Skip to content

L
linux
Commit ca4a6985 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
Browse files
Options

[PATCH] ppc64: Fix rtas file mess 

This does the seq_file conversion + annotation + cleanup + race fixes
for arch/ppc64/kernel/rtas-proc.c.

How the fuck did that file manage to get anywhere near the tree, anyway?
Take a look at guy's "implementation" of sprintf(buf, "%04d", num), for
example:

<vomit>
	/* construct the sensor number like 0003 */
	/* fill with zeros */
	n = sprintf(tmp, "%d", s.token);
	len = strlen(tmp);
	while (strlen(tmp) < 4)
		n += sprintf (tmp+n, "0");

	/* invert the string */
	while (tmp[i]) {
		if (i<len)
			tmp2[4-len+i] = tmp[i];
		else
			tmp2[3-i] = tmp[i];
		i++;
	}
	tmp2[4] = '\0';
</vomit>

And it's full of that level of lusing ;-/
parent b5a68cfc
Hide whitespace changes
Inline Side-by-side
Showing with 272 additions and 407 deletions
arch/ppc64/kernel/rtas-proc.c
View file @ ca4a6985
......@@ -21,6 +21,7 @@
#include <linux/time.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/seq_file.h>
#include <asm/uaccess.h>
#include <asm/bitops.h>
......@@ -137,66 +138,122 @@ struct rtas_sensors {
/* ****************************************************************** */
/* Declarations */
static int ppc_rtas_sensor_read(char * buf, char ** start, off_t off,
int count, int *eof, void *data);
static ssize_t ppc_rtas_clock_read(struct file * file, char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_clock_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_progress_read(struct file * file, char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_progress_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_poweron_read(struct file * file, char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_poweron_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_tone_freq_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_tone_freq_read(struct file * file, char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_tone_volume_write(struct file * file, const char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_tone_volume_read(struct file * file, char * buf,
size_t count, loff_t *ppos);
static ssize_t ppc_rtas_rmo_buf_read(struct file *file, char *buf,
size_t count, loff_t *ppos);
static int ppc_rtas_sensors_show(struct seq_file *m, void *v);
static int ppc_rtas_clock_show(struct seq_file *m, void *v);
static ssize_t ppc_rtas_clock_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos);
static int ppc_rtas_progress_show(struct seq_file *m, void *v);
static ssize_t ppc_rtas_progress_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos);
static int ppc_rtas_poweron_show(struct seq_file *m, void *v);
static ssize_t ppc_rtas_poweron_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos);
static ssize_t ppc_rtas_tone_freq_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos);
static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v);
static ssize_t ppc_rtas_tone_volume_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos);
static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v);
static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v);
static int sensors_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_sensors_show, NULL);
}
struct file_operations ppc_rtas_sensors_operations = {
.open = sensors_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int poweron_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_poweron_show, NULL);
