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fs: retry preallocate on Linux if interrupted by signal

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This commit is contained in:
Michael Eischer 2024-09-07 16:37:26 +02:00
parent 4f0affd4f7
commit 34fe73ea42
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 ( import (
"os" "os"
"syscall"
"golang.org/x/sys/unix" "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) // int fallocate(int fd, int mode, off_t offset, off_t len)
// use mode = 0 to also change the file size // 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
}
}
} }