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author | Fam Zheng <famz@redhat.com> | 2017-08-21 22:10:07 +0800 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-09-19 14:09:11 +0200 |
commit | a485b23425c755867d6caa6ab590be4e0473e35a (patch) | |
tree | f22197ab32440478a02c7444ec7154cb75e63cf1 /util | |
parent | 5efa3c04483d408a03ff5f018842501a2048a51b (diff) | |
download | qemu-a485b23425c755867d6caa6ab590be4e0473e35a.zip qemu-a485b23425c755867d6caa6ab590be4e0473e35a.tar.gz qemu-a485b23425c755867d6caa6ab590be4e0473e35a.tar.bz2 |
scsi: Introduce scsi_sense_buf_to_errno
This recognizes the "fixed" and "descriptor" format sense data, extracts
the sense key/asc/ascq fields then converts them to an errno.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170821141008.19383-4-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'util')
-rw-r--r-- | util/scsi.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/util/scsi.c b/util/scsi.c index 472eb5b..472293d 100644 --- a/util/scsi.c +++ b/util/scsi.c @@ -58,3 +58,33 @@ int scsi_sense_to_errno(int key, int asc, int ascq) return EIO; } } + +int scsi_sense_buf_to_errno(const uint8_t *sense, size_t sense_size) +{ + int key, asc, ascq; + if (sense_size < 1) { + return EIO; + } + switch (sense[0]) { + case 0x70: /* Fixed format sense data. */ + if (sense_size < 14) { + return EIO; + } + key = sense[2] & 0xF; + asc = sense[12]; + ascq = sense[13]; + break; + case 0x72: /* Descriptor format sense data. */ + if (sense_size < 4) { + return EIO; + } + key = sense[1] & 0xF; + asc = sense[2]; + ascq = sense[3]; + break; + default: + return EIO; + break; + } + return scsi_sense_to_errno(key, asc, ascq); +} |