database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-07-29 08:01:23 +03:00
Code Activity

Add delete-before-open=1 URI flag to the 'opfs' VFS to tell it to xDelete the db file before opening it, primarily to enable users to work around a corrupt db without having to reach into OPFS-specific APIs to remove the db file.

Browse Source 
FossilOrigin-Name: e83f9788636f7f9bcca7d2a09620c13ab4eb83436d5b2946a827e48addf0267d
This commit is contained in:
stephan
2024-03-11 09:32:38 +00:00
parent 5007833f5f
commit bf030d53b1
5 changed files with 60 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
ext/wasm/api/sqlite3-opfs-async-proxy.js
View File

@ -562,6 +562,17 @@ const installAsyncProxy = function(self){
wTimeEnd();
return;
}
if( state.opfsFlags.OPFS_UNLINK_BEFORE_OPEN & opfsFlags ){
//log("async proxy opfsFlags =",opfsFlags);
try{
await hDir.removeEntry(filenamePart);
//log("Unlinked",filename,hDir,filenamePart);
}
catch(e){
/* ignoring */
//warn("Ignoring failed Unlink of",filename,":",e);
}
}
const hFile = await hDir.getFileHandle(filenamePart, {create});
wTimeEnd();
const fh = Object.assign(Object.create(null),{

18
ext/wasm/api/sqlite3-vfs-opfs.c-pp.js
View File

@ -423,10 +423,18 @@ const installOpfsVfs = function callee(options){
});
state.opfsFlags = Object.assign(Object.create(null),{
/**
Flag for use with xOpen(). "opfs-unlock-asap=1" enables
this. See defaultUnlockAsap, below.
Flag for use with xOpen(). URI flag "opfs-unlock-asap=1"
enables this. See defaultUnlockAsap, below.
*/
OPFS_UNLOCK_ASAP: 0x01,
/**
Flag for use with xOpen(). URI flag "delete-before-open=1"
tells the VFS to delete the db file before attempting to open
it. This can be used, e.g., to replace a db which has been
corrupted (without forcing us to expose a delete/unlink()
function in the public API).
*/
OPFS_UNLINK_BEFORE_OPEN: 0x02,
/**
If true, any async routine which implicitly acquires a sync
access handle (i.e. an OPFS lock) will release that locks at
@ -875,13 +883,17 @@ const installOpfsVfs = function callee(options){
let opfsFlags = 0;
if(0===zName){
zName = randomFilename();
}else if('number'===typeof zName){
}else if(wasm.isPtr(zName)){
if(capi.sqlite3_uri_boolean(zName, "opfs-unlock-asap", 0)){
/* -----------------------^^^^^ MUST pass the untranslated
C-string here. */
opfsFlags |= state.opfsFlags.OPFS_UNLOCK_ASAP;
}
if(capi.sqlite3_uri_boolean(zName, "delete-before-open", 0)){
opfsFlags |= state.opfsFlags.OPFS_UNLINK_BEFORE_OPEN;
}
zName = wasm.cstrToJs(zName);
//warn("xOpen zName =",zName, "opfsFlags =",opfsFlags);
}
const fh = Object.create(null);
fh.fid = pFile;