diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/virtiofsd/fuse_lowlevel.h | 1 | ||||
| -rw-r--r-- | tools/virtiofsd/helper.c | 2 | ||||
| -rw-r--r-- | tools/virtiofsd/passthrough_ll.c | 12 |
3 files changed, 15 insertions, 0 deletions
diff --git a/tools/virtiofsd/fuse_lowlevel.h b/tools/virtiofsd/fuse_lowlevel.h index f6b3470..0d61df8 100644 --- a/tools/virtiofsd/fuse_lowlevel.h +++ b/tools/virtiofsd/fuse_lowlevel.h @@ -1794,6 +1794,7 @@ struct fuse_cmdline_opts { int nodefault_subtype; int show_version; int show_help; + int print_capabilities; unsigned int max_idle_threads; }; diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c index a3645fc..b8ec5ac 100644 --- a/tools/virtiofsd/helper.c +++ b/tools/virtiofsd/helper.c @@ -40,6 +40,7 @@ static const struct fuse_opt fuse_helper_opts[] = { FUSE_HELPER_OPT("--help", show_help), FUSE_HELPER_OPT("-V", show_version), FUSE_HELPER_OPT("--version", show_version), + FUSE_HELPER_OPT("--print-capabilities", print_capabilities), FUSE_HELPER_OPT("-d", debug), FUSE_HELPER_OPT("debug", debug), FUSE_HELPER_OPT("-d", foreground), @@ -135,6 +136,7 @@ void fuse_cmdline_help(void) { printf(" -h --help print help\n" " -V --version print version\n" + " --print-capabilities print vhost-user.json\n" " -d -o debug enable debug output (implies -f)\n" " -f foreground operation\n" " --daemonize run in background\n" diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index 037c5d7..cd27c09 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -1298,6 +1298,14 @@ static struct fuse_lowlevel_ops lo_oper = { .lseek = lo_lseek, }; +/* Print vhost-user.json backend program capabilities */ +static void print_capabilities(void) +{ + printf("{\n"); + printf(" \"type\": \"fs\"\n"); + printf("}\n"); +} + int main(int argc, char *argv[]) { struct fuse_args args = FUSE_ARGS_INIT(argc, argv); @@ -1328,6 +1336,10 @@ int main(int argc, char *argv[]) fuse_lowlevel_version(); ret = 0; goto err_out1; + } else if (opts.print_capabilities) { + print_capabilities(); + ret = 0; + goto err_out1; } if (fuse_opt_parse(&args, &lo, lo_opts, NULL) == -1) { |