| Message ID | 1496152683-102751-11-git-send-email-anton.nefedov@virtuozzo.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi On Tue, May 30, 2017 at 6:08 PM Anton Nefedov <anton.nefedov@virtuozzo.com> wrote: > Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com> > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > CC: Dr. David Alan Gilbert <dgilbert@redhat.com> > --- > chardev/char.c | 2 +- > hmp-commands.hx | 16 ++++++++++++++++ > hmp.c | 34 ++++++++++++++++++++++++++++++++++ > hmp.h | 1 + > include/sysemu/char.h | 12 ++++++++++++ > 5 files changed, 64 insertions(+), 1 deletion(-) > > diff --git a/chardev/char.c b/chardev/char.c > index 2d6e204..1e2a2dd 100644 > --- a/chardev/char.c > +++ b/chardev/char.c > @@ -888,7 +888,7 @@ help_string_append(const char *name, void *opaque) > g_string_append_printf(str, "\n%s", name); > } > > -static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) > { > Error *local_err = NULL; > const ChardevClass *cc; > diff --git a/hmp-commands.hx b/hmp-commands.hx > index baeac47..19bfddd 100644 > --- a/hmp-commands.hx > +++ b/hmp-commands.hx > @@ -1727,6 +1727,22 @@ chardev_add accepts the same parameters as the > -chardev command line switch. > ETEXI > > { > + .name = "chardev-change", > + .args_type = "id:s,args:s", > + .params = "id args", > + .help = "change chardev", > + .cmd = hmp_chardev_change, > + }, > + > +STEXI > +@item chardev-change args > +@findex chardev-change > +chardev_change accepts existing chardev @var{id} and then the same > arguments > chardev_change vs chardev-change. Apparently, there is this difference for chardev-add too > +as the -chardev command line switch (except for "id"). > + > +ETEXI > + > + { > .name = "chardev-remove", > .args_type = "id:s", > .params = "id", > diff --git a/hmp.c b/hmp.c > index 20f5dab..7660495 100644 > --- a/hmp.c > +++ b/hmp.c > @@ -2224,6 +2224,40 @@ void hmp_chardev_add(Monitor *mon, const QDict > *qdict) > hmp_handle_error(mon, &err); > } > > +void hmp_chardev_change(Monitor *mon, const QDict *qdict) > +{ > + const char *args = qdict_get_str(qdict, "args"); > + const char *id; > + Error *err = NULL; > + ChardevBackend *backend = NULL; > + ChardevReturn *ret = NULL; > + QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), > args, > + true); > + if (!opts) { > + error_setg(&err, "Parsing chardev args failed"); > + goto end; > + } > + > + id = qdict_get_str(qdict, "id"); > + if (qemu_opts_id(opts)) { > + error_setg(&err, "Unexpected 'id' parameter"); > enlighten me, how is this triggered? > + goto end; > + } > + > + backend = qemu_chr_parse_opts(opts, &err); > + if (!backend) { > + goto end; > + } > + > + ret = qmp_chardev_change(id, backend, &err); > + > +end: > + qapi_free_ChardevReturn(ret); > + qapi_free_ChardevBackend(backend); > + qemu_opts_del(opts); > + hmp_handle_error(mon, &err); > +} > + > void hmp_chardev_remove(Monitor *mon, const QDict *qdict) > { > Error *local_err = NULL; > diff --git a/hmp.h b/hmp.h > index d8b94ce..23e035c 100644 > --- a/hmp.h > +++ b/hmp.h > @@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict > *qdict); > void hmp_nbd_server_add(Monitor *mon, const QDict *qdict); > void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict); > void hmp_chardev_add(Monitor *mon, const QDict *qdict); > +void hmp_chardev_change(Monitor *mon, const QDict *qdict); > void hmp_chardev_remove(Monitor *mon, const QDict *qdict); > void hmp_qemu_io(Monitor *mon, const QDict *qdict); > void hmp_cpu_add(Monitor *mon, const QDict *qdict); > diff --git a/include/sysemu/char.h b/include/sysemu/char.h > index 342f531..18fcd26 100644 > --- a/include/sysemu/char.h > +++ b/include/sysemu/char.h > @@ -131,6 +131,18 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, > void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend); > > /** > + * @qemu_chr_parse_opts: > + * > + * Parse the options to the ChardevBackend struct. > + * > + * @opts > + * > You may remove that line > + * Returns: a new backend > or NULL on error > + */ > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, > + Error **errp); > + > +/** > * @qemu_chr_new: > * > * Create a new character backend from a URI. > -- > 2.7.4 > > > -- Marc-André Lureau
