diff options
| -rw-r--r-- | config/kernel-ctl-table-name.m4 | 18 | ||||
| -rw-r--r-- | config/kernel-fallocate.m4 | 68 | ||||
| -rw-r--r-- | config/kernel-group-info.m4 | 21 | ||||
| -rw-r--r-- | config/kernel-inode-lock.m4 | 23 | ||||
| -rw-r--r-- | config/kernel-kmem-cache.m4 | 72 | ||||
| -rw-r--r-- | config/kernel-kuidgid.m4 | 28 | ||||
| -rw-r--r-- | config/kernel-pde-data.m4 | 17 | ||||
| -rw-r--r-- | config/kernel-rw.m4 | 57 | ||||
| -rw-r--r-- | config/kernel-rwsem.m4 | 75 | ||||
| -rw-r--r-- | config/kernel-sched.m4 | 56 | ||||
| -rw-r--r-- | config/kernel-set-fs-pwd.m4 | 39 | ||||
| -rw-r--r-- | config/kernel-shrinker.m4 | 125 | ||||
| -rw-r--r-- | config/kernel-spinlock.m4 | 24 | ||||
| -rw-r--r-- | config/kernel-timer.m4 | 32 | ||||
| -rw-r--r-- | config/kernel-trim-unused-symbols.m4 | 19 | ||||
| -rw-r--r-- | config/kernel-truncate-range.m4 | 19 | ||||
| -rw-r--r-- | config/kernel-urange-sleep.m4 | 21 | ||||
| -rw-r--r-- | config/kernel-vfs-fsync.m4 | 17 | ||||
| -rw-r--r-- | config/kernel-vfs-getattr.m4 | 62 | ||||
| -rw-r--r-- | config/kernel-wait.m4 | 76 | ||||
| -rw-r--r-- | config/kernel-zlib.m4 | 63 | ||||
| -rw-r--r-- | config/spl-build.m4 | 956 |
22 files changed, 932 insertions, 956 deletions
diff --git a/config/kernel-ctl-table-name.m4 b/config/kernel-ctl-table-name.m4 new file mode 100644 index 000000000..8dd2e77cb --- /dev/null +++ b/config/kernel-ctl-table-name.m4 @@ -0,0 +1,18 @@ +dnl # +dnl # 2.6.33 API change, +dnl # Removed .ctl_name from struct ctl_table. +dnl # +AC_DEFUN([SPL_AC_CTL_NAME], [ + AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/sysctl.h> + ],[ + struct ctl_table ctl __attribute__ ((unused)); + ctl.ctl_name = 0; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-fallocate.m4 b/config/kernel-fallocate.m4 new file mode 100644 index 000000000..b8c82f464 --- /dev/null +++ b/config/kernel-fallocate.m4 @@ -0,0 +1,68 @@ +dnl # +dnl # Linux 2.6.38 - 3.x API +dnl # +AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [ + AC_MSG_CHECKING([whether fops->fallocate() exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; + struct file_operations fops __attribute__ ((unused)) = { + .fallocate = fallocate, + }; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) +dnl # +dnl # Linux 2.6.x - 2.6.37 API +dnl # +AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [ + AC_MSG_CHECKING([whether iops->fallocate() exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL; + struct inode_operations fops __attribute__ ((unused)) = { + .fallocate = fallocate, + }; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # PaX Linux 2.6.38 - 3.x API +dnl # +AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [ + AC_MSG_CHECKING([whether fops->fallocate() exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; + struct file_operations_no_const fops __attribute__ ((unused)) = { + .fallocate = fallocate, + }; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # The fallocate callback was moved from the inode_operations +dnl # structure to the file_operations structure. +dnl # +AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [ + SPL_AC_KERNEL_FILE_FALLOCATE + SPL_AC_KERNEL_INODE_FALLOCATE + SPL_AC_PAX_KERNEL_FILE_FALLOCATE +]) diff --git a/config/kernel-group-info.m4 b/config/kernel-group-info.m4 new file mode 100644 index 000000000..4db2bba5c --- /dev/null +++ b/config/kernel-group-info.m4 @@ -0,0 +1,21 @@ +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" +]) diff --git a/config/kernel-inode-lock.m4 b/config/kernel-inode-lock.m4 new file mode 100644 index 000000000..2cc06a5ec --- /dev/null +++ b/config/kernel-inode-lock.m4 @@ -0,0 +1,23 @@ +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" +]) diff --git a/config/kernel-kmem-cache.m4 b/config/kernel-kmem-cache.m4 new file mode 100644 index 000000000..50a7fdb4b --- /dev/null +++ b/config/kernel-kmem-cache.m4 @@ -0,0 +1,72 @@ +dnl # +dnl # 2.6.35 API change, +dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are +dnl # private allocation flags which are applied when allocating a new slab +dnl # in kmem_getpages(). Unfortunately there is no public API for setting +dnl # non-default flags. +dnl # +AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ + AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/slab.h> + ],[ + struct kmem_cache cachep __attribute__ ((unused)); + cachep.allocflags = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, + [struct kmem_cache has allocflags]) + ],[ + AC_MSG_RESULT(no) + + AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/slab.h> + ],[ + struct kmem_cache cachep __attribute__ ((unused)); + cachep.gfpflags = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1, + [struct kmem_cache has gfpflags]) + ],[ + AC_MSG_RESULT(no) + ]) + ]) +]) + +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" +]) diff --git a/config/kernel-kuidgid.m4 b/config/kernel-kuidgid.m4 new file mode 100644 index 000000000..47d193783 --- /dev/null +++ b/config/kernel-kuidgid.m4 @@ -0,0 +1,28 @@ +dnl # +dnl # User namespaces, use kuid_t in place of uid_t +dnl # where available. Not strictly a user namespaces thing +dnl # but it should prevent surprises +dnl # +AC_DEFUN([SPL_AC_KUIDGID_T], [ + AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/uidgid.h> + ], [ + kuid_t userid = KUIDT_INIT(0); + kgid_t groupid = KGIDT_INIT(0); + ],[ + SPL_LINUX_TRY_COMPILE([ + #include <linux/uidgid.h> + ], [ + kuid_t userid = 0; + kgid_t groupid = 0; + ],[ + AC_MSG_RESULT(yes; optional) + ],[ + AC_MSG_RESULT(yes; mandatory) + AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use]) + ]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-pde-data.m4 b/config/kernel-pde-data.m4 new file mode 100644 index 000000000..6aa5765c3 --- /dev/null +++ b/config/kernel-pde-data.m4 @@ -0,0 +1,17 @@ +dnl # +dnl # 3.10 API change, +dnl # PDE is replaced by PDE_DATA +dnl # +AC_DEFUN([SPL_AC_PDE_DATA], [ + AC_MSG_CHECKING([whether PDE_DATA() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include <linux/proc_fs.h> + ], [ + PDE_DATA(NULL); + ], [PDE_DATA], [], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-rw.m4 b/config/kernel-rw.m4 new file mode 100644 index 000000000..23c14b70f --- /dev/null +++ b/config/kernel-rw.m4 @@ -0,0 +1,57 @@ +dnl # +dnl # 4.14 API change +dnl # kernel_write() which was introduced in 3.9 was updated to take +dnl # the offset as a pointer which is needed by vn_rdwr(). +dnl # +AC_DEFUN([SPL_AC_KERNEL_WRITE], [ + AC_MSG_CHECKING([whether kernel_write() takes loff_t pointer]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + struct file *file = NULL; + const void *buf = NULL; + size_t count = 0; + loff_t *pos = NULL; + ssize_t ret; + + ret = kernel_write(file, buf, count, pos); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERNEL_WRITE_PPOS, 1, + [kernel_write() take loff_t pointer]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) + +dnl # +dnl # 4.14 API change +dnl # kernel_read() which has existed for forever was updated to take +dnl # the offset as a pointer which is needed by vn_rdwr(). +dnl # +AC_DEFUN([SPL_AC_KERNEL_READ], [ + AC_MSG_CHECKING([whether kernel_read() takes loff_t pointer]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + struct file *file = NULL; + void *buf = NULL; + size_t count = 0; + loff_t *pos = NULL; + ssize_t ret; + + ret = kernel_read(file, buf, count, pos); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERNEL_READ_PPOS, 1, + [kernel_read() take loff_t pointer]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) diff --git a/config/kernel-rwsem.m4 b/config/kernel-rwsem.m4 new file mode 100644 index 000000000..aee20ae90 --- /dev/null +++ b/config/kernel-rwsem.m4 @@ -0,0 +1,75 @@ +dnl # +dnl # 3.1 API Change +dnl # +dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to +dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. +dnl # +AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ + AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/rwsem.h> + ],[ + struct rw_semaphore dummy_semaphore __attribute__ ((unused)); + raw_spinlock_t dummy_lock __attribute__ ((unused)) = + __RAW_SPIN_LOCK_INITIALIZER(dummy_lock); + dummy_semaphore.wait_lock = dummy_lock; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, + [struct rw_semaphore member wait_lock is raw_spinlock_t]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$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" +]) diff --git a/config/kernel-sched.m4 b/config/kernel-sched.m4 new file mode 100644 index 000000000..5ae21676e --- /dev/null +++ b/config/kernel-sched.m4 @@ -0,0 +1,56 @@ +dnl # +dnl # 3.9 API change, +dnl # Moved things from linux/sched.h to linux/sched/rt.h +dnl # +AC_DEFUN([SPL_AC_SCHED_RT_HEADER], + [AC_MSG_CHECKING([whether header linux/sched/rt.h exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/sched.h> + #include <linux/sched/rt.h> + ],[ + return 0; + ],[ + AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists]) + AC_MSG_RESULT(yes) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +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 # 3.19 API change +dnl # The io_schedule_timeout() function is present in all 2.6.32 kernels +dnl # but it was