}
struct file_operations ppc_rtas_poweron_operations = {
.read = ppc_rtas_poweron_read,
.write = ppc_rtas_poweron_write
.open = poweron_open,
.read = seq_read,
.llseek = seq_lseek,
.write = ppc_rtas_poweron_write,
.release = single_release,
};
static int progress_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_progress_show, NULL);
}
struct file_operations ppc_rtas_progress_operations = {
.read = ppc_rtas_progress_read,
.write = ppc_rtas_progress_write
.open = progress_open,
.read = seq_read,
.llseek = seq_lseek,
.write = ppc_rtas_progress_write,
.release = single_release,
};
static int clock_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_clock_show, NULL);
}
struct file_operations ppc_rtas_clock_operations = {
.read = ppc_rtas_clock_read,
.write = ppc_rtas_clock_write
.open = clock_open,
.read = seq_read,
.llseek = seq_lseek,
.write = ppc_rtas_clock_write,
.release = single_release,
};
static int tone_freq_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_tone_freq_show, NULL);
}
struct file_operations ppc_rtas_tone_freq_operations = {
.read = ppc_rtas_tone_freq_read,
.write = ppc_rtas_tone_freq_write
.open = tone_freq_open,
.read = seq_read,
.llseek = seq_lseek,
.write = ppc_rtas_tone_freq_write,
.release = single_release,
};
static int tone_volume_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_tone_volume_show, NULL);
}
struct file_operations ppc_rtas_tone_volume_operations = {
.read = ppc_rtas_tone_volume_read,
.write = ppc_rtas_tone_volume_write
.open = tone_volume_open,
.read = seq_read,
.llseek = seq_lseek,
.write = ppc_rtas_tone_volume_write,
.release = single_release,
};
static struct file_operations ppc_rtas_rmo_buf_ops = {
.read = ppc_rtas_rmo_buf_read,
static int rmo_buf_open(struct inode *inode, struct file *file)
{
return single_open(file, ppc_rtas_rmo_buf_show, NULL);
}
struct file_operations ppc_rtas_rmo_buf_ops = {
.open = rmo_buf_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int ppc_rtas_find_all_sensors (void);
int ppc_rtas_process_sensor(struct individual_sensor s, int state,
int error, char * buf);
char * ppc_rtas_process_error(int error);
int get_location_code(struct individual_sensor s, char * buf);
int check_location_string (char *c, char * buf);
int check_location (char *c, int idx, char * buf);
static int ppc_rtas_find_all_sensors(void);
static void ppc_rtas_process_sensor(struct seq_file *m,
struct individual_sensor *s, int state, int error, char *loc);
static char *ppc_rtas_process_error(int error);
static void get_location_code(struct seq_file *m,
struct individual_sensor *s, char *loc);
static void check_location_string(struct seq_file *m, char *c);
static void check_location(struct seq_file *m, char *c);
static int __init proc_rtas_init(void)
{
......@@ -221,8 +278,9 @@ static int __init proc_rtas_init(void)
if (entry)
entry->proc_fops = &ppc_rtas_poweron_operations;
create_proc_read_entry("ppc64/rtas/sensors", S_IRUGO, NULL,
ppc_rtas_sensor_read, NULL);
entry = create_proc_entry("ppc64/rtas/sensors", S_IRUGO, NULL);
if (entry)
entry->proc_fops = &ppc_rtas_sensors_operations;
entry = create_proc_entry("ppc64/rtas/frequency", S_IWUSR|S_IRUGO,
NULL);
......@@ -242,28 +300,38 @@ static int __init proc_rtas_init(void)
__initcall(proc_rtas_init);
static int parse_number(const char __user *p, size_t count, unsigned long *val)
{
char buf[40];
char *end;
