mirror of
https://github.com/ClickHouse/ClickHouse.git
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295 lines
6.4 KiB
C
295 lines
6.4 KiB
C
/** This library provides runtime instrumentation (hardening)
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* that ensures no "harmful" functions from libc are called
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* (by terminating the program immediately).
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*/
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/// It is only enabled in debug build (its intended use is for CI checks).
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#if !defined(NDEBUG)
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#if defined(__clang__)
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#pragma clang diagnostic ignored "-Wincompatible-library-redeclaration"
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#else
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#pragma GCC diagnostic ignored "-Wbuiltin-declaration-mismatch"
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#endif
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/// We cannot use libc headers here.
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long write(int, const void *, unsigned long);
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#define TRAP(func) void func() { write(2, #func "\n", __builtin_strlen(#func) + 1); __builtin_trap(); }
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/// Trap all non thread-safe functions:
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/// nm -D /lib/x86_64-linux-gnu/{libc.so.6,libdl.so.2,libm.so.6,libpthread.so.0,librt.so.1,libnss_dns.so.2,libresolv.so.2} | grep -P '_r@?$' | awk '{ print $3 }' | sed -r -e 's/_r//' | grep -vP '^_'
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/// See also https://reviews.llvm.org/D90944
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/// You can edit this list and even comment out some functions.
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/// The only purpose of the library is to force you to pay attention.
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TRAP(argp_error)
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TRAP(argp_help)
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TRAP(argp_parse)
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TRAP(argp_state_help)
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TRAP(argp_usage)
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TRAP(asctime)
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TRAP(clearenv)
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TRAP(crypt)
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TRAP(ctime)
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TRAP(cuserid)
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TRAP(drand48)
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TRAP(ecvt)
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TRAP(encrypt)
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TRAP(endfsent)
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TRAP(endgrent)
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TRAP(endhostent)
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TRAP(endnetent)
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TRAP(endnetgrent)
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TRAP(endprotoent)
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TRAP(endpwent)
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TRAP(endservent)
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TRAP(endutent)
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TRAP(endutxent)
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TRAP(erand48)
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TRAP(error_at_line)
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///TRAP(exit)
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TRAP(fcloseall)
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TRAP(fcvt)
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TRAP(fgetgrent)
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TRAP(fgetpwent)
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TRAP(gammal)
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TRAP(getchar_unlocked)
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TRAP(getdate)
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TRAP(getfsent)
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TRAP(getfsfile)
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TRAP(getfsspec)
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TRAP(getgrent)
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TRAP(getgrent_r)
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TRAP(getgrgid)
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TRAP(getgrnam)
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TRAP(gethostbyaddr)
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TRAP(gethostbyname)
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TRAP(gethostbyname2)
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TRAP(gethostent)
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TRAP(getlogin)
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TRAP(getmntent)
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TRAP(getnetbyaddr)
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TRAP(getnetbyname)
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TRAP(getnetent)
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TRAP(getnetgrent)
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TRAP(getnetgrent_r)
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TRAP(getopt)
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TRAP(getopt_long)
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TRAP(getopt_long_only)
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TRAP(getpass)
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TRAP(getprotobyname)
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TRAP(getprotobynumber)
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TRAP(getprotoent)
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TRAP(getpwent)
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TRAP(getpwent_r)
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TRAP(getpwnam)
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TRAP(getpwuid)
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TRAP(getservbyname)
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TRAP(getservbyport)
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TRAP(getservent)
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TRAP(getutent)
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TRAP(getutent_r)
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TRAP(getutid)
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TRAP(getutid_r)
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TRAP(getutline)
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TRAP(getutline_r)
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TRAP(getutxent)
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TRAP(getutxid)
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TRAP(getutxline)
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TRAP(getwchar_unlocked)
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//TRAP(glob)
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//TRAP(glob64)
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TRAP(gmtime)
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TRAP(hcreate)
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TRAP(hdestroy)
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TRAP(hsearch)
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TRAP(innetgr)
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TRAP(jrand48)
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TRAP(l64a)
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TRAP(lcong48)
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TRAP(lgammafNx)
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TRAP(localeconv)
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TRAP(localtime)
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TRAP(login)
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TRAP(login_tty)
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TRAP(logout)
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TRAP(logwtmp)
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TRAP(lrand48)
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TRAP(mallinfo)
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#if !defined(SANITIZER)
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TRAP(mallopt) // Used by tsan
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#endif
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TRAP(mblen)
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TRAP(mbrlen)
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TRAP(mbrtowc)
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TRAP(mbsnrtowcs)
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TRAP(mbsrtowcs)
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//TRAP(mbtowc) // Used by Standard C++ library
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TRAP(mcheck)
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TRAP(mprobe)
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TRAP(mrand48)
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TRAP(mtrace)
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TRAP(muntrace)
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TRAP(nrand48)
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TRAP(__ppc_get_timebase_freq)
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TRAP(ptsname)
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TRAP(putchar_unlocked)
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TRAP(putenv)
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TRAP(pututline)
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TRAP(pututxline)
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TRAP(putwchar_unlocked)
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TRAP(qecvt)
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TRAP(qfcvt)
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TRAP(register_printf_function)
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TRAP(seed48)
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//TRAP(setenv)
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TRAP(setfsent)
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TRAP(setgrent)
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TRAP(sethostent)
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TRAP(sethostid)
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TRAP(setkey)
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//TRAP(setlocale) // Used by replxx at startup
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TRAP(setlogmask)
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TRAP(setnetent)
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TRAP(setnetgrent)
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TRAP(setprotoent)
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TRAP(setpwent)
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TRAP(setservent)
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TRAP(setutent)
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TRAP(setutxent)
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TRAP(siginterrupt)
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TRAP(sigpause)
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//TRAP(sigprocmask)
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TRAP(sigsuspend)
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TRAP(sleep)
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TRAP(srand48)
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//TRAP(strerror) // Used by RocksDB and many other libraries, unfortunately.