not exported until Linux 3.19. The RHEL 7.x kernels which +dnl # are based on a 3.10 kernel do export this symbol. +dnl # +AC_DEFUN([SPL_AC_IO_SCHEDULE_TIMEOUT], [ + AC_MSG_CHECKING([whether io_schedule_timeout() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include <linux/sched.h> + ], [ + (void) io_schedule_timeout(1); + ], [io_schedule_timeout], [], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_IO_SCHEDULE_TIMEOUT, 1, [yes]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-set-fs-pwd.m4 b/config/kernel-set-fs-pwd.m4 new file mode 100644 index 000000000..849e7e6cb --- /dev/null +++ b/config/kernel-set-fs-pwd.m4 @@ -0,0 +1,39 @@ +dnl # +dnl # 3.9 API change +dnl # set_fs_pwd takes const struct path * +dnl # +AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST], + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/spinlock.h> + #include <linux/fs_struct.h> + #include <linux/path.h> + void (*const set_fs_pwd_func) + (struct fs_struct *, const struct path *) + = set_fs_pwd; + ],[ + return 0; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, + [set_fs_pwd() needs const path *]) + ],[ + SPL_LINUX_TRY_COMPILE([ + #include <linux/spinlock.h> + #include <linux/fs_struct.h> + #include <linux/path.h> + void (*const set_fs_pwd_func) + (struct fs_struct *, struct path *) + = set_fs_pwd; + ],[ + return 0; + ],[ + AC_MSG_RESULT(no) + ],[ + AC_MSG_ERROR(unknown) + ]) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) diff --git a/config/kernel-shrinker.m4 b/config/kernel-shrinker.m4 new file mode 100644 index 000000000..6fc9b5422 --- /dev/null +++ b/config/kernel-shrinker.m4 @@ -0,0 +1,125 @@ +AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + dnl # + dnl # 2.6.23 to 2.6.34 API change + dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) + dnl # + AC_MSG_CHECKING([whether old 2-argument shrinker exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/mm.h> + + int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); + ],[ + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, + [old shrinker callback wants 2 args]) + ],[ + AC_MSG_RESULT(no) + dnl # + dnl # 2.6.35 - 2.6.39 API change + dnl # ->shrink(struct shrinker *, + dnl # int nr_to_scan, gfp_t gfp_mask) + dnl # + AC_MSG_CHECKING([whether old 3-argument shrinker exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/mm.h> + + int shrinker_cb(struct shrinker *, int nr_to_scan, + gfp_t gfp_mask); + ],[ + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, + [old shrinker callback wants 3 args]) + ],[ + AC_MSG_RESULT(no) + dnl # + dnl # 3.0 - 3.11 API change + dnl # ->shrink(struct shrinker *, + dnl # struct shrink_control *sc) + dnl # + AC_MSG_CHECKING( + [whether new 2-argument shrinker exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/mm.h> + + int shrinker_cb(struct shrinker *, + struct shrink_control *sc); + ],[ + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1, + [new shrinker callback wants 2 args]) + ],[ + AC_MSG_RESULT(no) + dnl # + dnl # 3.12 API change, + dnl # ->shrink() is logically split in to + dnl # ->count_objects() and ->scan_objects() + dnl # + AC_MSG_CHECKING( + [whether ->count_objects callback exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/mm.h> + + unsigned long shrinker_cb( + struct shrinker *, + struct shrink_control *sc); + ],[ + struct shrinker cache_shrinker = { + .count_objects = shrinker_cb, + .scan_objects = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, + 1, [->count_objects exists]) + ],[ + AC_MSG_ERROR(error) + ]) + ]) + ]) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) + +dnl # +dnl # 2.6.39 API change, +dnl # Shrinker adjust to use common shrink_control structure. +dnl # +AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [ + AC_MSG_CHECKING([whether struct shrink_control exists]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/mm.h> + ],[ + struct shrink_control sc __attribute__ ((unused)); + + sc.nr_to_scan = 0; + sc.gfp_mask = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, + [struct shrink_control exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-spinlock.m4 b/config/kernel-spinlock.m4 new file mode 100644 index 000000000..136262d0e --- /dev/null +++ b/config/kernel-spinlock.m4 @@ -0,0 +1,24 @@ +dnl # +dnl # 2.6.36 API change, +dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to +dnl # a spinlock_t to improve the fastpath performance. +dnl # +AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ + AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/sched.h> + #include <linux/fs_struct.h> + ],[ + static struct fs_struct