Merge #179109: coreutils: reintroduce patch disabling SEEK_HOLE

...into staging

pkgs/tools/misc/coreutils/default.nix

@@ -39,6 +39,11 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-YaH0ENeLp+fzelpPUObRMgrKMzdUhKMlXt3xejhYBCM=";
   };
 
+  patches = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    # Workaround for https://debbugs.gnu.org/cgi/bugreport.cgi?bug=51433
+    ./disable-seek-hole.patch
+  ];
+
   postPatch = ''
     # The test tends to fail on btrfs, f2fs and maybe other unusual filesystems.
     sed '2i echo Skipping dd sparse test && exit 77' -i ./tests/dd/sparse.sh

pkgs/tools/misc/coreutils/disable-seek-hole.patch

@@ -0,0 +1,43 @@
+diff --git a/src/copy.c b/src/copy.c
+index cb9018f93..2a4ccc061 100644
+--- a/src/copy.c
++++ b/src/copy.c
+@@ -502,7 +502,7 @@ write_zeros (int fd, off_t n_bytes)
+   return true;
+ }
+
+-#ifdef SEEK_HOLE
++#if 0
+ /* Perform an efficient extent copy, if possible.  This avoids
+    the overhead of detecting holes in hole-introducing/preserving
+    copy, and thus makes copying sparse files much more efficient.
+@@ -1095,7 +1095,7 @@ infer_scantype (int fd, struct stat const *sb,
+          && ST_NBLOCKS (*sb) < sb->st_size / ST_NBLOCKSIZE))
+     return PLAIN_SCANTYPE;
+
+-#ifdef SEEK_HOLE
++#if 0
+   scan_inference->ext_start = lseek (fd, 0, SEEK_DATA);
+   if (0 <= scan_inference->ext_start)
+     return LSEEK_SCANTYPE;
+@@ -1377,7 +1377,7 @@ copy_reg (char const *src_name, char const *dst_name,
+       off_t n_read;
+       bool wrote_hole_at_eof = false;
+       if (! (
+-#ifdef SEEK_HOLE
++#if 0
+              scantype == LSEEK_SCANTYPE
+              ? lseek_copy (source_desc, dest_desc, buf, buf_size, hole_size,
+                            scan_inference.ext_start, src_open_sb.st_size,
+diff --git a/tests/seek-data-capable b/tests/seek-data-capable
+index cc6372214..6e7a9ec1e 100644
+--- a/tests/seek-data-capable
++++ b/tests/seek-data-capable
+@@ -1,5 +1,7 @@
+ import sys, os, errno, platform
+
++sys.exit(1)
++
+ # Pass an _empty_ file
+ if len(sys.argv) != 2:
+     sys.exit(1)