10 #include <sys/namei.h>
11 #include <sys/param.h>
12 #include <sys/queue.h>
14 #include <sys/vnode.h>
15 /*----------------------------------*/
16 static u_int crc16_table[16] = {
17 0x0000, 0xCC01, 0xD801, 0x1400,
18 0xF001, 0x3C00, 0x2800, 0xE401,
19 0xA001, 0x6C00, 0x7800, 0xB401,
20 0x5000, 0x9C01, 0x8801, 0x4400
23 /* XXX Taken from sys/kern/vfs_cache.c */
25 LIST_ENTRY(namecache) nc_hash;
26 LIST_ENTRY(namecache) nc_src;
27 TAILQ_ENTRY(namecache) nc_dst;
36 wlpsacrc(u_char *buf, u_int len)
41 for (i = 0; i < len; i++, buf++) {
43 r1 = crc16_table[crc & 0xF];
44 crc = (crc >> 4) & 0x0FFF;
45 crc = crc ^ r1 ^ crc16_table[*buf & 0xF];
48 r1 = crc16_table[crc & 0xF];
49 crc = (crc >> 4) & 0x0FFF;
50 crc = crc ^ r1 ^ crc16_table[(*buf >> 4) & 0xF];
55 /*----------------------------------*/
67 main(int argc, char **argv)
69 int nchash, i, j, k, kn;
72 LIST_HEAD(nchashhead, namecache) *nchashtbl;
76 kvm_t *kvm = kvm_open(NULL, NULL, NULL, O_RDONLY, argv[0]);
80 printf("kvm: %p\n", kvm);
81 printf("kvm_nlist: %d\n", kvm_nlist(kvm, nl));
82 kvm_read(kvm, nl[0].n_value, &nchash, sizeof nchash);
84 nchashtbl = malloc(nchash * sizeof *nchashtbl);
85 nc = malloc(sizeof *nc + NAME_MAX);
86 newbucket = malloc(nchash * sizeof (int));
87 memset(newbucket, 0, nchash * sizeof (int));
88 kvm_read(kvm, nl[1].n_value, &p, sizeof p);
89 kvm_read(kvm, p, nchashtbl, nchash * sizeof *nchashtbl);
90 for (i=0; i < nchash; i++) {
95 p = (u_long)LIST_FIRST(nchashtbl+i);
98 kvm_read(kvm, p, nc, sizeof *nc + NAME_MAX);
99 kvm_read(kvm, (u_long)nc->nc_dvp, &vn, sizeof vn);
100 nc->nc_name[nc->nc_nlen] = '\0';
101 for (j=k=kn=0;nc->nc_name[j];j++) {
109 kn = wlpsacrc(nc->nc_name,nc->nc_nlen);
111 /* kn += (u_long)vn.v_data >> 8; */
112 /* kn += (u_long)nc->nc_dvp >> 7; */
117 printf("%4d dvp %08x hash %08x vp %08x id %08x name <%s>\n",
118 i,nc->nc_dvp, k, nc->nc_vp, vn.v_id, nc->nc_name);
120 p = (u_long)LIST_NEXT(nc, nc_hash);
124 for (i=0; i < nchash; i++) {
125 histn[newbucket[i]]++;
131 if (histo[i] || histn[i])
132 printf("H%02d %4d %4d / %4d %4d\n",i,histo[i], p1 , histn[i], p2);