Remove from CVS, since the bootstrap script generates them automatically.

1 files changed, 0 insertions, 337 deletions

diff --git a/lib/utimecmp.c b/lib/utimecmp.c
deleted file mode 100644
index 9d07e9fd3..000000000
--- a/lib/utimecmp.c
+++ /dev/null
@@ -1,337 +0,0 @@
-/* utimecmp.c -- compare file time stamps
-
-   Copyright (C) 2004, 2005 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 2, 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, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Paul Eggert.  */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "utimecmp.h"
-
-#if HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
-#if HAVE_STDINT_H
-# include <stdint.h>
-#endif
-
-#include <limits.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include "hash.h"
-#include "intprops.h"
-#include "stat-time.h"
-#include "timespec.h"
-#include "utimens.h"
-#include "verify.h"
-#include "xalloc.h"
-
-#ifndef MAX
-# define MAX(a, b) ((a) > (b) ? (a) : (b))
-#endif
-
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
-enum { BILLION = 1000 * 1000 * 1000 };
-
-/* Best possible resolution that utimens can set and stat can return,
-   due to system-call limitations.  It must be a power of 10 that is
-   no greater than 1 billion.  */
-#if (HAVE_WORKING_UTIMES					\
-     && (defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC		\
-	 || defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC	\
-	 || defined HAVE_STRUCT_STAT_ST_ATIMENSEC		\
-	 || defined HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC	\
-	 || defined HAVE_STRUCT_STAT_ST_SPARE1))
-enum { SYSCALL_RESOLUTION = 1000 };
-#else
-enum { SYSCALL_RESOLUTION = BILLION };
-#endif
-
-/* Describe a file system and its time stamp resolution in nanoseconds.  */
-struct fs_res
-{
-  /* Device number of file system.  */
-  dev_t dev;
-
-  /* An upper bound on the time stamp resolution of this file system,
-     ignoring any resolution that cannot be set via utimens.  It is
-     represented by an integer count of nanoseconds.  It must be
-     either 2 billion, or a power of 10 that is no greater than a
-     billion and is no less than SYSCALL_RESOLUTION.  */
-  int resolution;
-
-  /* True if RESOLUTION is known to be exact, and is not merely an
-     upper bound on the true resolution.  */
-  bool exact;
-};
-
-/* Hash some device info.  */
-static size_t
-dev_info_hash (void const *x, size_t table_size)
-{
-  struct fs_res const *p = x;
-
-  /* Beware signed arithmetic gotchas.  */
-  if (TYPE_SIGNED (dev_t) && SIZE_MAX < MAX (INT_MAX, TYPE_MAXIMUM (dev_t)))
-    {
-      uintmax_t dev = p->dev;
-      return dev % table_size;
-    }
-
-  return p->dev % table_size;
-}
-
-/* Compare two dev_info structs.  */
-static bool
-dev_info_compare (void const *x, void const *y)
-{
-  struct fs_res const *a = x;
-  struct fs_res const *b = y;
-  return a->dev == b->dev;
-}
-
-/* Return -1, 0, 1 based on whether the destination file (with name
-   DST_NAME and status DST_STAT) is older than SRC_STAT, the same age
-   as SRC_STAT, or newer than SRC_STAT, respectively.
-
-   If OPTIONS & UTIMECMP_TRUNCATE_SOURCE, do the comparison after SRC is
-   converted to the destination's timestamp resolution as filtered through
-   utimens.  In this case, return -2 if the exact answer cannot be
-   determined; this can happen only if the time stamps are very close and
-   there is some trouble accessing the file system (e.g., the user does not
-   have permission to futz with the destination's time stamps).  */
-
-int
-utimecmp (char const *dst_name,
-	  struct stat const *dst_stat,
-	  struct stat const *src_stat,
-	  int options)
-{
-  /* Things to watch out for:
-
-     The code uses a static hash table internally and is not safe in the
-     presence of signals, multiple threads, etc.
-
-     int and long int might be 32 bits.  Many of the calculations store
-     numbers up to 2 billion, and multiply by 10; they have to avoid
-     multiplying 2 billion by 10, as this exceeds 32-bit capabilities.
-
-     time_t might be unsigned.  */
-
-  verify (TYPE_IS_INTEGER (time_t));
-  verify (TYPE_TWOS_COMPLEMENT (int));
-
-  /* Destination and source time stamps.  */
-  time_t dst_s = dst_stat->st_mtime;
-  time_t src_s = src_stat->st_mtime;
-  int dst_ns = get_stat_mtime_ns (dst_stat);
-  int src_ns = get_stat_mtime_ns (src_stat);
-
-  if (options & UTIMECMP_TRUNCATE_SOURCE)
-    {
-      /* Look up the time stamp resolution for the destination device.  */
-
-      /* Hash table for devices.  */
-      static Hash_table *ht;
-
-      /* Information about the destination file system.  */
-      static struct fs_res *new_dst_res;
-      struct fs_res *dst_res;
-
-      /* Time stamp resolution in nanoseconds.  */
-      int res;
-
-      if (! ht)
-	ht = hash_initialize (16, NULL, dev_info_hash, dev_info_compare, free);
-      if (! new_dst_res)
-	{
-	  new_dst_res = xmalloc (sizeof *new_dst_res);
-	  new_dst_res->resolution = 2 * BILLION;
-	  new_dst_res->exact = false;
-	}
-      new_dst_res->dev = dst_stat->st_dev;
-      dst_res = hash_insert (ht, new_dst_res);
-      if (! dst_res)
-	xalloc_die ();
-
-      if (dst_res == new_dst_res)
-	{
-	  /* NEW_DST_RES is now in use in the hash table, so allocate a
-	     new entry next time.  */
-	  new_dst_res = NULL;
-	}
-
-      res = dst_res->resolution;
-
-      if (! dst_res->exact)
-	{
-	  /* This file system's resolution is not known exactly.
