zenithsiz/ftmemsim-valgrind
1
0
Fork 0
mirror of https://github.com/Zenithsiz/ftmemsim-valgrind.git synced 2026-02-04 02:18:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
ftmemsim-valgrind/coregrind/m_syswrap/priv_syswrap-linux.h
Alexandra Hájková b0861063a8 Add support for preadv2 and pwritev2 syscalls 
Support for amd64, x86 - 64 and 32 bit, arm64, ppc64, ppc64le,
s390x, mips64. This should work identically on all
arches, tested on x86 32bit and 64bit one, but enabled on all.

Refactor the code to be reusable between old/new syscalls. Resolve TODO
items in the code. Add the testcase for the preadv2/pwritev2 and also
add the (similar) testcase for the older preadv/pwritev syscalls.

Trying to test handling an uninitialized flag argument for the v2 syscalls
does not work because the flag always comes out as defined zero.
Turns out glibc does this deliberately on 64bit architectures because
the kernel does actually have a low_offset and high_offset argument, but
ignores the high_offset/assumes it is zero.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=601cc11d054ae4b5e9b5babec3d8e4667a2cb9b5

https://bugs.kde.org/408414
2019-07-03 00:19:16 +02:00

470 lines
18 KiB
C
Raw Blame History

/*--------------------------------------------------------------------*/
/*--- Linux-specific syscalls stuff. priv_syswrap-linux.h ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2017 Nicholas Nethercote
njn@valgrind.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
The GNU General Public License is contained in the file COPYING.
*/
#ifndef __PRIV_SYSWRAP_LINUX_H
#define __PRIV_SYSWRAP_LINUX_H
#include "pub_core_basics.h" // ThreadId
#include "priv_types_n_macros.h" // DECL_TEMPLATE
// Clone-related functions
extern Word ML_(start_thread_NORETURN) ( void* arg );
extern Addr ML_(allocstack) ( ThreadId tid );
extern void ML_(call_on_new_stack_0_1) ( Addr stack, Addr retaddr,
void (*f)(Word), Word arg1 );
// Linux-specific (but non-arch-specific) syscalls
DECL_TEMPLATE(linux, sys_clone)
DECL_TEMPLATE(linux, sys_mount);
DECL_TEMPLATE(linux, sys_oldumount);
DECL_TEMPLATE(linux, sys_umount);
DECL_TEMPLATE(linux, sys_perf_event_open);
DECL_TEMPLATE(linux, sys_preadv);
DECL_TEMPLATE(linux, sys_preadv2);
DECL_TEMPLATE(linux, sys_pwritev);
DECL_TEMPLATE(linux, sys_pwritev2);
DECL_TEMPLATE(linux, sys_sendmmsg);
DECL_TEMPLATE(linux, sys_recvmmsg);
DECL_TEMPLATE(linux, sys_dup3);
DECL_TEMPLATE(linux, sys_getcpu);
DECL_TEMPLATE(linux, sys_splice);
DECL_TEMPLATE(linux, sys_tee);
DECL_TEMPLATE(linux, sys_vmsplice);
DECL_TEMPLATE(linux, sys_readahead);
DECL_TEMPLATE(linux, sys_move_pages);
// clone is similar enough between linux variants to have a generic
// version, but which will call an extern defined in syswrap-<platform>-linux.c
DECL_TEMPLATE(linux, sys_clone);
// POSIX, but various sub-cases differ between Linux and Darwin.
