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Fix error in generic_proc_write()

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This commit is contained in:
Vitaly Lavrov 2019-11-15 23:23:38 +03:00
parent bfd0090982
commit 33544aa469
1 changed files with 8 additions and 8 deletions
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16
ndpi-netfilter/src/ndpi_proc_generic.c
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@ -78,25 +78,25 @@ generic_proc_write(struct ndpi_net *n, const char __user *buffer,
skip = w_buf->cpos == w_buf->max - 1;
while(pos < length) {
l = min(length,sizeof(buf)-1);
l = min(length-pos,sizeof(buf)-1);
memset(buf,0,sizeof(buf));
if (!(ACCESS_OK(VERIFY_READ, buffer+pos, l) &&
!__copy_from_user(&buf[0], buffer+pos, l)))
return -EFAULT;
for(i = 0; i < l; i++) {
for(i = 0; i < l; (*loff)++,i++) {
c = buf[i];
if(c == '\n' || !c) {
if(w_buf->cpos) {
if(ndpi_log_debug > 1)
pr_info("%s:%s cmd %d:%s\n", __func__,n->ns_name,
w_buf->cpos,&w_buf->cmd[0]);
pr_info("%s:%s POS %lld cmd %d:'%s' i %d\n", __func__,n->ns_name,
*loff,w_buf->cpos,&w_buf->cmd[0],i);
r = (parse_line)(n,&w_buf->cmd[0]);
memset(&w_buf->cmd[0],0,w_buf->cpos);
skip = 0;
w_buf->cpos = 0;
if(r) return -EINVAL;
}
skip = 0;
w_buf->cpos = 0;
memset(&w_buf->cmd[0],0,cmd_size);
if(r) return -EINVAL;
} else {
if(w_buf->cpos < w_buf->max - 1)
w_buf->cmd[w_buf->cpos++] = c;