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authorJakob Unterwurzacher2016-07-03 17:51:40 +0200
committerJakob Unterwurzacher2016-07-03 17:51:40 +0200
commitc9a472c12ff08a6481c086c791f3005e81dbbcf1 (patch)
treeb2a18a1482f15564ad91fec117b4b7953af218d4 /internal/fusefrontend/compat_linux.go
parent0d5d6fc99bf84ff583e7ebf0283c4d0efe4245be (diff)
syscallcompat: move syscall wrapper to their own package
We will get more of them as OSX also lacks support for openat.
Diffstat (limited to 'internal/fusefrontend/compat_linux.go')
-rw-r--r--internal/fusefrontend/compat_linux.go35
1 files changed, 0 insertions, 35 deletions
diff --git a/internal/fusefrontend/compat_linux.go b/internal/fusefrontend/compat_linux.go
deleted file mode 100644
index 9a8684f..0000000
--- a/internal/fusefrontend/compat_linux.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package fusefrontend
-
-import (
- "sync"
- "syscall"
-)
-
-import "github.com/rfjakob/gocryptfs/internal/tlog"
-
-var preallocWarn sync.Once
-
-// prealloc - preallocate space without changing the file size. This prevents
-// us from running out of space in the middle of an operation.
-func prealloc(fd int, off int64, len int64) (err error) {
- for {
- err = syscall.Fallocate(fd, FALLOC_FL_KEEP_SIZE, off, len)
- if err == syscall.EINTR {
- // fallocate, like many syscalls, can return EINTR. This is not an
- // error and just signifies that the operation was interrupted by a
- // signal and we should try again.
- continue
- }
- if err == syscall.EOPNOTSUPP {
- // ZFS does not support fallocate which caused gocryptfs to abort
- // every write operation: https://github.com/rfjakob/gocryptfs/issues/22
- preallocWarn.Do(func() {
- tlog.Warn.Printf("Warning: The underlying filesystem " +
- "does not support fallocate(2). gocryptfs will continue working " +
- "but is no longer resistant against out-of-space errors.\n")
- })
- return nil
- }
- return err
- }
-}