From: Stephen Hemminger (jitdfrw.fhzjbg@haw-hamburg.de)
Date: Wed Aug 06 2003 - 00:46:22 EEST
The existing ROSE /proc interface has no module owner, and doesn't check for
bounds overflow. Easier to just convert it to the seq_file wrapper functions.
This patch is against 2.6.0-test2 (offsets assume earlier patch).
diff -Nru a/include/net/rose.h b/include/net/rose.h
--- a/include/net/rose.h Tue Aug 5 14:36:07 2003
+++ b/include/net/rose.h Tue Aug 5 14:36:07 2003
@@ -140,6 +140,9 @@
#define rose_sk(__sk) ((rose_cb *)(__sk)->sk_protinfo)
+/* Magic value indicating first entry in /proc (ie header) */
+#define ROSE_PROC_START ((void *) 1)
+
/* af_rose.c */
extern ax25_address rose_callsign;
extern int sysctl_rose_restart_request_timeout;
@@ -154,7 +157,7 @@
extern int sysctl_rose_window_size;
extern int rosecmp(rose_address *, rose_address *);
extern int rosecmpm(rose_address *, rose_address *, unsigned short);
-extern char *rose2asc(rose_address *);
+extern const char *rose2asc(const rose_address *);
extern struct sock *rose_find_socket(unsigned int, struct rose_neigh *);
extern void rose_kill_by_neigh(struct rose_neigh *);
extern unsigned int rose_new_lci(struct rose_neigh *);
@@ -193,6 +196,9 @@
/* rose_route.c */
extern struct rose_neigh *rose_loopback_neigh;
+extern struct file_operations rose_neigh_fops;
+extern struct file_operations rose_nodes_fops;
+extern struct file_operations rose_routes_fops;
extern int rose_add_loopback_neigh(void);
extern int rose_add_loopback_node(rose_address *);
@@ -207,9 +213,6 @@
extern int rose_rt_ioctl(unsigned int, void *);
extern void rose_link_failed(ax25_cb *, int);
extern int rose_route_frame(struct sk_buff *, ax25_cb *);
-extern int rose_nodes_get_info(char *, char **, off_t, int);
-extern int rose_neigh_get_info(char *, char **, off_t, int);
-extern int rose_routes_get_info(char *, char **, off_t, int);
extern void rose_rt_free(void);
/* rose_subr.c */
diff -Nru a/net/rose/af_rose.c b/net/rose/af_rose.c
--- a/net/rose/af_rose.c Tue Aug 5 14:36:07 2003
+++ b/net/rose/af_rose.c Tue Aug 5 14:36:07 2003
@@ -39,6 +39,7 @@
#include <linux/notifier.h>
#include <net/rose.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <net/tcp.h>
#include <net/ip.h>
#include <net/arp.h>
@@ -56,8 +57,8 @@
int sysctl_rose_maximum_vcs = ROSE_DEFAULT_MAXVC;
int sysctl_rose_window_size = ROSE_DEFAULT_WINDOW_SIZE;
-static HLIST_HEAD(rose_list);
-static spinlock_t rose_list_lock = SPIN_LOCK_UNLOCKED;
+HLIST_HEAD(rose_list);
+spinlock_t rose_list_lock = SPIN_LOCK_UNLOCKED;
static struct proto_ops rose_proto_ops;
@@ -66,7 +67,7 @@
/*
* Convert a ROSE address into text.
