Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 14:11:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

[AX25]: Make ax2asc thread-proof

Browse Source 
Ax2asc was still using a static buffer for all invocations which isn't
exactly SMP-safe.  Change ax2asc to take an additional result buffer as
the argument.  Change all callers to provide such a buffer.

Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ralf Baechle 2005-09-06 15:49:39 -07:00 committed by David S. Miller
parent f2c383988d
commit f75268cd6c
10 changed files with 39 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/ax25.h
View File

@ -257,7 +257,7 @@ extern struct sock *ax25_make_new(struct sock *, struct ax25_dev *);
/* ax25_addr.c */
extern ax25_address null_ax25_address;
extern char *ax2asc(ax25_address *);
extern char *ax2asc(char *buf, ax25_address *);
extern ax25_address *asc2ax(char *);
extern int ax25cmp(ax25_address *, ax25_address *);
extern int ax25digicmp(ax25_digi *, ax25_digi *);

7
net/ax25/af_ax25.c
View File

@ -1874,6 +1874,7 @@ static void ax25_info_stop(struct seq_file *seq, void *v)
static int ax25_info_show(struct seq_file *seq, void *v)
{
ax25_cb *ax25 = v;
char buf[11];
int k;
@ -1885,13 +1886,13 @@ static int ax25_info_show(struct seq_file *seq, void *v)
seq_printf(seq, "%8.8lx %s %s%s ",
(long) ax25,
ax25->ax25_dev == NULL? "???" : ax25->ax25_dev->dev->name,
ax2asc(&ax25->source_addr),
ax2asc(buf, &ax25->source_addr),
ax25->iamdigi? "*":"");
seq_printf(seq, "%s", ax2asc(&ax25->dest_addr));
seq_printf(seq, "%s", ax2asc(buf, &ax25->dest_addr));
for (k=0; (ax25->digipeat != NULL) && (k < ax25->digipeat->ndigi); k++) {
seq_printf(seq, ",%s%s",
ax2asc(&ax25->digipeat->calls[k]),
ax2asc(buf, &ax25->digipeat->calls[k]),
ax25->digipeat->repeated[k]? "*":"");
}

3
net/ax25/ax25_addr.c
View File

@ -36,9 +36,8 @@ ax25_address null_ax25_address = {{0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00}};
/*
* ax25 -> ascii conversion
*/
char *ax2asc(ax25_address *a)
char *ax2asc(char *buf, ax25_address *a)
{
static char buf[11];
char c, *s;
int n;

7
net/ax25/ax25_route.c
View File

@ -298,6 +298,8 @@ static void ax25_rt_seq_stop(struct seq_file *seq, void *v)
static int ax25_rt_seq_show(struct seq_file *seq, void *v)
{
char buf[11];
if (v == SEQ_START_TOKEN)
seq_puts(seq, "callsign dev mode digipeaters\n");
else {
@ -308,7 +310,7 @@ static int ax25_rt_seq_show(struct seq_file *seq, void *v)
if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0)
callsign = "default";
else
callsign = ax2asc(&ax25_rt->callsign);
callsign = ax2asc(buf, &ax25_rt->callsign);
seq_printf(seq, "%-9s %-4s",
callsign,
@ -328,7 +330,8 @@ static int ax25_rt_seq_show(struct seq_file *seq, void *v)
if (ax25_rt->digipeat != NULL)
for (i = 0; i < ax25_rt->digipeat->ndigi; i++)
seq_printf(seq, " %s", ax2asc(&ax25_rt->digipeat->calls[i]));
seq_printf(seq, " %s",
ax2asc(buf, &ax25_rt->digipeat->calls[i]));
seq_puts(seq, "\n");
}

4
net/ax25/ax25_uid.c
View File

@ -168,12 +168,14 @@ static void ax25_uid_seq_stop(struct seq_file *seq, void *v)
static int ax25_uid_seq_show(struct seq_file *seq, void *v)
{
char buf[11];
if (v == SEQ_START_TOKEN)
seq_printf(seq, "Policy: %d\n", ax25_uid_policy);
else {
struct ax25_uid_assoc *pt = v;
seq_printf(seq, "%6d %s\n", pt->uid, ax2asc(&pt->call));
seq_printf(seq, "%6d %s\n", pt->uid, ax2asc(buf, &pt->call));
}
return 0;
}

