static struct property * __init build_one_prop(phandle node, char *prev,
char *special_name,
void *special_val,
int special_len)
{
static struct property *tmp = NULL;
struct property *p;
const char *name;
if (tmp) {
p = tmp;
memset(p, 0, sizeof(*p) + 32);
tmp = NULL;
} else {
p = prom_early_alloc(sizeof(struct property) + 32);
p->unique_id = prom_unique_id++;
}
p->name = (char *) (p + 1);
if (special_name) {
strcpy(p->name, special_name);
p->length = special_len;
p->value = prom_early_alloc(special_len);
memcpy(p->value, special_val, special_len);
} else {
if (prev == NULL) {
name = prom_firstprop(node, p->name);
} else {
name = prom_nextprop(node, prev, p->name);
}
if (!name || strlen(name) == 0) {
tmp = p;
return NULL;
}
#ifdef CONFIG_SPARC32
strcpy(p->name, name);
#endif
p->length = prom_getproplen(node, p->name);
if (p->length <= 0) {
p->length = 0;
} else {
int len;
p->value = prom_early_alloc(p->length + 1);
len = prom_getproperty(node, p->name, p->value,
p->length);
if (len <= 0)
p->length = 0;
((unsigned char *)p->value)[p->length] = '\0';
}
}
return p;
}
static ssize_t property_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
struct inode *inode = filp->f_dentry->d_inode;
int i, j, k;
u32 node;
char *p, *s;
u32 *q;
openprom_property *op;
char buffer[64];
if (filp->f_pos >= 0xffffff || count >= 0xffffff)
return -EINVAL;
if (!filp->private_data) {
node = nodes[(u16)((long)inode->u.generic_ip)].node;
i = ((u32)(long)inode->u.generic_ip) >> 16;
if ((u16)((long)inode->u.generic_ip) == aliases) {
if (i >= aliases_nodes)
p = NULL;
else
p = alias_names [i];
} else
for (p = prom_firstprop (node, buffer);
i && p && *p;
p = prom_nextprop (node, p, buffer), i--)
/* nothing */ ;
if (!p || !*p)
return -EIO;
i = prom_getproplen (node, p);
if (i < 0) {
if ((u16)((long)inode->u.generic_ip) == aliases)
i = 0;
else
return -EIO;
}
k = i;
if (i < 64) i = 64;
filp->private_data = kmalloc (sizeof (openprom_property)
+ (j = strlen (p)) + 2 * i,
GFP_KERNEL);
if (!filp->private_data)
return -ENOMEM;
op = (openprom_property *)filp->private_data;
op->flag = 0;
op->alloclen = 2 * i;
strcpy (op->name, p);
op->value = (char *)(((unsigned long)(op->name + j + 4)) & ~3);
op->len = k;
if (k && prom_getproperty (node, p, op->value, i) < 0)
return -EIO;
op->value [k] = 0;
if (k) {
for (s = NULL, p = op->value; p < op->value + k; p++) {
if ((*p >= ' ' && *p <= '~') || *p == '\n') {
op->flag |= OPP_STRING;
s = p;
continue;
}
if (p > op->value && !*p && s == p - 1) {
if (p < op->value + k - 1)
op->flag |= OPP_STRINGLIST;
else
op->flag |= OPP_ASCIIZ;
continue;
}
if (k == 1 && !*p) {
op->flag |= (OPP_STRING|OPP_ASCIIZ);
break;
}
op->flag &= ~(OPP_STRING|OPP_STRINGLIST);
if (k & 3)
op->flag |= OPP_HEXSTRING;
else
op->flag |= OPP_BINARY;
break;
}
if (op->flag & OPP_STRINGLIST)
op->flag &= ~(OPP_STRING);
if (op->flag & OPP_ASCIIZ)
op->len--;
}
} else