if (count > 39)
return -EINVAL;
if (copy_from_user(buf, p, count))
return -EFAULT;
buf[count] = 0;
*val = simple_strtoul(buf, &end, 10);
if (*end && *end != '\n')
return -EINVAL;
return 0;
}
/* ****************************************************************** */
/* POWER-ON-TIME */
/* ****************************************************************** */
static ssize_t ppc_rtas_poweron_write(struct file * file, const char * buf,
size_t count, loff_t *ppos)
static ssize_t ppc_rtas_poweron_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
char stkbuf[40]; /* its small, its on stack */
struct rtc_time tm;
unsigned long nowtime;
char *dest;
int error;
int error = parse_number(buf, count, &nowtime);
if (error)
return error;
if (39 < count) count = 39;
if (copy_from_user (stkbuf, buf, count)) {
return -EFAULT;
}
stkbuf[count] = 0;
nowtime = simple_strtoul(stkbuf, &dest, 10);
if (*dest != '\0' && *dest != '\n') {
printk("ppc_rtas_poweron_write: Invalid time\n");
return count;
}
power_on_time = nowtime; /* save the time */
to_tm(nowtime, &tm);
......@@ -271,46 +339,32 @@ static ssize_t ppc_rtas_poweron_write(struct file * file, const char * buf,
error = rtas_call(rtas_token("set-time-for-power-on"), 7, 1, NULL,
tm.tm_year, tm.tm_mon, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec, 0 /* nano */);
if (error != 0)
if (error)
printk(KERN_WARNING "error: setting poweron time returned: %s\n",
ppc_rtas_process_error(error));
return count;
}
/* ****************************************************************** */
static ssize_t ppc_rtas_poweron_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
static int ppc_rtas_poweron_show(struct seq_file *m, void *v)
{
char stkbuf[40]; /* its small, its on stack */
int n, sn;
if (power_on_time == 0)
n = scnprintf(stkbuf,sizeof(stkbuf),"Power on time not set\n");
seq_printf(m, "Power on time not set\n");
else
n = scnprintf(stkbuf,sizeof(stkbuf),"%lu\n",power_on_time);
sn = strlen (stkbuf) +1;
if (*ppos >= sn)
return 0;
if (n > sn - *ppos)
n = sn - *ppos;
if (n > count)
n = count;
if (copy_to_user (buf, stkbuf + (*ppos), n)) {
return -EFAULT;
}
*ppos += n;
return n;
seq_printf(m, "%lu\n",power_on_time);
return 0;
}
/* ****************************************************************** */
/* PROGRESS */
/* ****************************************************************** */
static ssize_t ppc_rtas_progress_write(struct file * file, const char * buf,
size_t count, loff_t *ppos)
static ssize_t ppc_rtas_progress_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
unsigned long hex;
if (count >= MAX_LINELENGTH) count = MAX_LINELENGTH -1;
if (copy_from_user (progress_led, buf, count)) { /* save the string */
if (count >= MAX_LINELENGTH)
count = MAX_LINELENGTH -1;
if (copy_from_user(progress_led, buf, count)) { /* save the string */
return -EFAULT;
}
progress_led[count] = 0;
......@@ -321,180 +375,106 @@ static ssize_t ppc_rtas_progress_write(struct file * file, const char * buf,
ppc_md.progress ((char *)progress_led, hex);
return count;
/* clear the line */ /* ppc_md.progress(" ", 0xffff);*/
/* clear the line */
/* ppc_md.progress(" ", 0xffff);*/
}
/* ****************************************************************** */
static ssize_t ppc_rtas_progress_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
static int ppc_rtas_progress_show(struct seq_file *m, void *v)
{
int sn, n = 0;
char *tmpbuf;
if (progress_led == NULL) return 0;