*/
-char *rose2asc(rose_address *addr)
+const char *rose2asc(const rose_address *addr)
{
static char buffer[11];
@@ -1332,29 +1333,57 @@
return 0;
}
-static int rose_get_info(char *buffer, char **start, off_t offset, int length)
+#ifdef CONFIG_PROC_FS
+static void *rose_info_start(struct seq_file *seq, loff_t *pos)
{
+ int i;
struct sock *s;
struct hlist_node *node;
- struct net_device *dev;
- const char *devname, *callsign;
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
spin_lock_bh(&rose_list_lock);
+ if (*pos == 0)
+ return ROSE_PROC_START;
+
+ i = 1;
+ sk_for_each(s, node, &rose_list) {
+ if (i == *pos)
+ return s;
+ ++i;
+ }
+ return NULL;
+}
- len += sprintf(buffer, "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
+static void *rose_info_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
- sk_for_each(s, node, &rose_list) {
+ return (v == ROSE_PROC_START) ? sk_head(&rose_list)
+ : sk_next((struct sock *)v);
+}
+
+static void rose_info_stop(struct seq_file *seq, void *v)
+{
+ spin_unlock_bh(&rose_list_lock);
+}
+
+static int rose_info_show(struct seq_file *seq, void *v)
+{
+ if (v == ROSE_PROC_START)
+ seq_puts(seq,
+ "dest_addr dest_call src_addr src_call dev lci neigh st vs vr va t t1 t2 t3 hb idle Snd-Q Rcv-Q inode\n");
+
+ else {
+ struct sock *s = v;
rose_cb *rose = rose_sk(s);
+ const char *devname, *callsign;
+ const struct net_device *dev = rose->device;
- if ((dev = rose->device) == NULL)
+ if (!dev)
devname = "???";
else
devname = dev->name;
-
- len += sprintf(buffer + len, "%-10s %-9s ",
+
+ seq_printf(seq, "%-10s %-9s ",
rose2asc(&rose->dest_addr),
ax2asc(&rose->dest_call));
@@ -1363,7 +1392,8 @@
else
callsign = ax2asc(&rose->source_call);
- len += sprintf(buffer + len, "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
+ seq_printf(seq,
+ "%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
rose2asc(&rose->source_addr),
callsign,
devname,
@@ -1383,27 +1413,32 @@
atomic_read(&s->sk_wmem_alloc),
atomic_read(&s->sk_rmem_alloc),
s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
-
- pos = begin + len;
-
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
-
- if (pos > offset + length)
- break;
}
- spin_unlock_bh(&rose_list_lock);
- *start = buffer + (offset - begin);
- len -= (offset - begin);
+ return 0;
+}
- if (len > length) len = length;
+static struct seq_operations rose_info_seqops = {
+ .start = rose_info_start,
+ .next = rose_info_next,
+ .stop = rose_info_stop,
+ .show = rose_info_show,
+};
- return len;
+static int rose_info_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rose_info_seqops);
}
+static struct file_operations rose_info_fops = {
+ .owner = THIS_MODULE,
+ .open = rose_info_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+#endif /* CONFIG_PROC_FS */
+
static struct net_proto_family rose_family_ops = {
.family = PF_ROSE,
.create = rose_create,
@@ -1499,10 +1534,11 @@
rose_add_loopback_neigh();
- proc_net_create("rose", 0, rose_get_info);
- proc_net_create("rose_neigh", 0, rose_neigh_get_info);
- proc_net_create("rose_nodes", 0, rose_nodes_get_info);
- proc_net_create("rose_routes", 0, rose_routes_get_info);
+ proc_net_fops_create("rose", S_IRUGO, &rose_info_fops);
+ proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops);
+ proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops);
+ proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops);
+
return 0;
}
module_init(rose_proto_init);
diff -Nru a/net/rose/rose_route.c b/net/rose/rose_route.c
--- a/net/rose/rose_route.c Tue Aug 5 14:36:07 2003
+++ b/net/rose/rose_route.c Tue Aug 5 14:36:07 2003
@@ -35,12 +35,13 @@
#include <linux/netfilter.h>
#include <linux/init.h>
#include <net/rose.h>
+#include <linux/seq_file.h>
static unsigned int rose_neigh_no = 1;
static struct rose_node *rose_node_list;
static spinlock_t rose_node_list_lock = SPIN_LOCK_UNLOCKED;
-static struct rose_neigh *rose_neigh_list;
+struct rose_neigh *rose_neigh_list;
static spinlock_t rose_neigh_list_lock = SPIN_LOCK_UNLOCKED;
static struct rose_route *rose_route_list;
static spinlock_t rose_route_list_lock = SPIN_LOCK_UNLOCKED;
@@ -1066,165 +1067,248 @@
return res;
}
-int rose_nodes_get_info(char *buffer, char **start, off_t offset, int length)
+#ifdef CONFIG_PROC_FS
