PUBLIC void test_sp_lookup()
{
errstat err;
capset new_capset;
(void)strcpy(testname, "test_sp_lookup()");
if (verbose) printf("\n---- %s ----\n", testname);
/* Look up an entry with a very long name in the default directory. */
err = sp_lookup(SP_DEFAULT, long_name, &new_capset);
if (test_good(err, "1a")) {
check_capsets("1a", &aux_capset, &new_capset);
cs_free(&new_capset);
}
/* Look up an entry in a regular directory with minimal rights. */
err = sp_lookup(&rgt_capsets[READ], def_name, &new_capset);
if (test_good(err, "1b")) {
check_capsets("1b", &rgt_capsets[DEF], &new_capset);
cs_free(&new_capset);
}
} /* test_sp_lookup() */
int
get_disk_server_cap()
{
capability * tmp;
SP_DIR * dd;
struct sp_direct * dp;
capset dir;
capset vd_cap;
/* Wait until virtual disk is initialized */
disk_wait();
/*
* go through all the directory entries and look for a virtual disk with a
* valid bullet file system
*/
if (sp_lookup(SP_DEFAULT, "/", &dir) != STD_OK ||
(dd = sp_opendir("/")) == 0)
bpanic("get_disk_server_cap: can't open kernel directory");
while ((dp = sp_readdir(dd)) != 0)
#ifdef COLDSTART
if (strncmp(dp->d_name, "vdisk:8", 7) == 0) /* a virtual ramdisk! */
#else
if (strncmp(dp->d_name, "vdisk:", 6) == 0) /* a virtual disk! */
#endif
{
if (sp_lookup(&dir, dp->d_name, &vd_cap) != STD_OK)
bpanic("Lookup of capability %s failed", dp->d_name);
tmp = &vd_cap.cs_suite[0].s_object;
/* Read block 0 into Superblock. */
if (disk_rw(DS_READ, &tmp->cap_priv, D_PHYS_SHIFT, (disk_addr) 0,
(disk_addr) 1, (bufptr) &DiskSuper) != STD_OK)
{
bwarn("Bullet Server WARNING: Cannot access %s", dp->d_name);
continue;
}
/* If it is a valid superblock it is saved and we can go on */
if (valid_superblk(&DiskSuper, &Superblock))
{
message("Valid File System on %s",dp->d_name);
sp_closedir(dd);
Diskcap = *tmp;
return 1;
}
}
/*
** If we get here then none of the directory entries in the kernel had a
** valid bullet file system
*/
sp_closedir(dd);
bwarn("No valid Bullet File System.");
return 0;
}
spkey_t symbol_lookup_db_mem(const void *s, const int slen, struct sptree *spt)
{
register spkey_t key;
register struct syment *se;
struct spblk *spl;
if (s == NULL)
return 0;
key = crc32n(s, slen);
/* Ok, time for the hard work. Lets see if we have this key
in the symtab splay tree */
spl = sp_lookup(key, spt);
if (spl != NULL) {
/* Got it ! Now see that we really have it, and
not only have a hash collision */
se = (struct syment *)spl->data;
do {
if (se->namelen == slen &&
memcmp(se->name, s, slen) == 0) {
/* Really found it! */
return (spkey_t)se;
}
se = se->next;
} while (se != NULL);
}
return 0;
}
PUBLIC void test_sp_discard()
/* This should be the final test because it can mess up the test directory
* structure severely.
*/
{
errstat err;
bool ok;
capset tmp_capset, disc_capset;
(void)strcpy(testname, "test_sp_discard()");
if (verbose) printf("\n---- %s ----\n", testname);
/* Discard an empty directory with minimal rights. */
/* Create a new directory. */
err = sp_create(SP_DEFAULT, def_colnames, &tmp_capset);
if (test_good(err, "1a, sp_create()")) {
/* Append and look-up to get a restricted capset. */
err = sp_append(SP_DEFAULT, aux_name, &tmp_capset, 1, rgt_masks[DEL]);
if (ok = test_good(err, "1a, sp_append()")) {
err = sp_lookup(SP_DEFAULT, aux_name, &disc_capset);
if (ok = test_good(err, "1a, sp_lookup()")) {
/* Try to discard the restricted empty capset. */
err = sp_discard(&disc_capset);
ok = test_good(err, "1a");
/* Free the space for the capset. */
cs_free(&disc_capset);
}
/* Delete the entry for the original capset. */
err = sp_delete(SP_DEFAULT, aux_name);
(void)test_good(err, "1a, sp_delete()");
}
if (!ok) {
/* Destroy the directory using the unrestricted capset. */
err = sp_discard(&tmp_capset);
(void)test_good(err, "1a, sp_discard()");
}
cs_free(&tmp_capset);
}
} /* test_sp_discard() */
spkey_t symbol_db_mem(const void *s, int slen, struct sptree *spt)
{
register spkey_t key;
register struct syment *se, *pe;
struct spblk *spl;
if (s == NULL)
return 0;
key = crc32n(s,slen);
/* Ok, time for the hard work. Lets see if we have this key
in the symtab splay tree */
pe = NULL;
spl = sp_lookup(key, spt);
if (spl != NULL) {
/* Got it ! Now see that we really have it, and
not only have a hash collision */
se = (struct syment *)spl->data;
do {
if (se->namelen == slen &&
memcmp(se->name, s, slen) == 0) {
/* Really found it! */
return (spkey_t)se;
}
pe = se;
se = se->next;
} while (se != NULL);
}
se = (struct syment *)hmalloc(sizeof (struct syment) + slen);
memcpy((void*)se->name, s, slen);
((char*)se->name)[slen] = 0;
se->namelen = slen;
se->next = NULL;
if (pe != NULL)
pe->next = se;
else {
spl = sp_install(key, spt);
spl->data = (void *)se;
}
return (spkey_t)se;
}
void symbol_free_db_mem(const void *s, int slen, struct sptree *spt)
{
register spkey_t key;
register struct syment *se, *pe;
struct spblk *spl;
if (s == NULL || spt == NULL)
return;
key = crc32n(s, slen);
/* Ok, time for the hard work. Lets see if we have this key
in the symtab splay tree (we can't use cache here!) */
pe = NULL;
spl = sp_lookup(key, spt);
if (spl != NULL) {
/* Got it ! Now see that we really have it, and
not only have a hash collision */
se = (struct syment *)spl->data;
do {
if (se->namelen == slen &&
memcmp(se->name, s, slen) == 0) {
/* Really found it! */
if (pe != NULL)
pe->next = se->next;
else
spl->data = (void*) se->next;
hfree(se);
break;
}
pe = se;
se = se->next;
} while (se != NULL);
}
if (spl != NULL && spl->data == NULL)
sp_delete(spl, spt);
}