tmpbuf = kmalloc (MAX_LINELENGTH, GFP_KERNEL);
if (!tmpbuf) {
printk(KERN_ERR "error: kmalloc failed\n");
return -ENOMEM;
}
n = sprintf (tmpbuf, "%s\n", progress_led);
sn = strlen (tmpbuf) +1;
if (*ppos >= sn) {
kfree (tmpbuf);
return 0;
}
if (n > sn - *ppos)
n = sn - *ppos;
if (n > count)
n = count;
if (copy_to_user (buf, tmpbuf + (*ppos), n)) {
kfree (tmpbuf);
return -EFAULT;
}
kfree (tmpbuf);
*ppos += n;
return n;
if (progress_led)
seq_printf(m, "%s\n", progress_led);
return 0;
}
/* ****************************************************************** */
/* CLOCK */
/* ****************************************************************** */
static ssize_t ppc_rtas_clock_write(struct file * file, const char * buf,
size_t count, loff_t *ppos)
static ssize_t ppc_rtas_clock_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
char stkbuf[40]; /* its small, its on stack */
struct rtc_time tm;
unsigned long nowtime;
char *dest;
int error;
if (39 < count) count = 39;
if (copy_from_user (stkbuf, buf, count)) {
return -EFAULT;
}
stkbuf[count] = 0;
nowtime = simple_strtoul(stkbuf, &dest, 10);
if (*dest != '\0' && *dest != '\n') {
printk("ppc_rtas_clock_write: Invalid time\n");
return count;
}
int error = parse_number(buf, count, &nowtime);
if (error)
return error;
to_tm(nowtime, &tm);
error = rtas_call(rtas_token("set-time-of-day"), 7, 1, NULL,
tm.tm_year, tm.tm_mon, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec, 0);
if (error != 0)
if (error)
printk(KERN_WARNING "error: setting the clock returned: %s\n",
ppc_rtas_process_error(error));
return count;
}
/* ****************************************************************** */
static ssize_t ppc_rtas_clock_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
static int ppc_rtas_clock_show(struct seq_file *m, void *v)
{
unsigned int year, mon, day, hour, min, sec;
int ret[8];
int n, sn, error;
char stkbuf[40]; /* its small, its on stack */
int error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret);
error = rtas_call(rtas_token("get-time-of-day"), 0, 8, ret);
year = ret[0]; mon = ret[1]; day = ret[2];
hour = ret[3]; min = ret[4]; sec = ret[5];
if (error != 0){
if (error) {
printk(KERN_WARNING "error: reading the clock returned: %s\n",
ppc_rtas_process_error(error));
n = scnprintf (stkbuf, sizeof(stkbuf), "0");
seq_printf(m, "0");
} else {
n = scnprintf (stkbuf, sizeof(stkbuf), "%lu\n",
unsigned int year, mon, day, hour, min, sec;
year = ret[0]; mon = ret[1]; day = ret[2];
hour = ret[3]; min = ret[4]; sec = ret[5];
seq_printf(m, "%lu\n",
mktime(year, mon, day, hour, min, sec));
}
sn = strlen (stkbuf) +1;
if (*ppos >= sn)
return 0;
if (n > sn - *ppos)
n = sn - *ppos;
if (n > count)
n = count;
if (copy_to_user (buf, stkbuf + (*ppos), n)) {
return -EFAULT;
}
*ppos += n;
return n;
return 0;
}
/* ****************************************************************** */
/* SENSOR STUFF */
/* ****************************************************************** */
static int ppc_rtas_sensor_read(char * buf, char ** start, off_t off,
int count, int *eof, void *data)
static int ppc_rtas_sensors_show(struct seq_file *m, void *v)
{
int i,j,n;
int i,j;
int state, error;
char *buffer;
int get_sensor_state = rtas_token("get-sensor-state");
if (count < 0)
return -EINVAL;
/* May not be enough */
buffer = kmalloc(MAX_LINELENGTH*MAX_SENSORS, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
memset(buffer, 0, MAX_LINELENGTH*MAX_SENSORS);
