SPL_AC_ATOMIC_SPINLOCK
SPL_AC_SHRINKER_CALLBACK
SPL_AC_CTL_NAME
+ SPL_AC_CONFIG_TRIM_UNUSED_KSYMS
SPL_AC_PDE_DATA
SPL_AC_SET_FS_PWD_WITH_CONST
SPL_AC_2ARGS_VFS_UNLINK
SPL_AC_INODE_TRUNCATE_RANGE
SPL_AC_FS_STRUCT_SPINLOCK
SPL_AC_KUIDGID_T
- SPL_AC_PUT_TASK_STRUCT
SPL_AC_KERNEL_FALLOCATE
SPL_AC_CONFIG_ZLIB_INFLATE
SPL_AC_CONFIG_ZLIB_DEFLATE
SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
SPL_AC_SHRINK_CONTROL_STRUCT
SPL_AC_RWSEM_SPINLOCK_IS_RAW
+ SPL_AC_RWSEM_ACTIVITY
+ SPL_AC_RWSEM_ATOMIC_LONG_COUNT
SPL_AC_SCHED_RT_HEADER
+ SPL_AC_SCHED_SIGNAL_HEADER
+ SPL_AC_4ARGS_VFS_GETATTR
+ SPL_AC_3ARGS_VFS_GETATTR
SPL_AC_2ARGS_VFS_GETATTR
SPL_AC_USLEEP_RANGE
SPL_AC_KMEM_CACHE_ALLOCFLAGS
SPL_AC_WAIT_ON_BIT
+ SPL_AC_INODE_LOCK
+ SPL_AC_GROUP_INFO_GID
+ SPL_AC_KMEM_CACHE_CREATE_USERCOPY
+ SPL_AC_WAIT_QUEUE_ENTRY_T
+ SPL_AC_WAIT_QUEUE_HEAD_ENTRY
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
if test "$kernelsrc" = "NONE"; then
kernsrcver=NONE
fi
+ withlinux=yes
fi
AC_MSG_RESULT([$kernelsrc])
AC_MSG_CHECKING([kernel build directory])
if test -z "$kernelbuild"; then
- if test -e "/lib/modules/$(uname -r)/build"; then
+ if test x$withlinux != xyes -a -e "/lib/modules/$(uname -r)/build"; then
kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then
kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
])
])
-dnl #
-dnl # 2.6.39 API change,
-dnl # __put_task_struct() was exported by the mainline kernel.
-dnl #
-AC_DEFUN([SPL_AC_PUT_TASK_STRUCT],
- [AC_MSG_CHECKING([whether __put_task_struct() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/sched.h>
- ], [
- __put_task_struct(NULL);
- ], [__put_task_struct], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1,
- [__put_task_struct() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
dnl #
dnl # 2.6.35 API change,
dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype.
])
])
+dnl #
+dnl # config trim unused symbols,
+dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS DISABLED.
+dnl #
+AC_DEFUN([SPL_AC_CONFIG_TRIM_UNUSED_KSYMS], [
+ AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled])
+ SPL_LINUX_TRY_COMPILE([
+ #if defined(CONFIG_TRIM_UNUSED_KSYMS)
+ #error CONFIG_TRIM_UNUSED_KSYMS not defined
+ #endif
+ ],[ ],[
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([
+ *** This kernel has unused symbols trimming enabled, please disable.
+ *** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.])
+ ])
+])
+
dnl #
dnl # 2.6.39 API compat,
dnl # The function zlib_deflate_workspacesize() now take 2 arguments.
