2 * Copyrigh 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include "afs/param.h"
14 #include "afs/sysincludes.h" /* Standard vendor system headers */
15 #include "afsincludes.h" /* Afs-based standard headers */
16 #include "afs/afs_stats.h" /* afs statistics */
18 #include <sys/adspace.h> /* for vm_att(), vm_det() */
21 /* osi_Init -- do once per kernel installation initialization.
22 * -- On Solaris this is called from modload initialization.
23 * -- On AIX called from afs_config.
24 * -- On HP called from afsc_link.
25 * -- On SGI called from afs_init. */
27 /* No hckernel-specific header for this prototype. */
29 extern void init_hckernel_mutex(void);
32 afs_lock_t afs_ftf; /* flush text lock */
35 lock_t afs_event_lock;
42 afs_ucred_t *afs_osi_credp;
44 #if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
45 kmutex_t afs_global_lock;
48 #if defined(AFS_SGI_ENV) && !defined(AFS_SGI64_ENV)
49 long afs_global_owner;
52 #if defined(AFS_DARWIN_ENV)
53 thread_t afs_global_owner;
54 #ifdef AFS_DARWIN80_ENV
55 lck_mtx_t *afs_global_lock;
57 struct lock__bsd__ afs_global_lock;
61 #if defined(AFS_XBSD_ENV) && !defined(AFS_FBSD_ENV)
62 # if defined(AFS_NBSD50_ENV)
63 kmutex_t afs_global_mtx;
65 struct lock afs_global_lock;
66 afs_proc_t *afs_global_owner;
68 #elif defined(AFS_FBSD_ENV)
69 struct mtx afs_global_mtx;
70 struct thread *afs_global_owner;
73 #if defined(AFS_AIX41_ENV)
74 simple_lock_data afs_global_lock;
81 if (once++ > 0) /* just in case */
86 /* Initialize a lock for the kernel hcrypto bits. */
88 init_hckernel_mutex();
92 if (!afs_osicred_initialized) {
93 #if defined(AFS_DARWIN80_ENV)
94 afs_osi_ctxtp_initialized = 0;
95 afs_osi_ctxtp = NULL; /* initialized in afs_Daemon since it has
96 a proc reference that cannot be changed */
98 #if defined(AFS_XBSD_ENV)
99 /* Can't just invent one, must use crget() because of mutex */
101 crdup(osi_curcred());
102 #elif defined(AFS_SUN5_ENV)
103 afs_osi_credp = kcred;
105 memset(&afs_osi_cred, 0, sizeof(afs_ucred_t));
106 #if defined(AFS_LINUX26_ENV)
107 afs_set_cr_group_info(&afs_osi_cred, groups_alloc(0));
109 #if defined(AFS_DARWIN80_ENV)
110 afs_osi_cred.cr_ref = 1; /* kauth_cred_get_ref needs 1 existing ref */
112 # if !(defined(AFS_LINUX26_ENV) && defined(STRUCT_TASK_STRUCT_HAS_CRED))
113 crhold(&afs_osi_cred); /* don't let it evaporate */
117 afs_osi_credp = &afs_osi_cred;
119 afs_osicred_initialized = 1;
122 osi_flid.fl_pid = osi_flid.fl_sysid = 0;
125 init_et_to_sys_error();
128 /* mask signals in afsds */
130 afs_osi_MaskSignals(void)
132 #ifdef AFS_LINUX22_ENV
137 /* unmask signals in rxk listener */
139 afs_osi_UnmaskRxkSignals(void)
141 #ifdef AFS_LINUX22_ENV
142 osi_linux_unmaskrxk();
146 /* Two hacks to try and fix afsdb */
148 afs_osi_MaskUserLoop(void)
