[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/posix/getcwd.c b/ap/libc/glibc/glibc-2.22/sysdeps/posix/getcwd.c
new file mode 100644
index 0000000..afe6967
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/posix/getcwd.c
@@ -0,0 +1,543 @@
+/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Wants:
+ AC_STDC_HEADERS
+ AC_DIR_HEADER
+ AC_UNISTD_H
+ AC_MEMORY_H
+ AC_CONST
+ AC_ALLOCA
+ */
+
+/* AIX requires this to be the first thing in the file. */
+#if defined _AIX && !defined __GNUC__
+ #pragma alloca
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef STDC_HEADERS
+# include <stddef.h>
+#endif
+
+#if !defined __GNU_LIBRARY__ && !defined STDC_HEADERS
+extern int errno;
+#endif
+#ifndef __set_errno
+# define __set_errno(val) errno = (val)
+#endif
+
+#ifndef NULL
+# define NULL 0
+#endif
+
+#if defined USGr3 && !defined DIRENT
+# define DIRENT
+#endif /* USGr3 */
+#if defined Xenix && !defined SYSNDIR
+# define SYSNDIR
+#endif /* Xenix */
+
+#if defined POSIX || defined DIRENT || defined __GNU_LIBRARY__
+# include <dirent.h>
+# ifndef __GNU_LIBRARY__
+# define D_NAMLEN(d) strlen((d)->d_name)
+# else
+# define HAVE_D_NAMLEN
+# define D_NAMLEN(d) ((d)->d_namlen)
+# endif
+#else /* not POSIX or DIRENT */
+# define dirent direct
+# define D_NAMLEN(d) ((d)->d_namlen)
+# define HAVE_D_NAMLEN
+# if defined USG && !defined sgi
+# if defined SYSNDIR
+# include <sys/ndir.h>
+# else /* Not SYSNDIR */
+# include "ndir.h"
+# endif /* SYSNDIR */
+# else /* not USG */
+# include <sys/dir.h>
+# endif /* USG */
+#endif /* POSIX or DIRENT or __GNU_LIBRARY__ */
+
+#if defined HAVE_UNISTD_H || defined __GNU_LIBRARY__
+# include <unistd.h>
+#endif
+
+#if defined STDC_HEADERS || defined __GNU_LIBRARY__ || defined POSIX
+# include <stdlib.h>
+# include <string.h>
+# define ANSI_STRING
+#else /* No standard headers. */
+
+# ifdef USG
+
+# include <string.h>
+# ifdef NEED_MEMORY_H
+# include <memory.h>
+# endif
+# define ANSI_STRING
+
+# else /* Not USG. */
+
+# ifdef NeXT
+
+# include <string.h>
+
+# else /* Not NeXT. */
+
+# include <strings.h>
+
+# ifndef bcmp
+extern int bcmp ();
+# endif
+# ifndef bzero
+extern void bzero ();
+# endif
+# ifndef bcopy
+extern void bcopy ();
+# endif
+
+# endif /* NeXT. */
+
+# endif /* USG. */
+
+extern char *malloc (), *realloc ();
+extern void free ();
+
+#endif /* Standard headers. */
+
+#ifndef ANSI_STRING
+# define memcpy(d, s, n) bcopy((s), (d), (n))
+# define memmove memcpy
+#endif /* Not ANSI_STRING. */
+
+#ifndef MAX
+# define MAX(a, b) ((a) < (b) ? (b) : (a))
+#endif
+
+#ifdef _LIBC
+# ifndef mempcpy
+# define mempcpy __mempcpy
+# endif
+# define HAVE_MEMPCPY 1
+#endif
+
+#if !defined __alloca && !defined __GNU_LIBRARY__
+
+# ifdef __GNUC__
+# undef alloca
+# define alloca(n) __builtin_alloca (n)
+# else /* Not GCC. */