fs; + spin_lock_init(&fs.lock); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, + [struct fs_struct uses spinlock_t]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) diff --git a/config/kernel-timer.m4 b/config/kernel-timer.m4 new file mode 100644 index 000000000..93b5158b9 --- /dev/null +++ b/config/kernel-timer.m4 @@ -0,0 +1,32 @@ +dnl # +dnl # 4.15 API change +dnl # https://lkml.org/lkml/2017/11/25/90 +dnl # Check if timer_list.func get passed a timer_list or an unsigned long +dnl # (older kernels). Also sanity check the from_timer() and timer_setup() +dnl # macros are available as well, since they will be used in the same newer +dnl # kernels that support the new timer_list.func signature. +dnl # +AC_DEFUN([SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST], [ + AC_MSG_CHECKING([whether timer_list.function gets a timer_list]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include <linux/timer.h> + void task_expire(struct timer_list *tl) {} + ],[ + #ifndef from_timer + #error "No from_timer() macro" + #endif + + struct timer_list timer; + timer.function = task_expire; + timer_setup(&timer, NULL, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1, + [timer_list.function gets a timer_list]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) diff --git a/config/kernel-trim-unused-symbols.m4 b/config/kernel-trim-unused-symbols.m4 new file mode 100644 index 000000000..d1ac2f3c8 --- /dev/null +++ b/config/kernel-trim-unused-symbols.m4 @@ -0,0 +1,19 @@ +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.]) + ]) +]) diff --git a/config/kernel-truncate-range.m4 b/config/kernel-truncate-range.m4 new file mode 100644 index 000000000..4b1600b61 --- /dev/null +++ b/config/kernel-truncate-range.m4 @@ -0,0 +1,19 @@ +dnl # +dnl # 3.5 API change, +dnl # inode_operations.truncate_range removed +dnl # +AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [ + AC_MSG_CHECKING([whether truncate_range() inode operation is available]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + struct inode_operations ops; + ops.truncate_range = NULL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1, + [truncate_range() inode operation is available]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-urange-sleep.m4 b/config/kernel-urange-sleep.m4 new file mode 100644 index 000000000..85beca6dd --- /dev/null +++ b/config/kernel-urange-sleep.m4 @@ -0,0 +1,21 @@ +dnl # +dnl # 2.6.36 API compatibility. +dnl # Added usleep_range timer. +dnl # usleep_range is a finer precision implementation of msleep +dnl # designed to be a drop-in replacement for udelay where a precise +dnl # sleep / busy-wait is unnecessary. +dnl # +AC_DEFUN([SPL_AC_USLEEP_RANGE], [ + AC_MSG_CHECKING([whether usleep_range() is available]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/delay.h> + ],[ + usleep_range(0, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_USLEEP_RANGE, 1, + [usleep_range is available]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-vfs-fsync.m4 b/config/kernel-vfs-fsync.m4 new file mode 100644 index 000000000..3c42bf1a0 --- /dev/null +++ b/config/kernel-vfs-fsync.m4 @@ -0,0 +1,17 @@ +dnl # +dnl # 2.6.35 API change, +dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. +dnl # +AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ + AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + vfs_fsync(NULL, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel-vfs-getattr.m4 b/config/kernel-vfs-getattr.m4 new file mode 100644 index 000000000..7772cb514 --- /dev/null +++ b/config/kernel-vfs-getattr.m4 @@ -0,0 +1,62 @@ +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 2 args]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/fs.h> + ],[ + vfs_getattr((struct path *) NULL, + (struct kstat *)NULL); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1, + [vfs_getattr wants 2 args]) + ],[ + 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) + ]) +]) diff --git a/config/kernel-wait.m4 b/config/kernel-wait.m4 new file mode 100644 index 000000000..5f718a160 --- /dev/null +++ b/config/kernel-wait.m4 @@ -0,0 +1,76 @@ +dnl # +dnl # 3.17 API change, +dnl # wait_on_bit() no longer requires an action argument. The former +dnl # "wait_on_bit" interface required an 'action' function to be provided +dnl # which does the actual waiting. There were over 20 such functions in the +dnl # kernel, many of them identical, though most cases can be satisfied by one +dnl # of just two functions: one which uses io_schedule() and one which just +dnl # uses schedule(). This API change was made to consolidate all of those +dnl # redundant wait functions. +dnl # +AC_DEFUN([SPL_AC_WAIT_ON_BIT], [ + AC_MSG_CHECKING([whether wait_on_bit() takes an action]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/wait.h> + ],[ + int (*action)(void *) = NULL; + wait_on_bit(NULL, 0, action, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes]) + ],[ + AC_MSG_RESULT(no) + ]) +]) +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) + ]) +]) diff --git a/config/kernel-zlib.m4 b/config/kernel-zlib.m4 new file mode 100644 index 000000000..bb236466a --- /dev/null +++ b/config/kernel-zlib.m4 @@ -0,0 +1,63 @@ +dnl # +dnl # zlib inflate compat, +dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled. +dnl # +AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [ + AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined]) + SPL_LINUX_TRY_COMPILE([ + #if !defined(CONFIG_ZLIB_INFLATE) && \ + !defined(CONFIG_ZLIB_INFLATE_MODULE) + #error CONFIG_ZLIB_INFLATE not defined + #endif + ],[ ],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([ + *** This kernel does not include the required zlib inflate support. + *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.]) + ]) +]) + +dnl # +dnl # zlib deflate compat, +dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled. +dnl # +AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [ + AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined]) + SPL_LINUX_TRY_COMPILE([ + #if !defined(CONFIG_ZLIB_DEFLATE) && \ + !defined(CONFIG_ZLIB_DEFLATE_MODULE) + #error CONFIG_ZLIB_DEFLATE not defined + #endif + ],[ ],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([ + *** This kernel does not include the required zlib deflate support. + *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.]) + ]) +]) + +dnl # +dnl # 2.6.39 API compat, +dnl # The function zlib_deflate_workspacesize() now take 2 arguments. +dnl # This was done to avoid always having to allocate the maximum size +dnl # workspace (268K). The caller can now specific the windowBits and +dnl # memLevel compression parameters to get a smaller workspace. +dnl # +AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], + [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) + SPL_LINUX_TRY_COMPILE([ + #include <linux/zlib.h> + ],[ + return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, + [zlib_deflate_workspacesize() wants 2 args]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/spl-build.m4 b/config/spl-build.m4 index afc8de65f..553b5d51b 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -753,959 +753,3 @@ AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ AC_MSG_CHECKING([whether kernel defines atomic64_t]) AC_MSG_RESULT([$have_atomic64_t]) ]) - -AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - dnl # - dnl # 2.6.23 to 2.6.34 API change - dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) - dnl # - AC_MSG_CHECKING([whether old 2-argument shrinker exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); - ],[ - struct shrinker cache_shrinker = { - .shrink = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, - [old shrinker callback wants 2 args]) - ],[ - AC_MSG_RESULT(no) - dnl # - dnl # 2.6.35 - 2.6.39 API change - dnl # ->shrink(struct shrinker *, - dnl # int nr_to_scan, gfp_t gfp_mask) - dnl # - AC_MSG_CHECKING([whether old 3-argument shrinker exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - int shrinker_cb(struct shrinker *, int nr_to_scan, - gfp_t gfp_mask); - ],[ - struct shrinker cache_shrinker = { - .shrink = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, - [old shrinker callback wants 3 args]) - ],[ - AC_MSG_RESULT(no) - dnl # - dnl # 3.0 - 3.11 API change - dnl # ->shrink(struct shrinker *, - dnl # struct shrink_control *sc) - dnl # - AC_MSG_CHECKING( - [whether new 2-argument shrinker exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - int shrinker_cb(struct shrinker *, - struct shrink_control *sc); - ],[ - struct shrinker cache_shrinker = { - .shrink = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1, - [new shrinker callback wants 2 args]) - ],[ - AC_MSG_RESULT(no) - dnl # - dnl # 3.12 API change, - dnl # ->shrink() is logically split in to - dnl # ->count_objects() and ->scan_objects() - dnl # - AC_MSG_CHECKING( - [whether ->count_objects callback exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - - unsigned long shrinker_cb( - struct shrinker *, - struct shrink_control *sc); - ],[ - struct shrinker cache_shrinker = { - .count_objects = shrinker_cb, - .scan_objects = shrinker_cb, - .seeks = DEFAULT_SEEKS, - }; - register_shrinker(&cache_shrinker); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, - 