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 implementation.
15 #ifndef OSI_MACHDEP_H_
16 #define OSI_MACHDEP_H_
18 #include <linux/version.h>
19 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
20 #define AFS_LINUX26_ONEGROUP_ENV 1
23 /* Only needed for xdr.h in glibc 2.1.x */
25 #define quad_t __quad_t
26 #define u_quad_t __u_quad_t
31 #ifdef STRUCT_TASK_STRUCT_HAS_TGID
32 #define getpid() current->tgid
33 #ifdef STRUCT_TASK_STRUCT_HAS_REAL_PARENT
34 #define getppid() current->real_parent->tgid
35 #elif defined(STRUCT_TASK_STRUCT_HAS_PARENT)
36 #define getppid() current->parent->tgid
38 #define getppid() current->p_opptr->tgid
40 #else /* !STRUCT_TASK_STRUCT_HAS_TGID */
41 #define getpid() current->pid
42 #ifdef STRUCT_TASK_STRUCT_HAS_REAL_PARENT
43 #define getppid() current->real_parent->pid
44 #elif defined(STRUCT_TASK_STRUCT_HAS_PARENT)
45 #define getppid() current->parent->pid
47 #define getppid() current->p_opptr->pid
49 #endif /* STRUCT_TASK_STRUCT_HAS_TGID */
51 #ifdef RECALC_SIGPENDING_TAKES_VOID
52 #define RECALC_SIGPENDING(X) recalc_sigpending()
54 #define RECALC_SIGPENDING(X) recalc_sigpending(X)
57 #if defined (STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK)
58 #define SIG_LOCK(X) spin_lock_irq(&X->sigmask_lock)
59 #define SIG_UNLOCK(X) spin_unlock_irq(&X->sigmask_lock)
60 #elif defined (STRUCT_TASK_STRUCT_HAS_SIGHAND)
61 #define SIG_LOCK(X) spin_lock_irq(&X->sighand->siglock)
62 #define SIG_UNLOCK(X) spin_unlock_irq(&X->sighand->siglock)
64 #define SIG_LOCK(X) spin_lock_irq(&X->sig->siglock)
65 #define SIG_UNLOCK(X) spin_unlock_irq(&X->sig->siglock)
68 #if defined (STRUCT_TASK_STRUCT_HAS_RLIM)
69 #define TASK_STRUCT_RLIM rlim
70 #elif defined (STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM)
71 #define TASK_STRUCT_RLIM signal->rlim
73 #error Not sure what to do about rlim (should be in the Linux task struct somewhere....)
79 #if defined(HAVE_CURRENT_KERNEL_TIME)
80 static inline time_t osi_Time(void) {
81 struct timespec xtime;
82 xtime = current_kernel_time();
86 #define osi_Time() (xtime.tv_sec)
91 #ifdef AFS_LINUX_64BIT_KERNEL
92 #define osi_GetTime(V) \
94 struct timeval __afs_tv; \
95 do_gettimeofday(&__afs_tv); \
96 (V)->tv_sec = (afs_int32)__afs_tv.tv_sec; \
97 (V)->tv_usec = (afs_int32)__afs_tv.tv_usec; \
100 #define osi_GetTime(V) do_gettimeofday((V))
103 #undef gop_lookupname
104 #define gop_lookupname osi_lookupname
106 #undef gop_lookupname_user
107 #define gop_lookupname_user osi_lookupname
109 #define osi_vnhold(V, N) do { VN_HOLD(AFSTOV(V)); } while (0)
110 #define VN_HOLD(V) osi_Assert(igrab((V)) == (V))
111 #define VN_RELE(V) iput((V))
113 #define afs_suser(x) capable(CAP_SYS_ADMIN)
114 #define wakeup afs_osi_Wakeup
116 #define vType(V) ((AFSTOV((V)))->i_mode & S_IFMT)
117 #define vSetType(V, type) AFSTOV((V))->i_mode = ((type) | (AFSTOV((V))->i_mode & ~S_IFMT)) /* preserve mode */
118 #define vSetVfsp(V, vfsp) /* unused */
119 #define IsAfsVnode(V) ((V)->i_sb == afs_globalVFS) /* test superblock instead */
120 #define SetAfsVnode(V) /* unnecessary */
122 /* We often need to pretend we're in user space to get memory transfers
123 * right for the kernel calls we use.
