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fix: not umounting KSU-specific /system mounts

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This commit fixes the issue that ReZygisk would skip all "/system" mounts, and not only the ones made by modules, leaving unexpected mounts mounted in app processes. KernelSU itself create some mounts such as "/system/app", which need to be umounted. To fix that, we will check if they come from "/data/modules", and if so, skip and not umount. That's not needed in Magisk as it doesn't create such mounts as far as I am aware.
This commit is contained in:
ThePedroo
2025-04-23 13:55:22 -03:00
parent 2ff4cb6401
commit b24c74ac0d
1 changed files with 5 additions and 1 deletions
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6
zygiskd/src/utils.c
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@@ -639,7 +639,11 @@ enum mns_umount_state unmount_root(bool modules_only, struct root_impl impl) {
if (strncmp(mount.target, "/debug_ramdisk", strlen("/debug_ramdisk")) == 0)
should_unmount = true;
} else {
if (strncmp(mount.target, "/system/", strlen("/system/")) == 0) continue;
/* INFO: KernelSU has its own /system mounts, so we only skip the mount
if they are from a module, not KSU itself.
*/
if (strncmp(mount.target, "/system/", strlen("/system/")) == 0 &&
strncmp(mount.root, "/adb/modules", strlen("/adb/modules")) == 0) continue;
if (strcmp(mount.source, source_name) == 0) should_unmount = true;
if (strncmp(mount.root, "/adb/modules", strlen("/adb/modules")) == 0) should_unmount = true;