1, [->count_objects exists]) - ],[ - AC_MSG_ERROR(error) - ]) - ]) - ]) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) - -dnl # -dnl # 2.6.33 API change, -dnl # Removed .ctl_name from struct ctl_table. -dnl # -AC_DEFUN([SPL_AC_CTL_NAME], [ - AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/sysctl.h> - ],[ - struct ctl_table ctl __attribute__ ((unused)); - ctl.ctl_name = 0; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 3.10 API change, -dnl # PDE is replaced by PDE_DATA -dnl # -AC_DEFUN([SPL_AC_PDE_DATA], [ - AC_MSG_CHECKING([whether PDE_DATA() is available]) - SPL_LINUX_TRY_COMPILE_SYMBOL([ - #include <linux/proc_fs.h> - ], [ - PDE_DATA(NULL); - ], [PDE_DATA], [], [ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 3.9 API change -dnl # set_fs_pwd takes const struct path * -dnl # -AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST], - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/spinlock.h> - #include <linux/fs_struct.h> - #include <linux/path.h> - void (*const set_fs_pwd_func) - (struct fs_struct *, const struct path *) - = set_fs_pwd; - ],[ - return 0; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, - [set_fs_pwd() needs const path *]) - ],[ - SPL_LINUX_TRY_COMPILE([ - #include <linux/spinlock.h> - #include <linux/fs_struct.h> - #include <linux/path.h> - void (*const set_fs_pwd_func) - (struct fs_struct *, struct path *) - = set_fs_pwd; - ],[ - return 0; - ],[ - AC_MSG_RESULT(no) - ],[ - AC_MSG_ERROR(unknown) - ]) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) - -dnl # -dnl # 2.6.36 API change, -dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to -dnl # a spinlock_t to improve the fastpath performance. -dnl # -AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ - AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - SPL_LINUX_TRY_COMPILE([ - #include <linux/sched.h> - #include <linux/fs_struct.h> - ],[ - static struct fs_struct fs; - spin_lock_init(&fs.lock); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, - [struct fs_struct uses spinlock_t]) - ],[ - AC_MSG_RESULT(no) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) - -dnl # -dnl # User namespaces, use kuid_t in place of uid_t -dnl # where available. Not strictly a user namespaces thing -dnl # but it should prevent surprises -dnl # -AC_DEFUN([SPL_AC_KUIDGID_T], [ - AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/uidgid.h> - ], [ - kuid_t userid = KUIDT_INIT(0); - kgid_t groupid = KGIDT_INIT(0); - ],[ - SPL_LINUX_TRY_COMPILE([ - #include <linux/uidgid.h> - ], [ - kuid_t userid = 0; - kgid_t groupid = 0; - ],[ - AC_MSG_RESULT(yes; optional) - ],[ - AC_MSG_RESULT(yes; mandatory) - AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use]) - ]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 2.6.35 API change, -dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. -dnl # -AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ - AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - vfs_fsync(NULL, 0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 3.5 API change, -dnl # inode_operations.truncate_range removed -dnl # -AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [ - AC_MSG_CHECKING([whether truncate_range() inode operation is available]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - struct inode_operations ops; - ops.truncate_range = NULL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1, - [truncate_range() inode operation is available]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # Linux 2.6.38 - 3.x API -dnl # -AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [ - AC_MSG_CHECKING([whether fops->fallocate() exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; - struct file_operations fops __attribute__ ((unused)) = { - .fallocate = fallocate, - }; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # Linux 2.6.x - 2.6.37 API -dnl # -AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [ - AC_MSG_CHECKING([whether iops->fallocate() exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL; - struct inode_operations fops __attribute__ ((unused)) = { - .fallocate = fallocate, - }; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # PaX Linux 2.6.38 - 3.x API -dnl # -AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [ - AC_MSG_CHECKING([whether fops->fallocate() exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; - struct file_operations_no_const fops __attribute__ ((unused)) = { - .fallocate = fallocate, - }; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # The fallocate