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Kernel: fix filp_open in kernel below 4.9 #822

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Aug 1, 2023
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Kernel: fix filp_open in kernel below 4.9 #822

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4 changes: 1 addition & 3 deletions kernel/kernel_compat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -77,12 +77,10 @@ void ksu_android_ns_fs_check()
struct file *ksu_filp_open_compat(const char *filename, int flags, umode_t mode)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
static bool keyring_installed = false;
if (init_session_keyring != NULL && !keyring_installed &&
if (init_session_keyring != NULL && !current_cred()->session_keyring &&
(current->flags & PF_WQ_WORKER)) {
pr_info("installing init session keyring for older kernel\n");
install_session_keyring(init_session_keyring);
keyring_installed = true;
}
#endif
// switch mnt_ns even if current is not wq_worker, to ensure what we open is the correct file in android mnt_ns, rather than user created mnt_ns
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