diff options
Diffstat (limited to 'qemu-nbd.c')
| -rw-r--r-- | qemu-nbd.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c index ca7109652e..2807e13239 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -43,6 +43,12 @@ #include "trace/control.h" #include "qemu-version.h" +#ifdef __linux__ +#define HAVE_NBD_DEVICE 1 +#else +#define HAVE_NBD_DEVICE 0 +#endif + #define SOCKET_PATH "/var/lock/qemu-nbd-%s" #define QEMU_NBD_OPT_CACHE 256 #define QEMU_NBD_OPT_AIO 257 @@ -98,11 +104,11 @@ static void usage(const char *name) " specify tracing options\n" " --fork fork off the server process and exit the parent\n" " once the server is running\n" -#ifdef __linux__ +#if HAVE_NBD_DEVICE +"\n" "Kernel NBD client support:\n" " -c, --connect=DEV connect FILE to the local NBD device DEV\n" " -d, --disconnect disconnect the specified device\n" -"\n" #endif "\n" "Block device options:\n" @@ -236,6 +242,7 @@ static void termsig_handler(int signum) } +#if HAVE_NBD_DEVICE static void *show_parts(void *arg) { char *device = arg; @@ -321,6 +328,7 @@ out: kill(getpid(), SIGTERM); return (void *) EXIT_FAILURE; } +#endif /* HAVE_NBD_DEVICE */ static int nbd_can_accept(void) { @@ -571,6 +579,7 @@ int main(int argc, char **argv) #endif module_call_init(MODULE_INIT_TRACE); + error_set_progname(argv[0]); qcrypto_init(&error_fatal); module_call_init(MODULE_INIT_QOM); @@ -813,6 +822,12 @@ int main(int argc, char **argv) } } +#if !HAVE_NBD_DEVICE + if (disconnect || device) { + error_report("Kernel /dev/nbdN support not available"); + exit(EXIT_FAILURE); + } +#else /* HAVE_NBD_DEVICE */ if (disconnect) { int nbdfd = open(argv[optind], O_RDWR); if (nbdfd < 0) { @@ -828,6 +843,7 @@ int main(int argc, char **argv) return 0; } +#endif if ((device && !verbose) || fork_process) { int stderr_fd[2]; @@ -1005,6 +1021,7 @@ int main(int argc, char **argv) nbd_export_set_description(exp, export_description); if (device) { +#if HAVE_NBD_DEVICE int ret; ret = pthread_create(&client_thread, NULL, nbd_client_thread, device); @@ -1012,6 +1029,7 @@ int main(int argc, char **argv) error_report("Failed to create client thread: %s", strerror(ret)); exit(EXIT_FAILURE); } +#endif } else { /* Shut up GCC warnings. */ memset(&client_thread, 0, sizeof(client_thread)); |