callback was moved from the inode_operations -dnl # structure to the file_operations structure. -dnl # -AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [ - SPL_AC_KERNEL_FILE_FALLOCATE - SPL_AC_KERNEL_INODE_FALLOCATE - SPL_AC_PAX_KERNEL_FILE_FALLOCATE -]) - -dnl # -dnl # zlib inflate compat, -dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled. -dnl # -AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [ - AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined]) - SPL_LINUX_TRY_COMPILE([ - #if !defined(CONFIG_ZLIB_INFLATE) && \ - !defined(CONFIG_ZLIB_INFLATE_MODULE) - #error CONFIG_ZLIB_INFLATE not defined - #endif - ],[ ],[ - AC_MSG_RESULT([yes]) - ],[ - AC_MSG_RESULT([no]) - AC_MSG_ERROR([ - *** This kernel does not include the required zlib inflate support. - *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.]) - ]) -]) - -dnl # -dnl # zlib deflate compat, -dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled. -dnl # -AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [ - AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined]) - SPL_LINUX_TRY_COMPILE([ - #if !defined(CONFIG_ZLIB_DEFLATE) && \ - !defined(CONFIG_ZLIB_DEFLATE_MODULE) - #error CONFIG_ZLIB_DEFLATE not defined - #endif - ],[ ],[ - AC_MSG_RESULT([yes]) - ],[ - AC_MSG_RESULT([no]) - AC_MSG_ERROR([ - *** This kernel does not include the required zlib deflate support. - *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.]) - ]) -]) - -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. -dnl # This was done to avoid always having to allocate the maximum size -dnl # workspace (268K). The caller can now specific the windowBits and -dnl # memLevel compression parameters to get a smaller workspace. -dnl # -AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], - [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/zlib.h> - ],[ - return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, - [zlib_deflate_workspacesize() wants 2 args]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 2.6.39 API change, -dnl # Shrinker adjust to use common shrink_control structure. -dnl # -AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [ - AC_MSG_CHECKING([whether struct shrink_control exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/mm.h> - ],[ - struct shrink_control sc __attribute__ ((unused)); - - sc.nr_to_scan = 0; - sc.gfp_mask = GFP_KERNEL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, - [struct shrink_control exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 3.1 API Change -dnl # -dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to -dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. -dnl # -AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ - AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - SPL_LINUX_TRY_COMPILE([ - #include <linux/rwsem.h> - ],[ - struct rw_semaphore dummy_semaphore __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) - AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, - [struct rw_semaphore member wait_lock is raw_spinlock_t]) - ],[ - AC_MSG_RESULT(no) - ]) - 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 # -AC_DEFUN([SPL_AC_SCHED_RT_HEADER], - [AC_MSG_CHECKING([whether header linux/sched/rt.h exists]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/sched.h> - #include <linux/sched/rt.h> - ],[ - return 0; - ],[ - AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists]) - AC_MSG_RESULT(yes) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -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 2 args]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - vfs_getattr((struct path *) NULL, - (struct kstat *)NULL); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1, - [vfs_getattr wants 2 args]) - ],[ - 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) - ]) -]) - -dnl # -dnl # 2.6.36 API compatibility. -dnl # Added usleep_range timer. -dnl # usleep_range is a finer precision implementation of msleep -dnl # designed to be a drop-in replacement for udelay where a precise -dnl # sleep / busy-wait is unnecessary. -dnl # -AC_DEFUN([SPL_AC_USLEEP_RANGE], [ - AC_MSG_CHECKING([whether usleep_range() is available]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/delay.h> - ],[ - usleep_range(0, 0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_USLEEP_RANGE, 1, - [usleep_range is available]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 2.6.35 API change, -dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are -dnl # private allocation flags which are applied when allocating a new slab -dnl # in