n = sprintf ( buffer , "RTAS (RunTime Abstraction Services) Sensor Information\n");
n += sprintf ( buffer+n, "Sensor\t\tValue\t\tCondition\tLocation\n");
n += sprintf ( buffer+n, "********************************************************\n");
seq_printf(m, "RTAS (RunTime Abstraction Services) Sensor Information\n");
seq_printf(m, "Sensor\t\tValue\t\tCondition\tLocation\n");
seq_printf(m, "********************************************************\n");
if (ppc_rtas_find_all_sensors() != 0) {
n += sprintf ( buffer+n, "\nNo sensors are available\n");
goto return_string;
seq_printf(m, "\nNo sensors are available\n");
return 0;
}
for (i=0; i<sensors.quant; i++) {
j = sensors.sensor[i].quant;
/* A sensor may have multiple instances */
while (j >= 0) {
struct individual_sensor *p = &sensors.sensor[i];
char rstr[64];
char *loc;
int llen, offs;
sprintf (rstr, SENSOR_PREFIX"%04d", p->token);
loc = (char *) get_property(rtas_node, rstr, &llen);
/* A sensor may have multiple instances */
for (j = 0, offs = 0; j <= p->quant; j++) {
error = rtas_call(get_sensor_state, 2, 2, &state,
sensors.sensor[i].token,
sensors.sensor[i].quant - j);
n += ppc_rtas_process_sensor(sensors.sensor[i], state,
error, buffer+n );
n += sprintf (buffer+n, "\n");
j--;
} /* while */
} /* for */
return_string:
if (off >= strlen(buffer)) {
*eof = 1;
kfree(buffer);
return 0;
p->token, j);
ppc_rtas_process_sensor(m, p, state, error, loc);
seq_putc(m, '\n');
if (loc) {
offs += strlen(loc) + 1;
loc += strlen(loc) + 1;
if (offs >= llen)
loc = NULL;
}
}
}
if (n > strlen(buffer) - off)
n = strlen(buffer) - off;
if (n > count)
n = count;
else
*eof = 1;
memcpy(buf, buffer + off, n);
*start = buf;
kfree(buffer);
return n;
return 0;
}
/* ****************************************************************** */
int ppc_rtas_find_all_sensors (void)
static int ppc_rtas_find_all_sensors(void)
{
unsigned int *utmp;
int len, i;
......@@ -518,7 +498,7 @@ int ppc_rtas_find_all_sensors (void)
/*
* Builds a string of what rtas returned
*/
char * ppc_rtas_process_error(int error)
static char *ppc_rtas_process_error(int error)
{
switch (error) {
case SENSOR_CRITICAL_HIGH:
......@@ -551,8 +531,8 @@ char * ppc_rtas_process_error(int error)
* Builds a string out of what the sensor said
*/
int ppc_rtas_process_sensor(struct individual_sensor s, int state,
int error, char * buf)
static void ppc_rtas_process_sensor(struct seq_file *m,
struct individual_sensor *s, int state, int error, char *loc)
{
/* Defined return vales */
const char * key_switch[] = { "Off\t", "Normal\t", "Secure\t",
......@@ -578,174 +558,170 @@ int ppc_rtas_process_sensor(struct individual_sensor s, int state,
int num_states = 0;
int temperature = 0;
int unknown = 0;
int n = 0;
/* What kind of sensor do we have here? */
switch (s.token) {
switch (s->token) {
case KEY_SWITCH:
n += sprintf(buf+n, "Key switch:\t");
seq_printf(m, "Key switch:\t");
num_states = sizeof(key_switch) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t", key_switch[state]);
seq_printf(m, "%s\t", key_switch[state]);
have_strings = 1;
}
break;
case ENCLOSURE_SWITCH:
n += sprintf(buf+n, "Enclosure switch:\t");
seq_printf(m, "Enclosure switch:\t");
num_states = sizeof(enclosure_switch) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
enclosure_switch[state]);
have_strings = 1;
}
break;
case THERMAL_SENSOR:
n += sprintf(buf+n, "Temp. (C/F):\t");
seq_printf(m, "Temp. (C/F):\t");
temperature = 1;
