#define __LIBCFS_LINUX_MISC_H__
#include <linux/fs.h>
+/* Since Commit 2f8b544477e6 ("block,fs: untangle fs.h and blk_types.h")
+ * fs.h doesn't include blk_types.h, but we need it.
+ */
+#include <linux/blk_types.h>
#include <linux/mutex.h>
#include <linux/user_namespace.h>
#include <linux/uio.h>
#endif
#endif /* HAVE_IOV_ITER_TYPE */
-int cfs_get_environ(const char *key, char *value, int *val_len);
-
int cfs_kernel_write(struct file *filp, const void *buf, size_t count,
loff_t *pos);
ssize_t cfs_kernel_read(struct file *file, void *buf, size_t count,
int kstrtobool_from_user(const char __user *s, size_t count, bool *res);
#endif /* HAVE_KSTRTOBOOL_FROM_USER */
+#ifndef HAVE_KREF_READ
+static inline int kref_read(const struct kref *kref)
+{
+ return atomic_read(&kref->refcount);
+}
+#endif /* HAVE_KREF_READ */
+
+#ifdef HAVE_FORCE_SIG_WITH_TASK
+#define cfs_force_sig(sig, task) force_sig((sig), (task))
+#else
+#define cfs_force_sig(sig, task) \
+do { \
+ unsigned long flags; \
+ \
+ spin_lock_irqsave(&task->sighand->siglock, flags); \
+ task->sighand->action[sig - 1].sa.sa_handler = SIG_DFL; \
+ send_sig(sig, task, 1); \
+ spin_unlock_irqrestore(&task->sighand->siglock, flags); \
+} while (0)
+#endif
+
void cfs_arch_init(void);
#ifndef container_of_safe
((type *)(__mptr - offsetof(type, member))); })
#endif
+/*
+ * Linux v4.15-rc2-5-g4229a470175b added sizeof_field()
+ * Linux v5.5-rc4-1-g1f07dcc459d5 removed FIELD_SIZEOF()
+ * Proved a sizeof_field in terms of FIELD_SIZEOF() when one is not provided
+ */
+#ifndef sizeof_field
+#define sizeof_field(type, member) FIELD_SIZEOF(type, member)
+#endif
+
+#ifndef HAVE_KALLSYMS_LOOKUP_NAME
+static inline void *kallsyms_lookup_name(char *func)
+{
+ return NULL;
+}
+#endif
+
#endif /* __LIBCFS_LINUX_MISC_H__ */