From 9b24013426e03a501fcaa6334ba5a9b48a8da3d1 Mon Sep 17 00:00:00 2001
From: Marc Dionne <marc.dionne@your-file-system.com>
Date: Mon, 6 May 2013 20:20:07 -0400
Subject: [PATCH] Linux 3.10: Replace create_proc_entry() with proc_create()

Add an afs_proc_create() compat function that uses the
appropriate kernel function based on a configure test.

Change-Id: I4f3929849af032f2a483bc06bc5769f64085f1c4
Reviewed-on: http://gerrit.openafs.org/9854
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
---
 acinclude.m4               |  3 +++
 src/afs/LINUX/osi_compat.h | 13 +++++++++++++
 src/afs/LINUX/osi_ioctl.c  |  9 +++++----
 src/afs/LINUX/osi_proc.c   | 16 +++++++---------
 src/afs/sysincludes.h      |  1 +
 5 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index d84bce5..6ffb686 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -936,6 +936,9 @@ case $AFS_SYSNAME in *_linux* | *_umlinux*)
 				     [#include <linux/fs.h>
 				      #include <linux/namei.h>],
 				     [path_lookup(NULL, 0, NULL);])
+		 AC_CHECK_LINUX_FUNC([proc_create],
+				     [#include <linux/proc_fs.h>],
+				     [proc_create(NULL, 0, NULL, NULL);])
 		 AC_CHECK_LINUX_FUNC([rcu_read_lock],
 				     [#include <linux/rcupdate.h>],
 				     [rcu_read_lock();])
diff --git a/src/afs/LINUX/osi_compat.h b/src/afs/LINUX/osi_compat.h
index dc2c26a..ce9178e 100644
--- a/src/afs/LINUX/osi_compat.h
+++ b/src/afs/LINUX/osi_compat.h
@@ -595,4 +595,17 @@ afs_truncate(struct inode *inode, int len)
     return code;
 }
 
+static inline struct proc_dir_entry *
+afs_proc_create(char *name, umode_t mode, struct proc_dir_entry *parent, struct file_operations *fops) {
+#if defined(HAVE_LINUX_PROC_CREATE)
+    return proc_create(name, mode, parent, fops);
+#else
+    struct proc_dir_entry *entry;
+    entry = create_proc_entry(name, mode, parent);
+    if (entry)
+	entry->proc_fops = fops;
+    return entry;
+#endif
+}
+
 #endif /* AFS_LINUX_OSI_COMPAT_H */
diff --git a/src/afs/LINUX/osi_ioctl.c b/src/afs/LINUX/osi_ioctl.c
index 45e0fcd..82e907b 100644
--- a/src/afs/LINUX/osi_ioctl.c
+++ b/src/afs/LINUX/osi_ioctl.c
@@ -29,12 +29,13 @@
 #include <linux/ioctl32.h>
 #endif
 
-#include <linux/proc_fs.h>
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
 
+#include "osi_compat.h"
+
 extern struct proc_dir_entry *openafs_procfs;
 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
 static int ioctl32_done;
@@ -107,10 +108,10 @@ osi_ioctl_init(void)
 {
     struct proc_dir_entry *entry;
 
-    entry = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
-    entry->proc_fops = &afs_syscall_fops;
+    entry = afs_proc_create(PROC_SYSCALL_NAME, 0666, openafs_procfs, &afs_syscall_fops);
 #if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
-    entry->owner = THIS_MODULE;
+    if (entry)
+	entry->owner = THIS_MODULE;
 #endif
 
 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
diff --git a/src/afs/LINUX/osi_proc.c b/src/afs/LINUX/osi_proc.c
index b5219fa..71983dc 100644
--- a/src/afs/LINUX/osi_proc.c
+++ b/src/afs/LINUX/osi_proc.c
@@ -29,12 +29,13 @@
 # include <asm/ia32_unistd.h>
 #endif
 
-#include <linux/proc_fs.h>
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
 
+#include "osi_compat.h"
+
 struct proc_dir_entry *openafs_procfs;
 
 #ifdef HAVE_LINUX_SEQ_FILE_H
@@ -379,21 +380,18 @@ osi_proc_init(void)
     openafs_procfs = proc_mkdir(path, NULL);
 #endif
 #ifdef HAVE_LINUX_SEQ_FILE_H
-    entry = create_proc_entry("unixusers", 0, openafs_procfs);
-    if (entry) {
-	entry->proc_fops = &afs_unixuser_fops;
+    entry = afs_proc_create("unixusers", 0, openafs_procfs, &afs_unixuser_fops);
 # if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
+    if (entry)
 	entry->owner = THIS_MODULE;
 # endif
-    }
-    entry = create_proc_entry(PROC_CELLSERVDB_NAME, 0, openafs_procfs);
-    if (entry)
-	entry->proc_fops = &afs_csdb_operations;
+    entry = afs_proc_create(PROC_CELLSERVDB_NAME, 0, openafs_procfs, &afs_csdb_operations);
 #else
     entry = create_proc_info_entry(PROC_CELLSERVDB_NAME, (S_IFREG|S_IRUGO), openafs_procfs, csdbproc_info);
 #endif
 #if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
-    entry->owner = THIS_MODULE;
+    if (entry)
+	entry->owner = THIS_MODULE;
 #endif
 }
 
diff --git a/src/afs/sysincludes.h b/src/afs/sysincludes.h
index e8d072c..34501b5 100644
--- a/src/afs/sysincludes.h
+++ b/src/afs/sysincludes.h
@@ -154,6 +154,7 @@ struct xfs_inode_info {
 # include <linux/sched.h>
 # include <linux/mm.h>
 # include <linux/slab.h>
+# include <linux/proc_fs.h>
 # include <linux/string.h>
 # if defined(HAVE_LINUX_SEMAPHORE_H)
 #  include <linux/semaphore.h>
-- 
1.9.4