On 06/01/2017 10:12 AM, Marc-André Lureau wrote: > Hi > > On Tue, May 30, 2017 at 6:08 PM Anton Nefedov > <anton.nefedov@virtuozzo.com <mailto:anton.nefedov@virtuozzo.com>> wrote: > > Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com > <mailto:anton.nefedov@virtuozzo.com>> > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com > <mailto:vsementsov@virtuozzo.com>> > CC: Dr. David Alan Gilbert <dgilbert@redhat.com > <mailto:dgilbert@redhat.com>> > --- > chardev/char.c | 2 +- > hmp-commands.hx | 16 ++++++++++++++++ > hmp.c | 34 ++++++++++++++++++++++++++++++++++ > hmp.h | 1 + > include/sysemu/char.h | 12 ++++++++++++ > 5 files changed, 64 insertions(+), 1 deletion(-) > > diff --git a/chardev/char.c b/chardev/char.c > index 2d6e204..1e2a2dd 100644 > --- a/chardev/char.c > +++ b/chardev/char.c > @@ -888,7 +888,7 @@ help_string_append(const char *name, void *opaque) > g_string_append_printf(str, "\n%s", name); > } > > -static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error > **errp) > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) > { > Error *local_err = NULL; > const ChardevClass *cc; > diff --git a/hmp-commands.hx b/hmp-commands.hx > index baeac47..19bfddd 100644 > --- a/hmp-commands.hx > +++ b/hmp-commands.hx > @@ -1727,6 +1727,22 @@ chardev_add accepts the same parameters as > the -chardev command line switch. > ETEXI > > { > + .name = "chardev-change", > + .args_type = "id:s,args:s", > + .params = "id args", > + .help = "change chardev", > + .cmd = hmp_chardev_change, > + }, > + > +STEXI > +@item chardev-change args > +@findex chardev-change > +chardev_change accepts existing chardev @var{id} and then the same > arguments > > > chardev_change vs chardev-change. Apparently, there is this difference > for chardev-add too > Done. > +as the -chardev command line switch (except for "id"). > + > +ETEXI > + > + { > .name = "chardev-remove", > .args_type = "id:s", > .params = "id", > diff --git a/hmp.c b/hmp.c > index 20f5dab..7660495 100644 > --- a/hmp.c > +++ b/hmp.c > @@ -2224,6 +2224,40 @@ void hmp_chardev_add(Monitor *mon, const > QDict *qdict) > hmp_handle_error(mon, &err); > } > > +void hmp_chardev_change(Monitor *mon, const QDict *qdict) > +{ > + const char *args = qdict_get_str(qdict, "args"); > + const char *id; > + Error *err = NULL; > + ChardevBackend *backend = NULL; > + ChardevReturn *ret = NULL; > + QemuOpts *opts = > qemu_opts_parse_noisily(qemu_find_opts("chardev"), args, > + true); > + if (!opts) { > + error_setg(&err, "Parsing chardev args failed"); > + goto end; > + } > + > + id = qdict_get_str(qdict, "id"); > + if (qemu_opts_id(opts)) { > + error_setg(&err, "Unexpected 'id' parameter"); > > > enlighten me, how is this triggered? > correct variant: chardev-change char2 pipe,path=/tmp/cent.fifo vs. (without this check) (qemu) chardev-change char2 pipe,id=char2,path=/tmp/cent.fifo chardev-change char2 pipe,id=char2,path=/tmp/cent.fifo Duplicate ID 'char2' for chardev Parsing chardev args failed or (qemu) chardev-change char2 pipe,id=newchar3,path=/tmp/cent.fifo the command would succeed but the user might expect the id to change, but it wouldn't > + goto end; > + } > + > + backend = qemu_chr_parse_opts(opts, &err); > + if (!backend) { > + goto end; > + } > + > + ret = qmp_chardev_change(id, backend, &err); > + > +end: > + qapi_free_ChardevReturn(ret); > + qapi_free_ChardevBackend(backend); > + qemu_opts_del(opts); > + hmp_handle_error(mon, &err); > +} > + > void hmp_chardev_remove(Monitor *mon, const QDict *qdict) > { > Error *local_err = NULL; > diff --git a/hmp.h b/hmp.h > index d8b94ce..23e035c 100644 > --- a/hmp.h > +++ b/hmp.h > @@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const > QDict *qdict); > void hmp_nbd_server_add(Monitor *mon, const QDict *qdict); > void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict); > void hmp_chardev_add(Monitor *mon, const QDict *qdict); > +void hmp_chardev_change(Monitor *mon, const QDict *qdict); > void hmp_chardev_remove(Monitor *mon, const QDict *qdict); > void hmp_qemu_io(Monitor *mon, const QDict *qdict); > void hmp_cpu_add(Monitor *mon, const QDict *qdict); > diff --git a/include/sysemu/char.h b/include/sysemu/char.h > index 342f531..18fcd26 100644 > --- a/include/sysemu/char.h > +++ b/include/sysemu/char.h > @@ -131,6 +131,18 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, > void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend); > > /** > + * @qemu_chr_parse_opts: > + * > + * Parse the options to the ChardevBackend struct. > + * > + * @opts > + * > > > You may remove that line > > + * Returns: a new backend > > > or NULL on error > Done. > + */ > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, > + Error **errp); > + > +/** > * @qemu_chr_new: > * > * Create a new character backend from a URI. > -- > 2.7.4 > > > -- > Marc-André Lureau /Anton
* Anton Nefedov (anton.nefedov@virtuozzo.com) wrote: > Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com> > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > CC: Dr. David Alan Gilbert <dgilbert@redhat.com> Thanks, with Marc-Andre's comments, this looks fine from the HMP point. If you can find a way to add a test to tests/test-hmp.c it would be great. Dave > --- > chardev/char.c | 2 +- > hmp-commands.hx | 16 ++++++++++++++++ > hmp.c | 34 ++++++++++++++++++++++++++++++++++ > hmp.h | 1 + > include/sysemu/char.h | 12 ++++++++++++ > 5 files changed, 64 insertions(+), 1 deletion(-) > > diff --git a/chardev/char.c b/chardev/char.c > index 2d6e204..1e2a2dd 100644 > --- a/chardev/char.c > +++ b/chardev/char.c > @@ -888,7 +888,7 @@ help_string_append(const char *name, void *opaque) > g_string_append_printf(str, "\n%s", name); > } > > -static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) > { > Error *local_err = NULL; > const ChardevClass *cc; > diff --git a/hmp-commands.hx b/hmp-commands.hx > index baeac47..19bfddd 100644 > --- a/hmp-commands.hx > +++ b/hmp-commands.hx > @@ -1727,6 +1727,22 @@ chardev_add accepts the same parameters as the -chardev command line switch. > ETEXI > > { > + .name = "chardev-change", > + .args_type = "id:s,args:s", > + .params = "id args", > + .help = "change chardev", > + .cmd = hmp_chardev_change, > + }, > + > +STEXI > +@item chardev-change args > +@findex chardev-change > +chardev_change accepts existing chardev @var{id} and then the same arguments > +as the -chardev command line switch (except for "id"). > + > +ETEXI > + > + { > .name = "chardev-remove", > .args_type = "id:s", > .params = "id", > diff --git a/hmp.c b/hmp.c > index 20f5dab..7660495 100644 > --- a/hmp.c > +++ b/hmp.c > @@ -2224,6 +2224,40 @@ void hmp_chardev_add(Monitor *mon, const QDict *qdict) > hmp_handle_error(mon, &err); > } > > +void hmp_chardev_change(Monitor *mon, const QDict *qdict) > +{ > + const char *args = qdict_get_str(qdict, "args"); > + const char *id; > + Error *err = NULL; > + ChardevBackend *backend = NULL; > + ChardevReturn *ret = NULL; > + QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), args, > + true); > + if (!opts) { > + error_setg(&err, "Parsing chardev args failed"); > + goto end; > + } > + > + id = qdict_get_str(qdict, "id"); > + if (qemu_opts_id(opts)) { > + error_setg(&err, "Unexpected 'id' parameter"); > + goto end; > + } > + > + backend = qemu_chr_parse_opts(opts, &err); > + if (!backend) { > + goto end; > + } > + > + ret = qmp_chardev_change(id, backend, &err); > + > +end: > + qapi_free_ChardevReturn(ret); > + qapi_free_ChardevBackend(backend); > + qemu_opts_del(opts); > + hmp_handle_error(mon, &err); > +} > + > void hmp_chardev_remove(Monitor *mon, const QDict *qdict) > { > Error *local_err = NULL; > diff --git a/hmp.h b/hmp.h > index d8b94ce..23e035c 100644 > --- a/hmp.h > +++ b/hmp.h > @@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict); > void hmp_nbd_server_add(Monitor *mon, const QDict *qdict); > void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict); > void