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kernel: Remove redundant ksu_handle_inode_permission hooks, calling only for manual_su

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This commit is contained in:
ShirkNeko
2025-11-13 15:02:20 +08:00
parent 722fd6c756
commit cb344d8546
5 changed files with 36 additions and 72 deletions
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32
kernel/syscall_hook_manager.c
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@@ -208,7 +208,6 @@ static inline bool check_syscall_fastpath(int nr)
case __NR_faccessat:
case __NR_execve:
case __NR_setresuid:
case __NR_faccessat2:
case __NR_clone:
case __NR_clone3:
return true;
@@ -235,38 +234,13 @@ int ksu_handle_init_mark_tracker(const char __user **filename_user,
return 0;
}
#include "ksud.h"
#ifdef CONFIG_KSU_MANUAL_SU
#include "manual_su.h"
#endif
#ifndef LOOKUP_FOLLOW
#define LOOKUP_FOLLOW 0x0001
#endif
static inline void ksu_handle_inode_permission(struct pt_regs *regs)
{
struct inode *inode = NULL;
struct path path;
int dfd = (int)PT_REGS_PARM1(regs);
const char __user *filename = (const char __user *)PT_REGS_PARM2(regs);
if (!user_path_at(dfd, filename, LOOKUP_FOLLOW, &path)) {
inode = path.dentry->d_inode;
if (inode && inode->i_sb &&
unlikely(inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC))
__ksu_handle_devpts(inode);
path_put(&path);
}
}
static inline void ksu_handle_task_alloc(struct pt_regs *regs)
{
#ifdef CONFIG_KSU_MANUAL_SU
ksu_try_escalate_for_uid(current_uid().val);
#endif
}
#endif
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
// Generic sys_enter handler that dispatches to specific handlers
@@ -318,10 +292,6 @@ static void ksu_sys_enter_handler(void *data, struct pt_regs *regs, long id)
return;
}
// Handle inode_permission via faccessat
if (id == __NR_faccessat || id == __NR_faccessat2)
return ksu_handle_inode_permission(regs);
#ifdef CONFIG_KSU_MANUAL_SU
// Handle task_alloc via clone/fork
if (id == __NR_clone || id == __NR_clone3)