(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 34 insertions, 114 deletions

diff --git a/io/ftw.c b/io/ftw.c
index 5495bc7ecc..7610851047 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -1,5 +1,5 @@
 /* File tree walker functions.
-   Copyright (C) 1996-2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 1996-2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -36,7 +36,7 @@ char *alloca ();
 # endif
 #endif
 
-#ifdef _LIBC
+#if defined _LIBC
 # include <dirent.h>
 # define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)
 #else
@@ -59,14 +59,12 @@ char *alloca ();
 #endif
 
 #include <errno.h>
-#include <fcntl.h>
 #include <ftw.h>
 #include <limits.h>
 #include <search.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <not-cancel.h>
 #if HAVE_SYS_PARAM_H || defined _LIBC
 # include <sys/param.h>
 #endif
@@ -144,11 +142,9 @@ int rpl_lstat (const char *, struct stat *);
 # ifdef _LIBC
 #  define LXSTAT __lxstat
 #  define XSTAT __xstat
-#  define FXSTATAT __fxstatat
 # else
 #  define LXSTAT(V,f,sb) lstat (f,sb)
 #  define XSTAT(V,f,sb) stat (f,sb)
-#  define FXSTATAT(V,d,f,sb,m) fstatat (d, f, sb, m)
 # endif
 # define FTW_FUNC_T __ftw_func_t
 # define NFTW_FUNC_T __nftw_func_t
@@ -165,7 +161,6 @@ int rpl_lstat (const char *, struct stat *);
 struct dir_data
 {
   DIR *stream;
-  int streamfd;
   char *content;
 };
 
@@ -267,7 +262,7 @@ find_object (struct ftw_data *data, struct STAT *st)
 
 static inline int
 __attribute ((always_inline))
-open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
+open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
 {
   int result = 0;
 
@@ -301,7 +296,8 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
 		      int save_err = errno;
 		      free (buf);
 		      __set_errno (save_err);
-		      return -1;
+		      result = -1;
+		      break;
 		    }
 		  buf = newp;
 		}
@@ -327,7 +323,6 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
 	    {
 	      __closedir (st);
 	      data->dirstreams[data->actdir]->stream = NULL;
-	      data->dirstreams[data->actdir]->streamfd = -1;
 	      data->dirstreams[data->actdir] = NULL;
 	    }
 	}
@@ -336,37 +331,15 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
   /* Open the new stream.  */
   if (result == 0)
     {
+      const char *name = ((data->flags & FTW_CHDIR)
+			  ? data->dirbuf + data->ftw.base: data->dirbuf);
       assert (data->dirstreams[data->actdir] == NULL);
 
-      if (dfdp != NULL && *dfdp != -1)
-	{
-	  int fd = openat64_not_cancel_3 (*dfdp, data->dirbuf + data->ftw.base,
-					  O_RDONLY | O_DIRECTORY | O_NDELAY);
-	  dirp->stream = NULL;
-	  if (fd != -1 && (dirp->stream = __fdopendir (fd)) == NULL)
-	    close_not_cancel_no_status (fd);
-	}
-      else
-	{
-	  const char *name;
-
-	  if (data->flags & FTW_CHDIR)
-	    {
-	      name = data->dirbuf + data->ftw.base;
-	      if (name[0] == '\0')
-		name = ".";
-	    }
-	  else
-	    name = data->dirbuf;
-
-	  dirp->stream = __opendir (name);
-	}
-
+      dirp->stream = __opendir (name);
       if (dirp->stream == NULL)
 	result = -1;
       else
 	{
-	  dirp->streamfd = dirfd (dirp->stream);
 	  dirp->content = NULL;
 	  data->dirstreams[data->actdir] = dirp;
 
@@ -382,7 +355,7 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
 static int
 internal_function
 process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
-	       size_t namlen, int d_type)
+	       size_t namlen)
 {
   struct STAT st;
   int result = 0;
@@ -409,40 +382,21 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
 
   *((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
 
-  int statres;
-  if (dir->streamfd != -1)
-    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
-			(data->flags & FTW_PHYS) ? AT_SYMLINK_NOFOLLOW : 0);
-  else
-    {
-      if ((data->flags & FTW_CHDIR) == 0)
-	name = data->dirbuf;
+  if ((data->flags & FTW_CHDIR) == 0)
+    name = data->dirbuf;
 
-      statres = ((data->flags & FTW_PHYS)
-		 ? LXSTAT (_STAT_VER, name, &st)
-		 : XSTAT (_STAT_VER, name, &st));
-    }
-
-  if (statres < 0)
+  if (((data->flags & FTW_PHYS)
+       ? LXSTAT (_STAT_VER, name, &st)
+       : XSTAT (_STAT_VER, name, &st)) < 0)
     {
       if (errno != EACCES && errno != ENOENT)
 	result = -1;
-      else if (data->flags & FTW_PHYS)
-	flag = FTW_NS;
-      else if (d_type == DT_LNK)
+      else if (!(data->flags & FTW_PHYS)
+	       && LXSTAT (_STAT_VER, name, &st) == 0
+	       && S_ISLNK (st.st_mode))
 	flag = FTW_SLN;
       else
-	{
-	  if (dir->streamfd != -1)
-	    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
-				AT_SYMLINK_NOFOLLOW);
-	  else
-	    statres = LXSTAT (_STAT_VER, name, &st);
-	  if (statres == 0 && S_ISLNK (st.st_mode))
-	    flag = FTW_SLN;
-	  else
-	    flag = FTW_NS;
-	}
+	flag = FTW_NS;
     }
   else
     {
@@ -491,8 +445,7 @@ ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
 