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//TRAP(strsignal) // This function is imported from Musl and is thread safe.
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TRAP(strtok)
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TRAP(tcflow)
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TRAP(tcsendbreak)
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TRAP(tmpnam)
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TRAP(ttyname)
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TRAP(unsetenv)
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TRAP(updwtmp)
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TRAP(utmpname)
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TRAP(utmpxname)
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//TRAP(valloc)
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TRAP(vlimit)
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//TRAP(wcrtomb) // Used by Standard C++ library
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TRAP(wcsnrtombs)
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TRAP(wcsrtombs)
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TRAP(wctomb)
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TRAP(basename)
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TRAP(catgets)
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TRAP(dbm_clearerr)
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TRAP(dbm_close)
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TRAP(dbm_delete)
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TRAP(dbm_error)
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TRAP(dbm_fetch)
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TRAP(dbm_firstkey)
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TRAP(dbm_nextkey)
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TRAP(dbm_open)
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TRAP(dbm_store)
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TRAP(dirname)
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// TRAP(dlerror) // It is not thread-safe. But it is used by dynamic linker to load some name resolution plugins. Also used by TSan.
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/// Note: we should better get rid of glibc, dynamic linking and all that sort of annoying garbage altogether.
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TRAP(ftw)
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TRAP(getc_unlocked)
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//TRAP(getenv) // Ok at program startup
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TRAP(inet_ntoa)
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TRAP(lgamma)
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TRAP(lgammaf)
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TRAP(lgammal)
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TRAP(nftw)
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TRAP(nl_langinfo)
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TRAP(putc_unlocked)
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TRAP(rand)
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/** In the current POSIX.1 specification (POSIX.1-2008), readdir() is not required to be thread-safe. However, in modern
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* implementations (including the glibc implementation), concurrent calls to readdir() that specify different directory streams
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* are thread-safe. In cases where multiple threads must read from the same directory stream, using readdir() with external
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* synchronization is still preferable to the use of the deprecated readdir_r(3) function. It is expected that a future
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* version of POSIX.1 will require that readdir() be thread-safe when concurrently employed on different directory streams.
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* - man readdir
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*/
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//TRAP(readdir)
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TRAP(system)
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TRAP(wcstombs)
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TRAP(ether_aton)
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TRAP(ether_ntoa)
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TRAP(fgetsgent)
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TRAP(fgetspent)
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TRAP(getaliasbyname)
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TRAP(getaliasent)
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TRAP(getrpcbyname)
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TRAP(getrpcbynumber)
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TRAP(getrpcent)
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TRAP(getsgent)
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TRAP(getsgnam)
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TRAP(getspent)
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TRAP(getspnam)
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TRAP(initstate)
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TRAP(random)
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TRAP(setstate)
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TRAP(sgetsgent)
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TRAP(sgetspent)
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TRAP(srandom)
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TRAP(twalk)
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TRAP(lgammaf128)
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TRAP(lgammaf32)
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TRAP(lgammaf32x)
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TRAP(lgammaf64)
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TRAP(lgammaf64x)
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/// These functions are unused by ClickHouse and we should be aware if they are accidentally get used.
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/// Sometimes people report that these function contain vulnerabilities (these reports are bogus for ClickHouse).
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TRAP(mq_close)
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TRAP(mq_getattr)
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TRAP(mq_setattr)
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TRAP(mq_notify)
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TRAP(mq_open)
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TRAP(mq_receive)
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TRAP(mq_send)
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TRAP(mq_unlink)
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TRAP(mq_timedsend)
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TRAP(mq_timedreceive)
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/// These functions are also unused by ClickHouse.
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TRAP(wordexp)
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TRAP(wordfree)
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/// C11 threading primitives are not supported by ThreadSanitizer.
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/// Also we should avoid using them for compatibility with old libc.
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TRAP(thrd_create)
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TRAP(thrd_equal)
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TRAP(thrd_current)
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TRAP(thrd_sleep)
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TRAP(thrd_yield)
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TRAP(thrd_exit)
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TRAP(thrd_detach)
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TRAP(thrd_join)
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TRAP(mtx_init)
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TRAP(mtx_lock)
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TRAP(mtx_timedlock)
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TRAP(mtx_trylock)
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TRAP(mtx_unlock)
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TRAP(mtx_destroy)
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TRAP(call_once)
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TRAP(cnd_init)
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TRAP(cnd_signal)
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TRAP(cnd_broadcast)
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TRAP(cnd_wait)
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TRAP(cnd_timedwait)
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TRAP(cnd_destroy)
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TRAP(tss_create)
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TRAP(tss_get)
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TRAP(tss_set)
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TRAP(tss_delete)
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#endif
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