If a read() or pread() indicates that the database file is unreadable due to

filesystem damage, then it returns SQLITE_IOERR_CORRUPTFS which is then
converted into SQLITE_CORRUPT before being returned to the application.

FossilOrigin-Name: 849e4e14fd06eda512381f5f8aa65f75ad0a955e835da7c63526a53cf5e8f4dc

diff --cc manifest
index 4e629f4c1542840c36130d44474146d5ce8b137d,132a94b8ed38a067d8a02fbc717c1defb3d31bd8..9f2eb9489398019f2629b510c958e21fa1069556
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Update\scksumvfs.c\sso\sthat\sif\sSQLITE_AMALGAMATION\sis\sdefined,\sSQLITE_CKSUMVFS_STATIC\sis\simplied.
- D 2020-11-18T20:55:01.090
 -C Improvements\sto\sthe\smechanism\sthat\sattempts\sto\sreport\sSQLITE_CORRUPT\sif\npread()\ssays\sthat\sthe\sunderlying\sfilesystem\sis\scorrupt.
 -D 2020-11-18T21:50:05.460
++C If\sa\sread()\sor\spread()\sindicates\sthat\sthe\sdatabase\sfile\sis\sunreadable\sdue\sto\nfilesystem\sdamage,\sthen\sit\sreturns\sSQLITE_IOERR_CORRUPTFS\swhich\sis\sthen\nconverted\sinto\sSQLITE_CORRUPT\sbefore\sbeing\sreturned\sto\sthe\sapplication.
++D 2020-11-18T23:44:41.584
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -1885,7 -1885,7 +1885,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P 43d4801df5dc4625f6829ed8246758493842b2416ba609ee0423ef63155cece2
- R 819b2a35faf033f5ae6dd8bf0e39c618
- U dan
- Z 008d2a9a3f8427ff308e19cdcb995f1d
 -P 9538ea8447e7b07c05197d6ff2208d3e97b45798736c85b63e8f0c7a3a98c1f3
 -R 30998fa2d16edfdfc59fff25cd80e763
++P 184e9d782dfbad8011b5b0043b3fd8e5a369ed7076e37e14b301483ce5ffe5db b887c7504e7edeba758f3c1203c6cc56eef499fe05e7e6c6d82939bf7d78c57f
++R ca853ae029f53cda2f5e4e09a853497d
++T +closed b887c7504e7edeba758f3c1203c6cc56eef499fe05e7e6c6d82939bf7d78c57f
+ U drh
 -Z 5500fbcb6527afad35cae4db67b7be4a
++Z 9d8b812fa0a6ee7104c4c9d6ceb68cc7

diff --cc manifest.uuid
index 84a0c7409dadffb61d1cb1caf200808b8a020f06,e1246622aa0119ebdefb8baf37b36f60ddb83ccf..e272363bc486b56c9f0bc3aabb8379243c07d728
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 184e9d782dfbad8011b5b0043b3fd8e5a369ed7076e37e14b301483ce5ffe5db
 -b887c7504e7edeba758f3c1203c6cc56eef499fe05e7e6c6d82939bf7d78c57f
++849e4e14fd06eda512381f5f8aa65f75ad0a955e835da7c63526a53cf5e8f4dc