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/** @file @brief File system call hooks table and definitions @details Copyright (c) 2017-2022 Acronis International GmbH @author Mikhail Molchanov (Mikhail.Molchanov@acronis.com) @since $Id: $ / #pragma once #include "syscall_utils.h" #include <linux/compat.h> // for compat_ptr() and compat types #include <linux/uio.h> // for 'struct iovec' #define DEFINE_SYSCALL_TYPE(...) \ DEFINE_SYSCALL_HOOK_TYPE(__VA_ARGS__); \ DEFINE_SYSCALL_ORIG_TYPE(__VA_ARGS__) // typedefs of 'ordinary' syscall hooks: DEFINE_SYSCALL_TYPE(sys, creat, 2, const char __user , pathname, umode_t, mode); DEFINE_SYSCALL_TYPE(sys, open, 3, const char __user , filename, int, flags, umode_t, mode); DEFINE_SYSCALL_TYPE(sys, openat, 4, int, dfd, const char __user , filename, int, flags, umode_t, mode); DEFINE_SYSCALL_TYPE(sys, close, 1, unsigned int, fd); DEFINE_SYSCALL_TYPE(sys, read, 3, unsigned int, fd, char __user , buf, size_t, count); DEFINE_SYSCALL_TYPE(sys, readv, 3, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen); DEFINE_SYSCALL_TYPE(sys, pread64, 4, unsigned int, fd, char __user , buf, size_t, count, loff_t, pos); DEFINE_SYSCALL_TYPE(sys, preadv, 5, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h); DEFINE_SYSCALL_TYPE(sys, preadv2, 6, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, int, flags); DEFINE_SYSCALL_TYPE(sys, write, 3, unsigned int, fd, const char __user , buf, size_t, count); DEFINE_SYSCALL_TYPE(sys, pwrite64, 4, unsigned int, fd, const char __user , buf, size_t, count, loff_t, pos); // FIXME: all 'writev()' funcs have 'unsigned long fd', not 'unsigned int fd' DEFINE_SYSCALL_TYPE(sys, writev, 3, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen); DEFINE_SYSCALL_TYPE(sys, pwritev, 5, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h); DEFINE_SYSCALL_TYPE(sys, pwritev2, 6, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, int, flags); DEFINE_SYSCALL_TYPE(sys, rename, 2, const char __user , oldname, const char __user , newname); DEFINE_SYSCALL_TYPE(sys, renameat, 4, int, olddfd, const char __user , oldname, int, newdfd, const char __user , newname); DEFINE_SYSCALL_TYPE(sys, renameat2, 5, int, olddfd, const char __user ,oldname, int, newdfd, const char __user ,newname, unsigned int, flags); DEFINE_SYSCALL_TYPE(sys, unlink, 1, const char __user , pathname); DEFINE_SYSCALL_TYPE(sys, unlinkat, 3, int, dfd, const char __user , pathname, int, flag); // Note: many 'ia32' hooks have the same 'type' as 'x86_64' hooks #define DEFINE_SYSCALL_HOOK_TYPE_ALIAS(abi1, abi2, tag) \ typedef SYSCALL_HOOK_TYPE_NAME(abi2, tag) SYSCALL_HOOK_TYPE_NAME(abi1, tag) #define DEFINE_SYSCALL_ORIG_TYPE_ALIAS(abi1, abi2, tag) \ typedef SYSCALL_ORIG_TYPE_NAME(abi2, tag) SYSCALL_ORIG_TYPE_NAME(abi1, tag) #define DEFINE_SYSCALL_TYPE_ALIAS(...) \ DEFINE_SYSCALL_HOOK_TYPE_ALIAS(__VA_ARGS__); \ DEFINE_SYSCALL_ORIG_TYPE_ALIAS(__VA_ARGS__) DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, creat); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, open); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, openat); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, close); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, write); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, rename); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, renameat); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, renameat2); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, unlink); DEFINE_SYSCALL_TYPE_ALIAS(ia32_sys, sys, unlinkat); #define DEFINE_COMPAT_SYSCALL_TYPE(...) \ DEFINE_COMPAT_SYSCALL_HOOK_TYPE(__VA_ARGS__); \ DEFINE_COMPAT_SYSCALL_ORIG_TYPE(__VA_ARGS__) // typedefs of 'compat' syscall hooks (no need for 'ia32' here, cause their typedefs are the same as 'ordinary' ones): // 'sys32_pread()' in Linux source code DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, pread64, 5, unsigned int, fd, const char __user , ubuf, u32, count, u32, poslo, u32, poshi); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, readv, 3, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, preadv, 5, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen, u32, pos_low, u32, pos_high); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, preadv2, 6, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen, u32, pos_low, u32, pos_high, int, flags); // typedefs of 'compat' syscall hooks (no need for 'ia32' here, cause their typedefs are the same as 'ordinary' ones): // 'sys32_pwrite()' in Linux source code DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, pwrite64, 5, unsigned int, fd, const