6c3f97399a
tlog is used heavily everywhere and deserves a shorter name.
Renamed using sed magic, without any manual rework:
find * -type f -exec sed -i 's/toggledlog/tlog/g' {} +
36 lines
1.0 KiB
Go
36 lines
1.0 KiB
Go
package fusefrontend
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import (
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"sync"
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"syscall"
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)
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import "github.com/rfjakob/gocryptfs/internal/tlog"
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var preallocWarn sync.Once
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// prealloc - preallocate space without changing the file size. This prevents
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// us from running out of space in the middle of an operation.
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func prealloc(fd int, off int64, len int64) (err error) {
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for {
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err = syscall.Fallocate(fd, FALLOC_FL_KEEP_SIZE, off, len)
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if err == syscall.EINTR {
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// fallocate, like many syscalls, can return EINTR. This is not an
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// error and just signifies that the operation was interrupted by a
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// signal and we should try again.
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continue
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}
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if err == syscall.EOPNOTSUPP {
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// ZFS does not support fallocate which caused gocryptfs to abort
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// every write operation: https://github.com/rfjakob/gocryptfs/issues/22
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preallocWarn.Do(func() {
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tlog.Warn.Printf("Warning: The underlying filesystem " +
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"does not support fallocate(2). gocryptfs will continue working " +
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"but is no longer resistant against out-of-space errors.\n")
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})
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return nil
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}
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return err
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}
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}
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