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Merge pull request #5045 from MichaelEischer/fix-preallocate-eintr

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Linux: retry preallocate if interrutped by signal
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Michael Eischer 2024-09-14 19:17:51 +02:00 committed by GitHub
commit efec1a5e96
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1 changed files with 14 additions and 1 deletions
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15
internal/fs/preallocate_linux.go
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@ -2,6 +2,7 @@ package fs
import (
"os"
"syscall"
"golang.org/x/sys/unix"
)
@ -12,5 +13,17 @@ func PreallocateFile(wr *os.File, size int64) error {
}
// int fallocate(int fd, int mode, off_t offset, off_t len)
// use mode = 0 to also change the file size
return unix.Fallocate(int(wr.Fd()), 0, 0, size)
return ignoringEINTR(func() error { return unix.Fallocate(int(wr.Fd()), 0, 0, size) })
}
// ignoringEINTR makes a function call and repeats it if it returns
// an EINTR error.
// copied from /usr/lib/go/src/internal/poll/fd_posix.go of go 1.23.1
func ignoringEINTR(fn func() error) error {
for {
err := fn()
if err != syscall.EINTR {
return err
}
}
}