diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/kernel/vfs/root.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/src/kernel/vfs/root.c b/src/kernel/vfs/root.c index 4a1148e..904f996 100644 --- a/src/kernel/vfs/root.c +++ b/src/kernel/vfs/root.c @@ -66,6 +66,7 @@ static bool wait_setup(struct vfs_request *req, bool *ready, bool (*ready_fn)()) } static int handle(struct vfs_request *req, bool *ready) { + assert(req->caller); switch (req->type) { case VFSOP_OPEN: if (exacteq(req, "/")) return HANDLE_ROOT; @@ -174,10 +175,25 @@ static int handle(struct vfs_request *req, bool *ready) { } int vfs_root_handler(struct vfs_request *req) { - bool ready = true; - int ret = handle(req, &ready); - if (ready) - return vfs_request_finish(req, ret); - else - return -1; + if (req->caller) { + /* this introduces a difference between the root vfs and emulated ones: + * + * the root vfs has to immediately discard requests from dead processes. + * so, if 16 processes queue up for an IRQ, and the middle 14 quit, only + * 2 IRQs will be processed + * + * but if they do that in an emulated root vfs, all 16 IRQs will be processed + * + * to fix this, i need to make it so callerless requests can also wait + * for IRQs. + */ + bool ready = true; + int ret = handle(req, &ready); + if (ready) + return vfs_request_finish(req, ret); + else + return -1; + } else { + return vfs_request_finish(req, -1); + } } |