+
+static void *rose_node_start(struct seq_file *seq, loff_t *pos)
{
struct rose_node *rose_node;
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
- int i;
+ int i = 1;
spin_lock_bh(&rose_neigh_list_lock);
+ if (*pos == 0)
+ return ROSE_PROC_START;
+
+ for (rose_node = rose_node_list; rose_node && i < *pos;
+ rose_node = rose_node->next, ++i);
+
+ return (i == *pos) ? rose_node : NULL;
+}
- len += sprintf(buffer, "address mask n neigh neigh neigh\n");
+static void *rose_node_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+
+ return (v == ROSE_PROC_START) ? rose_node_list
+ : ((struct rose_node *)v)->next;
+}
- for (rose_node = rose_node_list; rose_node != NULL; rose_node = rose_node->next) {
+static void rose_node_stop(struct seq_file *seq, void *v)
+{
+ spin_unlock_bh(&rose_neigh_list_lock);
+}
+
+static int rose_node_show(struct seq_file *seq, void *v)
+{
+ int i;
+
+ if (v == ROSE_PROC_START)
+ seq_puts(seq, "address mask n neigh neigh neigh\n");
+ else {
+ const struct rose_node *rose_node = v;
/* if (rose_node->loopback) {
- len += sprintf(buffer + len, "%-10s %04d 1 loopback\n",
+ seq_printf(seq, "%-10s %04d 1 loopback\n",
rose2asc(&rose_node->address),
rose_node->mask);
} else { */
- len += sprintf(buffer + len, "%-10s %04d %d",
+ seq_printf(seq, "%-10s %04d %d",
rose2asc(&rose_node->address),
rose_node->mask,
rose_node->count);
for (i = 0; i < rose_node->count; i++)
- len += sprintf(buffer + len, " %05d",
+ seq_printf(seq, " %05d",
rose_node->neighbour[i]->number);
- len += sprintf(buffer + len, "\n");
+ seq_puts(seq, "\n");
/* } */
+ }
+ return 0;
+}
- pos = begin + len;
+static struct seq_operations rose_node_seqops = {
+ .start = rose_node_start,
+ .next = rose_node_next,
+ .stop = rose_node_stop,
+ .show = rose_node_show,
+};
+
+static int rose_nodes_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rose_node_seqops);
+}
+
+struct file_operations rose_nodes_fops = {
+ .owner = THIS_MODULE,
+ .open = rose_nodes_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
+static void *rose_neigh_start(struct seq_file *seq, loff_t *pos)
+{
+ struct rose_neigh *rose_neigh;
+ int i = 1;
- if (pos > offset + length)
- break;
- }
- spin_unlock_bh(&rose_neigh_list_lock);
+ spin_lock_bh(&rose_neigh_list_lock);
+ if (*pos == 0)
+ return ROSE_PROC_START;
- *start = buffer + (offset - begin);
- len -= (offset - begin);
+ for (rose_neigh = rose_neigh_list; rose_neigh && i < *pos;
+ rose_neigh = rose_neigh->next, ++i);
- if (len > length)
- len = length;
+ return (i == *pos) ? rose_neigh : NULL;
+}
- return len;
+static void *rose_neigh_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+
+ return (v == ROSE_PROC_START) ? rose_neigh_list
+ : ((struct rose_neigh *)v)->next;
}
-int rose_neigh_get_info(char *buffer, char **start, off_t offset, int length)
+static void rose_neigh_stop(struct seq_file *seq, void *v)
{
- struct rose_neigh *rose_neigh;
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
- int i;
+ spin_unlock_bh(&rose_neigh_list_lock);
+}
- spin_lock_bh(&rose_neigh_list_lock);
+static int rose_neigh_show(struct seq_file *seq, void *v)
+{
+ int i;
- len += sprintf(buffer, "addr callsign dev count use mode restart t0 tf digipeaters\n");
+ if (v == ROSE_PROC_START)
+ seq_puts(seq,
+ "addr callsign dev count use mode restart t0 tf digipeaters\n");
+ else {
+ struct rose_neigh *rose_neigh = v;
- for (rose_neigh = rose_neigh_list; rose_neigh != NULL; rose_neigh = rose_neigh->next) {
/* if (!rose_neigh->loopback) { */
- len += sprintf(buffer + len, "%05d %-9s %-4s %3d %3d %3s %3s %3lu %3lu",
- rose_neigh->number,
- (rose_neigh->loopback) ? "RSLOOP-0" : ax2asc(&rose_neigh->callsign),
- rose_neigh->dev ? rose_neigh->dev->name : "???",
- rose_neigh->count,
- rose_neigh->use,
- (rose_neigh->dce_mode) ? "DCE" : "DTE",
- (rose_neigh->restarted) ? "yes" : "no",
- ax25_display_timer(&rose_neigh->t0timer) / HZ,
- ax25_display_timer(&rose_neigh->ftimer) / HZ);
-
- if (rose_neigh->digipeat != NULL) {
- for (i = 0; i < rose_neigh->digipeat->ndigi; i++)
- len += sprintf(buffer + len, " %s", ax2asc(&rose_neigh->digipeat->calls[i]));
- }
-
- len += sprintf(buffer + len, "\n");
-
- pos = begin + len;
-
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