char __user , ubuf, u32, count, u32, poslo, u32, poshi); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, writev, 3, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, pwritev, 5, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen, u32, pos_low, u32, pos_high); DEFINE_COMPAT_SYSCALL_TYPE(compat_sys, pwritev2, 6, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen, u32, pos_low, u32, pos_high, int, flags); // declarations of 'ordinary' syscall hooks: DECLARE_SYSCALL_HOOK(sys, creat, 2, const char __user , pathname, umode_t, mode); DECLARE_SYSCALL_HOOK(sys, open, 3, const char __user , filename, int, flags, umode_t, mode); DECLARE_SYSCALL_HOOK(sys, openat, 4, int, dfd, const char __user , filename, int, flags, umode_t, mode); DECLARE_SYSCALL_HOOK(sys, close, 1, unsigned int, fd); DECLARE_SYSCALL_HOOK(sys, read, 3, unsigned int, fd, char __user , buf, size_t, count); DECLARE_SYSCALL_HOOK(sys, pread64, 4, unsigned int, fd, char __user , buf, size_t, count, loff_t, pos); DECLARE_SYSCALL_HOOK(sys, readv, 3, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen); DECLARE_SYSCALL_HOOK(sys, preadv, 5, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h); DECLARE_SYSCALL_HOOK(sys, preadv2, 6, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, int, flags); DECLARE_SYSCALL_HOOK(sys, write, 3, unsigned int, fd, const char __user , buf, size_t, count); DECLARE_SYSCALL_HOOK(sys, pwrite64, 4, unsigned int, fd, const char __user , buf, size_t, count, loff_t, pos); DECLARE_SYSCALL_HOOK(sys, writev, 3, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen); DECLARE_SYSCALL_HOOK(sys, pwritev, 5, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h); DECLARE_SYSCALL_HOOK(sys, pwritev2, 6, unsigned long, fd, const struct iovec __user , vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, int, flags); DECLARE_SYSCALL_HOOK(sys, rename, 2, const char __user , oldname, const char __user , newname); DECLARE_SYSCALL_HOOK(sys, renameat, 4, int, olddfd, const char __user , oldname, int, newdfd, const char __user , newname); DECLARE_SYSCALL_HOOK(sys, renameat2, 5, int, olddfd, const char __user , oldname, int, newdfd, const char __user , newname, unsigned int, flags); DECLARE_SYSCALL_HOOK(sys, unlink, 1, const char __user , pathname); DECLARE_SYSCALL_HOOK(sys, unlinkat, 3, int, dfd, const char __user , pathname, int, flag); // declarations of 'ia32' and 'compat' syscall hooks: DECLARE_SYSCALL_HOOK(ia32_sys, creat, 2, const char __user , pathname, umode_t, mode); DECLARE_SYSCALL_HOOK(ia32_sys, open, 3, const char __user , filename, int, flags, umode_t, mode); DECLARE_SYSCALL_HOOK(ia32_sys, openat, 4, int, dfd, const char __user , filename, int, flags, umode_t, mode); DECLARE_SYSCALL_HOOK(ia32_sys, close, 1, unsigned int, fd); DECLARE_SYSCALL_HOOK(ia32_sys, read, 3, unsigned int, fd, char __user , buf, size_t, count); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, readv, 3, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, pread64, 5, unsigned int, fd, const char __user , ubuf, u32, count, u32, poslo, u32, poshi); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, preadv, 5, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen, u32, pos_low, u32, pos_high); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, preadv2, 6, compat_ulong_t, fd, const struct compat_iovec __user , cvec, compat_ulong_t, cvlen, u32, pos_low, u32, pos_high, int, flags); DECLARE_SYSCALL_HOOK(ia32_sys, write, 3, unsigned int, fd, const char __user , buf, size_t, count); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, pwrite64, 5, unsigned int, fd, const char __user , ubuf, u32, count, u32, poslo, u32, poshi); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, writev, 3, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, pwritev, 5, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen, u32, pos_low, u32, pos_high); DECLARE_COMPAT_SYSCALL_HOOK(compat_sys, pwritev2, 6, compat_ulong_t, fd, const struct compat_iovec __user , vec, compat_ulong_t, vlen, u32, pos_low, u32, pos_high, int, flags); DECLARE_SYSCALL_HOOK(ia32_sys, rename, 2, const char __user , oldname, const char __user , newname); DECLARE_SYSCALL_HOOK(ia32_sys, renameat, 4, int, olddfd, const char __user , oldname, int, newdfd, const char __user , newname); DECLARE_SYSCALL_HOOK(ia32_sys, renameat2, 5, int, olddfd, const char __user , oldname, int, newdfd, const char __user , newname, unsigned int, flags); DECLARE_SYSCALL_HOOK(ia32_sys, unlink, 1, const char __user , pathname); DECLARE_SYSCALL_HOOK(ia32_sys, unlinkat, 3, int, dfd, const char __user , pathname, int, flag);