linux/drivers/net/wireless/hostap/hostap_proc.c
Al Viro bc3041f055 wireless: single_open() leaks
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-05 00:13:20 -04:00

505 lines
14 KiB
C

/* /proc routines for Host AP driver */
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/export.h>
#include <net/lib80211.h>
#include "hostap_wlan.h"
#include "hostap.h"
#define PROC_LIMIT (PAGE_SIZE - 80)
#ifndef PRISM2_NO_PROCFS_DEBUG
static int prism2_debug_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
int i;
seq_printf(m, "next_txfid=%d next_alloc=%d\n",
local->next_txfid, local->next_alloc);
for (i = 0; i < PRISM2_TXFID_COUNT; i++)
seq_printf(m, "FID: tx=%04X intransmit=%04X\n",
local->txfid[i], local->intransmitfid[i]);
seq_printf(m, "FW TX rate control: %d\n", local->fw_tx_rate_control);
seq_printf(m, "beacon_int=%d\n", local->beacon_int);
seq_printf(m, "dtim_period=%d\n", local->dtim_period);
seq_printf(m, "wds_max_connections=%d\n", local->wds_max_connections);
seq_printf(m, "dev_enabled=%d\n", local->dev_enabled);
seq_printf(m, "sw_tick_stuck=%d\n", local->sw_tick_stuck);
for (i = 0; i < WEP_KEYS; i++) {
if (local->crypt_info.crypt[i] &&
local->crypt_info.crypt[i]->ops) {
seq_printf(m, "crypt[%d]=%s\n", i,
local->crypt_info.crypt[i]->ops->name);
}
}
seq_printf(m, "pri_only=%d\n", local->pri_only);
seq_printf(m, "pci=%d\n", local->func->hw_type == HOSTAP_HW_PCI);
seq_printf(m, "sram_type=%d\n", local->sram_type);
seq_printf(m, "no_pri=%d\n", local->no_pri);
return 0;
}
static int prism2_debug_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, prism2_debug_proc_show, PDE_DATA(inode));
}
static const struct file_operations prism2_debug_proc_fops = {
.open = prism2_debug_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
#endif /* PRISM2_NO_PROCFS_DEBUG */
static int prism2_stats_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
struct comm_tallies_sums *sums = &local->comm_tallies;
seq_printf(m, "TxUnicastFrames=%u\n", sums->tx_unicast_frames);
seq_printf(m, "TxMulticastframes=%u\n", sums->tx_multicast_frames);
seq_printf(m, "TxFragments=%u\n", sums->tx_fragments);
seq_printf(m, "TxUnicastOctets=%u\n", sums->tx_unicast_octets);
seq_printf(m, "TxMulticastOctets=%u\n", sums->tx_multicast_octets);
seq_printf(m, "TxDeferredTransmissions=%u\n",
sums->tx_deferred_transmissions);
seq_printf(m, "TxSingleRetryFrames=%u\n", sums->tx_single_retry_frames);
seq_printf(m, "TxMultipleRetryFrames=%u\n",
sums->tx_multiple_retry_frames);
seq_printf(m, "TxRetryLimitExceeded=%u\n",
sums->tx_retry_limit_exceeded);
seq_printf(m, "TxDiscards=%u\n", sums->tx_discards);
seq_printf(m, "RxUnicastFrames=%u\n", sums->rx_unicast_frames);
seq_printf(m, "RxMulticastFrames=%u\n", sums->rx_multicast_frames);
seq_printf(m, "RxFragments=%u\n", sums->rx_fragments);
seq_printf(m, "RxUnicastOctets=%u\n", sums->rx_unicast_octets);
seq_printf(m, "RxMulticastOctets=%u\n", sums->rx_multicast_octets);
seq_printf(m, "RxFCSErrors=%u\n", sums->rx_fcs_errors);
seq_printf(m, "RxDiscardsNoBuffer=%u\n", sums->rx_discards_no_buffer);
seq_printf(m, "TxDiscardsWrongSA=%u\n", sums->tx_discards_wrong_sa);
seq_printf(m, "RxDiscardsWEPUndecryptable=%u\n",
sums->rx_discards_wep_undecryptable);
seq_printf(m, "RxMessageInMsgFragments=%u\n",
sums->rx_message_in_msg_fragments);
seq_printf(m, "RxMessageInBadMsgFragments=%u\n",
sums->rx_message_in_bad_msg_fragments);
/* FIX: this may grow too long for one page(?) */
return 0;
}
static int prism2_stats_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, prism2_stats_proc_show, PDE_DATA(inode));
}
static const struct file_operations prism2_stats_proc_fops = {
.open = prism2_stats_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int prism2_wds_proc_show(struct seq_file *m, void *v)
{
struct list_head *ptr = v;
struct hostap_interface *iface;
iface = list_entry(ptr, struct hostap_interface, list);
if (iface->type == HOSTAP_INTERFACE_WDS)
seq_printf(m, "%s\t%pM\n",
iface->dev->name, iface->u.wds.remote_addr);
return 0;
}
static void *prism2_wds_proc_start(struct seq_file *m, loff_t *_pos)
{
local_info_t *local = m->private;
read_lock_bh(&local->iface_lock);
return seq_list_start(&local->hostap_interfaces, *_pos);
}