DECL_TEMPLATE(linux, sys_fcntl);
DECL_TEMPLATE(linux, sys_fcntl64);
DECL_TEMPLATE(linux, sys_ioctl);
DECL_TEMPLATE(linux, sys_setfsuid16);
DECL_TEMPLATE(linux, sys_setfsuid);
DECL_TEMPLATE(linux, sys_setfsgid16);
DECL_TEMPLATE(linux, sys_setfsgid);
DECL_TEMPLATE(linux, sys_setresuid16); // man page says "non-standard";
DECL_TEMPLATE(linux, sys_setresuid); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_getresuid16);
DECL_TEMPLATE(linux, sys_getresuid);
DECL_TEMPLATE(linux, sys_setresgid16); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_setresgid); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_getresgid16);
DECL_TEMPLATE(linux, sys_getresgid);
DECL_TEMPLATE(linux, sys_exit_group);
DECL_TEMPLATE(linux, sys_llseek);
DECL_TEMPLATE(linux, sys_adjtimex);
DECL_TEMPLATE(linux, sys_ioperm);
DECL_TEMPLATE(linux, sys_syslog);
DECL_TEMPLATE(linux, sys_vhangup);
DECL_TEMPLATE(linux, sys_sysinfo);
DECL_TEMPLATE(linux, sys_personality);
DECL_TEMPLATE(linux, sys_pivot_root);
DECL_TEMPLATE(linux, sys_sysctl);
DECL_TEMPLATE(linux, sys_prctl);
DECL_TEMPLATE(linux, sys_sendfile);
DECL_TEMPLATE(linux, sys_sendfile64);
DECL_TEMPLATE(linux, sys_futex);
DECL_TEMPLATE(linux, sys_set_robust_list);
DECL_TEMPLATE(linux, sys_get_robust_list);
DECL_TEMPLATE(linux, sys_pselect6);
DECL_TEMPLATE(linux, sys_ppoll);
DECL_TEMPLATE(linux, sys_epoll_create);
DECL_TEMPLATE(linux, sys_epoll_create1);
DECL_TEMPLATE(linux, sys_epoll_ctl);
DECL_TEMPLATE(linux, sys_epoll_wait);
DECL_TEMPLATE(linux, sys_epoll_pwait);
DECL_TEMPLATE(linux, sys_eventfd);
DECL_TEMPLATE(linux, sys_eventfd2);
DECL_TEMPLATE(linux, sys_fallocate);
DECL_TEMPLATE(linux, sys_prlimit64);
DECL_TEMPLATE(linux, sys_gettid);
DECL_TEMPLATE(linux, sys_set_tid_address);
DECL_TEMPLATE(linux, sys_tkill);
DECL_TEMPLATE(linux, sys_tgkill);
DECL_TEMPLATE(linux, sys_fadvise64);
DECL_TEMPLATE(linux, sys_fadvise64_64);
DECL_TEMPLATE(linux, sys_io_setup);
DECL_TEMPLATE(linux, sys_io_destroy);
DECL_TEMPLATE(linux, sys_io_getevents);
DECL_TEMPLATE(linux, sys_io_submit);
DECL_TEMPLATE(linux, sys_io_cancel);
DECL_TEMPLATE(linux, sys_ioprio_set);
DECL_TEMPLATE(linux, sys_ioprio_get);
DECL_TEMPLATE(linux, sys_mbind);
DECL_TEMPLATE(linux, sys_set_mempolicy);
DECL_TEMPLATE(linux, sys_get_mempolicy);
DECL_TEMPLATE(linux, sys_inotify_init);
DECL_TEMPLATE(linux, sys_inotify_init1);
DECL_TEMPLATE(linux, sys_inotify_add_watch);
DECL_TEMPLATE(linux, sys_inotify_rm_watch);
DECL_TEMPLATE(linux, sys_mq_open);
DECL_TEMPLATE(linux, sys_mq_unlink);
DECL_TEMPLATE(linux, sys_mq_timedsend);
DECL_TEMPLATE(linux, sys_mq_timedreceive);
DECL_TEMPLATE(linux, sys_mq_notify);
DECL_TEMPLATE(linux, sys_mq_getsetattr);
DECL_TEMPLATE(linux, sys_clock_settime);
DECL_TEMPLATE(linux, sys_clock_gettime);
DECL_TEMPLATE(linux, sys_clock_getres);
DECL_TEMPLATE(linux, sys_clock_nanosleep);
DECL_TEMPLATE(linux, sys_clock_adjtime);
DECL_TEMPLATE(linux, sys_timer_create); // Linux: varies across archs?
