The following changes since commit 9c125d17e9402c232c46610802e5931b3639d77b:

Merge tag 'pull-tcg-20220420' of https://gitlab.com/rth7680/qemu into staging (2022-04-20 16:43:11 -0700)

are available in the Git repository at:

https://gitlab.com/stefanha/qemu.git tags/block-pull-request

for you to fetch changes up to d45c83328feab2e4083991693160f0a417cfd9b0:

virtiofsd: Add docs/helper for killpriv_v2/no_killpriv_v2 option (2022-04-21 12:05:15 +0200)

----------------------------------------------------------------

Pull request

Small contrib/vhost-user-blk, contrib/vhost-user-scsi, and tools/virtiofsd

improvements.

Liu Yiding (1):

virtiofsd: Add docs/helper for killpriv_v2/no_killpriv_v2 option

Sakshi Kaushik (1):

Implements Backend Program conventions for vhost-user-scsi

contrib/vhost-user-blk: add missing GOptionEntry NULL terminator

docs/tools/virtiofsd.rst | 5 ++

contrib/vhost-user-blk/vhost-user-blk.c | 3 +-

contrib/vhost-user-scsi/vhost-user-scsi.c | 77 +++++++++++++++--------

tools/virtiofsd/helper.c | 3 +

4 files changed, 62 insertions(+), 26 deletions(-)

2.35.1

From: Sakshi Kaushik <sakshikaushik717@gmail.com>

Signed-off-by: Sakshi Kaushik <sakshikaushik717@gmail.com>

Message-id: 20220406162410.8536-1-sakshikaushik717@gmail.com

[Name the iSCSI URL long option --iscsi-uri instead of --iscsi_uri for

consistency, fix --fd which was rejected due to an outdated

--socket-path check, and add missing entries[] terminator.

--Stefan]

contrib/vhost-user-scsi/vhost-user-scsi.c | 77 +++++++++++++++--------

1 file changed, 52 insertions(+), 25 deletions(-)

diff --git a/contrib/vhost-user-scsi/vhost-user-scsi.c b/contrib/vhost-user-scsi/vhost-user-scsi.c

--- a/contrib/vhost-user-scsi/vhost-user-scsi.c

+++ b/contrib/vhost-user-scsi/vhost-user-scsi.c

@@ -XXX,XX +XXX,XX @@ fail:

/** vhost-user-scsi **/

+static int opt_fdnum = -1;

+static char *opt_socket_path;

+static gboolean opt_print_caps;

+static char *iscsi_uri;

+

+static GOptionEntry entries[] = {

+ { "print-capabilities", 'c', 0, G_OPTION_ARG_NONE, &opt_print_caps,

+ "Print capabilities", NULL },

+ { "fd", 'f', 0, G_OPTION_ARG_INT, &opt_fdnum,

+ "Use inherited fd socket", "FDNUM" },

+ { "iscsi-uri", 'i', 0, G_OPTION_ARG_FILENAME, &iscsi_uri,

+ "iSCSI URI to connect to", "FDNUM" },

+ { "socket-path", 's', 0, G_OPTION_ARG_FILENAME, &opt_socket_path,

+ "Use UNIX socket path", "PATH" },

+ { NULL, }

+};

+

int main(int argc, char **argv)

VusDev *vdev_scsi = NULL;

- char *unix_fn = NULL;

- char *iscsi_uri = NULL;

- int lsock = -1, csock = -1, opt, err = EXIT_SUCCESS;

+ int lsock = -1, csock = -1, err = EXIT_SUCCESS;

- while ((opt = getopt(argc, argv, "u:i:")) != -1) {

- switch (opt) {

- case 'h':

- goto help;

- case 'u':

- unix_fn = g_strdup(optarg);

- break;

- case 'i':

- iscsi_uri = g_strdup(optarg);

- break;

- default:

- goto help;

- }

+ GError *error = NULL;

+ GOptionContext *context;

+ context = g_option_context_new(NULL);

+ g_option_context_add_main_entries(context, entries, NULL);

+ if (!g_option_context_parse(context, &argc, &argv, &error)) {

+ g_printerr("Option parsing failed: %s\n", error->message);

+ exit(EXIT_FAILURE);

+

+ if (opt_print_caps) {

+ g_print("{\n");

+ g_print(" \"type\": \"scsi\"\n");

+ g_print("}\n");

+ goto out;

}

- if (!unix_fn || !iscsi_uri) {

+

+ if (!iscsi_uri) {

goto help;

}

- lsock = unix_sock_new(unix_fn);

- if (lsock < 0) {

- goto err;

+ if (opt_socket_path) {

+ lsock = unix_sock_new(opt_socket_path);

+ if (lsock < 0) {

+ exit(EXIT_FAILURE);

+ }

+ } else if (opt_fdnum < 0) {

+ g_print("%s\n", g_option_context_get_help(context, true, NULL));

