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Date: Tue, 29 Jul 2008 06:08:13 +0400
From: Alexey Dobriyan <adobriyan@...il.com>
To: akpm@...l.org, alan@...rguk.ukuu.org.uk
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 13/13] proc tty: switch ircomm to ->proc_fops
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
net/irda/ircomm/ircomm_tty.c | 257 +++++++++++++++++++++++--------------------
1 file changed, 140 insertions(+), 117 deletions(-)
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -34,6 +34,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/seq_file.h>
#include <linux/termios.h>
#include <linux/tty.h>
#include <linux/interrupt.h>
@@ -72,8 +73,7 @@ static int ircomm_tty_control_indication(void *instance, void *sap,
static void ircomm_tty_flow_indication(void *instance, void *sap,
LOCAL_FLOW cmd);
#ifdef CONFIG_PROC_FS
-static int ircomm_tty_read_proc(char *buf, char **start, off_t offset, int len,
- int *eof, void *unused);
+static const struct file_operations ircomm_tty_proc_fops;
#endif /* CONFIG_PROC_FS */
static struct tty_driver *driver;
@@ -98,7 +98,7 @@ static const struct tty_operations ops = {
.hangup = ircomm_tty_hangup,
.wait_until_sent = ircomm_tty_wait_until_sent,
#ifdef CONFIG_PROC_FS
- .read_proc = ircomm_tty_read_proc,
+ .proc_fops = &ircomm_tty_proc_fops,
#endif /* CONFIG_PROC_FS */
};
@@ -1244,150 +1244,173 @@ static void ircomm_tty_flow_indication(void *instance, void *sap,
}
#ifdef CONFIG_PROC_FS
-static int ircomm_tty_line_info(struct ircomm_tty_cb *self, char *buf)
+static int ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m)
{
- int ret=0;
+ char *sep;
- ret += sprintf(buf+ret, "State: %s\n", ircomm_tty_state[self->state]);
+ seq_printf(m, "State: %s\n", ircomm_tty_state[self->state]);
- ret += sprintf(buf+ret, "Service type: ");
+ seq_puts(m, "Service type: ");
if (self->service_type & IRCOMM_9_WIRE)
- ret += sprintf(buf+ret, "9_WIRE");
+ seq_puts(m, "9_WIRE");
else if (self->service_type & IRCOMM_3_WIRE)
- ret += sprintf(buf+ret, "3_WIRE");
+ seq_puts(m, "3_WIRE");
else if (self->service_type & IRCOMM_3_WIRE_RAW)
- ret += sprintf(buf+ret, "3_WIRE_RAW");
+ seq_puts(m, "3_WIRE_RAW");
else
- ret += sprintf(buf+ret, "No common service type!\n");
- ret += sprintf(buf+ret, "\n");
-
- ret += sprintf(buf+ret, "Port name: %s\n", self->settings.port_name);
-
- ret += sprintf(buf+ret, "DTE status: ");
- if (self->settings.dte & IRCOMM_RTS)
- ret += sprintf(buf+ret, "RTS|");
- if (self->settings.dte & IRCOMM_DTR)
- ret += sprintf(buf+ret, "DTR|");
- if (self->settings.dte)
- ret--; /* remove the last | */
- ret += sprintf(buf+ret, "\n");
-
- ret += sprintf(buf+ret, "DCE status: ");
- if (self->settings.dce & IRCOMM_CTS)
- ret += sprintf(buf+ret, "CTS|");
- if (self->settings.dce & IRCOMM_DSR)
- ret += sprintf(buf+ret, "DSR|");
- if (self->settings.dce & IRCOMM_CD)
- ret += sprintf(buf+ret, "CD|");
