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Date: Fri, 08 Feb 2008 14:08:09 +0300
From: Pavel Emelyanov <xemul@...nvz.org>
To: David Miller <davem@...emloft.net>
CC: Vlad Yasevich <vladislav.yasevich@...com>,
lksctp-developers@...ts.sourceforge.net,
Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 2/2][SCTP]: Convert sctp_dbg_objcnt to seq files.
This makes the code use a good proc API and the text ~50 bytes shorter.
Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
---
net/sctp/objcnt.c | 85 +++++++++++++++++++++++++++-------------------------
1 files changed, 44 insertions(+), 41 deletions(-)
diff --git a/net/sctp/objcnt.c b/net/sctp/objcnt.c
index 2cf6ad6..2b9ac00 100644
--- a/net/sctp/objcnt.c
+++ b/net/sctp/objcnt.c
@@ -80,61 +80,64 @@ static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = {
/* Callback from procfs to read out objcount information.
* Walk through the entries in the sctp_dbg_objcnt array, dumping
* the raw object counts for each monitored type.
- *
- * This code was modified from similar code in route.c
*/
-static int sctp_dbg_objcnt_read(char *buffer, char **start, off_t offset,
- int length, int *eof, void *data)
+static int sctp_objcnt_seq_show(struct seq_file *seq, void *v)
{
- int len = 0;
- off_t pos = 0;
- int entries;
int i;
char temp[128];
- /* How many entries? */
- entries = ARRAY_SIZE(sctp_dbg_objcnt);
-
- /* Walk the entries and print out the debug information
- * for proc fs.
- */
- for (i = 0; i < entries; i++) {
- pos += 128;
-
- /* Skip ahead. */
- if (pos <= offset) {
- len = 0;
- continue;
- }
- /* Print out each entry. */
- sprintf(temp, "%s: %d",
- sctp_dbg_objcnt[i].label,
- atomic_read(sctp_dbg_objcnt[i].counter));
-
- sprintf(buffer + len, "%-127s\n", temp);
- len += 128;
- if (pos >= offset+length)
- goto done;
- }
-
-done:
- *start = buffer + len - (pos - offset);
- len = pos - offset;
- if (len > length)
- len = length;
-
- return len;
+ i = (int)*(loff_t *)v;
+ sprintf(temp, "%s: %d", sctp_dbg_objcnt[i].label,
+ atomic_read(sctp_dbg_objcnt[i].counter));
+ seq_printf(seq, "%-127s\n", temp);
+ return 0;
+}
+
+static void *sctp_objcnt_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos;
+}
+
+static void sctp_objcnt_seq_stop(struct seq_file *seq, void *v)
+{
+}
+
+static void * sctp_objcnt_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+ return (*pos >= ARRAY_SIZE(sctp_dbg_objcnt)) ? NULL : (void *)pos;
}
+static const struct seq_operations sctp_objcnt_seq_ops = {
+ .start = sctp_objcnt_seq_start,
+ .next = sctp_objcnt_seq_next,
+ .stop = sctp_objcnt_seq_stop,
+ .show = sctp_objcnt_seq_show,
+};
+
+static int sctp_objcnt_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &sctp_objcnt_seq_ops);
+}
+
+static const struct file_operations sctp_objcnt_ops = {
+ .open = sctp_objcnt_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
/* Initialize the objcount in the proc filesystem. */
void sctp_dbg_objcnt_init(void)
{
struct proc_dir_entry *ent;
- ent = create_proc_read_entry("sctp_dbg_objcnt", 0, proc_net_sctp,
- sctp_dbg_objcnt_read, NULL);
+
+ ent = create_proc_entry("sctp_dbg_objcnt", 0, proc_net_sctp);
if (!ent)
printk(KERN_WARNING
"sctp_dbg_objcnt: Unable to create /proc entry.\n");
+ else
+ ent->proc_fops = &sctp_objcnt_ops;
}
/* Cleanup the objcount entry in the proc filesystem. */
--
1.5.3.4
--
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