diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2022-09-29 11:30:34 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-11-06 09:48:50 +0100 |
| commit | 971974f0a9745a5163e1c825d38da03118054ae2 (patch) | |
| tree | 8bb6260fb56e2318934e21b8b23a7d69ee069a73 /block | |
| parent | c551fb0b53db5d9a1f0116e8cce12f994605c9ea (diff) | |
dmg: warn when opening dmg images containing blocks of unknown type
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220929093035.4231-5-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/dmg.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/block/dmg.c b/block/dmg.c index ba8ec344d4..675e840ca5 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -254,6 +254,25 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHeaderState *ds, for (i = s->n_chunks; i < s->n_chunks + chunk_count; i++) { s->types[i] = 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 bzip2 " + "compressed blocks will result in I/O errors"); + break; + case ULFO: + warn_report_once("dmg-lzfse module is missing, accessing lzfse " + "compressed blocks will result in I/O errors"); + 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 += 40; |