diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2020-05-19 19:20:43 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@redhat.com> | 2020-07-03 18:16:01 +0200 |
| commit | 6552d87c48679e1ece2da3ddc0947d2146de53ee (patch) | |
| tree | 4d0157e359307c07648b638f28d9fc7db1d37022 | |
| parent | 3203148917d035b09f71986ac2eaa19a352d6d9d (diff) | |
softmmu/vl: Let -fw_cfg option take a 'gen_id' argument
The 'gen_id' argument refers to a QOM object able to produce
data consumable by the fw_cfg device. The producer object must
implement the FW_CFG_DATA_GENERATOR interface.
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200623172726.21040-4-philmd@redhat.com>
| -rw-r--r-- | softmmu/vl.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/softmmu/vl.c b/softmmu/vl.c index 3e15ee2435..13cada39d6 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -489,6 +489,11 @@ static QemuOptsList qemu_fw_cfg_opts = { .name = "string", .type = QEMU_OPT_STRING, .help = "Sets content of the blob to be inserted from a string", + }, { + .name = "gen_id", + .type = QEMU_OPT_STRING, + .help = "Sets id of the object generating the fw_cfg blob " + "to be inserted", }, { /* end of list */ } }, @@ -2020,7 +2025,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp) { gchar *buf; size_t size; - const char *name, *file, *str; + const char *name, *file, *str, *gen_id; FWCfgState *fw_cfg = (FWCfgState *) opaque; if (fw_cfg == NULL) { @@ -2030,14 +2035,13 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp) name = qemu_opt_get(opts, "name"); file = qemu_opt_get(opts, "file"); str = qemu_opt_get(opts, "string"); + gen_id = qemu_opt_get(opts, "gen_id"); - /* we need name and either a file or the content string */ - if (!(nonempty_str(name) && (nonempty_str(file) || nonempty_str(str)))) { - error_setg(errp, "invalid argument(s)"); - return -1; - } - if (nonempty_str(file) && nonempty_str(str)) { - error_setg(errp, "file and string are mutually exclusive"); + /* we need the name, and exactly one of: file, content string, gen_id */ + if (!nonempty_str(name) || + nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) { + error_setg(errp, "name, plus exactly one of file," + " string and gen_id, are needed"); return -1; } if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) { @@ -2052,6 +2056,15 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp) if (nonempty_str(str)) { size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */ buf = g_memdup(str, size); + } else if (nonempty_str(gen_id)) { + Error *local_err = NULL; + + fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp); + if (local_err) { + error_propagate(errp, local_err); + return -1; + } + return 0; } else { GError *err = NULL; if (!g_file_get_contents(file, &buf, &size, &err)) { |