hmp_chardev_add(Monitor *mon, const QDict *qdict); > +void hmp_chardev_change(Monitor *mon, const QDict *qdict); > void hmp_chardev_remove(Monitor *mon, const QDict *qdict); > void hmp_qemu_io(Monitor *mon, const QDict *qdict); > void hmp_cpu_add(Monitor *mon, const QDict *qdict); > diff --git a/include/sysemu/char.h b/include/sysemu/char.h > index 342f531..18fcd26 100644 > --- a/include/sysemu/char.h > +++ b/include/sysemu/char.h > @@ -131,6 +131,18 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, > void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend); > > /** > + * @qemu_chr_parse_opts: > + * > + * Parse the options to the ChardevBackend struct. > + * > + * @opts > + * > + * Returns: a new backend > + */ > +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, > + Error **errp); > + > +/** > * @qemu_chr_new: > * > * Create a new character backend from a URI. > -- > 2.7.4 > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
diff --git a/chardev/char.c b/chardev/char.c index 2d6e204..1e2a2dd 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -888,7 +888,7 @@ help_string_append(const char *name, void *opaque) g_string_append_printf(str, "\n%s", name); } -static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) { Error *local_err = NULL; const ChardevClass *cc; diff --git a/hmp-commands.hx b/hmp-commands.hx index baeac47..19bfddd 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1727,6 +1727,22 @@ chardev_add accepts the same parameters as the -chardev command line switch. ETEXI { + .name = "chardev-change", + .args_type = "id:s,args:s", + .params = "id args", + .help = "change chardev", + .cmd = hmp_chardev_change, + }, + +STEXI +@item chardev-change args +@findex chardev-change +chardev_change accepts existing chardev @var{id} and then the same arguments +as the -chardev command line switch (except for "id"). + +ETEXI + + { .name = "chardev-remove", .args_type = "id:s", .params = "id", diff --git a/hmp.c b/hmp.c index 20f5dab..7660495 100644 --- a/hmp.c +++ b/hmp.c @@ -2224,6 +2224,40 @@ void hmp_chardev_add(Monitor *mon, const QDict *qdict) hmp_handle_error(mon, &err); } +void hmp_chardev_change(Monitor *mon, const QDict *qdict) +{ + const char *args = qdict_get_str(qdict, "args"); + const char *id; + Error *err = NULL; + ChardevBackend *backend = NULL; + ChardevReturn *ret = NULL; + QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), args, + true); + if (!opts) { + error_setg(&err, "Parsing chardev args failed"); + goto end; + } + + id = qdict_get_str(qdict, "id"); + if (qemu_opts_id(opts)) { + error_setg(&err, "Unexpected 'id' parameter"); + goto end; + } + + backend = qemu_chr_parse_opts(opts, &err); + if (!backend) { + goto end; + } + + ret = qmp_chardev_change(id, backend, &err); + +end: + qapi_free_ChardevReturn(ret); + qapi_free_ChardevBackend(backend); + qemu_opts_del(opts); + hmp_handle_error(mon, &err); +} + void hmp_chardev_remove(Monitor *mon, const QDict *qdict) { Error *local_err = NULL; diff --git a/hmp.h b/hmp.h index d8b94ce..23e035c 100644 --- a/hmp.h +++ b/hmp.h @@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict); void hmp_nbd_server_add(Monitor *mon, const QDict *qdict); void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict); void hmp_chardev_add(Monitor *mon, const QDict *qdict); +void hmp_chardev_change(Monitor *mon, const QDict *qdict); void hmp_chardev_remove(Monitor *mon, const QDict *qdict); void hmp_qemu_io(Monitor *mon, const QDict *qdict); void hmp_cpu_add(Monitor *mon, const QDict *qdict); diff --git a/include/sysemu/char.h b/include/sysemu/char.h index 342f531..18fcd26 100644 --- a/include/sysemu/char.h +++ b/include/sysemu/char.h @@ -131,6 +131,18 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend); /** + * @qemu_chr_parse_opts: + * + * Parse the options to the ChardevBackend struct. + * + * @opts + * + * Returns: a new backend + */ +ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, + Error **errp); + +/** * @qemu_chr_new: * * Create a new character backend from a URI.