From e1a8c9b67fc97d293211773edcae9e8e2f3367ab Mon Sep 17 00:00:00 2001 From: Dr. David Alan Gilbert Date: Thu, 8 Jan 2015 11:11:30 +0000 Subject: socket shutdown Add QEMUFile interface to allow a socket to be 'shut down' - i.e. any reads/writes will fail (and any blocking read/write will be woken). Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Paolo Bonzini Reviewed-by: Amit Shah Signed-off-by: Amit Shah --- include/migration/qemu-file.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/migration/qemu-file.h') diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h index 401676bf4d..d843c0010c 100644 --- a/include/migration/qemu-file.h +++ b/include/migration/qemu-file.h @@ -84,6 +84,14 @@ typedef size_t (QEMURamSaveFunc)(QEMUFile *f, void *opaque, size_t size, int *bytes_sent); +/* + * Stop any read or write (depending on flags) on the underlying + * transport on the QEMUFile. + * Existing blocking reads/writes must be woken + * Returns 0 on success, -err on error + */ +typedef int (QEMUFileShutdownFunc)(void *opaque, bool rd, bool wr); + typedef struct QEMUFileOps { QEMUFilePutBufferFunc *put_buffer; QEMUFileGetBufferFunc *get_buffer; @@ -94,6 +102,7 @@ typedef struct QEMUFileOps { QEMURamHookFunc *after_ram_iterate; QEMURamHookFunc *hook_ram_load; QEMURamSaveFunc *save_page; + QEMUFileShutdownFunc *shut_down; } QEMUFileOps; struct QEMUSizedBuffer { @@ -177,6 +186,7 @@ void qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate); int64_t qemu_file_get_rate_limit(QEMUFile *f); int qemu_file_get_error(QEMUFile *f); void qemu_file_set_error(QEMUFile *f, int ret); +int qemu_file_shutdown(QEMUFile *f); void qemu_fflush(QEMUFile *f); static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv) -- cgit v1.2.3-55-g7522