DECL_TEMPLATE(linux, sys_timer_settime);
DECL_TEMPLATE(linux, sys_timer_gettime);
DECL_TEMPLATE(linux, sys_timer_getoverrun);
DECL_TEMPLATE(linux, sys_timer_delete);
DECL_TEMPLATE(linux, sys_timerfd_create);
DECL_TEMPLATE(linux, sys_timerfd_gettime);
DECL_TEMPLATE(linux, sys_timerfd_settime);
DECL_TEMPLATE(linux, sys_signalfd);
DECL_TEMPLATE(linux, sys_signalfd4);
DECL_TEMPLATE(linux, sys_capget);
DECL_TEMPLATE(linux, sys_capset);
DECL_TEMPLATE(linux, sys_openat);
DECL_TEMPLATE(linux, sys_mkdirat);
DECL_TEMPLATE(linux, sys_mknodat);
DECL_TEMPLATE(linux, sys_fchownat);
DECL_TEMPLATE(linux, sys_futimesat);
DECL_TEMPLATE(linux, sys_newfstatat);
DECL_TEMPLATE(linux, sys_unlinkat);
DECL_TEMPLATE(linux, sys_renameat);
DECL_TEMPLATE(linux, sys_renameat2);
DECL_TEMPLATE(linux, sys_linkat);
DECL_TEMPLATE(linux, sys_symlinkat);
DECL_TEMPLATE(linux, sys_readlinkat);
DECL_TEMPLATE(linux, sys_fchmodat);
DECL_TEMPLATE(linux, sys_faccessat);
DECL_TEMPLATE(linux, sys_utimensat);
DECL_TEMPLATE(linux, sys_name_to_handle_at);
DECL_TEMPLATE(linux, sys_open_by_handle_at);
DECL_TEMPLATE(linux, sys_add_key);
DECL_TEMPLATE(linux, sys_request_key);
DECL_TEMPLATE(linux, sys_keyctl);
// These ones have 32-bit generic equivalents, but the 16-bit versions (they
// use 16-bit gid_t and uid_t types) seem to be Linux-specific.
DECL_TEMPLATE(linux, sys_getuid16);
DECL_TEMPLATE(linux, sys_setuid16);
DECL_TEMPLATE(linux, sys_getgid16);
DECL_TEMPLATE(linux, sys_setgid16);
DECL_TEMPLATE(linux, sys_geteuid16);
DECL_TEMPLATE(linux, sys_getegid16);
DECL_TEMPLATE(linux, sys_setreuid16);
DECL_TEMPLATE(linux, sys_setregid16);
DECL_TEMPLATE(linux, sys_getgroups16);
DECL_TEMPLATE(linux, sys_setgroups16);
// Again, these 16-bit versions are Linux-specific, the 32-bit versions are
// generic.
DECL_TEMPLATE(linux, sys_chown16);
DECL_TEMPLATE(linux, sys_fchown16);
//DECL_TEMPLATE(linux, sys_lchown16); // not yet encountered
// Are these POSIX? In Darwin they have an extra parameter 'position',
// so put them here.
DECL_TEMPLATE(linux, sys_setxattr);
DECL_TEMPLATE(linux, sys_lsetxattr);
DECL_TEMPLATE(linux, sys_fsetxattr);
DECL_TEMPLATE(linux, sys_getxattr);
DECL_TEMPLATE(linux, sys_lgetxattr);
DECL_TEMPLATE(linux, sys_fgetxattr);
DECL_TEMPLATE(linux, sys_listxattr);
DECL_TEMPLATE(linux, sys_llistxattr);
DECL_TEMPLATE(linux, sys_flistxattr);
DECL_TEMPLATE(linux, sys_removexattr);
DECL_TEMPLATE(linux, sys_lremovexattr);
DECL_TEMPLATE(linux, sys_fremovexattr);
// These are Posix, but not necessarily syscalls. Darwin only supports
// sched_get_priority_{min,max} and sched_yield, but as libc functions, not
// syscalls.
DECL_TEMPLATE(linux, sys_sched_setparam);
DECL_TEMPLATE(linux, sys_sched_getparam);
DECL_TEMPLATE(linux, sys_sched_setscheduler);
DECL_TEMPLATE(linux, sys_sched_getscheduler);
DECL_TEMPLATE(linux, sys_sched_yield);
DECL_TEMPLATE(linux, sys_sched_get_priority_max);
DECL_TEMPLATE(linux, sys_sched_get_priority_min);
DECL_TEMPLATE(linux, sys_sched_rr_get_interval);
DECL_TEMPLATE(linux, sys_sched_setaffinity);
DECL_TEMPLATE(linux, sys_sched_getaffinity);
DECL_TEMPLATE(linux, sys_unshare);
// These ones have different parameters and/or return values on Darwin.
// Also, some archs on Linux do not match the generic wrapper for sys_pipe.