static void *prism2_wds_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = m->private;
return seq_list_next(v, &local->hostap_interfaces, _pos);
}
static void prism2_wds_proc_stop(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
read_unlock_bh(&local->iface_lock);
}
static const struct seq_operations prism2_wds_proc_seqops = {
.start = prism2_wds_proc_start,
.next = prism2_wds_proc_next,
.stop = prism2_wds_proc_stop,
.show = prism2_wds_proc_show,
};
static int prism2_wds_proc_open(struct inode *inode, struct file *file)
{
int ret = seq_open(file, &prism2_wds_proc_seqops);
if (ret == 0) {
struct seq_file *m = file->private_data;
m->private = PDE_DATA(inode);
}
return ret;
}
static const struct file_operations prism2_wds_proc_fops = {
.open = prism2_wds_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
struct list_head *ptr = v;
struct hostap_bss_info *bss;
int i;
if (ptr == &local->bss_list) {
seq_printf(m, "#BSSID\tlast_update\tcount\tcapab_info\tSSID(txt)\t"
"SSID(hex)\tWPA IE\n");
return 0;
}
bss = list_entry(ptr, struct hostap_bss_info, list);
seq_printf(m, "%pM\t%lu\t%u\t0x%x\t",
bss->bssid, bss->last_update,
bss->count, bss->capab_info);
for (i = 0; i < bss->ssid_len; i++)
seq_putc(m,bss->ssid[i] >= 32 && bss->ssid[i] < 127 ?
bss->ssid[i] : '_');
seq_putc(m, '\t');
for (i = 0; i < bss->ssid_len; i++)
seq_printf(m, "%02x", bss->ssid[i]);
seq_putc(m, '\t');
for (i = 0; i < bss->wpa_ie_len; i++)
seq_printf(m, "%02x", bss->wpa_ie[i]);
seq_putc(m, '\n');
return 0;
}
static void *prism2_bss_list_proc_start(struct seq_file *m, loff_t *_pos)
{
local_info_t *local = m->private;
spin_lock_bh(&local->lock);
return seq_list_start_head(&local->bss_list, *_pos);
}
static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = m->private;
return seq_list_next(v, &local->bss_list, _pos);
}
static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
spin_unlock_bh(&local->lock);
}
static const struct seq_operations prism2_bss_list_proc_seqops = {
.start = prism2_bss_list_proc_start,
.next = prism2_bss_list_proc_next,
.stop = prism2_bss_list_proc_stop,
.show = prism2_bss_list_proc_show,
};
static int prism2_bss_list_proc_open(struct inode *inode, struct file *file)
{
int ret = seq_open(file, &prism2_bss_list_proc_seqops);
if (ret == 0) {
struct seq_file *m = file->private_data;
m->private = PDE_DATA(inode);
}
return ret;
}
static const struct file_operations prism2_bss_list_proc_fops = {
.open = prism2_bss_list_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int prism2_crypt_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
int i;
seq_printf(m, "tx_keyidx=%d\n", local->crypt_info.tx_keyidx);
for (i = 0; i < WEP_KEYS; i++) {
if (local->crypt_info.crypt[i] &&
local->crypt_info.crypt[i]->ops &&
local->crypt_info.crypt[i]->ops->print_stats) {
local->crypt_info.crypt[i]->ops->print_stats(
m, local->crypt_info.crypt[i]->priv);
}
}
return 0;
}
static int prism2_crypt_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, prism2_crypt_proc_show, PDE_DATA(inode));
}
static const struct file_operations prism2_crypt_proc_fops = {
.open = prism2_crypt_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
size_t count, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(file));
size_t off;
if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
return 0;
off = *_pos;
if (count > PRISM2_PDA_SIZE - off)
count = PRISM2_PDA_SIZE - off;
if (copy_to_user(buf, local->pda + off, count) != 0)
return -EFAULT;
*_pos += count;
return count;
}
static const struct file_operations prism2_pda_proc_fops = {
.read = prism2_pda_proc_read,
.llseek = generic_file_llseek,
};
static ssize_t prism2_aux_dump_proc_no_read(struct file *file, char __user *buf,
size_t bufsize, loff_t *_pos)
{
return 0;
}
static const struct file_operations prism2_aux_dump_proc_fops = {
.read = prism2_aux_dump_proc_no_read,
};
#ifdef PRISM2_IO_DEBUG
static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
local_info_t *local = (local_info_t *) data;
int head = local->io_debug_head;
int start_bytes, left, copy, copied;
if (off + count > PRISM2_IO_DEBUG_SIZE * 4) {
*eof = 1;
if (off >= PRISM2_IO_DEBUG_SIZE * 4)
return 0;
count = PRISM2_IO_DEBUG_SIZE * 4 - off;
}
copied = 0;