- if (self->settings.dce & IRCOMM_RI)
- ret += sprintf(buf+ret, "RI|");
- if (self->settings.dce)
- ret--; /* remove the last | */
- ret += sprintf(buf+ret, "\n");
-
- ret += sprintf(buf+ret, "Configuration: ");
+ seq_puts(m, "No common service type!\n");
+ seq_putc(m, '\n');
+
+ seq_printf(m, "Port name: %s\n", self->settings.port_name);
+
+ seq_puts(m, "DTE status: ");
+ sep = "";
+ if (self->settings.dte & IRCOMM_RTS) {
+ seq_printf(m, "%sRTS", sep);
+ sep = "|";
+ }
+ if (self->settings.dte & IRCOMM_DTR) {
+ seq_printf(m, "%sDTR", sep);
+ sep = "|";
+ }
+ seq_putc(m, '\n');
+
+ seq_puts(m, "DCE status: ");
+ sep = "";
+ if (self->settings.dce & IRCOMM_CTS) {
+ seq_printf(m, "%sCTS", sep);
+ sep = "|";
+ }
+ if (self->settings.dce & IRCOMM_DSR) {
+ seq_printf(m, "%sDSR", sep);
+ sep = "|";
+ }
+ if (self->settings.dce & IRCOMM_CD) {
+ seq_printf(m, "%sCD", sep);
+ sep = "|";
+ }
+ if (self->settings.dce & IRCOMM_RI) {
+ seq_printf(m, "%sRI", sep);
+ sep = "|";
+ }
+ seq_putc(m, '\n');
+
+ seq_puts(m, "Configuration: ");
if (!self->settings.null_modem)
- ret += sprintf(buf+ret, "DTE <-> DCE\n");
+ seq_puts(m, "DTE <-> DCE\n");
else
- ret += sprintf(buf+ret,
- "DTE <-> DTE (null modem emulation)\n");
-
- ret += sprintf(buf+ret, "Data rate: %d\n", self->settings.data_rate);
-
- ret += sprintf(buf+ret, "Flow control: ");
- if (self->settings.flow_control & IRCOMM_XON_XOFF_IN)
- ret += sprintf(buf+ret, "XON_XOFF_IN|");
- if (self->settings.flow_control & IRCOMM_XON_XOFF_OUT)
- ret += sprintf(buf+ret, "XON_XOFF_OUT|");
- if (self->settings.flow_control & IRCOMM_RTS_CTS_IN)
- ret += sprintf(buf+ret, "RTS_CTS_IN|");
- if (self->settings.flow_control & IRCOMM_RTS_CTS_OUT)
- ret += sprintf(buf+ret, "RTS_CTS_OUT|");
- if (self->settings.flow_control & IRCOMM_DSR_DTR_IN)
- ret += sprintf(buf+ret, "DSR_DTR_IN|");
- if (self->settings.flow_control & IRCOMM_DSR_DTR_OUT)
- ret += sprintf(buf+ret, "DSR_DTR_OUT|");
- if (self->settings.flow_control & IRCOMM_ENQ_ACK_IN)
- ret += sprintf(buf+ret, "ENQ_ACK_IN|");
- if (self->settings.flow_control & IRCOMM_ENQ_ACK_OUT)
- ret += sprintf(buf+ret, "ENQ_ACK_OUT|");
- if (self->settings.flow_control)
- ret--; /* remove the last | */
- ret += sprintf(buf+ret, "\n");
-
- ret += sprintf(buf+ret, "Flags: ");
- if (self->flags & ASYNC_CTS_FLOW)
- ret += sprintf(buf+ret, "ASYNC_CTS_FLOW|");
- if (self->flags & ASYNC_CHECK_CD)
- ret += sprintf(buf+ret, "ASYNC_CHECK_CD|");
- if (self->flags & ASYNC_INITIALIZED)
- ret += sprintf(buf+ret, "ASYNC_INITIALIZED|");
- if (self->flags & ASYNC_LOW_LATENCY)
- ret += sprintf(buf+ret, "ASYNC_LOW_LATENCY|");
- if (self->flags & ASYNC_CLOSING)
- ret += sprintf(buf+ret, "ASYNC_CLOSING|");
- if (self->flags & ASYNC_NORMAL_ACTIVE)
- ret += sprintf(buf+ret, "ASYNC_NORMAL_ACTIVE|");
- if (self->flags)
- ret--; /* remove the last | */
- ret += sprintf(buf+ret, "\n");
-
- ret += sprintf(buf+ret, "Role: %s\n", self->client ?
