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Fixed crash on read-only attributes after manual chmod on them. Reported by Mehmet Ali Cer <mehmet.ali.cer@gmail.com>

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1616 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2010-04-14 19:08:40 +00:00
parent 3a7fae9677
commit 31da70434d
1 changed files with 16 additions and 4 deletions
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20
scst/src/scst_sysfs.c
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@@ -485,7 +485,10 @@ static ssize_t scst_tgt_attr_store(struct kobject *kobj,
kobj_attr = container_of(attr, struct kobj_attribute, attr);
res = kobj_attr->store(kobj, kobj_attr, buf, count);
if (kobj_attr->store)
res = kobj_attr->store(kobj, kobj_attr, buf, count);
else
res = -EIO;
up_read(&tgt->tgt_attr_rwsem);
@@ -1146,7 +1149,10 @@ static ssize_t scst_dev_attr_store(struct kobject *kobj, struct attribute *attr,
kobj_attr = container_of(attr, struct kobj_attribute, attr);
res = kobj_attr->store(kobj, kobj_attr, buf, count);
if (kobj_attr->store)
res = kobj_attr->store(kobj, kobj_attr, buf, count);
else
res = -EIO;
up_read(&dev->dev_attr_rwsem);
@@ -1365,7 +1371,10 @@ static ssize_t scst_sess_attr_store(struct kobject *kobj, struct attribute *attr
kobj_attr = container_of(attr, struct kobj_attribute, attr);
res = kobj_attr->store(kobj, kobj_attr, buf, count);
if (kobj_attr->store)
res = kobj_attr->store(kobj, kobj_attr, buf, count);
else
res = -EIO;
up_read(&sess->sess_attr_rwsem);
@@ -3314,7 +3323,10 @@ static ssize_t scst_store(struct kobject *kobj, struct attribute *attr,
struct kobj_attribute *kobj_attr;
kobj_attr = container_of(attr, struct kobj_attribute, attr);
return kobj_attr->store(kobj, kobj_attr, buf, count);
if (kobj_attr->store)
return kobj_attr->store(kobj, kobj_attr, buf, count);
else
return -EIO;
}
struct sysfs_ops scst_sysfs_ops = {