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"Commands" attribute added for scst_user

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1231 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2009-10-21 17:14:27 +00:00
parent a09681b1fb
commit ef50e616e0
1 changed files with 53 additions and 0 deletions
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53
scst/src/dev_handlers/scst_user.c
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@@ -188,6 +188,17 @@ static int dev_user_read_proc(struct seq_file *seq,
static int dev_usr_parse(struct scst_cmd *cmd);
static ssize_t dev_user_sysfs_commands_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf);
static struct kobj_attribute dev_user_commands_attr =
__ATTR(commands, S_IRUGO, dev_user_sysfs_commands_show, NULL);
static const struct attribute *dev_user_dev_attrs[] = {
&dev_user_commands_attr.attr,
NULL,
};
/** Data **/
static struct kmem_cache *user_cmd_cachep;
@@ -2777,6 +2788,7 @@ static int dev_user_register_dev(struct file *file,
#ifdef CONFIG_SCST_PROC
dev->devtype.no_proc = 1;
#endif
dev->devtype.dev_attrs = dev_user_dev_attrs;
dev->devtype.attach = dev_user_attach;
dev->devtype.detach = dev_user_detach;
dev->devtype.attach_tgt = dev_user_attach_tgt;
@@ -3361,6 +3373,47 @@ out:
return res;
}
static ssize_t dev_user_sysfs_commands_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
int pos = 0, ppos, i;
struct scst_device *dev;
struct scst_user_dev *udev;
unsigned long flags;
TRACE_ENTRY();
dev = container_of(kobj, struct scst_device, dev_kobj);
udev = (struct scst_user_dev *)dev->dh_priv;
spin_lock_irqsave(&udev->cmd_lists.cmd_list_lock, flags);
for (i = 0; i < (int)ARRAY_SIZE(udev->ucmd_hash); i++) {
struct list_head *head = &udev->ucmd_hash[i];
struct scst_user_cmd *ucmd;
list_for_each_entry(ucmd, head, hash_list_entry) {
ppos = pos;
pos += scnprintf(&buf[pos],
SCST_SYSFS_BLOCK_SIZE - pos,
"ucmd %p (state %x, ref %d), "
"sent_to_user %d, seen_by_user %d, "
"aborted %d, jammed %d, scst_cmd %p\n",
ucmd, ucmd->state,
atomic_read(&ucmd->ucmd_ref),
ucmd->sent_to_user, ucmd->seen_by_user,
ucmd->aborted, ucmd->jammed, ucmd->cmd);
if (pos >= SCST_SYSFS_BLOCK_SIZE) {
scnprintf(&buf[ppos],
SCST_SYSFS_BLOCK_SIZE - ppos, "...\n");
break;
}
}
}
spin_unlock_irqrestore(&udev->cmd_lists.cmd_list_lock, flags);
TRACE_EXIT_RES(pos);
return pos;
}
#ifdef CONFIG_SCST_PROC
/*
* Called when a file in the /proc/scsi_tgt/scst_user is read