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Date: Thu, 17 Mar 2011 23:22:33 +0100 (CET)
From: Jesper Juhl <jj@...osbits.net>
To: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
cc: linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
James Bottomley <James.Bottomley@...senPartnership.com>,
Christoph Hellwig <hch@....de>,
Mike Christie <michaelc@...wisc.edu>,
Hannes Reinecke <hare@...e.de>,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
Boaz Harrosh <bharrosh@...asas.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Andrew Morton <akpm@...ux-foundation.org>,
Douglas Gilbert <dgilbert@...erlog.com>
Subject: Re: [RFC-v3 03/12] iscsi-target: Add TCM v4 compatiable ConfigFS
control plane
On Thu, 17 Mar 2011, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@...ux-iscsi.org>
>
> This patch adds support for /sys/kernel/config/target/iscsi using
> TCM v4.0 compatiable calls following target_core_fabric_configfs.c
>
> This includes a number of iSCSI fabric dependent attributes upon
> target_core_fabric_configfs.c provided struct config_item_types from
> include/target/target_core_configfs.hstruct target_fabric_configfs_template
>
> It also includes iscsi_target_nodeattrib.[c,h] for handling the
> lio_target_nacl_attrib_attrs[] store/show for iSCSI fabric dependent
> attributes.
>
> Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
> ---
> drivers/target/iscsi/iscsi_target_configfs.c | 1593 ++++++++++++++++++++++++
> drivers/target/iscsi/iscsi_target_configfs.h | 7 +
> drivers/target/iscsi/iscsi_target_nodeattrib.c | 264 ++++
> drivers/target/iscsi/iscsi_target_nodeattrib.h | 14 +
> 4 files changed, 1878 insertions(+), 0 deletions(-)
> create mode 100644 drivers/target/iscsi/iscsi_target_configfs.c
> create mode 100644 drivers/target/iscsi/iscsi_target_configfs.h
> create mode 100644 drivers/target/iscsi/iscsi_target_nodeattrib.c
> create mode 100644 drivers/target/iscsi/iscsi_target_nodeattrib.h
>
> diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
> new file mode 100644
> index 0000000..ae88092
> --- /dev/null
> +++ b/drivers/target/iscsi/iscsi_target_configfs.c
> @@ -0,0 +1,1593 @@
> +/*******************************************************************************
> + * This file contains the configfs implementation for iSCSI Target mode
> + * from the LIO-Target Project.
> + *
> + * ?? Copyright 2007-2011 RisingTide Systems LLC.
"??" ?
You have this in other files as well - what's the point of those two
question marks?
> +struct se_tpg_np *lio_target_call_addnptotpg(
> + struct se_portal_group *se_tpg,
> + struct config_group *group,
> + const char *name)
> +{
> + struct iscsi_portal_group *tpg;
> + struct iscsi_tpg_np *tpg_np;
> + char *str, *str2, *end_ptr, *ip_str, *port_str;
> + struct iscsi_np_addr np_addr;
> + u32 ipv4 = 0;
> + int ret;
> + char buf[MAX_PORTAL_LEN + 1];
> +
> + if (strlen(name) > MAX_PORTAL_LEN) {
> + printk(KERN_ERR "strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
> + (int)strlen(name), MAX_PORTAL_LEN);
> + return ERR_PTR(-EOVERFLOW);
> + }
> + memset(buf, 0, MAX_PORTAL_LEN);
memset(buf, 0, MAX_PORTAL_LEN + 1);
> +#define DEF_NACL_ATTRIB(name) \
> +static ssize_t iscsi_nacl_attrib_show_##name( \
> + struct se_node_acl *se_nacl, \
> + char *page) \
> +{ \
> + struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
> + se_node_acl); \
> + ssize_t rb; \
> + \
> + rb = sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \
> + return rb; \
Why the 'rb' variable? Why not just
return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name);
?
> +#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
> +static ssize_t __iscsi_##prefix##_show_##name( \
> + struct iscsi_node_acl *nacl, \
> + char *page) \
> +{ \
> + struct iscsi_node_auth *auth = &nacl->node_auth; \
> + ssize_t rb; \
> + \
> + if (!capable(CAP_SYS_ADMIN)) \
> + return -EPERM; \
> + rb = snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
> + return rb; \
Kill 'rb' and just
return snprintf(page, PAGE_SIZE, "%s\n", auth->name);
I'd say.
> +#define __DEF_NACL_AUTH_INT(prefix, name) \
> +static ssize_t __iscsi_##prefix##_show_##name( \
> + struct iscsi_node_acl *nacl, \
> + char *page) \
> +{ \
> + struct iscsi_node_auth *auth = &nacl->node_auth; \
> + ssize_t rb; \
> + \
> + if (!capable(CAP_SYS_ADMIN)) \
> + return -EPERM; \
> + \
> + rb = snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
> + return rb; \
Just kill that pointless 'rb' variable..
> +static ssize_t lio_target_nacl_show_info(
> + struct se_node_acl *se_nacl,
> + char *page)
> +{
> + struct iscsi_session *sess;
> + struct iscsi_conn *conn;
> + struct se_session *se_sess;
> + unsigned char *ip, buf_ipv4[IPV4_BUF_SIZE];
> + ssize_t rb = 0;
> +
> + spin_lock_bh(&se_nacl->nacl_sess_lock);
> + se_sess = se_nacl->nacl_sess;
> + if (!se_sess) {
> + rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
> + " Endpoint: %s\n", se_nacl->initiatorname);
> + } else {
> + sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
> +
Is this cast needed?
> +static ssize_t iscsi_tpg_param_store_##name( \
> + struct se_portal_group *se_tpg, \
> + const char *page, \
> + size_t count) \
> +{ \
> + struct iscsi_portal_group *tpg = container_of(se_tpg, \
> + struct iscsi_portal_group, tpg_se_tpg); \
> + char *buf; \
> + int ret; \
> + \
> + buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
> + if (!buf) \
> + return -ENOMEM; \
> + snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
> + buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
> + \
> + if (iscsi_get_tpg(tpg) < 0) \
> + return -EINVAL; \
You just leaked "buf".
--
Jesper Juhl <jj@...osbits.net> http://www.chaosbits.net/
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please.
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