2 * Copyright 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
11 * Linux support routines.
14 #include <afsconfig.h>
15 #include "afs/param.h"
18 #include <linux/module.h> /* early to avoid printf->printk mapping */
19 #include <linux/dcache.h>
20 #include <linux/namei.h>
21 #include <linux/kthread.h>
22 #include "afs/sysincludes.h"
23 #include "afsincludes.h"
24 #include "afs/afs_stats.h"
26 #include "osi_compat.h"
28 int afs_osicred_initialized = 0;
29 afs_ucred_t afs_osi_cred;
32 afs_osi_SetTime(osi_timeval_t * tvp)
35 tv.tv_sec = tvp->tv_sec;
36 tv.tv_nsec = tvp->tv_usec * NSEC_PER_USEC;
38 AFS_STATCNT(osi_SetTime);
47 sigfillset(¤t->blocked);
48 RECALC_SIGPENDING(current);
52 /* LOOKUP_POSITIVE is becoming the default */
53 #ifndef LOOKUP_POSITIVE
54 #define LOOKUP_POSITIVE 0
56 /* Lookup name and return vnode for same. */
58 osi_lookupname_internal(char *aname, int followlink, struct vfsmount **mnt,
62 #if defined(HAVE_LINUX_PATH_LOOKUP)
63 struct nameidata path_data;
65 afs_linux_path_t path_data;
67 int flags = LOOKUP_POSITIVE;
70 flags |= LOOKUP_FOLLOW;
71 code = afs_kern_path(aname, flags, &path_data);
74 afs_get_dentry_ref(&path_data, mnt, dpp);
80 afs_getname(char *aname)
83 char *name = kmem_cache_alloc(names_cachep, GFP_KERNEL);
86 return ERR_PTR(-ENOMEM);
88 len = strncpy_from_user(name, aname, PATH_MAX);
91 if (len >= PATH_MAX) {
98 kmem_cache_free(names_cachep, name);
103 afs_putname(char *name)
105 kmem_cache_free(names_cachep, name);
109 osi_lookupname(char *aname, uio_seg_t seg, int followlink,
115 if (seg == AFS_UIOUSER) {
116 name = afs_getname(aname);
118 return -PTR_ERR(name);
122 code = osi_lookupname_internal(name, followlink, NULL, dpp);
123 if (seg == AFS_UIOUSER) {
129 int osi_abspath(char *aname, char *buf, int buflen,
130 int followlink, char **pathp)
132 struct dentry *dp = NULL;
133 struct vfsmount *mnt = NULL;
137 name = afs_getname(aname);
139 return -PTR_ERR(name);
140 code = osi_lookupname_internal(name, followlink, &mnt, &dp);
142 #if defined(D_PATH_TAKES_STRUCT_PATH)
143 afs_linux_path_t p = { .mnt = mnt, .dentry = dp };
144 path = d_path(&p, buf, buflen);
146 path = d_path(dp, mnt, buf, buflen);
150 code = -PTR_ERR(path);
164 /* This could use some work, and support on more platforms. */
165 int afs_thread_wrapper(void *rock)
167 void (*proc)(void) = rock;
168 __module_get(THIS_MODULE);
172 module_put(THIS_MODULE);
176 void afs_start_thread(void (*proc)(void), char *name)
178 kthread_run(afs_thread_wrapper, proc, "%s", name);