DECL_TEMPLATE(linux, sys_munlockall);
DECL_TEMPLATE(linux, sys_pipe);
DECL_TEMPLATE(linux, sys_pipe2);
DECL_TEMPLATE(linux, sys_quotactl);
DECL_TEMPLATE(linux, sys_waitid);
// Posix, but in Darwin utime is a libc function that calls syscall utimes.
DECL_TEMPLATE(linux, sys_utime);
// On Darwin, off_t is 64-bits even on 32-bit platforms.
DECL_TEMPLATE(linux, sys_lseek);
// Darwin (and probably other OSes) don't have the old_sigset_t type.
DECL_TEMPLATE(linux, sys_sigpending);
DECL_TEMPLATE(linux, sys_sigprocmask);
DECL_TEMPLATE(linux, sys_sigaction);
// I think these are Linux-specific?
DECL_TEMPLATE(linux, sys_rt_sigaction);
DECL_TEMPLATE(linux, sys_rt_sigprocmask);
DECL_TEMPLATE(linux, sys_rt_sigpending);
DECL_TEMPLATE(linux, sys_rt_sigtimedwait);
DECL_TEMPLATE(linux, sys_rt_sigqueueinfo);
DECL_TEMPLATE(linux, sys_rt_tgsigqueueinfo);
DECL_TEMPLATE(linux, sys_rt_sigsuspend);
// Linux-specific?
DECL_TEMPLATE(linux, sys_sync_file_range);
DECL_TEMPLATE(linux, sys_sync_file_range2);
DECL_TEMPLATE(linux, sys_stime); /* maybe generic? I'm not sure */
// Linux specific (kernel modules)
DECL_TEMPLATE(linux, sys_init_module);
DECL_TEMPLATE(linux, sys_finit_module);
DECL_TEMPLATE(linux, sys_delete_module);
// Linux-specific (oprofile-related)
DECL_TEMPLATE(linux, sys_lookup_dcookie); // (*/32/64) L
// Linux-specific (new in Linux 3.2)
DECL_TEMPLATE(linux, sys_process_vm_readv);
DECL_TEMPLATE(linux, sys_process_vm_writev);
// Linux-specific (new in Linux 2.6.36)
DECL_TEMPLATE(linux, sys_fanotify_init);
DECL_TEMPLATE(linux, sys_fanotify_mark);
// Linux-specific (new in Linux 3.17)
DECL_TEMPLATE(linux, sys_getrandom);
DECL_TEMPLATE(linux, sys_memfd_create);
DECL_TEMPLATE(linux, sys_syncfs);
DECL_TEMPLATE(linux, sys_membarrier);
// Linux-specific (new in Linux 3.18)
DECL_TEMPLATE(linux, sys_bpf);
// Linux-specific (new in Linux 4.11)
DECL_TEMPLATE(linux, sys_statx);
// Linux-specific memory protection key syscalls (since Linux 4.9)
DECL_TEMPLATE(linux, sys_pkey_alloc);
DECL_TEMPLATE(linux, sys_pkey_free);
DECL_TEMPLATE(linux, sys_pkey_mprotect);
// Linux io_uring system calls. See also commit 2b188cc1bb85 ("Add io_uring IO
// interface") # v5.1. See also commit edafccee56ff ("io_uring: add support
// for pre-mapped user IO buffers") # v5.1.
DECL_TEMPLATE(linux, sys_io_uring_setup);
DECL_TEMPLATE(linux, sys_io_uring_enter);
DECL_TEMPLATE(linux, sys_io_uring_register);
/* ---------------------------------------------------------------------
Wrappers for sockets and ipc-ery. These are split into standalone
procedures because x86-linux hides them inside multiplexors
(sys_socketcall and sys_ipc).
------------------------------------------------------------------ */
#define TId ThreadId
#define UW UWord
#define SR SysRes
extern void ML_(linux_PRE_sys_msgsnd) ( TId, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_msgrcv) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_msgrcv) ( TId, UW, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_msgctl) ( TId, UW, UW, UW );
extern void ML_(linux_POST_sys_msgctl) ( TId, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_getsockopt) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_getsockopt) ( TId, SR, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_setsockopt) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_recvmmsg) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_recvmmsg) ( TId, UW, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_sendmmsg) ( TId, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_sendmmsg) ( TId, UW, UW, UW, UW, UW );
// Linux-specific (but non-arch-specific) ptrace wrapper helpers
extern void ML_(linux_PRE_getregset) ( ThreadId, long, long );
extern void ML_(linux_PRE_setregset) ( ThreadId, long, long );
extern void ML_(linux_POST_traceme) ( ThreadId );
extern void ML_(linux_POST_getregset)( ThreadId, long, long );
#undef TId
#undef UW
#undef SR
/* sys_ipc and sys_socketcall are multiplexors which implements several syscalls.
