[VOL-5486] Fix deprecated versions
Change-Id: If0b888d6c2f33b2f415c8b03b08dc994bb3df3f4
Signed-off-by: Abhay Kumar <abhay.kumar@radisys.com>
diff --git a/vendor/go.etcd.io/bbolt/bolt_unix.go b/vendor/go.etcd.io/bbolt/bolt_unix.go
new file mode 100644
index 0000000..f68e721
--- /dev/null
+++ b/vendor/go.etcd.io/bbolt/bolt_unix.go
@@ -0,0 +1,89 @@
+//go:build !windows && !plan9 && !solaris && !aix && !android
+
+package bbolt
+
+import (
+ "fmt"
+ "syscall"
+ "time"
+ "unsafe"
+
+ "golang.org/x/sys/unix"
+
+ "go.etcd.io/bbolt/errors"
+ "go.etcd.io/bbolt/internal/common"
+)
+
+// flock acquires an advisory lock on a file descriptor.
+func flock(db *DB, exclusive bool, timeout time.Duration) error {
+ var t time.Time
+ if timeout != 0 {
+ t = time.Now()
+ }
+ fd := db.file.Fd()
+ flag := syscall.LOCK_NB
+ if exclusive {
+ flag |= syscall.LOCK_EX
+ } else {
+ flag |= syscall.LOCK_SH
+ }
+ for {
+ // Attempt to obtain an exclusive lock.
+ err := syscall.Flock(int(fd), flag)
+ if err == nil {
+ return nil
+ } else if err != syscall.EWOULDBLOCK {
+ return err
+ }
+
+ // If we timed out then return an error.
+ if timeout != 0 && time.Since(t) > timeout-flockRetryTimeout {
+ return errors.ErrTimeout
+ }
+
+ // Wait for a bit and try again.
+ time.Sleep(flockRetryTimeout)
+ }
+}
+
+// funlock releases an advisory lock on a file descriptor.
+func funlock(db *DB) error {
+ return syscall.Flock(int(db.file.Fd()), syscall.LOCK_UN)
+}
+
+// mmap memory maps a DB's data file.
+func mmap(db *DB, sz int) error {
+ // Map the data file to memory.
+ b, err := unix.Mmap(int(db.file.Fd()), 0, sz, syscall.PROT_READ, syscall.MAP_SHARED|db.MmapFlags)
+ if err != nil {
+ return err
+ }
+
+ // Advise the kernel that the mmap is accessed randomly.
+ err = unix.Madvise(b, syscall.MADV_RANDOM)
+ if err != nil && err != syscall.ENOSYS {
+ // Ignore not implemented error in kernel because it still works.
+ return fmt.Errorf("madvise: %s", err)
+ }
+
+ // Save the original byte slice and convert to a byte array pointer.
+ db.dataref = b
+ db.data = (*[common.MaxMapSize]byte)(unsafe.Pointer(&b[0]))
+ db.datasz = sz
+ return nil
+}
+
+// munmap unmaps a DB's data file from memory.
+func munmap(db *DB) error {
+ // Ignore the unmap if we have no mapped data.
+ if db.dataref == nil {
+ return nil
+ }
+
+ // Unmap using the original byte slice.
+ err := unix.Munmap(db.dataref)
+ db.dataref = nil
+ db.data = nil
+ db.datasz = 0
+ return err
+}