Complay with the spirit, if not the letter of the GNU sparse file rule.
diff --git a/libarchive/archive_write_set_format_pax.c b/libarchive/archive_write_set_format_pax.c
index 6a301ac..5fdfd9d 100644
--- a/libarchive/archive_write_set_format_pax.c
+++ b/libarchive/archive_write_set_format_pax.c
@@ -1650,13 +1650,14 @@
* GNU PAX Format 1.0 requires the special name, which pattern is:
* <dir>/GNUSparseFile.<pid>/<original file name>
*
+ * Since reproducable archives are more important, use 0 as pid.
+ *
* This function is used for only Sparse file, a file type of which
* is regular file.
*/
static char *
build_gnu_sparse_name(char *dest, const char *src)
{
- char buff[64];
const char *p;
/* Handle the null filename case. */
@@ -1682,15 +1683,9 @@
break;
}
-#if HAVE_GETPID && 0 /* Disable this as pax attribute name. */
- sprintf(buff, "GNUSparseFile.%d", getpid());
-#else
- /* If the platform can't fetch the pid, don't include it. */
- strcpy(buff, "GNUSparseFile");
-#endif
/* General case: build a ustar-compatible name adding
* "/GNUSparseFile/". */
- build_ustar_entry_name(dest, src, p - src, buff);
+ build_ustar_entry_name(dest, src, p - src, "GNUSparseFile.0");
return (dest);
}