start_bytes = (PRISM2_IO_DEBUG_SIZE - head) * 4;
left = count;
if (off < start_bytes) {
copy = start_bytes - off;
if (copy > count)
copy = count;
memcpy(page, ((u8 *) &local->io_debug[head]) + off, copy);
left -= copy;
if (left > 0)
memcpy(&page[copy], local->io_debug, left);
} else {
memcpy(page, ((u8 *) local->io_debug) + (off - start_bytes),
left);
}
*start = page;
return count;
}
#endif /* PRISM2_IO_DEBUG */
#ifndef PRISM2_NO_STATION_MODES
static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
unsigned long entry;
int i, len;
struct hfa384x_hostscan_result *scanres;
u8 *p;
if (v == SEQ_START_TOKEN) {
seq_printf(m,
"CHID ANL SL BcnInt Capab Rate BSSID ATIM SupRates SSID\n");
return 0;
}
entry = (unsigned long)v - 2;
scanres = &local->last_scan_results[entry];
seq_printf(m, "%d %d %d %d 0x%02x %d %pM %d ",
le16_to_cpu(scanres->chid),
(s16) le16_to_cpu(scanres->anl),
(s16) le16_to_cpu(scanres->sl),
le16_to_cpu(scanres->beacon_interval),
le16_to_cpu(scanres->capability),
le16_to_cpu(scanres->rate),
scanres->bssid,
le16_to_cpu(scanres->atim));
p = scanres->sup_rates;
for (i = 0; i < sizeof(scanres->sup_rates); i++) {
if (p[i] == 0)
break;
seq_printf(m, "<%02x>", p[i]);
}
seq_putc(m, ' ');
p = scanres->ssid;
len = le16_to_cpu(scanres->ssid_len);
if (len > 32)
len = 32;
for (i = 0; i < len; i++) {
unsigned char c = p[i];
if (c >= 32 && c < 127)
seq_putc(m, c);
else
seq_printf(m, "<%02x>", c);
}
seq_putc(m, '\n');
return 0;
}
static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
{
local_info_t *local = m->private;
spin_lock_bh(&local->lock);
/* We have a header (pos 0) + N results to show (pos 1...N) */
if (*_pos > local->last_scan_results_count)
return NULL;
return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
}
static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = m->private;
++*_pos;
if (*_pos > local->last_scan_results_count)
return NULL;
return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
}
static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
{
local_info_t *local = m->private;
spin_unlock_bh(&local->lock);
}
static const struct seq_operations prism2_scan_results_proc_seqops = {
.start = prism2_scan_results_proc_start,
.next = prism2_scan_results_proc_next,
.stop = prism2_scan_results_proc_stop,
.show = prism2_scan_results_proc_show,
};
static int prism2_scan_results_proc_open(struct inode *inode, struct file *file)
{
int ret = seq_open(file, &prism2_scan_results_proc_seqops);
if (ret == 0) {
struct seq_file *m = file->private_data;
m->private = PDE_DATA(inode);
}
return ret;
}
static const struct file_operations prism2_scan_results_proc_fops = {
.open = prism2_scan_results_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
#endif /* PRISM2_NO_STATION_MODES */
void hostap_init_proc(local_info_t *local)
{
local->proc = NULL;
if (hostap_proc == NULL) {
printk(KERN_WARNING "%s: hostap proc directory not created\n",
local->dev->name);
return;
}
local->proc = proc_mkdir(local->ddev->name, hostap_proc);
if (local->proc == NULL) {
printk(KERN_INFO "/proc/net/hostap/%s creation failed\n",
local->ddev->name);
return;
}
#ifndef PRISM2_NO_PROCFS_DEBUG
proc_create_data("debug", 0, local->proc,
&prism2_debug_proc_fops, local);
#endif /* PRISM2_NO_PROCFS_DEBUG */
proc_create_data("stats", 0, local->proc,
&prism2_stats_proc_fops, local);
proc_create_data("wds", 0, local->proc,
&prism2_wds_proc_fops, local);
proc_create_data("pda", 0, local->proc,
&prism2_pda_proc_fops, local);
proc_create_data("aux_dump", 0, local->proc,
local->func->read_aux_fops ?: &prism2_aux_dump_proc_fops,
local);
proc_create_data("bss_list", 0, local->proc,
&prism2_bss_list_proc_fops, local);
proc_create_data("crypt", 0, local->proc,
&prism2_crypt_proc_fops, local);
#ifdef PRISM2_IO_DEBUG
proc_create_data("io_debug", 0, local->proc,
&prism2_io_debug_proc_fops, local);
#endif /* PRISM2_IO_DEBUG */
#ifndef PRISM2_NO_STATION_MODES
proc_create_data("scan_results", 0, local->proc,
&prism2_scan_results_proc_fops, local);
#endif /* PRISM2_NO_STATION_MODES */
}
void hostap_remove_proc(local_info_t *local)
{
remove_proc_subtree(local->ddev->name, hostap_proc);
}
EXPORT_SYMBOL(hostap_init_proc);
EXPORT_SYMBOL(hostap_remove_proc);