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libct: fix mips compilation

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On MIPS arches, Rdev is uint32 so we have to convert it.

Fixes issue 4962.

Fixes: 8476df83 ("libct: add/use isDevNull, verifyDevNull")
Fixes: de87203e ("console: verify /dev/pts/ptmx before use")
Fixes: 398955bc ("console: add fallback for pre-TIOCGPTPEER kernels")
Reported-by: Tianon Gravi <admwiggin@gmail.com>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin
2025-11-05 17:52:47 -08:00
parent 2f74f4ae1b
commit 1b954f1f06
2 changed files with 10 additions and 7 deletions
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libcontainer/console_linux.go
+6 -4
View File
@@ -33,9 +33,10 @@ func checkPtmxHandle(ptmx *os.File) error {
if stat.Ino != PTMX_INO {
return fmt.Errorf("ptmx handle has wrong inode number: %v", stat.Ino)
}
if stat.Mode&unix.S_IFMT != unix.S_IFCHR || stat.Rdev != unix.Mkdev(PTMX_MAJOR, PTMX_MINOR) {
rdev := uint64(stat.Rdev) //nolint:unconvert // Rdev is uint32 on MIPS.
if stat.Mode&unix.S_IFMT != unix.S_IFCHR || rdev != unix.Mkdev(PTMX_MAJOR, PTMX_MINOR) {
return fmt.Errorf("ptmx handle is not a real char ptmx device: ftype %#x %d:%d",
stat.Mode&unix.S_IFMT, unix.Major(stat.Rdev), unix.Minor(stat.Rdev))
stat.Mode&unix.S_IFMT, unix.Major(rdev), unix.Minor(rdev))
}
return nil
})
@@ -79,9 +80,10 @@ func getPtyPeer(pty console.Console, unsafePeerPath string, flags int) (*os.File
if statfs.Type != unix.DEVPTS_SUPER_MAGIC {
return fmt.Errorf("pty peer handle is not on a real devpts mount: super magic is %#x", statfs.Type)
}
if stat.Mode&unix.S_IFMT != unix.S_IFCHR || stat.Rdev != wantPeerDev {
rdev := uint64(stat.Rdev) //nolint:unconvert // Rdev is uint32 on MIPS.
if stat.Mode&unix.S_IFMT != unix.S_IFCHR || rdev != wantPeerDev {
return fmt.Errorf("pty peer handle is not the real char device for pty %d: ftype %#x %d:%d",
peerNum, stat.Mode&unix.S_IFMT, unix.Major(stat.Rdev), unix.Minor(stat.Rdev))
peerNum, stat.Mode&unix.S_IFMT, unix.Major(rdev), unix.Minor(rdev))
}
return nil
}); err != nil {