diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/assert.h | 16 | ||||
| -rw-r--r-- | include/fcntl.h | 18 | ||||
| -rw-r--r-- | include/libc-internal.h | 2 | ||||
| -rw-r--r-- | include/libc-symbols.h | 182 | ||||
| -rw-r--r-- | include/printf.h | 1 | ||||
| -rw-r--r-- | include/resolv.h | 2 | ||||
| -rw-r--r-- | include/sched.h | 1 | ||||
| -rw-r--r-- | include/signal.h | 2 | ||||
| -rw-r--r-- | include/stdlib.h | 3 | ||||
| -rw-r--r-- | include/string.h | 5 | ||||
| -rw-r--r-- | include/sys/poll.h | 2 | ||||
| -rw-r--r-- | include/sys/select.h | 2 | ||||
| -rw-r--r-- | include/sys/socket.h | 1 | ||||
| -rw-r--r-- | include/sys/statfs.h | 1 | ||||
| -rw-r--r-- | include/unistd.h | 37 | ||||
| -rw-r--r-- | include/wchar.h | 13 |
16 files changed, 234 insertions, 54 deletions
diff --git a/include/assert.h b/include/assert.h index 30afabf..780d7ae 100644 --- a/include/assert.h +++ b/include/assert.h @@ -1,10 +1,12 @@ #include <assert/assert.h> -extern void __assert_fail_internal (__const char *__assertion, - __const char *__file, - unsigned int __line, - __const char *__function) - __attribute__ ((__noreturn__)) attribute_hidden; -#if defined SHARED && !defined NOT_IN_libc -# define __assert_fail __assert_fail_internal +/* This prints an "Assertion failed" message and aborts. + In installed assert.h this is only conditionally declared, + so it has to be repeated here. */ +extern void __assert_fail (__const char *__assertion, __const char *__file, + unsigned int __line, __const char *__function) + __THROW __attribute__ ((__noreturn__)); + +#if !defined NOT_IN_libc || defined IS_IN_rtld +hidden_proto (__assert_fail) #endif diff --git a/include/fcntl.h b/include/fcntl.h index f14baf7..897fd60 100644 --- a/include/fcntl.h +++ b/include/fcntl.h @@ -3,23 +3,15 @@ /* Now define the internal interfaces. */ extern int __open64 (__const char *__file, int __oflag, ...); +libc_hidden_proto (__open64) extern int __libc_open64 (const char *file, int oflag, ...); extern int __libc_open (const char *file, int oflag, ...); +libc_hidden_proto (__libc_open) extern int __libc_fcntl (int fd, int cmd, ...); +libc_hidden_proto (__libc_fcntl) extern int __open (__const char *__file, int __oflag, ...); -extern int __open_internal (__const char *__file, int __oflag, ...) - attribute_hidden; +libc_hidden_proto (__open) extern int __fcntl (int __fd, int __cmd, ...); -extern int __fcntl_internal (int __fd, int __cmd, ...) attribute_hidden; - -#ifndef NOT_IN_libc -# define __fcntl(fd, cmd, args...) INTUSE(__fcntl) (fd, cmd, ##args) -# define __open(file, oflag, args...) INTUSE(__open) (file, oflag, ##args) -# ifdef SHARED -# define __libc_fcntl(fd, cmd, args...) __fcntl_internal (fd, cmd, ##args) -# define __libc_open(file, oflag, args...) \ - __open_internal (file, oflag, ##args) -# endif -#endif +libc_hidden_proto (__fcntl) #endif diff --git a/include/libc-internal.h b/include/libc-internal.h index 85afdc1..82eea8b 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -15,6 +15,7 @@ extern void __libc_global_ctors (void); /* Discover the tick frequency of the machine if something goes wrong, we return 0, an impossible hertz. */ extern int __profile_frequency (void); +libc_hidden_proto (__profile_frequency) /* Hooks for the instrumenting functions. */ extern void __cyg_profile_func_enter (void *this_fn, void *call_site); @@ -25,6 +26,7 @@ extern hp_timing_t __get_clockfreq (void); /* Free all allocated resources. */ extern void __libc_freeres (void); +libc_hidden_proto (__libc_freeres) /* Define and initialize `__progname' et. al. */ extern void __init_misc (int, char **, char **); diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 901458a..4734c50 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -381,4 +381,186 @@ # define INTVARDEF2(name, newname) #endif +/* The following