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 --- migration/qemu-file-unix.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) (limited to 'migration/qemu-file-unix.c') diff --git a/migration/qemu-file-unix.c b/migration/qemu-file-unix.c index 9682396d97..bfbc0861ab 100644 --- a/migration/qemu-file-unix.c +++ b/migration/qemu-file-unix.c @@ -26,6 +26,7 @@ #include "qemu/sockets.h" #include "block/coroutine.h" #include "migration/qemu-file.h" +#include "migration/qemu-file-internal.h" typedef struct QEMUFileSocket { int fd; @@ -84,6 +85,17 @@ static int socket_close(void *opaque) return 0; } +static int socket_shutdown(void *opaque, bool rd, bool wr) +{ + QEMUFileSocket *s = opaque; + + if (shutdown(s->fd, rd ? (wr ? SHUT_RDWR : SHUT_RD) : SHUT_WR)) { + return -errno; + } else { + return 0; + } +} + static ssize_t unix_writev_buffer(void *opaque, struct iovec *iov, int iovcnt, int64_t pos) { @@ -192,15 +204,18 @@ QEMUFile *qemu_fdopen(int fd, const char *mode) } static const QEMUFileOps socket_read_ops = { - .get_fd = socket_get_fd, + .get_fd = socket_get_fd, .get_buffer = socket_get_buffer, - .close = socket_close + .close = socket_close, + .shut_down = socket_shutdown + }; static const QEMUFileOps socket_write_ops = { - .get_fd = socket_get_fd, + .get_fd = socket_get_fd, .writev_buffer = socket_writev_buffer, - .close = socket_close + .close = socket_close, + .shut_down = socket_shutdown }; QEMUFile *qemu_fopen_socket(int fd, const char *mode) -- cgit 1.4.1