break;
case LID_STATUS:
n += sprintf(buf+n, "Lid status:\t");
seq_printf(m, "Lid status:\t");
num_states = sizeof(lid_status) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t", lid_status[state]);
seq_printf(m, "%s\t", lid_status[state]);
have_strings = 1;
}
break;
case POWER_SOURCE:
n += sprintf(buf+n, "Power source:\t");
seq_printf(m, "Power source:\t");
num_states = sizeof(power_source) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
power_source[state]);
have_strings = 1;
}
break;
case BATTERY_VOLTAGE:
n += sprintf(buf+n, "Battery voltage:\t");
seq_printf(m, "Battery voltage:\t");
break;
case BATTERY_REMAINING:
n += sprintf(buf+n, "Battery remaining:\t");
seq_printf(m, "Battery remaining:\t");
num_states = sizeof(battery_remaining) / sizeof(char *);
if (state < num_states)
{
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
battery_remaining[state]);
have_strings = 1;
}
break;
case BATTERY_PERCENTAGE:
n += sprintf(buf+n, "Battery percentage:\t");
seq_printf(m, "Battery percentage:\t");
break;
case EPOW_SENSOR:
n += sprintf(buf+n, "EPOW Sensor:\t");
seq_printf(m, "EPOW Sensor:\t");
num_states = sizeof(epow_sensor) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t", epow_sensor[state]);
seq_printf(m, "%s\t", epow_sensor[state]);
have_strings = 1;
}
break;
case BATTERY_CYCLESTATE:
n += sprintf(buf+n, "Battery cyclestate:\t");
seq_printf(m, "Battery cyclestate:\t");
num_states = sizeof(battery_cyclestate) /
sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
battery_cyclestate[state]);
have_strings = 1;
}
break;
case BATTERY_CHARGING:
n += sprintf(buf+n, "Battery Charging:\t");
seq_printf(m, "Battery Charging:\t");
num_states = sizeof(battery_charging) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
battery_charging[state]);
have_strings = 1;
}
break;
case IBM_SURVEILLANCE:
n += sprintf(buf+n, "Surveillance:\t");
seq_printf(m, "Surveillance:\t");
break;
case IBM_FANRPM:
n += sprintf(buf+n, "Fan (rpm):\t");
seq_printf(m, "Fan (rpm):\t");
break;
case IBM_VOLTAGE:
n += sprintf(buf+n, "Voltage (mv):\t");
seq_printf(m, "Voltage (mv):\t");
break;
case IBM_DRCONNECTOR:
n += sprintf(buf+n, "DR connector:\t");
seq_printf(m, "DR connector:\t");
num_states = sizeof(ibm_drconnector) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
ibm_drconnector[state]);
have_strings = 1;
}
break;
case IBM_POWERSUPPLY:
n += sprintf(buf+n, "Powersupply:\t");
seq_printf(m, "Powersupply:\t");
break;
case IBM_INTQUEUE:
n += sprintf(buf+n, "Interrupt queue:\t");
seq_printf(m, "Interrupt queue:\t");
num_states = sizeof(ibm_intqueue) / sizeof(char *);
if (state < num_states) {
n += sprintf(buf+n, "%s\t",
seq_printf(m, "%s\t",
ibm_intqueue[state]);
have_strings = 1;
}
break;
default:
n += sprintf(buf+n, "Unknown sensor (type %d), ignoring it\n",
s.token);
seq_printf(m, "Unknown sensor (type %d), ignoring it\n",
s->token);
unknown = 1;
have_strings = 1;
break;
}
if (have_strings == 0) {
if (temperature) {
n += sprintf(buf+n, "%4d /%4d\t", state, cel_to_fahr(state));
seq_printf(m, "%4d /%4d\t", state, cel_to_fahr(state));
} else
n += sprintf(buf+n, "%10d\t", state);
seq_printf(m, "%10d\t", state);
}
if (unknown == 0) {
n += sprintf ( buf+n, "%s\t", ppc_rtas_process_error(error));
n += get_location_code(s, buf+n);
seq_printf(m, "%s\t", ppc_rtas_process_error(error));
get_location_code(m, s, loc);
}
return n;
}
/* ****************************************************************** */