#include <linux/rwsem.h>
],[
struct rw_semaphore dummy_semaphore __attribute__ ((unused));
- raw_spinlock_t dummy_lock __attribute__ ((unused));
+ raw_spinlock_t dummy_lock __attribute__ ((unused)) =
+ __RAW_SPIN_LOCK_INITIALIZER(dummy_lock);
dummy_semaphore.wait_lock = dummy_lock;
],[
AC_MSG_RESULT(yes)
EXTRA_KCFLAGS="$tmp_flags"
])
+dnl #
+dnl # 3.16 API Change
+dnl #
+dnl # rwsem-spinlock "->activity" changed to "->count"
+dnl #
+AC_DEFUN([SPL_AC_RWSEM_ACTIVITY], [
+ AC_MSG_CHECKING([whether struct rw_semaphore has member activity])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/rwsem.h>
+ ],[
+ struct rw_semaphore dummy_semaphore __attribute__ ((unused));
+ dummy_semaphore.activity = 0;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1,
+ [struct rw_semaphore has member activity])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
+dnl #
+dnl # 4.8 API Change
+dnl #
+dnl # rwsem "->count" changed to atomic_long_t type
+dnl #
+AC_DEFUN([SPL_AC_RWSEM_ATOMIC_LONG_COUNT], [
+ AC_MSG_CHECKING(
+ [whether struct rw_semaphore has atomic_long_t member count])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/rwsem.h>
+ ],[
+ DECLARE_RWSEM(dummy_semaphore);
+ (void) atomic_long_read(&dummy_semaphore.count);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1,
+ [struct rw_semaphore has atomic_long_t member count])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
dnl #
dnl # 3.9 API change,
dnl # Moved things from linux/sched.h to linux/sched/rt.h
])
dnl #
-dnl # 3.9 API change,
-dnl # vfs_getattr() uses 2 args
-dnl # It takes struct path * instead of struct vfsmount * and struct dentry *
+dnl # 4.11 API change,
+dnl # Moved things from linux/sched.h to linux/sched/signal.h
+dnl #
+AC_DEFUN([SPL_AC_SCHED_SIGNAL_HEADER],
+ [AC_MSG_CHECKING([whether header linux/sched/signal.h exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/sched.h>
+ #include <linux/sched/signal.h>
+ ],[
+ return 0;
+ ],[
+ AC_DEFINE(HAVE_SCHED_SIGNAL_HEADER, 1, [linux/sched/signal.h exists])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # 4.11 API, a528d35e@torvalds/linux
+dnl # vfs_getattr(const struct path *p, struct kstat *s, u32 m, unsigned int f)
+dnl #
+AC_DEFUN([SPL_AC_4ARGS_VFS_GETATTR], [
+ AC_MSG_CHECKING([whether vfs_getattr() wants 4 args])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_getattr((const struct path *)NULL,
+ (struct kstat *)NULL,
+ (u32)0,
+ (unsigned int)0);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_4ARGS_VFS_GETATTR, 1,
+ [vfs_getattr wants 4 args])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # 3.9 API
+dnl # vfs_getattr(struct path *p, struct kstat *s)
dnl #
AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [
- AC_MSG_CHECKING([whether vfs_getattr() wants])
+ AC_MSG_CHECKING([whether vfs_getattr() wants 2 args])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
vfs_getattr((struct path *) NULL,
(struct kstat *)NULL);
],[
- AC_MSG_RESULT(2 args)
+ AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1,
- [vfs_getattr wants 2 args])
+ [vfs_getattr wants 2 args])
],[
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- vfs_getattr((struct vfsmount *)NULL,
- (struct dentry *)NULL,
- (struct kstat *)NULL);
- ],[
- AC_MSG_RESULT(3 args)
- ],[
- AC_MSG_ERROR(unknown)
- ])
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # <3.9 API
+dnl # vfs_getattr(struct vfsmount *v, struct dentry *d, struct kstat *k)
+dnl #
+AC_DEFUN([SPL_AC_3ARGS_VFS_GETATTR], [
+ AC_MSG_CHECKING([whether vfs_getattr() wants 3 args])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_getattr((struct vfsmount *)NULL,
+ (struct dentry *)NULL,
+ (struct kstat *)NULL);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_3ARGS_VFS_GETATTR, 1,
+ [vfs_getattr wants 3 args])
+ ],[
+ AC_MSG_RESULT(no)
])
])
AC_MSG_RESULT(no)
])
])
+
+dnl #
+dnl # 4.7 API change
+dnl # i_mutex is changed to i_rwsem. Instead of directly using
+dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared()
+dnl # We test inode_lock_shared because inode_lock is introduced earlier.
