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Commit 622633e7 authored by Paul Lawrence's avatar Paul Lawrence
Browse files

Fix new adb remount/overlayfs solution for older kernels

Bug: 395860950
Test: system/core/fs_mgr/tests/adb-remount-test.sh and manual
confirmation from bug reporter that bug has gone

Change-Id: Ia27b5ee8c0c2cffff37f2c652d8cdc41e1f22a32
parent f776b75e
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+8 −4
Original line number Diff line number Diff line
@@ -2336,10 +2336,6 @@ OverlayfsCheckResult CheckOverlayfs() {
        return {.supported = false};
    }

    if (!use_override_creds) {
        return {.supported = true, ",userxattr"};
    }

    struct utsname uts;
    if (uname(&uts) == -1) {
        return {.supported = false};
@@ -2348,6 +2344,14 @@ OverlayfsCheckResult CheckOverlayfs() {
    if (sscanf(uts.release, "%d.%d", &major, &minor) != 2) {
        return {.supported = false};
    }

    if (!use_override_creds) {
        if (major > 5 || (major == 5 && minor >= 15)) {
            return {.supported = true, ",userxattr"};
        }
        return {.supported = true};
    }

    // Overlayfs available in the kernel, and patched for override_creds?
    if (access("/sys/module/overlay/parameters/override_creds", F_OK) == 0) {
        auto mount_flags = ",override_creds=off"s;