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| author | drh <> | 2024-11-13 14:58:35 +0000 |
|---|---|---|
| committer | drh <> | 2024-11-13 14:58:35 +0000 |
| commit | 1b37bc0e668a0bfefbd0a71bdcae25017b29b5fa (patch) | |
| tree | f85ba0a7001f0078b18b39c0673a5bca7e9f0860 /src | |
| parent | 92e9fa6fe887fc5cad73b4251ce06e295d7a0d2c (diff) | |
| download | sqlite-1b37bc0e668a0bfefbd0a71bdcae25017b29b5fa.tar.gz sqlite-1b37bc0e668a0bfefbd0a71bdcae25017b29b5fa.zip | |
Add the SQLITE_FCNTL_NULL_IO file-control.
FossilOrigin-Name: f0e917fcf51b59f8ccfe5b9341937341d0e6016eb275d6c33dcb10b0b301a9da
Diffstat (limited to 'src')
| -rw-r--r-- | src/os_unix.c | 5 | ||||
| -rw-r--r-- | src/os_win.c | 5 | ||||
| -rw-r--r-- | src/sqlite.h.in | 6 |
3 files changed, 16 insertions, 0 deletions
diff --git a/src/os_unix.c b/src/os_unix.c index 8cc188674..b1996278c 100644 --- a/src/os_unix.c +++ b/src/os_unix.c @@ -3987,6 +3987,11 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ } #endif /* __linux__ && SQLITE_ENABLE_BATCH_ATOMIC_WRITE */ + case SQLITE_FCNTL_NULL_IO: { + osClose(pFile->h); + pFile->h = -1; + return SQLITE_OK; + } case SQLITE_FCNTL_LOCKSTATE: { *(int*)pArg = pFile->eFileLock; return SQLITE_OK; diff --git a/src/os_win.c b/src/os_win.c index 97743412e..4d245263f 100644 --- a/src/os_win.c +++ b/src/os_win.c @@ -3599,6 +3599,11 @@ static int winFileControl(sqlite3_file *id, int op, void *pArg){ return SQLITE_OK; } #endif + case SQLITE_FCNTL_NULL_IO: { + (void)osCloseHandle(pFile->h); + pFile->h = NULL; + return SQLITE_OK; + } case SQLITE_FCNTL_TEMPFILENAME: { char *zTFile = 0; int rc = winGetTempname(pFile->pVfs, &zTFile); diff --git a/src/sqlite.h.in b/src/sqlite.h.in index df1493b66..b84938b45 100644 --- a/src/sqlite.h.in +++ b/src/sqlite.h.in @@ -1100,6 +1100,11 @@ struct sqlite3_io_methods { ** pointed to by the pArg argument. This capability is used during testing ** and only needs to be supported when SQLITE_TEST is defined. ** +** <li>[[SQLITE_FCNTL_NULL_IO]] +** The [SQLITE_FCNTL_NULL_IO] opcode sets the low-level file descriptor +** or file handle for the [sqlite3_file] object such that it will no longer +** read or write to the database file. +** ** <li>[[SQLITE_FCNTL_WAL_BLOCK]] ** The [SQLITE_FCNTL_WAL_BLOCK] is a signal to the VFS layer that it might ** be advantageous to block on the next WAL lock if the lock is not immediately @@ -1253,6 +1258,7 @@ struct sqlite3_io_methods { #define SQLITE_FCNTL_EXTERNAL_READER 40 #define SQLITE_FCNTL_CKSM_FILE 41 #define SQLITE_FCNTL_RESET_CACHE 42 +#define SQLITE_FCNTL_NULL_IO 43 /* deprecated names */ #define SQLITE_GET_LOCKPROXYFILE SQLITE_FCNTL_GET_LOCKPROXYFILE |