Used e.g. by x86, ppc32, ppc64, ... */
DECL_TEMPLATE(linux, sys_ipc);
DECL_TEMPLATE(linux, sys_socketcall);
/* Depending on the platform, the below are implemented as
direct syscalls or via the above sys_socketcall multiplexor. */
/* Direct ipc related syscalls. */
/* Semaphore */
DECL_TEMPLATE(linux, sys_semget);
DECL_TEMPLATE(linux, sys_semop);
DECL_TEMPLATE(linux, sys_semctl);
DECL_TEMPLATE(linux, sys_semtimedop);
/* Shared memory */
DECL_TEMPLATE(linux, sys_shmat);
DECL_TEMPLATE(linux, sys_shmget);
DECL_TEMPLATE(linux, sys_shmdt);
DECL_TEMPLATE(linux, sys_shmctl);
/* Message queue */
DECL_TEMPLATE(linux, sys_msgget);
DECL_TEMPLATE(linux, sys_msgrcv);
DECL_TEMPLATE(linux, sys_msgsnd);
DECL_TEMPLATE(linux, sys_msgctl);
/* Direct socket related syscalls. */
DECL_TEMPLATE(linux, sys_socket);
DECL_TEMPLATE(linux, sys_setsockopt);
DECL_TEMPLATE(linux, sys_getsockopt);
DECL_TEMPLATE(linux, sys_connect);
DECL_TEMPLATE(linux, sys_accept);
DECL_TEMPLATE(linux, sys_accept4);
DECL_TEMPLATE(linux, sys_send);
DECL_TEMPLATE(linux, sys_sendto);
DECL_TEMPLATE(linux, sys_recv);
DECL_TEMPLATE(linux, sys_recvfrom);
DECL_TEMPLATE(linux, sys_sendmsg);
DECL_TEMPLATE(linux, sys_recvmsg);
DECL_TEMPLATE(linux, sys_shutdown);
DECL_TEMPLATE(linux, sys_bind);
DECL_TEMPLATE(linux, sys_listen);
DECL_TEMPLATE(linux, sys_getsockname);
DECL_TEMPLATE(linux, sys_getpeername);
DECL_TEMPLATE(linux, sys_socketpair);
DECL_TEMPLATE(linux, sys_kcmp);
DECL_TEMPLATE(linux, sys_copy_file_range);
// Some arch specific functions called from syswrap-linux.c
extern Int do_syscall_clone_x86_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern SysRes ML_(x86_sys_set_thread_area) ( ThreadId tid,
vki_modify_ldt_t* info );
extern void ML_(x86_setup_LDT_GDT) ( /*OUT*/ ThreadArchState *child,
/*IN*/ ThreadArchState *parent );
extern Long do_syscall_clone_amd64_linux ( Word (*fn)(void *),
void* stack,
Long flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern ULong do_syscall_clone_ppc32_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern ULong do_syscall_clone_ppc64_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_s390x_linux ( void *stack,
ULong flags,
Int *parent_tid,
Int *child_tid,
void* tls_ptr,
Word (*fn)(void *),
void *arg);
extern Long do_syscall_clone_arm64_linux ( Word (*fn)(void *),
void* stack,
Long flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_arm_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_mips64_linux ( Word (*fn) (void *), /* a0 - 4 */
void* stack, /* a1 - 5 */
Int flags, /* a2 - 6 */
void* arg, /* a3 - 7 */
Int* parent_tid, /* a4 - 8 */
void* tls_ptr, /* a5 - 9 */
Int* child_tid ); /* a6 - 10 */
extern UInt do_syscall_clone_mips_linux ( Word (*fn) (void *), //a0 0 32
void* stack, //a1 4 36
Int flags, //a2 8 40
void* arg, //a3 12 44
Int* child_tid, //stack 16 48
Int* parent_tid, //stack 20 52
void* tls_ptr); //stack 24 56
#endif // __PRIV_SYSWRAP_LINUX_H
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
Reference in New Issue View Git Blame Copy Permalink