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Message-ID: <20130416182630.27773.83021.stgit@warthog.procyon.org.uk>
Date: Tue, 16 Apr 2013 19:26:30 +0100
From: David Howells <dhowells@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Neela Syam Kolli <megaraidlinux@....com>,
devel@...verdev.osuosl.org,
Mauro Carvalho Chehab <mchehab@...hat.com>,
linux-scsi@...r.kernel.org,
Jerry Chuang <jerry-chuang@...ltek.com>,
linux-wireless@...r.kernel.org, viro@...iv.linux.org.uk,
linux-fsdevel@...r.kernel.org
Subject: [PATCH 10/28] proc: Add proc_mkdir_data() [RFC]
Add proc_mkdir_data() to allow procfs directories to be created that are
annotated at the time of creation with private data rather than doing this
post-creation. This means no access is then required to the proc_dir_entry
struct to set this.
Signed-off-by: David Howells <dhowells@...hat.com>
cc: Neela Syam Kolli <megaraidlinux@....com>
cc: Jerry Chuang <jerry-chuang@...ltek.com>
cc: Mauro Carvalho Chehab <mchehab@...hat.com>
cc: linux-scsi@...r.kernel.org
cc: devel@...verdev.osuosl.org
cc: linux-wireless@...r.kernel.org
---
drivers/message/i2o/i2o_proc.c | 8 ++------
drivers/scsi/megaraid.c | 4 ++--
drivers/staging/rtl8192u/r8192U_core.c | 3 +--
fs/proc/generic.c | 30 ++++++++++++------------------
include/linux/proc_fs.h | 11 ++++++++---
5 files changed, 25 insertions(+), 31 deletions(-)
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index 70a840f..b7d87cd 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -1913,14 +1913,12 @@ static void i2o_proc_device_add(struct proc_dir_entry *dir,
osm_debug("adding device /proc/i2o/%s/%s\n", dev->iop->name, buff);
- devdir = proc_mkdir(buff, dir);
+ devdir = proc_mkdir_data(buff, 0, dir, dev);
if (!devdir) {
osm_warn("Could not allocate procdir!\n");
return;
}
- devdir->data = dev;
-
i2o_proc_create_entries(devdir, generic_dev_entries, dev);
/* Inform core that we want updates about this device's status */
@@ -1954,12 +1952,10 @@ static int i2o_proc_iop_add(struct proc_dir_entry *dir,
osm_debug("adding IOP /proc/i2o/%s\n", c->name);
- iopdir = proc_mkdir(c->name, dir);
+ iopdir = proc_mkdir_data(c->name, 0, dir, c);
if (!iopdir)
return -1;
- iopdir->data = c;
-
i2o_proc_create_entries(iopdir, i2o_proc_generic_iop_entries, c);
list_for_each_entry(dev, &c->devices, list)
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index a1c90bd..ef3384d 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -2818,12 +2818,12 @@ mega_create_proc_entry(int index, struct proc_dir_entry *parent)
sprintf(string, "hba%d", adapter->host->host_no);
- dir = adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
+ dir = adapter->controller_proc_dir_entry =
+ proc_mkdir_data(string, 0, parent, adapter);
if(!dir) {
printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
return;
}
- dir->data = adapter;
for (f = mega_proc_files; f->name; f++) {
de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops,
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 433c3df..d81d7d5 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -672,13 +672,12 @@ void rtl8192_proc_init_one(struct net_device *dev)
struct r8192_priv *priv = (struct r8192_priv *)ieee80211_priv(dev);
if (rtl8192_proc) {
- priv->dir_dev = proc_mkdir(dev->name, rtl8192_proc);
+ priv->dir_dev = proc_mkdir_data(dev->name, 0, rtl8192_proc, dev);
if (!priv->dir_dev) {
RT_TRACE(COMP_ERR, "Unable to initialize /proc/net/rtl8192/%s\n",
dev->name);
return;
}
- priv->dir_dev->data = dev;
for (f = rtl8192_proc_files; f->name[0]; f++) {
if (!proc_create_data(f->name, S_IFREG | S_IRUGO,
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 5f6f6c3..4074da5 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -428,13 +428,17 @@ struct proc_dir_entry *proc_symlink(const char *name,
}
EXPORT_SYMBOL(proc_symlink);
-struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
- struct proc_dir_entry *parent)
+struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
+ struct proc_dir_entry *parent, void *data)
{
struct proc_dir_entry *ent;
+ if (mode == 0)
+ mode = S_IRUGO | S_IXUGO;
+
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
+ ent->data = data;
if (proc_register(parent, ent) < 0) {
kfree(ent);
ent = NULL;
@@ -442,29 +446,19 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
}
return ent;
}
-EXPORT_SYMBOL(proc_mkdir_mode);
+EXPORT_SYMBOL_GPL(proc_mkdir_data);
-struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
- struct proc_dir_entry *parent)
+struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
+ struct proc_dir_entry *parent)
{
- struct proc_dir_entry *ent;
-
- ent = __proc_create(&parent, name, S_IFDIR | S_IRUGO | S_IXUGO, 2);
- if (ent) {
- ent->data = net;
- if (proc_register(parent, ent) < 0) {
- kfree(ent);
- ent = NULL;
- }
- }
- return ent;
+ return proc_mkdir_data(name, mode, parent, NULL);
}
-EXPORT_SYMBOL_GPL(proc_net_mkdir);
+EXPORT_SYMBOL(proc_mkdir_mode);
struct proc_dir_entry *proc_mkdir(const char *name,
struct proc_dir_entry *parent)
{
- return proc_mkdir_mode(name, S_IRUGO | S_IXUGO, parent);
+ return proc_mkdir_data(name, 0, parent, NULL);
}
EXPORT_SYMBOL(proc_mkdir);
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 80d9e24..e5d8f69 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -73,6 +73,8 @@ extern int remove_proc_subtree(const char *name, struct proc_dir_entry *parent);
extern struct proc_dir_entry *proc_symlink(const char *,
struct proc_dir_entry *, const char *);
extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *);
+extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
+ struct proc_dir_entry *, void *);
extern struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
struct proc_dir_entry *parent);
@@ -82,9 +84,6 @@ static inline struct proc_dir_entry *proc_create(const char *name, umode_t mode,
return proc_create_data(name, mode, parent, proc_fops, NULL);
}
-extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
- struct proc_dir_entry *parent);
-
extern void proc_set_size(struct proc_dir_entry *, loff_t);
extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
#else
@@ -153,4 +152,10 @@ static inline void *PDE_DATA(const struct inode *inode)
return PROC_I(inode)->pde->data;
}
+static inline struct proc_dir_entry *proc_net_mkdir(
+ struct net *net, const char *name, struct proc_dir_entry *parent)
+{
+ return proc_mkdir_data(name, 0, parent, net);
+}
+
#endif /* _LINUX_PROC_FS_H */
--
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