+dnl #
+AC_DEFUN([SPL_AC_INODE_LOCK], [
+ AC_MSG_CHECKING([whether inode_lock_shared() exists])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ struct inode *inode = NULL;
+ inode_lock_shared(inode);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
+dnl #
+dnl # 4.9 API change
+dnl # group_info changed from 2d array via >blocks to 1d array via ->gid
+dnl #
+AC_DEFUN([SPL_AC_GROUP_INFO_GID], [
+ AC_MSG_CHECKING([whether group_info->gid exists])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/cred.h>
+ ],[
+ struct group_info *gi = groups_alloc(1);
+ gi->gid[0] = KGIDT_INIT(0);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_GROUP_INFO_GID, 1, [group_info->gid exists])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
+dnl #
+dnl # grsecurity API change,
+dnl # kmem_cache_create() with SLAB_USERCOPY flag replaced by
+dnl # kmem_cache_create_usercopy().
+dnl #
+AC_DEFUN([SPL_AC_KMEM_CACHE_CREATE_USERCOPY], [
+ AC_MSG_CHECKING([whether kmem_cache_create_usercopy() exists])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/slab.h>
+ static void ctor(void *foo)
+ {
+ // fake ctor
+ }
+ ],[
+ struct kmem_cache *skc_linux_cache;
+ const char *name = "test";
+ size_t size = 4096;
+ size_t align = 8;
+ unsigned long flags = 0;
+ size_t useroffset = 0;
+ size_t usersize = size - useroffset;
+
+ skc_linux_cache = kmem_cache_create_usercopy(
+ name, size, align, flags, useroffset, usersize, ctor);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_KMEM_CACHE_CREATE_USERCOPY, 1,
+ [kmem_cache_create_usercopy() exists])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
+dnl #
+dnl # 4.13 API change
+dnl # Renamed struct wait_queue -> struct wait_queue_entry.
+dnl #
+AC_DEFUN([SPL_AC_WAIT_QUEUE_ENTRY_T], [
+ AC_MSG_CHECKING([whether wait_queue_entry_t exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/wait.h>
+ ],[
+ wait_queue_entry_t *entry __attribute__ ((unused));
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_T, 1,
+ [wait_queue_entry_t exists])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # 4.13 API change
+dnl # Renamed wait_queue_head::task_list -> wait_queue_head::head
+dnl # Renamed wait_queue_entry::task_list -> wait_queue_entry::entry
+dnl #
+AC_DEFUN([SPL_AC_WAIT_QUEUE_HEAD_ENTRY], [
+ AC_MSG_CHECKING([whether wq_head->head and wq_entry->entry exist])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/wait.h>
+
+ #ifdef HAVE_WAIT_QUEUE_ENTRY_T
+ typedef wait_queue_head_t spl_wait_queue_head_t;
+ typedef wait_queue_entry_t spl_wait_queue_entry_t;
+ #else
+ typedef wait_queue_head_t spl_wait_queue_head_t;
+ typedef wait_queue_t spl_wait_queue_entry_t;
+ #endif
+ ],[
+ spl_wait_queue_head_t wq_head;
+ spl_wait_queue_entry_t wq_entry;
+ struct list_head *head __attribute__ ((unused));
+ struct list_head *entry __attribute__ ((unused));
+
+ head = &wq_head.head;
+ entry = &wq_entry.entry;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_WAIT_QUEUE_HEAD_ENTRY, 1,
+ [wq_head->head and wq_entry->entry exist])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
projects / mirror_spl-debian.git / blobdiff