7
net/netrom/af_netrom.c
View File

@ -1261,6 +1261,7 @@ static int nr_info_show(struct seq_file *seq, void *v)
struct net_device *dev;
struct nr_sock *nr;
const char *devname;
char buf[11];
if (v == SEQ_START_TOKEN)
seq_puts(seq,
@ -1276,11 +1277,11 @@ static int nr_info_show(struct seq_file *seq, void *v)
else
devname = dev->name;
seq_printf(seq, "%-9s ", ax2asc(&nr->user_addr));
seq_printf(seq, "%-9s ", ax2asc(&nr->dest_addr));
seq_printf(seq, "%-9s ", ax2asc(buf, &nr->user_addr));
seq_printf(seq, "%-9s ", ax2asc(buf, &nr->dest_addr));
seq_printf(seq,
"%-9s %-3s %02X/%02X %02X/%02X %2d %3d %3d %3d %3lu/%03lu %2lu/%02lu %3lu/%03lu %3lu/%03lu %2d/%02d %3d %5d %5d %ld\n",
ax2asc(&nr->source_addr),
ax2asc(buf, &nr->source_addr),
devname,
nr->my_index,
nr->my_id,

8
net/netrom/nr_route.c
View File

@ -881,6 +881,7 @@ static void nr_node_stop(struct seq_file *seq, void *v)
static int nr_node_show(struct seq_file *seq, void *v)
{
char buf[11];
int i;
if (v == SEQ_START_TOKEN)
@ -890,7 +891,7 @@ static int nr_node_show(struct seq_file *seq, void *v)
struct nr_node *nr_node = v;
nr_node_lock(nr_node);
seq_printf(seq, "%-9s %-7s %d %d",
ax2asc(&nr_node->callsign),
ax2asc(buf, &nr_node->callsign),
(nr_node->mnemonic[0] == '\0') ? "*" : nr_node->mnemonic,
nr_node->which + 1,
nr_node->count);
@ -964,6 +965,7 @@ static void nr_neigh_stop(struct seq_file *seq, void *v)
static int nr_neigh_show(struct seq_file *seq, void *v)
{
char buf[11];
int i;
if (v == SEQ_START_TOKEN)
@ -973,7 +975,7 @@ static int nr_neigh_show(struct seq_file *seq, void *v)
seq_printf(seq, "%05d %-9s %-4s %3d %d %3d %3d",
nr_neigh->number,
ax2asc(&nr_neigh->callsign),
ax2asc(buf, &nr_neigh->callsign),
nr_neigh->dev ? nr_neigh->dev->name : "???",
nr_neigh->quality,
nr_neigh->locked,
@ -983,7 +985,7 @@ static int nr_neigh_show(struct seq_file *seq, void *v)
if (nr_neigh->digipeat != NULL) {
for (i = 0; i < nr_neigh->digipeat->ndigi; i++)
seq_printf(seq, " %s",
ax2asc(&nr_neigh->digipeat->calls[i]));
ax2asc(buf, &nr_neigh->digipeat->calls[i]));
}
seq_puts(seq, "\n");

6
net/rose/af_rose.c
View File

@ -1363,6 +1363,8 @@ static void rose_info_stop(struct seq_file *seq, void *v)
static int rose_info_show(struct seq_file *seq, void *v)
{
char buf[11];
if (v == SEQ_START_TOKEN)
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");
@ -1380,12 +1382,12 @@ static int rose_info_show(struct seq_file *seq, void *v)
seq_printf(seq, "%-10s %-9s ",
rose2asc(&rose->dest_addr),
ax2asc(&rose->dest_call));
ax2asc(buf, &rose->dest_call));
if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
callsign = "??????-?";
else
callsign = ax2asc(&rose->source_call);
callsign = ax2asc(buf, &rose->source_call);
seq_printf(seq,
"%-10s %-9s %-5s %3.3X %05d %d %d %d %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",

