Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / befs / endian.h

diff --git a/kernel/fs/befs/endian.h b/kernel/fs/befs/endian.h
new file mode 100644 (file)
index 0000000..2722387
--- /dev/null
+++ b/kernel/fs/befs/endian.h
@@ -0,0 +1,125 @@
+/*
+ * linux/fs/befs/endian.h
+ *
+ * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>
+ *
+ * Partially based on similar funtions in the sysv driver.
+ */
+
+#ifndef LINUX_BEFS_ENDIAN
+#define LINUX_BEFS_ENDIAN
+
+#include <asm/byteorder.h>
+
+static inline u64
+fs64_to_cpu(const struct super_block *sb, fs64 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return le64_to_cpu((__force __le64)n);
+       else
+               return be64_to_cpu((__force __be64)n);
+}
+
+static inline fs64
+cpu_to_fs64(const struct super_block *sb, u64 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return (__force fs64)cpu_to_le64(n);
+       else
+               return (__force fs64)cpu_to_be64(n);
+}
+
+static inline u32
+fs32_to_cpu(const struct super_block *sb, fs32 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return le32_to_cpu((__force __le32)n);
+       else
+               return be32_to_cpu((__force __be32)n);
+}
+
+static inline fs32
+cpu_to_fs32(const struct super_block *sb, u32 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return (__force fs32)cpu_to_le32(n);
+       else
+               return (__force fs32)cpu_to_be32(n);
+}
+
+static inline u16
+fs16_to_cpu(const struct super_block *sb, fs16 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return le16_to_cpu((__force __le16)n);
+       else
+               return be16_to_cpu((__force __be16)n);
+}
+
+static inline fs16
+cpu_to_fs16(const struct super_block *sb, u16 n)
+{
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
+               return (__force fs16)cpu_to_le16(n);
+       else
+               return (__force fs16)cpu_to_be16(n);
+}
+
+/* Composite types below here */
+
+static inline befs_block_run
+fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n)
+{
+       befs_block_run run;
+
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {
+               run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group);
+               run.start = le16_to_cpu((__force __le16)n.start);
+               run.len = le16_to_cpu((__force __le16)n.len);
+       } else {
+               run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group);
+               run.start = be16_to_cpu((__force __be16)n.start);
+               run.len = be16_to_cpu((__force __be16)n.len);
+       }
+       return run;
+}
+
+static inline befs_disk_block_run
+cpu_to_fsrun(const struct super_block *sb, befs_block_run n)
+{
+       befs_disk_block_run run;
+
+       if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {
+               run.allocation_group = cpu_to_le32(n.allocation_group);
+               run.start = cpu_to_le16(n.start);
+               run.len = cpu_to_le16(n.len);
+       } else {
+               run.allocation_group = cpu_to_be32(n.allocation_group);
+               run.start = cpu_to_be16(n.start);
+               run.len = cpu_to_be16(n.len);
+       }
+       return run;
+}
+
+static inline befs_data_stream
+fsds_to_cpu(const struct super_block *sb, const befs_disk_data_stream *n)
+{
+       befs_data_stream data;
+       int i;
+
+       for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i)
+               data.direct[i] = fsrun_to_cpu(sb, n->direct[i]);
+
+       data.max_direct_range = fs64_to_cpu(sb, n->max_direct_range);
+       data.indirect = fsrun_to_cpu(sb, n->indirect);
+       data.max_indirect_range = fs64_to_cpu(sb, n->max_indirect_range);
+       data.double_indirect = fsrun_to_cpu(sb, n->double_indirect);
+       data.max_double_indirect_range = fs64_to_cpu(sb,
+                                                    n->
+                                                    max_double_indirect_range);
+       data.size = fs64_to_cpu(sb, n->size);
+
+       return data;
+}
+
+#endif                         //LINUX_BEFS_ENDIAN