int check_location (char *c, int idx, char * buf)
static void check_location(struct seq_file *m, char *c)
{
int n = 0;
switch (*(c+idx)) {
switch (c[0]) {
case LOC_PLANAR:
n += sprintf ( buf, "Planar #%c", *(c+idx+1));
seq_printf(m, "Planar #%c", c[1]);
break;
case LOC_CPU:
n += sprintf ( buf, "CPU #%c", *(c+idx+1));
seq_printf(m, "CPU #%c", c[1]);
break;
case LOC_FAN:
n += sprintf ( buf, "Fan #%c", *(c+idx+1));
seq_printf(m, "Fan #%c", c[1]);
break;
case LOC_RACKMOUNTED:
n += sprintf ( buf, "Rack #%c", *(c+idx+1));
seq_printf(m, "Rack #%c", c[1]);
break;
case LOC_VOLTAGE:
n += sprintf ( buf, "Voltage #%c", *(c+idx+1));
seq_printf(m, "Voltage #%c", c[1]);
break;
case LOC_LCD:
n += sprintf ( buf, "LCD #%c", *(c+idx+1));
seq_printf(m, "LCD #%c", c[1]);
break;
case '.':
n += sprintf ( buf, "- %c", *(c+idx+1));
seq_printf(m, "- %c", c[1]);
break;
default:
n += sprintf ( buf, "Unknown location");
seq_printf(m, "Unknown location");
break;
}
return n;
}
......@@ -755,199 +731,88 @@ int check_location (char *c, int idx, char * buf)
* ${LETTER}${NUMBER}[[-/]${LETTER}${NUMBER} [ ... ] ]
* the '.' may be an abbrevation
*/
int check_location_string (char *c, char *buf)
static void check_location_string(struct seq_file *m, char *c)
{
int n=0,i=0;
while (c[i]) {
if (isalpha(c[i]) || c[i] == '.') {
n += check_location(c, i, buf+n);
}
else if (c[i] == '/' || c[i] == '-')
n += sprintf(buf+n, " at ");
i++;
while (*c) {
if (isalpha(*c) || *c == '.')
check_location(m, c);
else if (*c == '/' || *c == '-')
seq_printf(m, " at ");
c++;
}
return n;
}
/* ****************************************************************** */
int get_location_code(struct individual_sensor s, char * buffer)
static void get_location_code(struct seq_file *m, struct individual_sensor *s, char *loc)
{
char rstr[512], tmp[10], tmp2[10];
int n=0, i=0, llen, len;
/* char *buf = kmalloc(MAX_LINELENGTH, GFP_KERNEL); */
char *ret;
static int pos = 0; /* remember position where buffer was */
/* construct the sensor number like 0003 */
/* fill with zeros */
n = sprintf(tmp, "%d", s.token);
len = strlen(tmp);
while (strlen(tmp) < 4)
n += sprintf (tmp+n, "0");
/* invert the string */
while (tmp[i]) {
if (i<len)
tmp2[4-len+i] = tmp[i];
else
tmp2[3-i] = tmp[i];
i++;
}
tmp2[4] = '\0';
sprintf (rstr, SENSOR_PREFIX"%s", tmp2);
ret = (char *) get_property(rtas_node, rstr, &llen);
n=0;
if (ret == NULL || ret[0] == '\0') {
n += sprintf ( buffer+n, "--- ");/* does not have a location */
if (!loc || !*loc) {
seq_printf(m, "---");/* does not have a location */
} else {
char t[50];
ret += pos;
n += check_location_string(ret, buffer + n);
n += sprintf ( buffer+n, " ");
/* see how many characters we have printed */
scnprintf(t, sizeof(t), "%s ", ret);
pos += strlen(t);
if (pos >= llen) pos=0;
check_location_string(m, loc);
}
return n;
seq_putc(m, ' ');
}
/* ****************************************************************** */
/* INDICATORS - Tone Frequency */
/* ****************************************************************** */
static ssize_t ppc_rtas_tone_freq_write(struct file * file, const char * buf,
size_t count, loff_t *ppos)
static ssize_t ppc_rtas_tone_freq_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
char stkbuf[40]; /* its small, its on stack */
unsigned long freq;
char *dest;
int error;
int error = parse_number(buf, count, &freq);
if (error)
return error;
if (39 < count) count = 39;