14
net/rose/rose_route.c
View File

@ -851,6 +851,7 @@ int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
unsigned char cause, diagnostic;
struct net_device *dev;
int len, res = 0;
char buf[11];
#if 0
if (call_in_firewall(PF_ROSE, skb->dev, skb->data, NULL, &skb) != FW_ACCEPT)
@ -876,7 +877,7 @@ int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
if (rose_neigh == NULL) {
printk("rose_route : unknown neighbour or device %s\n",
ax2asc(&ax25->dest_addr));
ax2asc(buf, &ax25->dest_addr));
goto out;
}
@ -1178,6 +1179,7 @@ static void rose_neigh_stop(struct seq_file *seq, void *v)
static int rose_neigh_show(struct seq_file *seq, void *v)
{
char buf[11];
int i;
if (v == SEQ_START_TOKEN)
@ -1189,7 +1191,7 @@ static int rose_neigh_show(struct seq_file *seq, void *v)
/* if (!rose_neigh->loopback) { */
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->loopback) ? "RSLOOP-0" : ax2asc(buf, &rose_neigh->callsign),
rose_neigh->dev ? rose_neigh->dev->name : "???",
rose_neigh->count,
rose_neigh->use,
@ -1200,7 +1202,7 @@ static int rose_neigh_show(struct seq_file *seq, void *v)
if (rose_neigh->digipeat != NULL) {
for (i = 0; i < rose_neigh->digipeat->ndigi; i++)
seq_printf(seq, " %s", ax2asc(&rose_neigh->digipeat->calls[i]));
seq_printf(seq, " %s", ax2asc(buf, &rose_neigh->digipeat->calls[i]));
}
seq_puts(seq, "\n");
@ -1260,6 +1262,8 @@ static void rose_route_stop(struct seq_file *seq, void *v)
static int rose_route_show(struct seq_file *seq, void *v)
{
char buf[11];
if (v == SEQ_START_TOKEN)
seq_puts(seq,
"lci address callsign neigh <-> lci address callsign neigh\n");
@ -1271,7 +1275,7 @@ static int rose_route_show(struct seq_file *seq, void *v)
"%3.3X %-10s %-9s %05d ",
rose_route->lci1,
rose2asc(&rose_route->src_addr),
ax2asc(&rose_route->src_call),
ax2asc(buf, &rose_route->src_call),
rose_route->neigh1->number);
else
seq_puts(seq,
@ -1282,7 +1286,7 @@ static int rose_route_show(struct seq_file *seq, void *v)
"%3.3X %-10s %-9s %05d\n",
rose_route->lci2,
rose2asc(&rose_route->dest_addr),
ax2asc(&rose_route->dest_call),
ax2asc(buf, &rose_route->dest_call),
rose_route->neigh2->number);
else
seq_puts(seq,

5
net/rose/rose_subr.c
View File

@ -400,6 +400,7 @@ static int rose_create_facilities(unsigned char *buffer, struct rose_sock *rose)
{
unsigned char *p = buffer + 1;
char *callsign;
char buf[11];
int len, nb;
/* National Facilities */
@ -456,7 +457,7 @@ static int rose_create_facilities(unsigned char *buffer, struct rose_sock *rose)
*p++ = FAC_CCITT_DEST_NSAP;
callsign = ax2asc(&rose->dest_call);
callsign = ax2asc(buf, &rose->dest_call);
*p++ = strlen(callsign) + 10;
*p++ = (strlen(callsign) + 9) * 2; /* ??? */
@ -471,7 +472,7 @@ static int rose_create_facilities(unsigned char *buffer, struct rose_sock *rose)
*p++ = FAC_CCITT_SRC_NSAP;
callsign = ax2asc(&rose->source_call);
callsign = ax2asc(buf, &rose->source_call);
*p++ = strlen(callsign) + 10;
*p++ = (strlen(callsign) + 9) * 2; /* ??? */