2 * Copyright (C) Joerg Lenneis 2003
3 * Copyright (C) Frank Lahm 2010
4 * All Rights Reserved. See COPYING.
9 #endif /* HAVE_CONFIG_H */
11 #include <netatalk/endian.h>
14 #ifdef HAVE_SYS_TYPES_H
15 #include <sys/types.h>
16 #endif /* HAVE_SYS_TYPES_H */
17 #include <sys/param.h>
18 #include <sys/cdefs.h>
21 #include <atalk/cnid_dbd_private.h>
26 * This implementation is portable, but could probably be faster by using htonl
27 * where appropriate. Also, this again doubles code from the cdb backend.
29 static void pack_devino(unsigned char *buf, dev_t dev, ino_t ino)
31 buf[CNID_DEV_LEN - 1] = dev; dev >>= 8;
32 buf[CNID_DEV_LEN - 2] = dev; dev >>= 8;
33 buf[CNID_DEV_LEN - 3] = dev; dev >>= 8;
34 buf[CNID_DEV_LEN - 4] = dev; dev >>= 8;
35 buf[CNID_DEV_LEN - 5] = dev; dev >>= 8;
36 buf[CNID_DEV_LEN - 6] = dev; dev >>= 8;
37 buf[CNID_DEV_LEN - 7] = dev; dev >>= 8;
38 buf[CNID_DEV_LEN - 8] = dev;
40 buf[CNID_DEV_LEN + CNID_INO_LEN - 1] = ino; ino >>= 8;
41 buf[CNID_DEV_LEN + CNID_INO_LEN - 2] = ino; ino >>= 8;
42 buf[CNID_DEV_LEN + CNID_INO_LEN - 3] = ino; ino >>= 8;
43 buf[CNID_DEV_LEN + CNID_INO_LEN - 4] = ino; ino >>= 8;
44 buf[CNID_DEV_LEN + CNID_INO_LEN - 5] = ino; ino >>= 8;
45 buf[CNID_DEV_LEN + CNID_INO_LEN - 6] = ino; ino >>= 8;
46 buf[CNID_DEV_LEN + CNID_INO_LEN - 7] = ino; ino >>= 8;
47 buf[CNID_DEV_LEN + CNID_INO_LEN - 8] = ino;
51 int didname(DB *dbp _U_, const DBT *pkey _U_, const DBT *pdata, DBT *skey)
55 memset(skey, 0, sizeof(DBT));
56 skey->data = (char *)pdata->data + CNID_DID_OFS;
57 /* FIXME: At least DB 4.0.14 and 4.1.25 pass in the correct length of
58 pdata.size. strlen is therefore not needed. Also, skey should be zeroed
60 len = strlen((char *)skey->data + CNID_DID_LEN);
61 skey->size = CNID_DID_LEN + len + 1;
66 int devino(DB *dbp _U_, const DBT *pkey _U_, const DBT *pdata, DBT *skey)
68 memset(skey, 0, sizeof(DBT));
69 skey->data = (char *)pdata->data + CNID_DEVINO_OFS;
70 skey->size = CNID_DEVINO_LEN;
75 int idxname(DB *dbp _U_, const DBT *pkey _U_, const DBT *pdata, DBT *skey)
77 memset(skey, 0, sizeof(DBT));
78 skey->data = (char *)pdata->data + CNID_NAME_OFS;
79 skey->size = strlen((char *)skey->data) + 1;
83 /* The equivalent to make_cnid_data in the cnid library. Non re-entrant. We
84 differ from make_cnid_data in that we never return NULL, rqst->name cannot
85 ever cause start[] to overflow because name length is checked in libatalk. */
87 unsigned char *pack_cnid_data(struct cnid_dbd_rqst *rqst)
89 static unsigned char start[CNID_HEADER_LEN + MAXPATHLEN + 1];
90 unsigned char *buf = start +CNID_LEN;
93 pack_devino(buf, rqst->dev, rqst->ino);
94 buf += CNID_DEVINO_LEN;
96 i = htonl(rqst->type);
97 memcpy(buf, &i, sizeof(i));
100 /* did is already in network byte order */
101 buf = memcpy(buf, &rqst->did, sizeof(rqst->did));
102 buf += sizeof(rqst->did);
103 buf = memcpy(buf, rqst->name, rqst->namelen);
104 *(buf + rqst->namelen) = '\0';