#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "types.h"
#include "struct.h"
#include "pathname.h"

extern struct inode_info inode[];

pathname_of_inode(ino, pnbuf)
	char *pnbuf;
{
	int level, revpath[MAX_DIR_NEST];
	struct inode_info *inf;
	char *op;

	for (level = 0; ino != 1; ino = inode[ino].parent) {
		if (!inode[ino].parent)
			return(-1);
		if (level >= MAX_DIR_NEST)
			return(-1);
		revpath[level++] = ino;
	}
	op = pnbuf;
	*op++ = '/';
	while (level) {
		level--;
		inf = inode + revpath[level];
		switch (inf->type) {
		case 0xE1:
		case 0xF1:
			/* good only for the last component */
			if (!level)
				break;
			else
				return(-1);
		case 0xF2:
			/* good for all components */
			break;
		default:
			/* bad */
			return(-1);
		}
		strcpy(op, inf->dataptr);
		op += strlen(inf->dataptr);
		if (inf->type == 0xF2)
			*op++ = '/';
	}
	*op = '\0';
	return(0);
}