macros are used for PLT bypassing within libc.so + (and if needed other libraries similarly). + First of all, you need to have the function prototyped somewhere, + say in foo/foo.h: + + int foo (int __bar); + + If calls to foo within libc.so should always go to foo defined in libc.so, + then in include/foo.h you add: + + libc_hidden_proto (foo) + + line and after the foo function definition: + + int foo (int __bar) + { + return __bar; + } + libc_hidden_def (foo) + + or + + int foo (int __bar) + { + return __bar; + } + libc_hidden_weak (foo) + + If foo is normally just an alias (strong or weak) of some other function, + you should use the normal strong_alias first, then add libc_hidden_def + or libc_hidden_weak: + + int baz (int __bar) + { + return __bar; + } + strong_alias (baz, foo) + libc_hidden_weak (foo) + + If the function should be internal to multiple objects, say ld.so and + libc.so, the best way is to use: + + #if !defined NOT_IN_libc || defined IS_IN_rtld + hidden_proto (foo) + #endif + + in include/foo.h and the normal macros at all function definitions + depending on what DSO they belong to. + + If versioned_symbol macro is used to define foo, + libc_hidden_ver macro should be used, as in: + + int __real_foo (int __bar) + { + return __bar; + } + versioned_symbol (libc, __real_foo, foo, GLIBC_2_1); + libc_hidden_ver (__real_foo, foo) */ + +#if defined SHARED && defined DO_VERSIONING \ + && defined HAVE_BROKEN_ALIAS_ATTRIBUTE +# ifndef __ASSEMBLER__ +# ifdef HAVE_BROKEN_VISIBILITY_ATTRIBUTE +# define __hidden_proto_hiddenattr +# else +# define __hidden_proto_hiddenattr attribute_hidden +# endif +# ifndef HAVE_BROKEN_ALIAS_ATTRIBUTE +# define hidden_proto(name) __hidden_proto (name, __GI_##name) +# else +# define hidden_proto(name) +# endif +# define __hidden_proto(name, internal) \ + __typeof (name) internal; \ + __typeof (name) name __asm__ (__hidden_asmname (#internal)) \ + __hidden_proto_hiddenattr; +# define __hidden_asmname(name) \ + __hidden_asmname1 (__USER_LABEL_PREFIX__, name) +# define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name) +# define __hidden_asmname2(prefix, name) #prefix name +# ifdef HAVE_ASM_SET_DIRECTIVE +# define __hidden_def1(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) +# else +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define __hidden_def1(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original) +# else +# define __hidden_def1(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# endif +# endif +# define __hidden_def2(...) #__VA_ARGS__ +# define __hidden_def3(...) __hidden_def2 (__VA_ARGS__) +# define hidden_def(name) \ + __asm__ (__hidden_def3 (__hidden_def1 (__GI_##name, name))); +# define hidden_ver(local, name) \ + __asm__ (__hidden_def3 (__hidden_def1 (local, __GI_##name))); +# ifdef HAVE_WEAK_SYMBOLS +# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE +# define __hidden_weak1(original, alias) \ + .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) +# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define __hidden_weak1(original, alias) \ + .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original) +# else +# define __hidden_weak1(original, alias) \ + .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# endif +# endif +# define hidden_weak(name) \ + __asm__ (__hidden_def3 (__hidden_weak1 (__GI_##name, name))); +# else +# define hidden_weak(name) hidden_def (name) +# endif +# else +/* For assembly, we need to do the opposite of what we do in C: + in assembly gcc __REDIRECT stuff is not in place, so functions + are defined by its normal name and we need to create the + __GI_* alias to it, in C __REDIRECT causes the function definition + to use __GI_* name and we need to add alias to the real name. + hidden_proto and hidden_weak don't make sense for assembly. */ +# define hidden_def(name) strong_alias (name, __GI_##name) +# define hidden_ver(local, name) strong_alias (local, __GI_##name) +# endif +#else +# ifndef __ASSEMBLY__ +# define hidden_proto(name) +# define hidden_weak(name) +# endif +# define hidden_def(name) +# define hidden_ver(local, name) +#endif + +#if !defined NOT_IN_libc && !defined HAVE_BROKEN_ALIAS_ATTRIBUTE +# define libc_hidden_proto(name) hidden_proto (name) +# define libc_hidden_def(name) hidden_def (name) +# define libc_hidden_weak(name) hidden_weak (name) +# define libc_hidden_ver(local, name) hidden_ver (local, name) +#else +# define libc_hidden_proto(name) +# define libc_hidden_def(name) +# define libc_hidden_weak(name) +# define libc_hidden_ver(local, name) +#endif + +#if defined NOT_IN_libc && defined IS_IN_rtld \ + && !defined HAVE_BROKEN_ALIAS_ATTRIBUTE +# define rtld_hidden_proto(name) hidden_proto (name) +# define rtld_hidden_def(name) hidden_def (name) +# define rtld_hidden_weak(name) hidden_weak (name) +# define rtld_hidden_ver(local, name) hidden_ver (local, name) +#else +# define rtld_hidden_proto(name) +# define rtld_hidden_def(name) +# define rtld_hidden_weak(name) +# define rtld_hidden_ver(local, name) +#endif + +#if defined NOT_IN_libc && defined IS_IN_libm \ + && !defined HAVE_BROKEN_ALIAS_ATTRIBUTE +# define libm_hidden_proto(name) hidden_proto (name) +# define libm_hidden_def(name) hidden_def (name) +# define libm_hidden_weak(name) hidden_weak (name) +# define libm_hidden_ver(local, name) hidden_ver (local, name) +#else +# define libm_hidden_proto(name) +# define libm_hidden_def(name) +# define libm_hidden_weak(name) +# define libm_hidden_ver(local, name) +#endif + #endif /* libc-symbols.h */ diff --git a/include/printf.h b/include/printf.h index a025eac..c0bd2d2 100644 --- a/include/printf.h +++ b/include/printf.h @@ -7,5 +7,6 @@ extern int __printf_fphex (FILE *, const struct printf_info *, const void *const *); extern int __printf_fp (FILE *, const struct printf_info *, const void *const *); +libc_hidden_proto (__printf_fp) #endif diff --git a/include/resolv.h b/include/resolv.h index 6d7008b..8ad713e 100644 --- a/include/resolv.h +++ b/include/resolv.h @@ -40,6 +40,8 @@ extern void res_send_setqhook (res_send_qhook __hook); extern void res_send_setrhook (res_send_rhook __hook); extern int res_ourserver_p (const res_state __statp, const struct sockaddr_in6 *__inp); +libc_hidden_proto (__res_ninit) +libc_hidden_proto (__res_randomid) #endif #endif diff --git a/include/sched.h b/include/sched.h index a7894c5..26ff9c2 100644 --- a/include/sched.h +++ b/include/sched.h @@ -7,6 +7,7 @@ extern int __sched_setparam (__pid_t __pid, extern int __sched_getparam (__pid_t __pid, struct sched_param *__param); extern int __sched_setscheduler (__pid_t __pid, int __policy, __const struct sched_param *__param); +libc_hidden_proto (__sched_setscheduler) extern int __sched_getscheduler (__pid_t __pid); extern int __sched_yield (void); extern int __sched_get_priority_max (int __algorithm); diff --git a/include/signal.h b/include/signal.h index 0f7eb85..c2f72fa 100644 --- a/include/signal.h +++ b/include/signal.h @@ -9,11 +9,13 @@ extern __sighandler_t __bsd_signal (int __sig, __sighandler_t __handler); extern int __kill (__pid_t __pid, int __sig); extern int __sigaction (int __sig, __const struct sigaction *__restrict __act, struct sigaction *__restrict __oact); +libc_hidden_proto (__sigaction) extern int __sigblock (int __mask); extern int __sigsetmask (int __mask); extern int __sigprocmask (int __how, __const sigset_t *__set, sigset_t *__oset); extern int __sigsuspend (__const sigset_t *__set); +libc_hidden_proto (__sigsuspend) extern int __sigwait (__const sigset_t *__set, int *__sig); extern int __sigwaitinfo (__const sigset_t *__set, siginfo_t *__info); extern int __sigtimedwait (__const