search for: _trim_old

...(void *handle, uint32_t count, uint64_t offset); int (*zero) (void *handle, uint32_t count, uint64_t offset, int may_trim); +#else + int (*_pread_old) (void *, void *, uint32_t, uint64_t); + int (*_pwrite_old) (void *, const void *, uint32_t, uint64_t); + int (*_flush_old) (void *); + int (*_trim_old) (void *, uint32_t, uint64_t); + int (*_zero_old) (void *, uint32_t, uint64_t, int); +#endif int errno_is_preserved; void (*dump_plugin) (void); + int (*can_fua) (void *handle); +#if NBDKIT_API_VERSION == 1 + int (*_unused1) (void *, void *, uint32_t, uint64_t); + int (*_unused2) (void...

...on<extern fn (*mut c_void) -> c_int>, + pub can_trim: Option<extern fn (*mut c_void) -> c_int>, + + // Slots for old v1 API functions. + _pread_old: Option<extern fn ()>, + _pwrite_old: Option<extern fn ()>, + _flush_old: Option<extern fn ()>, + _trim_old: Option<extern fn ()>, + _zero_old: Option<extern fn ()>, + + errno_is_preserved: c_int, + + pub dump_plugin: Option<extern fn ()>, + + pub can_zero: Option<extern fn (*mut c_void) -> c_int>, + pub can_fua: Option<extern fn (*mut c_void) -> c_int>,...

I still don't have .prepare/.finalize working cleanly across reopen, but did find a nasty bug where a botched assertion means we failed to notice reads beyond EOF in both the xz and retry filter. Refactoring backend.c will make .finalize work easier. Eric Blake (5): xz: Avoid reading beyond EOF retry: Check size before transactions tests: Test retry when get_size values change

...\ + return (plugin).flush (handle, 0); \ + } \ + static int \ + nbdkit_trim_old (void *handle, uint32_t count, uint64_t offset) \ + { \ + return (plugin).trim (handle, count, offset, 0); \ + } \ + static int...

This adds very rough support for writing nbdkit plugins in Rust. This is not very idiomatic -- essentially we're handling the direct C calls from nbdkit in Rust. We have to use ‘unsafe’ in a few places because there's no way to tell the Rust code that nbdkit satisfies guarantees (eg. around thread safety, always returning leaked pointers back to the close function, always doing bounds

...int (*_unused1) (void *, void *, uint32_t, uint64_t); diff --git a/src/plugins.c b/src/plugins.c index d44e724..ff4facf 100644 --- a/src/plugins.c +++ b/src/plugins.c @@ -355,25 +355,24 @@ plugin_can_trim (struct backend *b, struct connection *conn) return p->plugin.trim || p->plugin._trim_old; } -/* Grab the appropriate error value. - */ -static int -get_error (struct backend_plugin *p) -{ - int ret = threadlocal_get_error (); - - if (!ret && p->plugin.errno_is_preserved) - ret = errno; - return ret ? ret : EIO; -} - static int plugin_can_zero (struct backend *b, st...

After more than a month since v2 [1], I've finally got my FUA support series polished. This is all of my outstanding patches, even though some of them were originally posted in separate threads from the original FUA post [2], [3] [1] https://www.redhat.com/archives/libguestfs/2018-January/msg00113.html [2] https://www.redhat.com/archives/libguestfs/2018-January/msg00219.html [3]