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Add the immutable=TRUE query parameter and SQLITE_IOCAP_IMMUTABLE, either

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of which prevents locking of the database and omits tests for existance
of journal files.

FossilOrigin-Name: 71f152c85d79ebd9ca48bc9c4c71fc4debaf2437
This commit is contained in:
drh
2014-05-01 01:13:08 +00:00
parent fb4c9242a5
commit d1ae96d39e
4 changed files with 41 additions and 32 deletions
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6
src/sqlite.h.in
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@@ -555,7 +555,10 @@ int sqlite3_exec(
** file that were written at the application level might have changed
** and that adjacent bytes, even bytes within the same sector are
** guaranteed to be unchanged. The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN
** flag indicate that a file cannot be deleted when open.
** flag indicate that a file cannot be deleted when open. The
** SQLITE_IOCAP_IMMUTABLE flag indicates that the file is on
** read-only media and cannot be changed even by processes with
** elevated privileges.
*/
#define SQLITE_IOCAP_ATOMIC 0x00000001
#define SQLITE_IOCAP_ATOMIC512 0x00000002
@@ -570,6 +573,7 @@ int sqlite3_exec(
#define SQLITE_IOCAP_SEQUENTIAL 0x00000400
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800
#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 0x00001000
#define SQLITE_IOCAP_IMMUTABLE 0x00002000
/*
** CAPI3REF: File Locking Levels