   /* Open the stream for this directory.  This might require that
      another stream has to be closed.  */
-  result = open_dir_stream (old_dir == NULL ? NULL : &old_dir->streamfd,
-			    data, &dir);
+  result = open_dir_stream (data, &dir);
   if (result != 0)
     {
       if (errno == EACCES)
@@ -512,7 +465,6 @@ ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
 fail:
 	  save_err = errno;
 	  __closedir (dir.stream);
-	  dir.streamfd = -1;
 	  __set_errno (save_err);
 
 	  if (data->actdir-- == 0)
@@ -534,7 +486,7 @@ fail:
 
   /* Next, update the `struct FTW' information.  */
   ++data->ftw.level;
-  startp = __rawmemchr (data->dirbuf, '\0');
+  startp = strchr (data->dirbuf, '\0');
   /* There always must be a directory name.  */
   assert (startp != data->dirbuf);
   if (startp[-1] != '/')
@@ -543,7 +495,7 @@ fail:
 
   while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
     {
-      result = process_entry (data, &dir, d->d_name, NAMLEN (d), d->d_type);
+      result = process_entry (data, &dir, d->d_name, NAMLEN (d));
       if (result != 0)
 	break;
     }
@@ -557,7 +509,6 @@ fail:
       assert (dir.content == NULL);
 
       __closedir (dir.stream);
-      dir.streamfd = -1;
       __set_errno (save_err);
 
       if (data->actdir-- == 0)
@@ -573,8 +524,7 @@ fail:
 	{
 	  char *endp = strchr (runp, '\0');
 
-	  // XXX Should store the d_type values as well?!
-	  result = process_entry (data, &dir, runp, endp - runp, DT_UNKNOWN);
+	  result = process_entry (data, &dir, runp, endp - runp);
 
 	  runp = endp + 1;
 	}
@@ -635,7 +585,6 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
   struct STAT st;
   int result = 0;
   int save_err;
-  int cwdfd = -1;
   char *cwd = NULL;
   char *cp;
 
@@ -690,26 +639,11 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
   /* Now go to the directory containing the initial file/directory.  */
   if (flags & FTW_CHDIR)
     {
-      /* We have to be able to go back to the current working
-	 directory.  The best way to do this is to use a file
-	 descriptor.  */
-      cwdfd = __open (".", O_RDONLY | O_DIRECTORY);
-      if (cwdfd == -1)
-	{
-	  /* Try getting the directory name.  This can be needed if
-	     the current directory is executable but not readable.  */
-	  if (errno == EACCES)
-	    /* GNU extension ahead.  */
-	    cwd =  __getcwd (NULL, 0);
-
-	  if (cwd == NULL)
-	    goto out_fail;
-	}
-      else if (data.maxdir > 1)
-	/* Account for the file descriptor we use here.  */
-	--data.maxdir;
-
-      if (data.ftw.base > 0)
+      /* GNU extension ahead.  */
+      cwd =  __getcwd (NULL, 0);
+      if (cwd == NULL)
+	result = -1;
+      else if (data.ftw.base > 0)
 	{
 	  /* Change to the directory the file is in.  In data.dirbuf
 	     we have a writable copy of the file name.  Just NUL
@@ -730,16 +664,9 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
   /* Get stat info for start directory.  */
   if (result == 0)
     {
-      const char *name;
-
-      if (data.flags & FTW_CHDIR)
-	{
-	  name = data.dirbuf + data.ftw.base;
-	  if (name[0] == '\0')
-	    name = ".";
-	}
-      else
-	name = data.dirbuf;
+      const char *name = ((data.flags & FTW_CHDIR)
+			  ? data.dirbuf + data.ftw.base
+			  : data.dirbuf);
 
       if (((flags & FTW_PHYS)
 	   ? LXSTAT (_STAT_VER, name, &st)
@@ -786,13 +713,7 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
     }
 
   /* Return to the start directory (if necessary).  */
-  if (cwdfd != -1)
-    {
-      int save_err = errno;
-      __fchdir (cwdfd);
-      __set_errno (save_err);
-    }
-  else if (cwd != NULL)
+  if (cwd != NULL)
     {
       int save_err = errno;
       __chdir (cwd);
@@ -801,7 +722,6 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
     }
 
   /* Free all memory.  */
- out_fail:
   save_err = errno;
   __tdestroy (data.known_objects, free);
   free (data.dirbuf);
@@ -835,7 +755,7 @@ NFTW_NAME (path, func, descriptors, flags)
 }
 #else
 
-# include <shlib-compat.h>
+#include <shlib-compat.h>
 
 int NFTW_NEW_NAME (const char *, NFTW_FUNC_T, int, int);
 
@@ -857,7 +777,7 @@ NFTW_NEW_NAME (path, func, descriptors, flags)
 
 versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);
 
-# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
 
 /* Older nftw* version just ignored all unknown flags.  */
 
@@ -876,5 +796,5 @@ NFTW_OLD_NAME (path, func, descriptors, flags)
 }
 
 compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
-# endif
+#endif
 #endif