150 #ifdef AFS_DARWIN_ENV
152 afs_osi_fullSigMask();
154 afs_osi_MaskSignals();
159 afs_osi_UnmaskUserLoop(void)
161 #ifdef AFS_DARWIN_ENV
162 afs_osi_fullSigRestore();
166 /* register rxk listener proc info */
168 afs_osi_RxkRegister(void)
172 /* procedure for making our processes as invisible as we can */
174 afs_osi_Invisible(void)
176 #ifdef AFS_LINUX22_ENV
177 afs_osi_MaskSignals();
178 #elif defined(AFS_SUN5_ENV)
179 curproc->p_flag |= SSYS;
180 #elif defined(AFS_HPUX101_ENV) && !defined(AFS_HPUX1123_ENV)
181 set_system_proc(u.u_procp);
182 #elif defined(AFS_DARWIN80_ENV)
183 #elif defined(AFS_DARWIN_ENV)
184 /* maybe call init_process instead? */
185 current_proc()->p_flag |= P_SYSTEM;
186 #elif defined(AFS_NBSD50_ENV)
187 /* XXX in netbsd a system thread is more than invisible */
188 #elif defined(AFS_XBSD_ENV)
189 curproc->p_flag |= P_SYSTEM;
190 #elif defined(AFS_SGI_ENV)
194 AFS_STATCNT(osi_Invisible);
198 afs_osi_Visible(void)
200 #if defined(AFS_SUN5_ENV)
201 curproc->p_flag &= ~SSYS;
202 #elif defined(AFS_DARWIN80_ENV)
203 #elif defined(AFS_DARWIN_ENV)
204 /* maybe call init_process instead? */
205 current_proc()->p_flag &= ~P_SYSTEM;
206 #elif defined(AFS_NBSD50_ENV)
207 /* XXX in netbsd a system thread is more than invisible */
208 #elif defined(AFS_XBSD_ENV)
209 curproc->p_flag &= ~P_SYSTEM;
216 AFS_STATCNT(shutdown_osi);
217 #ifdef AFS_DARWIN80_ENV
218 if (afs_osi_ctxtp_initialized && afs_osi_ctxtp) {
219 vfs_context_rele(afs_osi_ctxtp);
220 afs_osi_ctxtp = NULL;
221 afs_osi_ctxtp_initialized = 0;
224 #if !defined(AFS_HPUX_ENV) && !defined(UKERNEL) && !defined(AFS_DFBSD_ENV) && !defined(AFS_LINUX26_ENV)
225 /* LINUX calls this from afs_cleanup() which hooks into module_exit */
228 if (afs_cold_shutdown) {
229 LOCK_INIT(&afs_ftf, "afs_ftf");
233 #if !defined(AFS_HPUX_ENV) && !defined(UKERNEL) && !defined(AFS_DFBSD_ENV) && !defined(AFS_DARWIN_ENV)
234 /* DARWIN uses locking, and so must provide its own */
236 shutdown_osisleep(void)
241 for (i=0;i<AFS_EVHASHSIZE;i++) {
242 while ((tmp = afs_evhasht[i]) != NULL) {
243 afs_evhasht[i] = tmp->next;
244 if (tmp->refcount > 0) {
245 afs_warn("nonzero refcount in shutdown_osisleep()\n");
247 #if defined(AFS_AIX_ENV)
249 #elif defined(AFS_FBSD_ENV)
250 afs_osi_Free(tmp, sizeof(*tmp));
251 #elif defined(AFS_SGI_ENV) || defined(AFS_XBSD_ENV) || defined(AFS_SUN5_ENV)
252 osi_FreeSmallSpace(tmp);
253 #elif defined(AFS_LINUX26_ENV)
255 #elif defined(AFS_LINUX20_ENV)
264 #if !defined(AFS_OBSD_ENV) && !defined(AFS_NBSD40_ENV)
266 afs_osi_suser(void *cr)
268 #if defined(AFS_SUN510_ENV)
269 return (priv_policy(cr, PRIV_SYS_SUSER_COMPAT, B_FALSE, EPERM, NULL) == 0);
270 #elif defined(AFS_SUN5_ENV)
271 return afs_suser(cr);
273 return afs_suser(NULL);