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[skip ci] kernel: minor changes on ksu_sys_umount

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* Simplify value for 'ret', adding some comments

Signed-off-by: rsuntk <rsuntk@yukiprjkt.my.id>
This commit is contained in:
rsuntk
2025-06-09 22:16:29 +07:00
committed by ShirkNeko
parent 5d36d1a801
commit 9cbfe80640
1 changed files with 7 additions and 4 deletions
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9
kernel/core_hook.c
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@@ -983,16 +983,19 @@ static void ksu_path_umount(const char *mnt, struct path *path, int flags)
pr_info("%s: path: %s ret: %d\n", __func__, mnt, err); pr_info("%s: path: %s ret: %d\n", __func__, mnt, err);
} }
#else #else
// TODO: Search a way to make this works without set_fs functions
static void ksu_sys_umount(const char *mnt, int flags) static void ksu_sys_umount(const char *mnt, int flags)
{ {
char __user *usermnt = (char __user *)mnt; char __user *usermnt = (char __user *)mnt;
mm_segment_t old_fs;
int ret; // although asmlinkage long
mm_segment_t old_fs = get_fs(); old_fs = get_fs();
set_fs(KERNEL_DS); set_fs(KERNEL_DS);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0) #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0)
int ret = ksys_umount(usermnt, flags); ret = ksys_umount(usermnt, flags);
#else #else
long ret = sys_umount(usermnt, flags); // cuz asmlinkage long sys##name ret = sys_umount(usermnt, flags); // cuz asmlinkage long sys##name
#endif #endif
set_fs(old_fs); set_fs(old_fs);
pr_info("%s: path: %s ret: %d \n", __func__, usermnt, ret); pr_info("%s: path: %s ret: %d \n", __func__, usermnt, ret);