+# if defined sparc || defined HAVE_ALLOCA_H
+# include <alloca.h>
+# else /* Not sparc or HAVE_ALLOCA_H. */
+# ifndef _AIX
+extern char *alloca ();
+# endif /* Not _AIX. */
+# endif /* sparc or HAVE_ALLOCA_H. */
+# endif /* GCC. */
+
+# define __alloca alloca
+
+#endif
+
+#if defined HAVE_LIMITS_H || defined STDC_HEADERS || defined __GNU_LIBRARY__
+# include <limits.h>
+#else
+# include <sys/param.h>
+#endif
+
+#if defined _LIBC
+# include <not-cancel.h>
+# include <kernel-features.h>
+#else
+# define openat64_not_cancel_3(dfd, name, mode) openat64 (dfd, name, mode)
+# define close_not_cancel_no_status(fd) close (fd)
+#endif
+
+#ifndef PATH_MAX
+# ifdef MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+# else
+# define PATH_MAX 1024
+# endif
+#endif
+
+#if !defined STDC_HEADERS && !defined __GNU_LIBRARY__
+# undef size_t
+# define size_t unsigned int
+#endif
+
+#ifndef __GNU_LIBRARY__
+# define __lstat64 stat64
+#endif
+
+#ifndef _LIBC
+# define __rewinddir rewinddir
+#endif
+
+#ifndef _LIBC
+# define __getcwd getcwd
+#endif
+
+#ifndef GETCWD_RETURN_TYPE
+# define GETCWD_RETURN_TYPE char *
+#endif
+
+#ifdef __ASSUME_ATFCTS
+# define __have_atfcts 1
+#elif IS_IN (rtld)
+static int __rtld_have_atfcts;
+# define __have_atfcts __rtld_have_atfcts
+#endif
+
+/* Get the pathname of the current working directory, and put it in SIZE
+ bytes of BUF. Returns NULL if the directory couldn't be determined or
+ SIZE was too small. If successful, returns BUF. In GNU, 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. */
+
+GETCWD_RETURN_TYPE
+__getcwd (buf, size)
+ char *buf;
+ size_t size;
+{
+#ifndef __ASSUME_ATFCTS
+ static const char dots[]
+ = "../../../../../../../../../../../../../../../../../../../../../../../\
+../../../../../../../../../../../../../../../../../../../../../../../../../../\
+../../../../../../../../../../../../../../../../../../../../../../../../../..";
+ const char *dotp = &dots[sizeof (dots)];
+ const char *dotlist = dots;
+ size_t dotsize = sizeof (dots) - 1;
+#endif
+ int prev_errno = errno;
+ DIR *dirstream = NULL;
+ bool fd_needs_closing = false;
+ int fd = AT_FDCWD;
+
+ char *path;
+#ifndef NO_ALLOCATION
+ size_t allocated = size;
+ if (size == 0)
+ {
+ if (buf != NULL)
+ {
+ __set_errno (EINVAL);
+ return NULL;
+ }
+
+ allocated = PATH_MAX + 1;
+ }
+
+ if (buf == NULL)
+ {
+ path = malloc (allocated);
+ if (path == NULL)
+ return NULL;
+ }
+ else
+#else
+# define allocated size
+#endif
+ path = buf;
+
+ char *pathp = path + allocated;
+ *--pathp = '\0';
+
+ struct stat64 st;
+ if (__lstat64 (".", &st) < 0)
+ goto lose;
+ dev_t thisdev = st.st_dev;
+ ino_t thisino = st.st_ino;
+
+ if (__lstat64 ("/", &st) < 0)
+ goto lose;
+ dev_t rootdev = st.st_dev;
+ ino_t rootino = st.st_ino;
+
+ while (!(thisdev == rootdev && thisino == rootino))
