Adapted from Debian: https://sources.debian.org/patches/sqlite3/3.32.3-1/20-hurd-locking-style.patch
Upstream status: Not upstreamed.

This patch is needed to get offloading to work.

Sqlite can use simple file locking mode, but that does not work for the Hurd;
a second sqlite process fails with a "locking protocol" error.

See also: https://bugs.debian.org/529734.

diff -purN sqlite-autoconf-3310100/sqlite3.c sqlite-autoconf-3310100-/sqlite3.c
--- sqlite-autoconf-3310100/sqlite3.c	2020-01-27 21:25:19.000000000 +0100
+++ sqlite-autoconf-3310100-/sqlite3.c	2020-07-01 11:50:13.768333806 +0200
@@ -33189,7 +33189,7 @@ SQLITE_PRIVATE const char *sqlite3Opcode
 # include <sys/mman.h>
 #endif
 
-#if SQLITE_ENABLE_LOCKING_STYLE
+#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
 /* # include <sys/ioctl.h> */
 # include <sys/file.h>
 # include <sys/param.h>
@@ -35676,7 +35676,7 @@ static int dotlockClose(sqlite3_file *id
 **
 ** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off
 */
-#if SQLITE_ENABLE_LOCKING_STYLE
+#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
 
 /*
 ** Retry flock() calls that fail with EINTR
@@ -38586,7 +38586,7 @@ IOMETHODS(
   0                         /* xShmMap method */
 )
 
-#if SQLITE_ENABLE_LOCKING_STYLE
+#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
 IOMETHODS(
   flockIoFinder,            /* Finder function name */
   flockIoMethods,           /* sqlite3_io_methods object name */
@@ -41142,6 +41142,8 @@ SQLITE_API int sqlite3_os_init(void){
     UNIXVFS("unix",          autolockIoFinder ),
 #elif OS_VXWORKS
     UNIXVFS("unix",          vxworksIoFinder ),
+#elif defined(__GNU__)
+    UNIXVFS("unix",          flockIoFinder ),
 #else
     UNIXVFS("unix",          posixIoFinder ),
 #endif
@@ -41151,7 +41153,7 @@ SQLITE_API int sqlite3_os_init(void){
 #if OS_VXWORKS
     UNIXVFS("unix-namedsem", semIoFinder ),
 #endif
-#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
+#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS || defined(__GNU__)
     UNIXVFS("unix-posix",    posixIoFinder ),
 #endif
 #if SQLITE_ENABLE_LOCKING_STYLE
xt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>root</a>/<a href='/guix/log/gnu?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>gnu</a>/<a href='/guix/log/gnu/packages?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>packages</a>/<a href='/guix/log/gnu/packages/aux-files?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>aux-files</a>/<a href='/guix/log/gnu/packages/aux-files/linux-libre?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>linux-libre</a>/<a href='/guix/log/gnu/packages/aux-files/linux-libre/6.6-arm.conf?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be'>6.6-arm.conf</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/aux-files/linux-libre/6.6-arm.conf?id=a72c6ba19a51a3eed9c7198f4b358849dd7543be&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-07-23 22:26:01 -0400'>2023-07-23</span></td><td><a href='/guix/commit/gnu/packages/aux-files/linux-libre/6.6-arm.conf?id=b817d261e2f9addba594583e154e4d9b6a850928'>gnu: Add linux-libre 6.6.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/linux.scm (linux-libre-6.6-version, linux-libre-6.6-gnu-revision,
deblob-scripts-6.6, linux-libre-6.6-pristine-source, linux-libre-6.5-source,
linux-libre-headers-6.6, linux-libre-6.6): New variables.
* gnu/packages/aux-files/linux-libre/6.6-arm.conf,
gnu/packages/aux-files/linux-libre/6.6-arm64.conf,
gnu/packages/aux-files/linux-libre/6.6-i686.conf,
gnu/packages/aux-files/linux-libre/6.6-x86_64.conf: New files.
* Makefile.am (AUX_FILES): Add them.

Change-Id: I37b2b98b8a2ec745137e92380f34e69082c5e662
Signed-off-by: Leo Famulari &lt;leo@famulari.name&gt;
</span></span></td><td>Wilko Meyer</td></tr>