2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright 2019 Alex Richardson <arichardson@FreeBSD.org>
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory (Department of Computer Science and
8 * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
9 * DARPA SSITH research programme.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #ifndef _RTLD_AVOID_LIBC_DEPS_H_
35 #define _RTLD_AVOID_LIBC_DEPS_H_
37 #include <sys/cdefs.h>
38 #include <sys/types.h>
39 #include <sys/fcntl.h>
42 /* Avoid dependencies on libthr (used by closedir/opendir/readdir) */
43 #define __isthreaded 0
44 #define _pthread_mutex_lock(mtx) (void)0
45 #define _pthread_mutex_unlock(mtx) (void)0
46 #define _pthread_mutex_destroy(mtx) (void)0
47 #define __libc_interposing error, must not use this variable inside rtld
50 void __sys_exit(int) __dead2;
51 int __sys_fcntl(int, int, ...);
52 int __sys_fstat(int fd, struct stat *);
53 int __sys_fstatat(int, const char *, struct stat *, int);
54 int __sys___getcwd(char *, size_t);
55 int __sys_open(const char *, int, ...);
56 int __sys_openat(int, const char *, int, ...);
57 int __sys_sigprocmask(int, const sigset_t *, sigset_t *);
58 int __sys_thr_kill(long, int);
59 int __sys_thr_self(long *);
60 __ssize_t __sys_pread(int, void *, __size_t, __off_t);
61 __ssize_t __sys_read(int, void *, __size_t);
62 __ssize_t __sys_write(int, const void *, __size_t);
64 extern char* __progname;
65 const char *_getprogname(void);
66 int __getosreldate(void);
70 * Don't pull in any of the libc wrappers. Instead we use the system call
71 * directly inside RTLD to avoid pulling in __libc_interposing (which pulls
72 * in lots more object files).
74 #define close(fd) __sys_close(fd)
75 #define _close(fd) __sys_close(fd)
76 #define exit(status) __sys_exit(status)
77 #define _exit(status) __sys_exit(status)
78 #define fcntl(fd, cmd, arg) __sys_fcntl(fd, cmd, arg)
79 #define _fcntl(fd, cmd, arg) __sys_fcntl(fd, cmd, arg)
80 #define _fstat(fd, sb) __sys_fstat(fd, sb)
81 #define open(path, ...) __sys_open(path, __VA_ARGS__)
82 #define pread(fd, buf, nbytes, offset) __sys_pread(fd, buf, nbytes, offset)
83 #define read(fd, buf, nbytes) __sys_read(fd, buf, nbytes)
84 #define sigprocmask(how, set, oset) __sys_sigprocmask(how, set, oset)
85 #define strerror(errno) rtld_strerror(errno)
86 #define _write(fd, buf, nbytes) __sys_write(fd, buf, nbytes)
87 #define write(fd, buf, nbytes) __sys_write(fd, buf, nbytes)
89 #endif /* _RTLD_AVOID_LIBC_DEPS_H_ */