sigset_t *__set, siginfo_t *__info, diff --git a/include/stdlib.h b/include/stdlib.h index f4e6d30..ad9ea8e 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -8,6 +8,9 @@ /* Now define the internal interfaces. */ #ifndef __Need_M_And_C + +libc_hidden_proto (__secure_getenv) + extern long int __random (void); extern void __srandom (unsigned int __seed); extern char *__initstate (unsigned int __seed, char *__statebuf, diff --git a/include/string.h b/include/string.h index 8dda2f1..d2062c7 100644 --- a/include/string.h +++ b/include/string.h @@ -60,3 +60,8 @@ extern char *__strerror_r (int __errnum, char *__buf, size_t __buflen); (char *) memcpy (__new, __old, __len); \ })) #endif + +libc_hidden_proto (__mempcpy) +libc_hidden_proto (__stpncpy) +libc_hidden_proto (__rawmemchr) +libc_hidden_proto (__strcasecmp) diff --git a/include/sys/poll.h b/include/sys/poll.h index d7d6e01..7d12e1c 100644 --- a/include/sys/poll.h +++ b/include/sys/poll.h @@ -3,4 +3,6 @@ extern int __poll (struct pollfd *__fds, unsigned long int __nfds, int __timeout); +libc_hidden_proto (__poll) + #endif diff --git a/include/sys/select.h b/include/sys/select.h index 583149c..2e5901c 100644 --- a/include/sys/select.h +++ b/include/sys/select.h @@ -11,4 +11,6 @@ extern int __select (int __nfds, fd_set *__restrict __readfds, fd_set *__restrict __writefds, fd_set *__restrict __exceptfds, struct timeval *__restrict __timeout); +libc_hidden_proto (__select) + #endif diff --git a/include/sys/socket.h b/include/sys/socket.h index 9ea37c7..3aaaab5 100644 --- a/include/sys/socket.h +++ b/include/sys/socket.h @@ -27,6 +27,7 @@ extern int __getpeername (int __fd, __SOCKADDR_ARG __addr, /* Send N bytes of BUF to socket FD. Returns the number sent or -1. */ extern ssize_t __send (int __fd, __const void *__buf, size_t __n, int __flags); +libc_hidden_proto (__send) /* Send N bytes of BUF on socket FD to peer at address ADDR (which is ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */ diff --git a/include/sys/statfs.h b/include/sys/statfs.h index 1df3d8c..80786a7 100644 --- a/include/sys/statfs.h +++ b/include/sys/statfs.h @@ -3,6 +3,7 @@ /* Now define the internal interfaces. */ extern int __statfs (__const char *__file, struct statfs *__buf); +libc_hidden_proto (__statfs) extern int __fstatfs (int __fildes, struct statfs *__buf); extern int __statfs64 (__const char *__file, struct statfs64 *__buf); extern int __fstatfs64 (int __fildes, struct statfs64 *__buf); diff --git a/include/unistd.h b/include/unistd.h index 00fa95b..b25a3b8 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -22,17 +22,19 @@ extern ssize_t __libc_pwrite (int __fd, __const void *__buf, size_t __n, __off_t __offset); extern ssize_t __pwrite64 (int __fd, __const void *__buf, size_t __n, __off64_t __offset); +libc_hidden_proto (__pwrite64) extern ssize_t __libc_pwrite64 (int __fd, __const void *__buf, size_t __n, __off64_t __offset); extern ssize_t __libc_read (int __fd, void *__buf, size_t __n); +libc_hidden_proto (__libc_read) extern ssize_t __libc_write (int __fd, __const void *__buf, size_t __n); +libc_hidden_proto (__libc_write) extern int __pipe (int __pipedes[2]); +libc_hidden_proto (__pipe) extern unsigned int __sleep (unsigned int __seconds); extern int __chown (__const char *__file, __uid_t __owner, __gid_t __group); -extern int __chown_internal (__const char *__file, - __uid_t __owner, __gid_t __group) - attribute_hidden; +libc_hidden_proto (__chown) extern int __fchown (int __fd, __uid_t __owner, __gid_t __group); extern int __lchown (__const char *__file, __uid_t __owner, @@ -54,14 +56,14 @@ char *__canonicalize_directory_name_internal (__const char *__thisdir, extern int __dup (int __fd); extern int __dup2 (int __fd, int __fd2); -extern int __dup2_internal (int __fd, int __fd2) attribute_hidden; +libc_hidden_proto (__dup2) extern int __execve (__const char *__path, char *__const __argv[], char *__const __envp[]); extern long int __pathconf (__const char *__path, int __name); extern long int __fpathconf (int __fd, int __name); extern long int __sysconf (int __name); extern __pid_t __getpid (void); -extern __pid_t __getpid_internal (void) attribute_hidden; +libc_hidden_proto (__getpid) extern __pid_t __getppid (void); extern __pid_t __setsid (void); extern __uid_t __getuid (void); @@ -69,12 +71,13 @@ extern __uid_t __geteuid (void); extern __gid_t __getgid (void); extern __gid_t __getegid (void); extern int __getgroups (int __size, __gid_t __list[]); -extern __pid_t __getpgid_internal (__pid_t __pid) attribute_hidden; +libc_hidden_proto (__getpgid) extern int __group_member (__gid_t __gid); extern int __setuid (__uid_t __uid); extern int __setreuid (__uid_t __ruid, __uid_t __euid); extern int __setgid (__gid_t __gid); extern int __setpgid (__pid_t __pid, __pid_t __pgid); +libc_hidden_proto (__setpgid) extern int __setregid (__gid_t __rgid, __gid_t __egid); extern __pid_t __vfork (void); extern int __ttyname_r (int __fd, char *__buf, size_t __buflen); @@ -89,18 +92,18 @@ extern int __profil (unsigned short int *__sample_buffer, size_t __size, extern int __getdtablesize (void); extern int __brk (void *__addr); extern int __close (int __fd); -extern int __close_internal (int __fd) attribute_hidden; +libc_hidden_proto (__close) extern ssize_t __read (int __fd, void *__buf, size_t __nbytes); +libc_hidden_proto (__read) extern ssize_t __write (int __fd, __const void *__buf, size_t __n); -extern ssize_t __write_internal (int __fd, __const void *__buf, size_t __n) - attribute_hidden; +libc_hidden_proto (__write) extern __pid_t __fork (void); extern int __getpagesize (void) __attribute__ ((__const__)); -extern int __getpagesize_internal (void) - __attribute__ ((__const__)) attribute_hidden; +libc_hidden_proto (__getpagesize) extern int __ftruncate (int __fd, __off_t __length); extern int __ftruncate64 (int __fd, __off64_t __length); extern void *__sbrk (intptr_t __delta); +libc_hidden_proto (__sbrk) /* This variable is set nonzero at startup if the process's effective @@ -118,16 +121,4 @@ extern int __libc_enable_secure_internal attribute_hidden; /* Various internal function. */ extern void __libc_check_standard_fds (void); - -#ifndef NOT_IN_libc -# define __close(fd) INTUSE(__close) (fd) -# define __dup2(fd, fd2) INTUSE(__dup2) (fd, fd2) -# define __getpagesize() INTUSE(__getpagesize) () -# define __getpgid(pid) INTUSE(__getpgid) (pid) -# define __getpid() INTUSE(__getpid) () -# ifdef SHARED -# define __libc_write(fd, buf, n) INTUSE(__write) (fd, buf, n) -# endif -#endif - #endif diff --git a/include/wchar.h b/include/wchar.h index c5bdf4d..461b740 100644 --- a/include/wchar.h +++ b/include/wchar.h @@ -18,12 +18,8 @@ extern int __mbsinit (__const __mbstate_t *__ps); extern size_t __mbrtowc (wchar_t *__restrict __pwc, __const char *__restrict __s, size_t __n, __mbstate_t *__restrict __p); -extern size_t __mbrtowc_internal (wchar_t *__restrict __pwc, - __const char *__restrict __s, size_t __n, - __mbstate_t *__restrict __p) - attribute_hidden; -extern size_t __mbrlen_internal (__const char *__restrict __s, size_t __n, - mbstate_t *__restrict __ps) attribute_hidden; +libc_hidden_proto (__mbrtowc) +libc_hidden_proto (__mbrlen) extern size_t __wcrtomb (char *__restrict __s, wchar_t __wc, __mbstate_t *__restrict __ps); extern size_t __mbsrtowcs (wchar_t *__restrict __dst, @@ -68,10 +64,5 @@ extern int __vfwprintf (__FILE *__restrict __s, __gnuc_va_list __arg) /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */; -# ifndef NOT_IN_libc -# define __mbrlen(s, n, ps) INTUSE(__mbrlen) (s, n, ps) -# define __mbrtowc(pwc, s, n, p) INTUSE(__mbrtowc) (pwc, s, n, p) -# endif - # endif #endif |