+ seq_printf(seq, "%05d %-9s %-4s %3d %3d %3s %3s %3lu %3lu",
+ rose_neigh->number,
+ (rose_neigh->loopback) ? "RSLOOP-0" : ax2asc(&rose_neigh->callsign),
+ rose_neigh->dev ? rose_neigh->dev->name : "???",
+ rose_neigh->count,
+ rose_neigh->use,
+ (rose_neigh->dce_mode) ? "DCE" : "DTE",
+ (rose_neigh->restarted) ? "yes" : "no",
+ ax25_display_timer(&rose_neigh->t0timer) / HZ,
+ ax25_display_timer(&rose_neigh->ftimer) / HZ);
+
+ if (rose_neigh->digipeat != NULL) {
+ for (i = 0; i < rose_neigh->digipeat->ndigi; i++)
+ seq_printf(seq, " %s", ax2asc(&rose_neigh->digipeat->calls[i]));
+ }
- if (pos > offset + length)
- break;
- /* } */
+ seq_puts(seq, "\n");
}
+ return 0;
+}
- spin_unlock_bh(&rose_neigh_list_lock);
-
- *start = buffer + (offset - begin);
- len -= (offset - begin);
- if (len > length)
- len = length;
+static struct seq_operations rose_neigh_seqops = {
+ .start = rose_neigh_start,
+ .next = rose_neigh_next,
+ .stop = rose_neigh_stop,
+ .show = rose_neigh_show,
+};
- return len;
+static int rose_neigh_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rose_neigh_seqops);
}
-int rose_routes_get_info(char *buffer, char **start, off_t offset, int length)
+struct file_operations rose_neigh_fops = {
+ .owner = THIS_MODULE,
+ .open = rose_neigh_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+
+static void *rose_route_start(struct seq_file *seq, loff_t *pos)
{
struct rose_route *rose_route;
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
+ int i = 1;
spin_lock_bh(&rose_route_list_lock);
+ if (*pos == 0)
+ return ROSE_PROC_START;
- len += sprintf(buffer, "lci address callsign neigh <-> lci address callsign neigh\n");
+ for (rose_route = rose_route_list; rose_route && i < *pos;
+ rose_route = rose_route->next, ++i);
- for (rose_route = rose_route_list; rose_route != NULL; rose_route = rose_route->next) {
- if (rose_route->neigh1 != NULL) {
- len += sprintf(buffer + len, "%3.3X %-10s %-9s %05d ",
- rose_route->lci1,
- rose2asc(&rose_route->src_addr),
- ax2asc(&rose_route->src_call),
- rose_route->neigh1->number);
- } else {
- len += sprintf(buffer + len, "000 * * 00000 ");
- }
+ return (i == *pos) ? rose_route : NULL;
+}
+
+static void *rose_route_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+
+ return (v == ROSE_PROC_START) ? rose_route_list
+ : ((struct rose_route *)v)->next;
+}
- if (rose_route->neigh2 != NULL) {
- len += sprintf(buffer + len, "%3.3X %-10s %-9s %05d\n",
+static void rose_route_stop(struct seq_file *seq, void *v)
+{
+ spin_unlock_bh(&rose_route_list_lock);
+}
+
+static int rose_route_show(struct seq_file *seq, void *v)
+{
+ if (v == ROSE_PROC_START)
+ seq_puts(seq,
+ "lci address callsign neigh <-> lci address callsign neigh\n");
+ else {
+ struct rose_route *rose_route = v;
+
+ if (rose_route->neigh1)
+ seq_printf(seq,
+ "%3.3X %-10s %-9s %05d ",
+ rose_route->lci1,
+ rose2asc(&rose_route->src_addr),
+ ax2asc(&rose_route->src_call),
+ rose_route->neigh1->number);
+ else
+ seq_puts(seq,
+ "000 * * 00000 ");
+
+ if (rose_route->neigh2)
+ seq_printf(seq,
+ "%3.3X %-10s %-9s %05d\n",
rose_route->lci2,
rose2asc(&rose_route->dest_addr),
ax2asc(&rose_route->dest_call),
rose_route->neigh2->number);
- } else {
- len += sprintf(buffer + len, "000 * * 00000\n");
- }
-
- pos = begin + len;
-
- if (pos < offset) {
- len = 0;
- begin = pos;
+ else
+ seq_puts(seq,
+ "000 * * 00000\n");
}
+ return 0;
+}
- if (pos > offset + length)
- break;
- }
-
- spin_unlock_bh(&rose_route_list_lock);
-
- *start = buffer + (offset - begin);
- len -= (offset - begin);
-
- if (len > length)
- len = length;
+static struct seq_operations rose_route_seqops = {
+ .start = rose_route_start,
+ .next = rose_route_next,
+ .stop = rose_route_stop,
+ .show = rose_route_show,
+};
+
+static int rose_route_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &rose_route_seqops);
+}
+
+struct file_operations rose_routes_fops = {
+ .owner = THIS_MODULE,
+ .open = rose_route_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
- return len;
-}
+#endif /* CONFIG_PROC_FS */
/*
* Release all memory associated with ROSE routing structures.
-
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This archive was generated by hypermail 2b30 : Wed Aug 06 2003 - 00:47:00 EEST