +228,6 @@ __getcwd (char *buf, size_t size) return NULL; # endif #endif - if (size == 0) { if (buf != NULL) @@ -234,19 +251,19 @@ __getcwd (char *buf, size_t size) dirp = dir + allocated; *--dirp = '\0'; - if (__lstat (".", &st) < 0) + if (__lstat64 (".", &st) < 0) goto lose; thisdev = st.st_dev; thisino = st.st_ino; - if (__lstat ("/", &st) < 0) + if (__lstat64 ("/", &st) < 0) goto lose; rootdev = st.st_dev; rootino = st.st_ino; while (!(thisdev == rootdev && thisino == rootino)) { - struct dirent *d; + struct dirent64 *d; dev_t dotdev; ino_t dotino; bool mount_point; @@ -257,16 +274,16 @@ __getcwd (char *buf, size_t size) /* Look at the parent directory. */ #if HAVE_OPENAT_SUPPORT - fd = openat (fd, "..", O_RDONLY); + fd = __openat64 (fd, "..", O_RDONLY); if (fd < 0) goto lose; fd_needs_closing = true; - parent_status = fstat (fd, &st); + parent_status = __fstat64 (fd, &st); #else dotlist[dotlen++] = '.'; dotlist[dotlen++] = '.'; dotlist[dotlen] = '\0'; - parent_status = __lstat (dotlist, &st); + parent_status = __lstat64 (dotlist, &st); #endif if (parent_status != 0) goto lose; @@ -284,7 +301,7 @@ __getcwd (char *buf, size_t size) /* Search for the last directory. */ #if HAVE_OPENAT_SUPPORT - dirstream = fdopendir (fd); + dirstream = __fdopendir (fd); if (dirstream == NULL) goto lose; fd_needs_closing = false; @@ -299,7 +316,7 @@ __getcwd (char *buf, size_t size) /* Clear errno to distinguish EOF from error if readdir returns NULL. */ __set_errno (0); - d = __readdir (dirstream); + d = __readdir64 (dirstream); /* When we've iterated through all directory entries without finding one with a matching d_ino, rewind the stream and consider each @@ -311,8 +328,8 @@ __getcwd (char *buf, size_t size) if (d == NULL && errno == 0 && use_d_ino) { use_d_ino = false; - rewinddir (dirstream); - d = __readdir (dirstream); + __rewinddir (dirstream); + d = __readdir64 (dirstream); } if (d == NULL) @@ -338,7 +355,7 @@ __getcwd (char *buf, size_t size) { int entry_status; #if HAVE_OPENAT_SUPPORT - entry_status = fstatat (fd, d->d_name, &st, AT_SYMLINK_NOFOLLOW); + entry_status = __fstatat64 (fd, d->d_name, &st, AT_SYMLINK_NOFOLLOW); #else /* Compute size needed for this file name, or for the file name ".." in the same directory, whichever is larger. @@ -375,7 +392,7 @@ __getcwd (char *buf, size_t size) } memcpy (dotlist + dotlen, d->d_name, _D_ALLOC_NAMLEN (d)); - entry_status = __lstat (dotlist, &st); + entry_status = __lstat64 (dotlist, &st); #endif /* We don't fail here if we cannot stat() a directory entry. This can happen when (network) file systems fail. If this @@ -461,7 +478,7 @@ __getcwd (char *buf, size_t size) __closedir (dirstream); #if HAVE_OPENAT_SUPPORT if (fd_needs_closing) - close (fd); + __close_nocancel_nostatus (fd); #else if (dotlist != dots) free (dotlist); @@ -473,6 +490,7 @@ __getcwd (char *buf, size_t size) return NULL; } -#ifdef weak_alias +#if defined _LIBC && !defined GETCWD_RETURN_TYPE +libc_hidden_def (__getcwd) weak_alias (__getcwd, getcwd) #endif |