kmem_getpages(). Unfortunately there is no public API for setting -dnl # non-default flags. -dnl # -AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ - AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/slab.h> - ],[ - struct kmem_cache cachep __attribute__ ((unused)); - cachep.allocflags = GFP_KERNEL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, - [struct kmem_cache has allocflags]) - ],[ - AC_MSG_RESULT(no) - - AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/slab.h> - ],[ - struct kmem_cache cachep __attribute__ ((unused)); - cachep.gfpflags = GFP_KERNEL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1, - [struct kmem_cache has gfpflags]) - ],[ - AC_MSG_RESULT(no) - ]) - ]) -]) - -dnl # -dnl # 3.17 API change, -dnl # wait_on_bit() no longer requires an action argument. The former -dnl # "wait_on_bit" interface required an 'action' function to be provided -dnl # which does the actual waiting. There were over 20 such functions in the -dnl # kernel, many of them identical, though most cases can be satisfied by one -dnl # of just two functions: one which uses io_schedule() and one which just -dnl # uses schedule(). This API change was made to consolidate all of those -dnl # redundant wait functions. -dnl # -AC_DEFUN([SPL_AC_WAIT_ON_BIT], [ - AC_MSG_CHECKING([whether wait_on_bit() takes an action]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/wait.h> - ],[ - int (*action)(void *) = NULL; - wait_on_bit(NULL, 0, action, 0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes]) - ],[ - 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) - ]) -]) - -dnl # -dnl # 3.19 API change -dnl # The io_schedule_timeout() function is present in all 2.6.32 kernels -dnl # but it was not exported until Linux 3.19. The RHEL 7.x kernels which -dnl # are based on a 3.10 kernel do export this symbol. -dnl # -AC_DEFUN([SPL_AC_IO_SCHEDULE_TIMEOUT], [ - AC_MSG_CHECKING([whether io_schedule_timeout() is available]) - SPL_LINUX_TRY_COMPILE_SYMBOL([ - #include <linux/sched.h> - ], [ - (void) io_schedule_timeout(1); - ], [io_schedule_timeout], [], [ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_IO_SCHEDULE_TIMEOUT, 1, [yes]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 4.14 API change -dnl # kernel_write() which was introduced in 3.9 was updated to take -dnl # the offset as a pointer which is needed by vn_rdwr(). -dnl # -AC_DEFUN([SPL_AC_KERNEL_WRITE], [ - AC_MSG_CHECKING([whether kernel_write() takes loff_t pointer]) - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - struct file *file = NULL; - const void *buf = NULL; - size_t count = 0; - loff_t *pos = NULL; - ssize_t ret; - - ret = kernel_write(file, buf, count, pos); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KERNEL_WRITE_PPOS, 1, - [kernel_write() take loff_t pointer]) - ],[ - AC_MSG_RESULT(no) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) - -dnl # -dnl # 4.14 API change -dnl # kernel_read() which has existed for forever was updated to take -dnl # the offset as a pointer which is needed by vn_rdwr(). -dnl # -AC_DEFUN([SPL_AC_KERNEL_READ], [ - AC_MSG_CHECKING([whether kernel_read() takes loff_t pointer]) - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - SPL_LINUX_TRY_COMPILE([ - #include <linux/fs.h> - ],[ - struct file *file = NULL; - void *buf = NULL; - size_t count = 0; - loff_t *pos = NULL; - ssize_t ret; - - ret = kernel_read(file, buf, count, pos); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KERNEL_READ_PPOS, 1, - [kernel_read() take loff_t pointer]) - ],[ - AC_MSG_RESULT(no) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) - -dnl # -dnl # 4.15 API change -dnl # https://lkml.org/lkml/2017/11/25/90 -dnl # Check if timer_list.func get passed a timer_list or an unsigned long -dnl # (older kernels). Also sanity check the from_timer() and timer_setup() -dnl # macros are available as well, since they will be used in the same newer -dnl # kernels that support the new timer_list.func signature. -dnl # -AC_DEFUN([SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST], [ - AC_MSG_CHECKING([whether timer_list.function gets a timer_list]) - tmp_flags="$EXTRA_KCFLAGS" - EXTRA_KCFLAGS="-Werror" - SPL_LINUX_TRY_COMPILE([ - #include <linux/timer.h> - void task_expire(struct timer_list *tl) {} - ],[ - #ifndef from_timer - #error "No from_timer() macro" - #endif - - struct timer_list timer; - timer.function = task_expire; - timer_setup(&timer, NULL, 0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1, - [timer_list.function gets a timer_list]) - ],[ - AC_MSG_RESULT(no) - ]) - EXTRA_KCFLAGS="$tmp_flags" -]) |