+ {
+ if (__have_atfcts >= 0)
+ {
+ int mode = O_RDONLY;
+#ifdef O_CLOEXEC
+ mode |= O_CLOEXEC;
+#endif
+ fd = openat64_not_cancel_3 (fd, "..", mode);
+ }
+ else
+ fd = -1;
+ if (fd >= 0)
+ {
+ fd_needs_closing = true;
+ if (__fstat64 (fd, &st) < 0)
+ goto lose;
+ }
+#ifndef __ASSUME_ATFCTS
+ else if (errno == ENOSYS)
+ {
+ __have_atfcts = -1;
+
+ /* Look at the parent directory. */
+ if (dotp == dotlist)
+ {
+# ifdef NO_ALLOCATION
+ __set_errno (ENOMEM);
+ goto lose;
+# else
+ /* My, what a deep directory tree you have, Grandma. */
+ char *new;
+ if (dotlist == dots)
+ {
+ new = malloc (dotsize * 2 + 1);
+ if (new == NULL)
+ goto lose;
+# ifdef HAVE_MEMPCPY
+ dotp = mempcpy (new, dots, dotsize);
+# else
+ memcpy (new, dots, dotsize);
+ dotp = &new[dotsize];
+# endif
+ }
+ else
+ {
+ new = realloc ((__ptr_t) dotlist, dotsize * 2 + 1);
+ if (new == NULL)
+ goto lose;
+ dotp = &new[dotsize];
+ }
+# ifdef HAVE_MEMPCPY
+ *((char *) mempcpy ((char *) dotp, new, dotsize)) = '\0';
+ dotsize *= 2;
+# else
+ memcpy ((char *) dotp, new, dotsize);
+ dotsize *= 2;
+ new[dotsize] = '\0';
+# endif
+ dotlist = new;
+# endif
+ }
+
+ dotp -= 3;
+
+ /* Figure out if this directory is a mount point. */
+ if (__lstat64 (dotp, &st) < 0)
+ goto lose;
+ }
+#endif
+ else
+ goto lose;
+
+ if (dirstream && __closedir (dirstream) != 0)
+ {
+ dirstream = NULL;
+ goto lose;
+ }
+
+ dev_t dotdev = st.st_dev;
+ ino_t dotino = st.st_ino;
+ bool mount_point = dotdev != thisdev;
+
+ /* Search for the last directory. */
+ if (__have_atfcts >= 0)
+ dirstream = __fdopendir (fd);
+#ifndef __ASSUME_ATFCTS
+ else
+ dirstream = __opendir (dotp);
+#endif
+ if (dirstream == NULL)
+ goto lose;
+ fd_needs_closing = false;
+
+ struct dirent *d;
+ bool use_d_ino = true;
+ while (1)
+ {
+ /* Clear errno to distinguish EOF from error if readdir returns
+ NULL. */
+ __set_errno (0);
+ d = __readdir (dirstream);
+ if (d == NULL)
+ {
+ if (errno == 0)
+ {
+ /* When we've iterated through all directory entries
+ without finding one with a matching d_ino, rewind the
+ stream and consider each name again, but this time, using
+ lstat64. This is necessary in a chroot on at least one
+ system. */
+ if (use_d_ino)
+ {
+ use_d_ino = false;
+ __rewinddir (dirstream);
+ continue;
+ }
+
+ /* EOF on dirstream, which means that the current directory
+ has been removed. */
+ __set_errno (ENOENT);
+ }
+ goto lose;
+ }
+
+#ifdef _DIRENT_HAVE_D_TYPE
+ if (d->d_type != DT_DIR && d->d_type != DT_UNKNOWN)
+ continue;
+#endif
+ if (d->d_name[0] == '.'
+ && (d->d_name[1] == '\0'
+ || (d->d_name[1] == '.' && d->d_name[2] == '\0')))
+ continue;
+ if (use_d_ino && !mount_point && (ino_t) d->d_ino != thisino)
+ continue;
+
+ if (__have_atfcts >= 0)
+ {
+ /* We don't fail here if we cannot stat64() a directory entry.