125 #include <asm/uaccess.h>
127 #ifdef KERNEL_SPACE_DECL
128 #undef KERNEL_SPACE_DECL
130 #undef TO_KERNEL_SPACE
132 #define KERNEL_SPACE_DECL mm_segment_t _fs_space_decl={0}
133 #define TO_USER_SPACE() { _fs_space_decl = get_fs(); set_fs(get_ds()); }
134 #define TO_KERNEL_SPACE() set_fs(_fs_space_decl)
136 #define copyin(F, T, C) (copy_from_user ((char*)(T), (char*)(F), (C)) > 0 ? EFAULT : 0)
137 static inline long copyinstr(char *from, char *to, int count, int *length) {
139 tmp = strncpy_from_user(to, from, count);
145 #define copyout(F, T, C) (copy_to_user ((char*)(T), (char*)(F), (C)) > 0 ? EFAULT : 0)
147 /* kernel print statements */
148 #define printf printk
149 #define uprintf printk
153 #define NGROUPS NGROUPS_SMALL
157 typedef struct afs_cred { /* maps to task field: */
159 uid_t cr_uid; /* euid */
160 uid_t cr_ruid; /* uid */
161 gid_t cr_gid; /* egid */
162 gid_t cr_rgid; /* gid */
163 struct group_info *cr_group_info;
166 typedef struct afs_cred afs_ucred_t;
167 typedef struct task_struct afs_proc_t;
169 #if !defined(current_cred)
170 #define current_gid() (current->gid)
171 #define current_uid() (current->uid)
172 #define current_fsgid() (current->fsgid)
173 #define current_fsuid() (current->fsuid)
175 #if defined(STRUCT_TASK_HAS_CRED)
176 #define current_group_info() (current->cred->group_info)
177 #define task_gid(task) (task->cred->gid)
178 #define task_user(task) (task->cred->user)
179 #define task_session_keyring(task) (task->cred->tgcred->session_keyring)
180 #define current_session_keyring() (current->cred->tgcred->session_keyring)
182 #define current_group_info() (current->group_info)
183 #if !defined(task_gid)
184 #define task_gid(task) (task->gid)
186 #if !defined(task_uid)
187 #define task_uid(task) (task->uid)
189 #define task_user(task) (task->user)
190 #define task_session_keyring(task) (task->signal->session_keyring)
191 #define current_session_keyring() (current->signal->session_keyring)
193 #define crhold(c) (c)->cr_ref++
195 /* UIO manipulation */
196 typedef enum { AFS_UIOSYS, AFS_UIOUSER } uio_seg_t;
197 typedef enum { UIO_READ, UIO_WRITE } uio_flag_t;
199 struct iovec *uio_iov;
201 afs_offs_t uio_offset;
206 #define afsio_iov uio_iov
207 #define afsio_iovcnt uio_iovcnt
208 #define afsio_offset uio_offset
209 #define afsio_seg uio_segflg
210 #define afsio_fmode uio_fmode
211 #define afsio_resid uio_resid
213 /* Get/set the inode in the osifile struct. */
214 #define FILE_INODE(F) (F)->f_dentry->d_inode
216 #define OSIFILE_INODE(a) FILE_INODE((a)->filp)
218 #if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
222 #if defined(__KERNEL__)
223 #include <linux/version.h>
224 #include <linux/sched.h>
225 #include <linux/wait.h>
227 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
228 extern struct mutex afs_global_lock;
230 extern struct semaphore afs_global_lock;
231 #define mutex_lock(lock) down(lock)
232 #define mutex_unlock(lock) up(lock)
234 extern int afs_global_owner;
236 #define AFS_GLOCK() \
238 mutex_lock(&afs_global_lock); \
239 if (afs_global_owner) \
240 osi_Panic("afs_global_lock already held by pid %d", \
242 afs_global_owner = current->pid; \
245 #define ISAFS_GLOCK() (afs_global_owner == current->pid)
247 #define AFS_GUNLOCK() \
249 if (!ISAFS_GLOCK()) \
250 osi_Panic("afs global lock not held at %s:%d", __FILE__, __LINE__); \
251 afs_global_owner = 0; \
252 mutex_unlock(&afs_global_lock); \
256 #define AFS_GUNLOCK()
257 #define ISAFS_GLOCK() 1
258 #define AFS_ASSERT_GLOCK()
261 #ifdef AFS_AMD64_LINUX20_ENV
262 /* RHEL5 beta's kernel doesn't define these. They aren't gonna change, so... */
264 #ifndef __NR_ia32_afs_syscall
265 #define __NR_ia32_afs_syscall 137
267 #ifndef __NR_ia32_setgroups
268 #define __NR_ia32_setgroups 81
270 #ifndef __NR_ia32_setgroups32
271 #define __NR_ia32_setgroups32 206
273 #ifndef __NR_ia32_close
274 #define __NR_ia32_close 6
276 #ifndef __NR_ia32_chdir
277 #define __NR_ia32_chdir 12
279 #ifndef __NR_ia32_break
280 #define __NR_ia32_break 17
282 #ifndef __NR_ia32_stty
283 #define __NR_ia32_stty 31
285 #ifndef __NR_ia32_gtty
286 #define __NR_ia32_gtty 32
288 #ifndef __NR_ia32_ftime
289 #define __NR_ia32_ftime 35
291 #ifndef __NR_ia32_prof
292 #define __NR_ia32_prof 44
294 #ifndef __NR_ia32_lock
295 #define __NR_ia32_lock 53
297 #ifndef __NR_ia32_mpx
298 #define __NR_ia32_mpx 56
300 #ifndef __NR_ia32_exit
301 #define __NR_ia32_exit 1
303 #ifndef __NR_ia32_mount
304 #define __NR_ia32_mount 21
306 #ifndef __NR_ia32_read
307 #define __NR_ia32_read 3
309 #ifndef __NR_ia32_write
310 #define __NR_ia32_write 4
312 #ifndef __NR_ia32_open
313 #define __NR_ia32_open 5
315 #ifndef __NR_ia32_close
316 #define __NR_ia32_close 6
318 #ifndef __NR_ia32_unlink
319 #define __NR_ia32_unlink 10
323 #endif /* OSI_MACHDEP_H_ */