From fd752801ae1cc729359a37f29e32265de6948d37 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Tue, 2 Dec 2014 18:32:44 +0100 Subject: [PATCH] block/nfs: Add create_opts The nfs protocol driver is capable of creating images, but did not specify any creation options. Fix it. A way to test this issue is the following: $ qemu-img create -f nfs nfs://127.0.0.1/foo.qcow2 64M Without this patch, it segfaults. With this patch, it does not. However, this is not something that should really work; qemu-img should check whether the parameter for the -f option (and -O for convert) is indeed a format, and error out if it is not. Therefore, I am not making it an iotest. Cc: qemu-stable@nongnu.org Signed-off-by: Max Reitz Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- block/nfs.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/block/nfs.c b/block/nfs.c index c76e368..ca9e24e 100644 --- a/block/nfs.c +++ b/block/nfs.c @@ -409,6 +409,19 @@ out: return ret; } +static QemuOptsList nfs_create_opts = { + .name = "nfs-create-opts", + .head = QTAILQ_HEAD_INITIALIZER(nfs_create_opts.head), + .desc = { + { + .name = BLOCK_OPT_SIZE, + .type = QEMU_OPT_SIZE, + .help = "Virtual disk size" + }, + { /* end of list */ } + } +}; + static int nfs_file_create(const char *url, QemuOpts *opts, Error **errp) { int ret = 0; @@ -470,6 +483,8 @@ static BlockDriver bdrv_nfs = { .instance_size = sizeof(NFSClient), .bdrv_needs_filename = true, + .create_opts = &nfs_create_opts, + .bdrv_has_zero_init = nfs_has_zero_init, .bdrv_get_allocated_file_size = nfs_get_allocated_file_size, .bdrv_truncate = nfs_file_truncate, -- 2.7.4