- "client" : "server");
- ret += sprintf(buf+ret, "Open count: %d\n", self->open_count);
- ret += sprintf(buf+ret, "Max data size: %d\n", self->max_data_size);
- ret += sprintf(buf+ret, "Max header size: %d\n", self->max_header_size);
+ seq_puts(m, "DTE <-> DTE (null modem emulation)\n");
+
+ seq_printf(m, "Data rate: %d\n", self->settings.data_rate);
+
+ seq_puts(m, "Flow control: ");
+ sep = "";
+ if (self->settings.flow_control & IRCOMM_XON_XOFF_IN) {
+ seq_printf(m, "%sXON_XOFF_IN", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_XON_XOFF_OUT) {
+ seq_printf(m, "%sXON_XOFF_OUT", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_RTS_CTS_IN) {
+ seq_printf(m, "%sRTS_CTS_IN", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_RTS_CTS_OUT) {
+ seq_printf(m, "%sRTS_CTS_OUT", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_DSR_DTR_IN) {
+ seq_printf(m, "%sDSR_DTR_IN", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_DSR_DTR_OUT) {
+ seq_printf(m, "%sDSR_DTR_OUT", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_ENQ_ACK_IN) {
+ seq_printf(m, "%sENQ_ACK_IN", sep);
+ sep = "|";
+ }
+ if (self->settings.flow_control & IRCOMM_ENQ_ACK_OUT) {
+ seq_printf(m, "%sENQ_ACK_OUT", sep);
+ sep = "|";
+ }
+ seq_putc(m, '\n');
+
+ seq_puts(m, "Flags: ");
+ sep = "";
+ if (self->flags & ASYNC_CTS_FLOW) {
+ seq_printf(m, "%sASYNC_CTS_FLOW", sep);
+ sep = "|";
+ }
+ if (self->flags & ASYNC_CHECK_CD) {
+ seq_printf(m, "%sASYNC_CHECK_CD", sep);
+ sep = "|";
+ }
+ if (self->flags & ASYNC_INITIALIZED) {
+ seq_printf(m, "%sASYNC_INITIALIZED", sep);
+ sep = "|";
+ }
+ if (self->flags & ASYNC_LOW_LATENCY) {
+ seq_printf(m, "%sASYNC_LOW_LATENCY", sep);
+ sep = "|";
+ }
+ if (self->flags & ASYNC_CLOSING) {
+ seq_printf(m, "%sASYNC_CLOSING", sep);
+ sep = "|";
+ }
+ if (self->flags & ASYNC_NORMAL_ACTIVE) {
+ seq_printf(m, "%sASYNC_NORMAL_ACTIVE", sep);
+ sep = "|";
+ }
+ seq_putc(m, '\n');
+
+ seq_printf(m, "Role: %s\n", self->client ? "client" : "server");
+ seq_printf(m, "Open count: %d\n", self->open_count);
+ seq_printf(m, "Max data size: %d\n", self->max_data_size);
+ seq_printf(m, "Max header size: %d\n", self->max_header_size);
if (self->tty)
- ret += sprintf(buf+ret, "Hardware: %s\n",
+ seq_printf(m, "Hardware: %s\n",
self->tty->hw_stopped ? "Stopped" : "Running");
- ret += sprintf(buf+ret, "\n");
- return ret;
+ seq_putc(m, '\n');
+ return 0;
}
-
-/*
- * Function ircomm_tty_read_proc (buf, start, offset, len, eof, unused)
- *
- *
- *
- */
-static int ircomm_tty_read_proc(char *buf, char **start, off_t offset, int len,
- int *eof, void *unused)
+static int ircomm_tty_proc_show(struct seq_file *m, void *v)
{
struct ircomm_tty_cb *self;
- int count = 0, l;
- off_t begin = 0;
unsigned long flags;
spin_lock_irqsave(&ircomm_tty->hb_spinlock, flags);
self = (struct ircomm_tty_cb *) hashbin_get_first(ircomm_tty);
- while ((self != NULL) && (count < 4000)) {
+ while (self != NULL) {
if (self->magic != IRCOMM_TTY_MAGIC)
break;
- l = ircomm_tty_line_info(self, buf + count);
- count += l;
- if (count+begin > offset+len)
- goto done;
- if (count+begin < offset) {
- begin += count;
- count = 0;
- }
-
+ ircomm_tty_line_info(self, m);
self = (struct ircomm_tty_cb *) hashbin_get_next(ircomm_tty);
}
- *eof = 1;
-done:
spin_unlock_irqrestore(&ircomm_tty->hb_spinlock, flags);
+ return 0;
+}
- if (offset >= count+begin)
- return 0;
- *start = buf + (offset-begin);
- return ((len < begin+count-offset) ? len : begin+count-offset);
+static int ircomm_tty_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ircomm_tty_proc_show, NULL);
}
+
+static const struct file_operations ircomm_tty_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = ircomm_tty_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
#endif /* CONFIG_PROC_FS */
MODULE_AUTHOR("Dag Brattli <dagb@...uit.no>");
--
1.5.4.5
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