if (copy_from_user (stkbuf, buf, count)) {
return -EFAULT;
}
stkbuf[count] = 0;
freq = simple_strtoul(stkbuf, &dest, 10);
if (*dest != '\0' && *dest != '\n') {
printk("ppc_rtas_tone_freq_write: Invalid tone freqency\n");
return count;
}
if (freq < 0) freq = 0;
rtas_tone_frequency = freq; /* save it for later */
error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
TONE_FREQUENCY, 0, freq);
if (error != 0)
if (error)
printk(KERN_WARNING "error: setting tone frequency returned: %s\n",
ppc_rtas_process_error(error));
return count;
}
/* ****************************************************************** */
static ssize_t ppc_rtas_tone_freq_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
static int ppc_rtas_tone_freq_show(struct seq_file *m, void *v)
{
int n, sn;
char stkbuf[40]; /* its small, its on stack */
n = scnprintf(stkbuf, 40, "%lu\n", rtas_tone_frequency);
sn = strlen (stkbuf) +1;
if (*ppos >= sn)
return 0;
if (n > sn - *ppos)
n = sn - *ppos;
if (n > count)
n = count;
if (copy_to_user (buf, stkbuf + (*ppos), n)) {
return -EFAULT;
}
*ppos += n;
return n;
seq_printf(m, "%lu\n", rtas_tone_frequency);
return 0;
}
/* ****************************************************************** */
/* INDICATORS - Tone Volume */
/* ****************************************************************** */
static ssize_t ppc_rtas_tone_volume_write(struct file * file, const char * buf,
size_t count, loff_t *ppos)
static ssize_t ppc_rtas_tone_volume_write(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
char stkbuf[40]; /* its small, its on stack */
unsigned long volume;
char *dest;
int error;
int error = parse_number(buf, count, &volume);
if (error)
return error;
if (39 < count) count = 39;
if (copy_from_user (stkbuf, buf, count)) {
return -EFAULT;
}
stkbuf[count] = 0;
volume = simple_strtoul(stkbuf, &dest, 10);
if (*dest != '\0' && *dest != '\n') {
printk("ppc_rtas_tone_volume_write: Invalid tone volume\n");
return count;
}
if (volume < 0) volume = 0;
if (volume > 100) volume = 100;
if (volume > 100)
volume = 100;
rtas_tone_volume = volume; /* save it for later */
error = rtas_call(rtas_token("set-indicator"), 3, 1, NULL,
TONE_VOLUME, 0, volume);
if (error != 0)
if (error)
printk(KERN_WARNING "error: setting tone volume returned: %s\n",
ppc_rtas_process_error(error));
return count;
}
/* ****************************************************************** */
static ssize_t ppc_rtas_tone_volume_read(struct file * file, char * buf,
size_t count, loff_t *ppos)
static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v)
{
int n, sn;
char stkbuf[40]; /* its small, its on stack */
n = scnprintf(stkbuf, 40, "%lu\n", rtas_tone_volume);
sn = strlen (stkbuf) +1;
if (*ppos >= sn)
return 0;
if (n > sn - *ppos)
n = sn - *ppos;
if (n > count)
n = count;
if (copy_to_user (buf, stkbuf + (*ppos), n)) {
return -EFAULT;
}
*ppos += n;
return n;
seq_printf(m, "%lu\n", rtas_tone_volume);
return 0;
}
#define RMO_READ_BUF_MAX 30
/* RTAS Userspace access */
static ssize_t ppc_rtas_rmo_buf_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v)
{
char kbuf[RMO_READ_BUF_MAX];
int n;
n = sprintf(kbuf, "%016lx %x\n", rtas_rmo_buf, RTAS_RMOBUF_MAX);
if (n > count)
n = count;
if (ppos && *ppos != 0)
return 0;
if (copy_to_user(buf, kbuf, n))
return -EFAULT;
if (ppos)
*ppos = n;
return n;
seq_printf(m, "%016lx %x\n", rtas_rmo_buf, RTAS_RMOBUF_MAX);
return 0;
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7