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s390/hypfs: add interface for diagnose 0x304

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To provide access to the set-partition-resource-parameter interface
to user space add a new attribute to hypfs/debugfs:
 * s390_hypsfs/diag_304
The data for the query-partition-resource-parameters command can
be access by a read on the attribute. All other diagnose 0x304
requests need to be submitted via ioctl with CAP_SYS_ADMIN rights.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2014-01-24 09:18:52 +01:00
parent fded4329da
commit 07be038209
9 changed files with 208 additions and 5 deletions
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15
arch/s390/hypfs/inode.c
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@@ -478,10 +478,14 @@ static int __init hypfs_init(void)
rc = -ENODATA;
goto fail_hypfs_diag_exit;
}
if (hypfs_sprp_init()) {
rc = -ENODATA;
goto fail_hypfs_vm_exit;
}
s390_kobj = kobject_create_and_add("s390", hypervisor_kobj);
if (!s390_kobj) {
rc = -ENOMEM;
goto fail_hypfs_vm_exit;
goto fail_hypfs_sprp_exit;
}
rc = register_filesystem(&hypfs_type);
if (rc)
@@ -490,6 +494,8 @@ static int __init hypfs_init(void)
fail_filesystem:
kobject_put(s390_kobj);
fail_hypfs_sprp_exit:
hypfs_sprp_exit();
fail_hypfs_vm_exit:
hypfs_vm_exit();
fail_hypfs_diag_exit:
@@ -502,11 +508,12 @@ fail_dbfs_exit:
static void __exit hypfs_exit(void)
{
hypfs_diag_exit();
hypfs_vm_exit();
hypfs_dbfs_exit();
unregister_filesystem(&hypfs_type);
kobject_put(s390_kobj);
hypfs_sprp_exit();
hypfs_vm_exit();
hypfs_diag_exit();
hypfs_dbfs_exit();
}
module_init(hypfs_init)