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authorAlexey Dobriyan <adobriyan@gmail.com>2009-12-14 18:00:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:25 -0800
commit6613c5e8603bc41741487828f48c6a4d701f7814 (patch)
tree821a045f88cbe2a03aed9aa4d8c56b0015b2b208 /arch/um/drivers/mconsole_kern.c
parent2886a8bdfa007053b414ab01741a98c18c376a85 (diff)
downloadop-kernel-dev-6613c5e8603bc41741487828f48c6a4d701f7814.zip
op-kernel-dev-6613c5e8603bc41741487828f48c6a4d701f7814.tar.gz
uml: convert to seq_file/proc_fops
Convert code away from ->read_proc/->write_proc interfaces. Switch to proc_create()/proc_create_data() which make addition of proc entries reliable wrt NULL ->proc_fops, NULL ->data and so on. Problem with ->read_proc et al is described here commit 786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in /proc entries" Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/drivers/mconsole_kern.c')
-rw-r--r--arch/um/drivers/mconsole_kern.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index e14629c..f0fa47f 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -833,8 +833,8 @@ static int __init mconsole_init(void)
__initcall(mconsole_init);
-static int write_proc_mconsole(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static ssize_t mconsole_proc_write(struct file *file,
+ const char __user *buffer, size_t count, loff_t *pos)
{
char *buf;
@@ -855,6 +855,11 @@ static int write_proc_mconsole(struct file *file, const char __user *buffer,
return count;
}
+static const struct file_operations mconsole_proc_fops = {
+ .owner = THIS_MODULE,
+ .write = mconsole_proc_write,
+};
+
static int create_proc_mconsole(void)
{
struct proc_dir_entry *ent;
@@ -862,15 +867,12 @@ static int create_proc_mconsole(void)
if (notify_socket == NULL)
return 0;
- ent = create_proc_entry("mconsole", S_IFREG | 0200, NULL);
+ ent = proc_create("mconsole", 0200, NULL, &mconsole_proc_fops);
if (ent == NULL) {
printk(KERN_INFO "create_proc_mconsole : create_proc_entry "
"failed\n");
return 0;
}
-
- ent->read_proc = NULL;
- ent->write_proc = write_proc_mconsole;
return 0;
}
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