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Prevent multiple mounts of devpts

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This commit is contained in:
vvb2060 2021-09-20 13:15:16 +08:00 committed by John Wu
parent 713ce4719b
commit d20517483e
1 changed files with 9 additions and 7 deletions
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16
native/jni/core/daemon.cpp
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@ -349,13 +349,15 @@ static void daemon_entry() {
// Use isolated devpts if kernel support
if (access("/dev/pts/ptmx", F_OK) == 0) {
auto pts = MAGISKTMP + "/" SHELLPTS;
xmkdirs(pts.data(), 0755);
xmount("devpts", pts.data(), "devpts",
MS_NOSUID | MS_NOEXEC, "newinstance");
auto ptmx = pts + "/ptmx";
if (access(ptmx.data(), F_OK)) {
xumount(pts.data());
rmdir(pts.data());
if (access(pts.data(), F_OK)) {
xmkdirs(pts.data(), 0755);
xmount("devpts", pts.data(), "devpts",
MS_NOSUID | MS_NOEXEC, "newinstance");
auto ptmx = pts + "/ptmx";
if (access(ptmx.data(), F_OK)) {
xumount(pts.data());
rmdir(pts.data());
}
}
}