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Sun, 06 Nov 2022 01:53:57 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4SYvT9JmGH1mKH1nQ5dojwRTC2h1ubci6Ctz0jLSK6bflb8G0oTrjDuVi21chCWruoSyHcgw== X-Received: by 2002:a05:6000:144d:b0:236:f53e:363d with SMTP id v13-20020a056000144d00b00236f53e363dmr13472277wrx.422.1667724837657; Sun, 06 Nov 2022 01:53:57 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Kevin Wolf , Claudio Fontana , Richard Henderson Subject: [PULL 11/12] dmg: warn when opening dmg images containing blocks of unknown type Date: Sun, 6 Nov 2022 09:51:14 +0100 Message-Id: <20221106085115.257018-12-pbonzini@redhat.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221106085115.257018-1-pbonzini@redhat.com> References: <20221106085115.257018-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -37 X-Spam_score: -3.8 X-Spam_bar: --- X-Spam_report: (-3.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.045, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1667724880193100001 Content-Type: text/plain; charset="utf-8" From: Kevin Wolf Signed-off-by: Kevin Wolf Signed-off-by: Claudio Fontana Reviewed-by: Richard Henderson Message-Id: <20220929093035.4231-5-cfontana@suse.de> Signed-off-by: Paolo Bonzini --- block/dmg.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/block/dmg.c b/block/dmg.c index ba8ec344d479..675e840ca587 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -254,6 +254,25 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHea= derState *ds, for (i =3D s->n_chunks; i < s->n_chunks + chunk_count; i++) { s->types[i] =3D buff_read_uint32(buffer, offset); if (!dmg_is_known_block_type(s->types[i])) { + switch (s->types[i]) { + case UDBZ: + warn_report_once("dmg-bzip2 module is missing, accessing b= zip2 " + "compressed blocks will result in I/O err= ors"); + break; + case ULFO: + warn_report_once("dmg-lzfse module is missing, accessing l= zfse " + "compressed blocks will result in I/O err= ors"); + break; + case UDCM: + case UDLE: + /* Comments and last entry can be ignored without problems= */ + break; + default: + warn_report_once("Image contains chunks of unknown type %x= , " + "accessing them will result in I/O errors= ", + s->types[i]); + break; + } chunk_count--; i--; offset +=3D 40; --=20 2.38.1