mirror of
https://github.com/Mic92/sops-nix.git
synced 2026-01-08 14:47:23 +08:00
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
//go:build darwin
|
|
// +build darwin
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func SecureSymlinkChown(symlinkToCheck string, expectedTarget string, owner, group int) error {
|
|
// not sure what O_PATH is needed for anyways
|
|
fd, err := unix.Open(symlinkToCheck, unix.O_CLOEXEC|unix.O_SYMLINK|unix.O_NOFOLLOW, 0)
|
|
if err != nil {
|
|
return fmt.Errorf("Failed to open %s: %w", symlinkToCheck, err)
|
|
}
|
|
defer unix.Close(fd)
|
|
|
|
buf := make([]byte, len(expectedTarget)+1) // oversize by one to detect trunc
|
|
n, err := unix.Readlinkat(fd, "", buf)
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't readlinkat %s", symlinkToCheck)
|
|
}
|
|
if n > len(expectedTarget) || string(buf[:n]) != expectedTarget {
|
|
return fmt.Errorf("symlink %s does not point to %s", symlinkToCheck, expectedTarget)
|
|
}
|
|
err = unix.Fchownat(fd, "", owner, group, unix.AT_SYMLINK_NOFOLLOW)
|
|
if err != nil {
|
|
return fmt.Errorf("cannot change owner of '%s' to %d/%d: %w", symlinkToCheck, owner, group, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// NUMSECTORS=128000 # a sector is 512 bytes
|
|
// mydev=`hdiutil attach -nomount ram://$NUMSECTORS`
|
|
// newfs_hfs $mydev
|
|
// mkdir /tmp/mymount
|
|
// mount -t hfs $mydev /tmp/mymount
|
|
|
|
func MountSecretFs(mountpoint string, keysGid int, userMode bool) error {
|
|
//if err := os.MkdirAll(mountpoint, 0751); err != nil {
|
|
// return fmt.Errorf("Cannot create directory '%s': %w", mountpoint, err)
|
|
//}
|
|
|
|
//buf := unix.Statfs_t{}
|
|
//if err := unix.Statfs(mountpoint, &buf); err != nil {
|
|
// return fmt.Errorf("Cannot get statfs for directory '%s': %w", mountpoint, err)
|
|
//}
|
|
//if int32(buf.Type) != RAMFS_MAGIC {
|
|
// if err := unix.Mount("none", mountpoint, "ramfs", unix.MS_NODEV|unix.MS_NOSUID, "mode=0751"); err != nil {
|
|
// return fmt.Errorf("Cannot mount: %s", err)
|
|
// }
|
|
//}
|
|
|
|
//if err := os.Chown(mountpoint, 0, int(keysGid)); err != nil {
|
|
// return fmt.Errorf("Cannot change owner/group of '%s' to 0/%d: %w", mountpoint, keysGid, err)
|
|
//}
|
|
|
|
return nil
|
|
}
|