diff options
| author | Hannes Reinecke <hare@suse.de> | 2017-10-02 16:26:34 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-10-17 00:57:12 -0400 |
| commit | 345e29608b4bb4b68c6c30667dda02d51484769e (patch) | |
| tree | 1681ee62b3ed8b736d27f981f318df301edcc874 /drivers/scsi/scsi_sysfs.c | |
| parent | e5203cf05282a41642edc55ac504efb8add2b17a (diff) | |
| download | linux-345e29608b4bb4b68c6c30667dda02d51484769e.tar.bz2 | |
scsi: scsi: Export blacklist flags to sysfs
Each scsi device is scanned according to the found blacklist flags, but
this information is never presented to sysfs. This makes it quite hard
to figure out if blacklisting worked as expected. With this patch we're
exporting an additional attribute 'blacklist' containing the blacklist
flags for this device.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index cfc5e316f6cb..e7714547b310 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -20,6 +20,7 @@ #include <scsi/scsi_dh.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_driver.h> +#include <scsi/scsi_devinfo.h> #include "scsi_priv.h" #include "scsi_logging.h" @@ -966,6 +967,41 @@ sdev_show_wwid(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL); +#define BLIST_FLAG_NAME(name) [ilog2(BLIST_##name)] = #name +static const char *const sdev_bflags_name[] = { +#include "scsi_devinfo_tbl.c" +}; +#undef BLIST_FLAG_NAME + +static ssize_t +sdev_show_blacklist(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + int i; + ssize_t len = 0; + + for (i = 0; i < sizeof(sdev->sdev_bflags) * BITS_PER_BYTE; i++) { + const char *name = NULL; + + if (!(sdev->sdev_bflags & BIT(i))) + continue; + if (i < ARRAY_SIZE(sdev_bflags_name) && sdev_bflags_name[i]) + name = sdev_bflags_name[i]; + + if (name) + len += snprintf(buf + len, PAGE_SIZE - len, + "%s%s", len ? " " : "", name); + else + len += snprintf(buf + len, PAGE_SIZE - len, + "%sINVALID_BIT(%d)", len ? " " : "", i); + } + if (len) + len += snprintf(buf + len, PAGE_SIZE - len, "\n"); + return len; +} +static DEVICE_ATTR(blacklist, S_IRUGO, sdev_show_blacklist, NULL); + #ifdef CONFIG_SCSI_DH static ssize_t sdev_show_dh_state(struct device *dev, struct device_attribute *attr, @@ -1151,6 +1187,7 @@ static struct attribute *scsi_sdev_attrs[] = { &dev_attr_queue_depth.attr, &dev_attr_queue_type.attr, &dev_attr_wwid.attr, + &dev_attr_blacklist.attr, #ifdef CONFIG_SCSI_DH &dev_attr_dh_state.attr, &dev_attr_access_state.attr, |