+ This can happen when (network) filesystems fail. If this
+ entry is in fact the one we are looking for we will find
+ out soon as we reach the end of the directory without
+ having found anything. */
+ if (__fstatat64 (fd, d->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
+ continue;
+ }
+#ifndef __ASSUME_ATFCTS
+ else
+ {
+ char name[dotlist + dotsize - dotp + 1 + _D_ALLOC_NAMLEN (d)];
+# ifdef HAVE_MEMPCPY
+ char *tmp = mempcpy (name, dotp, dotlist + dotsize - dotp);
+ *tmp++ = '/';
+ strcpy (tmp, d->d_name);
+# else
+ memcpy (name, dotp, dotlist + dotsize - dotp);
+ name[dotlist + dotsize - dotp] = '/';
+ strcpy (&name[dotlist + dotsize - dotp + 1], d->d_name);
+# endif
+ /* We don't fail here if we cannot stat64() a directory entry.
+ This can happen when (network) filesystems fail. If this
+ entry is in fact the one we are looking for we will find
+ out soon as we reach the end of the directory without
+ having found anything. */
+ if (__lstat64 (name, &st) < 0)
+ continue;
+ }
+#endif
+ if (S_ISDIR (st.st_mode)
+ && st.st_dev == thisdev && st.st_ino == thisino)
+ break;
+ }
+
+ size_t namlen = _D_EXACT_NAMLEN (d);
+
+ if ((size_t) (pathp - path) <= namlen)
+ {
+#ifndef NO_ALLOCATION
+ if (size == 0)
+ {
+ size_t oldsize = allocated;
+
+ allocated = 2 * MAX (allocated, namlen);
+ char *tmp = realloc (path, allocated);
+ if (tmp == NULL)
+ goto lose;
+
+ /* Move current contents up to the end of the buffer.
+ This is guaranteed to be non-overlapping. */
+ pathp = memcpy (tmp + allocated - (path + oldsize - pathp),
+ tmp + (pathp - path),
+ path + oldsize - pathp);
+ path = tmp;
+ }
+ else
+#endif
+ {
+ __set_errno (ERANGE);
+ goto lose;
+ }
+ }
+ pathp -= namlen;
+ (void) memcpy (pathp, d->d_name, namlen);
+ *--pathp = '/';
+
+ thisdev = dotdev;
+ thisino = dotino;
+ }
+
+ if (dirstream != NULL && __closedir (dirstream) != 0)
+ {
+ dirstream = NULL;
+ goto lose;
+ }
+
+ if (pathp == &path[allocated - 1])
+ *--pathp = '/';
+
+#ifndef __ASSUME_ATFCTS
+ if (dotlist != dots)
+ free ((__ptr_t) dotlist);
+#endif
+
+ size_t used = path + allocated - pathp;
+ memmove (path, pathp, used);
+
+ if (size == 0)
+ /* Ensure that the buffer is only as large as necessary. */
+ buf = realloc (path, used);
+
+ if (buf == NULL)
+ /* Either buf was NULL all along, or `realloc' failed but
+ we still have the original string. */
+ buf = path;
+
+ /* Restore errno on successful return. */
+ __set_errno (prev_errno);
+
+ return buf;
+
+ lose:;
+ int save_errno = errno;
+#ifndef __ASSUME_ATFCTS
+ if (dotlist != dots)
+ free ((__ptr_t) dotlist);
+#endif
+ if (dirstream != NULL)
+ __closedir (dirstream);
+ if (fd_needs_closing)
+ close_not_cancel_no_status (fd);
+#ifndef NO_ALLOCATION
+ if (buf == NULL)
+ free (path);
+#endif
+ __set_errno (save_errno);
+ return NULL;
+}
+
+#if defined _LIBC && !defined __getcwd
+weak_alias (__getcwd, getcwd)
+#endif