+ exit(EXIT_FAILURE);

+ } else {

+ lsock = opt_fdnum;

}

csock = accept(lsock, NULL, NULL);

@@ -XXX,XX +XXX,XX @@ out:

if (vdev_scsi) {

g_main_loop_unref(vdev_scsi->loop);

g_free(vdev_scsi);

- unlink(unix_fn);

+ unlink(opt_socket_path);

}

if (csock >= 0) {

close(csock);

@@ -XXX,XX +XXX,XX @@ out:

if (lsock >= 0) {

close(lsock);

}

- g_free(unix_fn);

+ g_free(opt_socket_path);

g_free(iscsi_uri);

return err;

@@ -XXX,XX +XXX,XX @@ err:

goto out;

help:

- fprintf(stderr, "Usage: %s [ -u unix_sock_path -i iscsi_uri ] | [ -h ]\n",

+ fprintf(stderr, "Usage: %s [ -s socket-path -i iscsi-uri -f fd -p print-capabilities ] | [ -h ]\n",

argv[0]);

- fprintf(stderr, " -u path to unix socket\n");

- fprintf(stderr, " -i iscsi uri for lun 0\n");

+ fprintf(stderr, " -s, --socket-path=SOCKET_PATH path to unix socket\n");

+ fprintf(stderr, " -i, --iscsi-uri=ISCSI_URI iscsi uri for lun 0\n");

+ fprintf(stderr, " -f, --fd=FILE_DESCRIPTOR file-descriptor\n");

+ fprintf(stderr, " -p, --print-capabilities=PRINT_CAPABILITIES denotes print-capabilities\n");

fprintf(stderr, " -h print help and quit\n");

goto err;

2.35.1

The GLib documentation says "a NULL-terminated array of GOptionEntrys"

so we'd better make sure there is a terminator that lets

g_option_context_add_main_entries() know when the end of the array has

been reached.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

Message-id: 20220411150057.3009667-1-stefanha@redhat.com

contrib/vhost-user-blk/vhost-user-blk.c | 3 ++-

1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contrib/vhost-user-blk/vhost-user-blk.c b/contrib/vhost-user-blk/vhost-user-blk.c

--- a/contrib/vhost-user-blk/vhost-user-blk.c

+++ b/contrib/vhost-user-blk/vhost-user-blk.c

@@ -XXX,XX +XXX,XX @@ static GOptionEntry entries[] = {

{"blk-file", 'b', 0, G_OPTION_ARG_FILENAME, &opt_blk_file,

"block device or file path", "PATH"},

{ "read-only", 'r', 0, G_OPTION_ARG_NONE, &opt_read_only,

- "Enable read-only", NULL }

+ "Enable read-only", NULL },

+ { NULL, },

};

int main(int argc, char **argv)

2.35.1

From: Liu Yiding <liuyd.fnst@fujitsu.com>

virtiofsd has introduced killpriv_v2/no_killpriv_v2 for a while. Add

description of it to docs/helper.

Signed-off-by: Liu Yiding <liuyd.fnst@fujitsu.com>

Message-Id: <20220421095151.2231099-1-liuyd.fnst@fujitsu.com>

[Small documentation fixes: s/as client supports/as the client supports/

and s/. /. /.

--Stefan]

docs/tools/virtiofsd.rst | 5 +++++

tools/virtiofsd/helper.c | 3 +++

2 files changed, 8 insertions(+)

diff --git a/docs/tools/virtiofsd.rst b/docs/tools/virtiofsd.rst

--- a/docs/tools/virtiofsd.rst

+++ b/docs/tools/virtiofsd.rst

@@ -XXX,XX +XXX,XX @@ Options

label. Server will try to set that label on newly created file

atomically wherever possible.

+ * killpriv_v2|no_killpriv_v2 -

+ Enable/disable ``FUSE_HANDLE_KILLPRIV_V2`` support. KILLPRIV_V2 is enabled

+ by default as long as the client supports it. Enabling this option helps

+ with performance in write path.

+

.. option:: --socket-path=PATH

Listen on vhost-user UNIX domain socket at PATH.

diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c

index XXXXXXX..XXXXXXX 100644

--- a/tools/virtiofsd/helper.c

+++ b/tools/virtiofsd/helper.c

@@ -XXX,XX +XXX,XX @@ void fuse_cmdline_help(void)

" -o announce_submounts Announce sub-mount points to the guest\n"

" -o posix_acl/no_posix_acl Enable/Disable posix_acl. (default: disabled)\n"

" -o security_label/no_security_label Enable/Disable security label. (default: disabled)\n"

+ " -o killpriv_v2/no_killpriv_v2\n"

+ " Enable/Disable FUSE_HANDLE_KILLPRIV_V2.\n"

+ " (default: enabled as long as client supports it)\n"

);

}

2.35.1