-	     Deduce it, and store the result in the hash table.  */
-
-	  time_t dst_a_s = dst_stat->st_atime;
-	  time_t dst_c_s = dst_stat->st_ctime;
-	  time_t dst_m_s = dst_s;
-	  int dst_a_ns = get_stat_atime_ns (dst_stat);
-	  int dst_c_ns = get_stat_ctime_ns (dst_stat);
-	  int dst_m_ns = dst_ns;
-
-	  /* Set RES to an upper bound on the file system resolution
-	     (after truncation due to SYSCALL_RESOLUTION) by inspecting
-	     the atime, ctime and mtime of the existing destination.
-	     We don't know of any file system that stores atime or
-	     ctime with a higher precision than mtime, so it's valid to
-	     look at them too.  */
-	  {
-	    bool odd_second = (dst_a_s | dst_c_s | dst_m_s) & 1;
-
-	    if (SYSCALL_RESOLUTION == BILLION)
-	      {
-		if (odd_second | dst_a_ns | dst_c_ns | dst_m_ns)
-		  res = BILLION;
-	      }
-	    else
-	      {
-		int a = dst_a_ns;
-		int c = dst_c_ns;
-		int m = dst_m_ns;
-
-		/* Write it this way to avoid mistaken GCC warning
-		   about integer overflow in constant expression.  */
-		int SR10 = SYSCALL_RESOLUTION;  SR10 *= 10;
-
-		if ((a % SR10 | c % SR10 | m % SR10) != 0)
-		  res = SYSCALL_RESOLUTION;
-		else
-		  for (res = SR10, a /= SR10, c /= SR10, m /= SR10;
-		       (res < dst_res->resolution
-			&& (a % 10 | c % 10 | m % 10) == 0);
-		       res *= 10, a /= 10, c /= 10, m /= 10)
-		    if (res == BILLION)
-		      {
-			if (! odd_second)
-			  res *= 2;
-			break;
-		      }
-	      }
-
-	    dst_res->resolution = res;
-	  }
-
-	  if (SYSCALL_RESOLUTION < res)
-	    {
-	      struct timespec timespec[2];
-	      struct stat dst_status;
-
-	      /* Ignore source time stamp information that must necessarily
-		 be lost when filtered through utimens.  */
-	      src_ns -= src_ns % SYSCALL_RESOLUTION;
-
-	      /* If the time stamps disagree widely enough, there's no need
-		 to interrogate the file system to deduce the exact time
-		 stamp resolution; return the answer directly.  */
-	      {
-		time_t s = src_s & ~ (res == 2 * BILLION);
-		if (src_s < dst_s || (src_s == dst_s && src_ns <= dst_ns))
-		  return 1;
-		if (dst_s < s
-		    || (dst_s == s && dst_ns < src_ns - src_ns % res))
-		  return -1;
-	      }
-
-	      /* Determine the actual time stamp resolution for the
-		 destination file system (after truncation due to
-		 SYSCALL_RESOLUTION) by setting the access time stamp of the
-		 destination to the existing access time, except with
-		 trailing nonzero digits.  */
-
-	      timespec[0].tv_sec = dst_a_s;
-	      timespec[0].tv_nsec = dst_a_ns;
-	      timespec[1].tv_sec = dst_m_s | (res == 2 * BILLION);
-	      timespec[1].tv_nsec = dst_m_ns + res / 9;
-
-	      /* Set the modification time.  But don't try to set the
-		 modification time of symbolic links; on many hosts this sets
-		 the time of the pointed-to file.  */
-	      if (S_ISLNK (dst_stat->st_mode)
-		  || utimens (dst_name, timespec) != 0)
-		return -2;
-
-	      /* Read the modification time that was set.  It's safe to call
-		 'stat' here instead of worrying about 'lstat'; either the
-		 caller used 'stat', or the caller used 'lstat' and found
-		 something other than a symbolic link.  */
-	      {
-		int stat_result = stat (dst_name, &dst_status);
-
-		if (stat_result
-		    | (dst_status.st_mtime ^ dst_m_s)
-		    | (get_stat_mtime_ns (&dst_status) ^ dst_m_ns))
-		  {
-		    /* The modification time changed, or we can't tell whether
-		       it changed.  Change it back as best we can.  */
-		    timespec[1].tv_sec = dst_m_s;
-		    timespec[1].tv_nsec = dst_m_ns;
-		    utimens (dst_name, timespec);
-		  }
-
-		if (stat_result != 0)
-		  return -2;
-	      }
-
-	      /* Determine the exact resolution from the modification time
-		 that was read back.  */
-	      {
-		int old_res = res;
-		int a = (BILLION * (dst_status.st_mtime & 1)
-			 + get_stat_mtime_ns (&dst_status));
-
-		res = SYSCALL_RESOLUTION;
-
-		for (a /= res; a % 10 != 0; a /= 10)
-		  {
-		    if (res == BILLION)
-		      {
-			res *= 2;
-			break;
-		      }
-		    res *= 10;
-		    if (res == old_res)
-		      break;
-		  }
-	      }
-	    }
-
-	  dst_res->resolution = res;
-	  dst_res->exact = true;
-	}
-
-      /* Truncate the source's time stamp according to the resolution.  */
-      src_s &= ~ (res == 2 * BILLION);
-      src_ns -= src_ns % res;
-    }
-
-  /* Compare the time stamps and return -1, 0, 1 accordingly.  */
-  return (dst_s < src_s ? -1
-	  : dst_s > src_s ? 1
-	  : dst_ns < src_ns ? -1
-	  : dst_ns > src_ns);
-}