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D61339.1794418791.diff
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diff --git a/sys/dev/axgbe/xgbe-sysctl.c b/sys/dev/axgbe/xgbe-sysctl.c
--- a/sys/dev/axgbe/xgbe-sysctl.c
+++ b/sys/dev/axgbe/xgbe-sysctl.c
@@ -233,7 +233,7 @@
#define XGBE_STATS_COUNT ARRAY_SIZE(xgbe_gstring_stats)
char** alloc_sysctl_buffer(void);
-void get_val(char *buf, char **op, char **val, int *n_op);
+int get_val(char *buf, char **op, char **val, int *n_op);
void fill_data(struct sysctl_op *sys_op, int flag, unsigned int value);
static int
@@ -262,20 +262,25 @@
return (0);
}
+#define AXGBE_SYSCTL_NOPS 32
+#define AXGBE_SYSCTL_OPLEN 32
+
char**
alloc_sysctl_buffer(void)
{
char **buffer;
int i;
- buffer = malloc(sizeof(char *)*32, M_AXGBE, M_WAITOK | M_ZERO);
- for(i = 0; i < 32; i++)
- buffer[i] = malloc(sizeof(char)*32, M_AXGBE, M_WAITOK | M_ZERO);
+ buffer = mallocarray(AXGBE_SYSCTL_NOPS, sizeof(char *), M_AXGBE,
+ M_WAITOK | M_ZERO);
+ for (i = 0; i < AXGBE_SYSCTL_NOPS; i++)
+ buffer[i] = mallocarray(AXGBE_SYSCTL_OPLEN, sizeof(char), M_AXGBE,
+ M_WAITOK | M_ZERO);
return (buffer);
}
-void
+int
get_val(char *buf, char **op, char **val, int *n_op)
{
int blen = strlen(buf);
@@ -283,34 +288,41 @@
int i, j;
*n_op = 0;
- for (i = 0; i < blen; i++) {
+ for (i = 0; i < blen && count < AXGBE_SYSCTL_NOPS; i++) {
count++;
/* Get sysctl command option */
- for (j = 0; buf[i] != ' '; j++) {
+ for (j = 0; j < AXGBE_SYSCTL_OPLEN - 1 && buf[i] != ' '; j++) {
if (i >= blen)
break;
op[*n_op][j] = buf[i++];
}
- op[*n_op][j+1] = '\0';
+ if (i < blen && buf[i] != ' ')
+ return (-EINVAL);
+ op[*n_op][j] = '\0';
if (i >= strlen(buf))
goto out;
/* Get sysctl value*/
i++;
- for (j = 0; buf[i] != ' '; j++) {
+ for (j = 0; j < AXGBE_SYSCTL_OPLEN - 1 && buf[i] != ' '; j++) {
if (i >= blen)
break;
val[*n_op][j] = buf[i++];
}
- val[*n_op][j+1] = '\0';
+ if (i < blen && buf[i] != ' ')
+ return (-EINVAL);
+ val[*n_op][j] = '\0';
if (i >= strlen(buf))
goto out;
*n_op = count;
}
+ if (i < blen)
+ return (-EINVAL);
out:
*n_op = count;
+ return (0);
}
void
@@ -429,9 +441,9 @@
op = alloc_sysctl_buffer();
val = alloc_sysctl_buffer();
- get_val(buf, op, val, &n_op);
+ rc = get_val(buf, op, val, &n_op);
- for (i = 0; i < n_op; i++) {
+ for (i = 0; rc == 0 && i < n_op; i++) {
for (idx = 0; idx < n_info; idx++) {
if (strcmp(info[idx].name, op[i]) == 0) {
if (strcmp(info[idx].support,
@@ -464,7 +476,8 @@
fill_data(sys_op,
info[idx].flag, DUPLEX_FULL);
else
- exit_bad_op();
+ rc = exit_bad_op();
+ break;
default:
rc = exit_bad_op();
}
@@ -687,8 +700,10 @@
rc = get_ubuf(req, buf);
if (rc == 0) {
- parse_generic_sysctl(pdata, buf, sysctl_coalesce,
- ARRAY_SIZE(sysctl_coalesce));
+ rc = parse_generic_sysctl(pdata, buf, sysctl_coalesce,
+ ARRAY_SIZE(sysctl_coalesce));
+ if (rc != 0)
+ return (rc);
rx_riwt = hw_if->usec_to_riwt(pdata, sys_op->rx_coalesce_usecs);
rx_usecs = sys_op->rx_coalesce_usecs;
@@ -794,8 +809,10 @@
rc = get_ubuf(req, buf);
if (rc == 0) {
- parse_generic_sysctl(pdata, buf, sysctl_pauseparam,
+ rc = parse_generic_sysctl(pdata, buf, sysctl_pauseparam,
ARRAY_SIZE(sysctl_pauseparam));
+ if (rc != 0)
+ return (rc);
if (sys_op->autoneg && (pdata->phy.autoneg != AUTONEG_ENABLE)) {
axgbe_error("autoneg disabled, pause autoneg not available\n");
@@ -913,8 +930,10 @@
rc = get_ubuf(req, buf);
if (rc == 0) {
- parse_generic_sysctl(pdata, buf, sysctl_linksettings,
+ rc = parse_generic_sysctl(pdata, buf, sysctl_linksettings,
ARRAY_SIZE(sysctl_linksettings));
+ if (rc != 0)
+ return (rc);
speed = sys_op->speed;
@@ -1011,8 +1030,10 @@
rc = get_ubuf(req, buf);
if (rc == 0) {
- parse_generic_sysctl(pdata, buf, sysctl_ringparam,
+ rc = parse_generic_sysctl(pdata, buf, sysctl_ringparam,
ARRAY_SIZE(sysctl_ringparam));
+ if (rc != 0)
+ return (rc);
if (sys_op->rx_mini_pending || sys_op->rx_jumbo_pending) {
axgbe_error("unsupported ring parameter\n");
@@ -1131,8 +1152,10 @@
rc = get_ubuf(req, buf);
if (rc == 0) {
- parse_generic_sysctl(pdata, buf, sysctl_channels,
+ rc = parse_generic_sysctl(pdata, buf, sysctl_channels,
ARRAY_SIZE(sysctl_channels));
+ if (rc != 0)
+ return (rc);
axgbe_error( "channel inputs: combined=%u, rx-only=%u,"
" tx-only=%u\n", sys_op->combined_count,

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