mirror of
https://github.com/criyle/go-judge.git
synced 2025-09-26 22:39:12 +08:00
56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
package envexec
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import (
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"os"
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"syscall"
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)
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func copyDir(src *os.File, dst string) error {
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// make sure dir exists
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os.MkdirAll(dst, 0777)
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newDir, err := os.Open(dst)
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if err != nil {
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return err
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}
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defer newDir.Close()
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dir := src
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names, err := dir.Readdirnames(-1)
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if err != nil {
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return err
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}
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for _, n := range names {
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if err := copyFileDir(int(dir.Fd()), int(newDir.Fd()), n); err != nil {
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return err
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}
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}
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return nil
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}
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func copyFileDir(srcDirFd, dstDirFd int, name string) error {
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// open the source file
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fd, err := syscall.Openat(srcDirFd, name, syscall.O_CLOEXEC|syscall.O_RDONLY, 0777)
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if err != nil {
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return err
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}
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defer syscall.Close(fd)
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var st syscall.Stat_t
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if err := syscall.Fstat(fd, &st); err != nil {
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return err
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}
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// open the dst file
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dstFd, err := syscall.Openat(dstDirFd, name, syscall.O_CLOEXEC|syscall.O_WRONLY|syscall.O_CREAT|syscall.O_TRUNC, 0777)
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if err != nil {
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return err
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}
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defer syscall.Close(dstFd)
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// send file, ignore error for now if it is dir
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if _, err := syscall.Sendfile(dstFd, fd, nil, int(st.Size)); err != nil && err != syscall.EINVAL {
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return err
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}
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return nil
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}
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