/* Copy one credential structure to another, being careful about references */
static inline void
afs_copy_creds(cred_t *to_cred, const cred_t *from_cred) {
afs_set_cr_uid(to_cred, afs_cr_uid(from_cred));
afs_set_cr_gid(to_cred, afs_cr_gid(from_cred));
afs_set_cr_ruid(to_cred, afs_cr_ruid(from_cred));
afs_set_cr_rgid(to_cred, afs_cr_rgid(from_cred));
get_group_info(afs_cr_group_info(from_cred));
afs_set_cr_group_info(to_cred, afs_cr_group_info(from_cred));
}
void
osi_Init(void)
{
static int once = 0;
if (once++ > 0) /* just in case */
return;
osi_InitGlock();
/* Initialize a lock for the kernel hcrypto bits. */
#ifndef UKERNEL
init_hckernel_mutex();
#endif
if (!afs_osicred_initialized) {
#if defined(AFS_DARWIN80_ENV)
afs_osi_ctxtp_initialized = 0;
afs_osi_ctxtp = NULL; /* initialized in afs_Daemon since it has
a proc reference that cannot be changed */
#endif
#if defined(AFS_XBSD_ENV)
/* Can't just invent one, must use crget() because of mutex */
afs_osi_credp =
crdup(osi_curcred());
#elif defined(AFS_SUN5_ENV)
afs_osi_credp = kcred;
#else
memset(&afs_osi_cred, 0, sizeof(afs_ucred_t));
#if defined(AFS_LINUX26_ENV)
afs_set_cr_group_info(&afs_osi_cred, groups_alloc(0));
#endif
#if defined(AFS_DARWIN80_ENV)
afs_osi_cred.cr_ref = 1; /* kauth_cred_get_ref needs 1 existing ref */
#else
# if !(defined(AFS_LINUX26_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED))
crhold(&afs_osi_cred); /* don't let it evaporate */
# endif
#endif
afs_osi_credp = &afs_osi_cred;
#endif
afs_osicred_initialized = 1;
}
#ifdef AFS_SGI64_ENV
osi_flid.fl_pid = osi_flid.fl_sysid = 0;
#endif
init_et_to_sys_error();
}
/* Return a duplicate of the cred. */
cred_t *
crdup(cred_t * cr)
{
cred_t *tmp = crget();
#if defined(STRUCT_TASK_STRUCT_HAS_CRED)
afs_copy_creds(tmp, cr);
#else
afs_set_cr_uid(tmp, afs_cr_uid(cr));
afs_set_cr_ruid(tmp, afs_cr_ruid(cr));
afs_set_cr_gid(tmp, afs_cr_gid(cr));
afs_set_cr_rgid(tmp, afs_cr_rgid(cr));
get_group_info(afs_cr_group_info(cr));
afs_set_cr_group_info(tmp, afs_cr_group_info(cr));
#endif
return tmp;
}
cred_t *
crref(void)
{
#if defined(STRUCT_TASK_STRUCT_HAS_CRED)
return (cred_t *)get_current_cred();
#else
cred_t *cr = crget();
afs_set_cr_uid(cr, current_fsuid());
afs_set_cr_ruid(cr, current_uid());
afs_set_cr_gid(cr, current_fsgid());
afs_set_cr_rgid(cr, current_gid());
task_lock(current);
get_group_info(current_group_info());
afs_set_cr_group_info(cr, current_group_info());
task_unlock(current);
return cr;
#endif
}
