4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
41 #include <sys/types.h>
48 #include "syscall_AIX.h"
50 #include <sys/syscall.h>
52 #include <sys/utsname.h>
53 #ifdef HAVE_NETINET_IN_H
54 #include <netinet/in.h>
56 #include <sys/socket.h>
57 #ifdef HAVE_ARPA_INET_H
58 #include <arpa/inet.h>
65 struct task_struct *current;
67 void *inter_module_get(char *arg)
69 if (!strcmp(arg, "ldlm_cli_cancel_unused"))
70 return ldlm_cli_cancel_unused;
71 else if (!strcmp(arg, "ldlm_namespace_cleanup"))
72 return ldlm_namespace_cleanup;
73 else if (!strcmp(arg, "ldlm_replay_locks"))
74 return ldlm_replay_locks;
80 * random number generator stuff
83 #ifdef HAVE_GETHOSTBYNAME
84 static int get_ipv4_addr()
86 struct utsname myname;
90 if (uname(&myname) < 0)
93 hptr = gethostbyname(myname.nodename);
95 hptr->h_addrtype != AF_INET ||
96 *hptr->h_addr_list == NULL) {
97 CWARN("Warning: fail to get local IPv4 address\n");
101 ip = ntohl(*((int *) *hptr->h_addr_list));
107 void liblustre_init_random()
112 #ifdef LIBLUSTRE_USE_URANDOM
114 _rand_dev_fd = syscall(SYS_open, "/dev/urandom", O_RDONLY);
115 if (_rand_dev_fd >= 0) {
116 if (syscall(SYS_read, _rand_dev_fd,
117 &seed, sizeof(seed)) == sizeof(seed)) {
118 cfs_srand(seed[0], seed[1]);
119 syscall(SYS_close, _rand_dev_fd);
122 syscall(SYS_close, _rand_dev_fd);
124 #endif /* LIBLUSTRE_USE_URANDOM */
126 #ifdef HAVE_GETHOSTBYNAME
127 seed[0] = get_ipv4_addr();
131 gettimeofday(&tv, NULL);
132 cfs_srand(tv.tv_sec ^ __swab32(seed[0]), tv.tv_usec ^__swab32(getpid()));
135 static void init_capability(__u32 *res)
139 cap_flag_value_t capval;
144 syscap = cap_get_proc();
146 CWARN("Warning: failed to get system capability, "
151 for (i = 0; i < sizeof(cap_value_t) * 8; i++) {
152 if (!cap_get_flag(syscap, i, CAP_EFFECTIVE, &capval)) {
153 if (capval == CAP_SET) {
160 * set fake cap flags to ship to linux server
161 * from client platforms that have none (eg. catamount)
162 * full capability for root
163 * no capability for anybody else
165 #define FAKE_ROOT_CAP 0x1ffffeff
166 #define FAKE_USER_CAP 0
168 *res = (current->fsuid == 0) ? FAKE_ROOT_CAP: FAKE_USER_CAP;
172 int cfs_curproc_is_in_groups(gid_t gid)
176 if (gid == current->fsgid)
179 for (i = 0; i < current->ngroups; i++) {
180 if (gid == current->groups[i])
187 int liblustre_init_current(char *comm)
189 current = malloc(sizeof(*current));
191 CERROR("Not enough memory\n");
195 strncpy(current->comm, comm, sizeof(current->comm));
196 current->pid = getpid();
197 current->gid = getgid();
198 current->fsuid = geteuid();
199 current->fsgid = getegid();
200 memset(¤t->pending, 0, sizeof(current->pending));
202 current->max_groups = sysconf(_SC_NGROUPS_MAX);
203 current->groups = malloc(sizeof(gid_t) * current->max_groups);
204 if (!current->groups) {
205 CERROR("Not enough memory\n");
208 current->ngroups = getgroups(current->max_groups, current->groups);
209 if (current->ngroups < 0) {
210 perror("Error getgroups");
214 init_capability(¤t->cap_effective);
219 void cfs_cap_raise(cfs_cap_t cap)
221 current->cap_effective |= (1 << cap);
224 void cfs_cap_lower(cfs_cap_t cap)
226 current->cap_effective &= ~(1 << cap);
229 int cfs_cap_raised(cfs_cap_t cap)
231 return current->cap_effective & (1 << cap);
234 cfs_cap_t cfs_curproc_cap_pack(void) {
235 return cfs_current()->cap_effective;
238 void cfs_curproc_cap_unpack(cfs_cap_t cap) {
239 cfs_current()->cap_effective = cap;
242 int cfs_capable(cfs_cap_t cap)
244 return cfs_cap_raised(cap);
247 int init_lib_portals()
252 rc = libcfs_debug_init(5 * 1024 * 1024);
254 CERROR("libcfs_debug_init() failed: %d\n", rc);
260 CERROR("LNetInit() failed: %d\n", rc);
266 extern void ptlrpc_exit_portals(void);
267 void cleanup_lib_portals()
269 libcfs_debug_cleanup();
270 ptlrpc_exit_portals();