Since 0ebd24e0, cdrom doesn't have read-only on by default, which will error out when using an read only image. Fix it by setting the default value when parsing opts.
Reported-by: Edivaldo de Araujo Pereira <edivaldoapere...@yahoo.com.br> Signed-off-by: Fam Zheng <f...@redhat.com> --- v2: fix backward compatibility by force read-only with cdrom. (Kevin) Signed-off-by: Fam Zheng <f...@redhat.com> --- blockdev.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/blockdev.c b/blockdev.c index 4f76e28..b260477 100644 --- a/blockdev.c +++ b/blockdev.c @@ -625,7 +625,8 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) int cyls, heads, secs, translation; int max_devs, bus_id, unit_id, index; const char *devaddr; - bool read_only, copy_on_read; + bool read_only = false; + bool copy_on_read; Error *local_err = NULL; /* Change legacy command line options into QMP ones */ @@ -701,7 +702,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) media = MEDIA_DISK; } else if (!strcmp(value, "cdrom")) { media = MEDIA_CDROM; - qdict_put(bs_opts, "read-only", qstring_from_str("on")); + read_only = true; } else { error_report("'%s' invalid media", value); goto fail; @@ -709,7 +710,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) } /* copy-on-read is disabled with a warning for read-only devices */ - read_only = qemu_opt_get_bool(legacy_opts, "read-only", false); + read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); if (read_only && copy_on_read) { -- 1.8.3.1