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

   1 diff --git a/src/copy.c b/src/copy.c
   2 index cb9018f93..2a4ccc061 100644
   3 --- a/src/copy.c
   4 +++ b/src/copy.c
   5 @@ -502,7 +502,7 @@ write_zeros (int fd, off_t n_bytes)
   6    return true;
   7  }
   8
   9 -#ifdef SEEK_HOLE
  10 +#if 0
  11  /* Perform an efficient extent copy, if possible.  This avoids
  12     the overhead of detecting holes in hole-introducing/preserving
  13     copy, and thus makes copying sparse files much more efficient.
  14 @@ -1095,7 +1095,7 @@ infer_scantype (int fd, struct stat const *sb,
  15           && ST_NBLOCKS (*sb) < sb->st_size / ST_NBLOCKSIZE))
  16      return PLAIN_SCANTYPE;
  17
  18 -#ifdef SEEK_HOLE
  19 +#if 0
  20    scan_inference->ext_start = lseek (fd, 0, SEEK_DATA);
  21    if (0 <= scan_inference->ext_start)
  22      return LSEEK_SCANTYPE;
  23 @@ -1377,7 +1377,7 @@ copy_reg (char const *src_name, char const *dst_name,
  24        off_t n_read;
  25        bool wrote_hole_at_eof = false;
  26        if (! (
  27 -#ifdef SEEK_HOLE
  28 +#if 0
  29               scantype == LSEEK_SCANTYPE
  30               ? lseek_copy (source_desc, dest_desc, buf, buf_size, hole_size,
  31                             scan_inference.ext_start, src_open_sb.st_size,
  32 diff --git a/tests/seek-data-capable b/tests/seek-data-capable
  33 index cc6372214..6e7a9ec1e 100644
  34 --- a/tests/seek-data-capable
  35 +++ b/tests/seek-data-capable
  36 @@ -1,5 +1,7 @@
  37  import sys, os, errno, platform
  38
  39 +sys.exit(1)
  40 +
  41  # Pass an _empty_ file
  42  if len(sys.argv) != 2:
  43      sys.exit(1)