Changes to the unix VFS that allegedly enable it to build of Fuchsia.

We have no way of testing this.

FossilOrigin-Name: be21a6416d47ff7db995006a0422b745044d9b8bb5bad3c53342aa6e2e524771

manifest

@@ -1,5 +1,5 @@
-C Disable\sunix-specific\sfeatures\sof\sdbfuzz2\swhen\scompiling\son\swindows.
-D 2019-02-20T19:06:16.881
+C Changes\sto\sthe\sunix\sVFS\sthat\sallegedly\senable\sit\sto\sbuild\sof\sFuchsia.\nWe\shave\sno\sway\sof\stesting\sthis.
+D 2019-02-20T19:20:16.043
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in 178d8eb6840771149cee40b322d1b3be30d330198c522c903c1b66fb5a1bfca4
@@ -499,7 +499,7 @@ F src/os.c 8aeb0b0f40f8f5b0da03fe49706695adaf42d2f516ab95abc72e86c245e119de
 F src/os.h 48388821692e87da174ea198bf96b1b2d9d83be5dfc908f673ee21fafbe0d432
 F src/os_common.h b2f4707a603e36811d9b1a13278bffd757857b85
 F src/os_setup.h 0dbaea40a7d36bf311613d31342e0b99e2536586
-F src/os_unix.c f6e91b8fd82af7afbfd073c4974ad6cdb8e62d9f65ceddb45167835a0567fdc0
+F src/os_unix.c 2b9604eb5c12f40a0613e832b6267f5814f84479d570d482ba6f98d7affa7c1c
 F src/os_win.c 85d9e532d0444ab6c16d7431490c2e279e282aa0917b0e988996b1ae0de5c5a0
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
 F src/pager.c 38022624ac9fba1f601d3068d7c393fcc909727fccab556242c93d9c7897b640
@@ -1805,7 +1805,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P c48f6f39c5f89a338fed7153553a27a5d882d4d8db8221e911b96e0dd57c53d9
-R c53acd05ed5644e7475bccbd6fd360d7
+P af84774d1eebcfe6a61b564b4edf280ad3c3a93f39b7f70b6fcc56f7bbdfb9eb
+R a6f27facbdb7dc40d5575aa8c5ace55a
 U drh
-Z 28f4d380ceac9c7278e8092207ce3937
+Z ca0997b8ac8e61eb0d0c0b024412021b

manifest.uuid

@@ -1 +1 @@
-af84774d1eebcfe6a61b564b4edf280ad3c3a93f39b7f70b6fcc56f7bbdfb9eb
+be21a6416d47ff7db995006a0422b745044d9b8bb5bad3c53342aa6e2e524771

src/os_unix.c

@@ -7822,6 +7822,9 @@ int sqlite3_os_init(void){
     UNIXVFS("unix",          autolockIoFinder ),
 #elif OS_VXWORKS
     UNIXVFS("unix",          vxworksIoFinder ),
+#elif __Fuchsia__
+    /* We are told that Fuchsia only supports dot-file locking */
+    UNIXVFS("unix",          dotlockIoFinder ),
 #else
     UNIXVFS("unix",          posixIoFinder ),
 #endif