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Annotation of src/include/dlfcn.h, Revision 1.16

1.16    ! tb          1: /*     $OpenBSD: dlfcn.h,v 1.15 2021/06/02 07:29:03 semarie Exp $      */
1.1       deraadt     2: /*     $NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 1995 Paul Kranenburg
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *      This product includes software developed by Paul Kranenburg.
                     19:  * 4. The name of the author may not be used to endorse or promote products
1.6       deraadt    20:  *    derived from this software without specific prior written permission
1.1       deraadt    21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     25:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     26:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     27:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     28:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     29:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     30:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     31:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32:  */
                     33:
                     34: #ifndef _DLFCN_H_
                     35: #define _DLFCN_H_
                     36:
                     37: #include <sys/cdefs.h>
                     38:
                     39: /* Values for dlopen `mode'. */
1.8       drahn      40: #define RTLD_LAZY      1
                     41: #define RTLD_NOW       2
                     42: #define RTLD_GLOBAL    0x100
                     43: #define RTLD_LOCAL     0x000
1.11      jason      44: #define RTLD_TRACE     0x200
1.15      semarie    45: #define RTLD_NODELETE  0x400
1.16    ! tb         46: #define RTLD_NOLOAD    0x800
1.9       drahn      47:
                     48: /*
                     49:  * Special handle arguments for dlsym().
                     50:  */
                     51: #define        RTLD_NEXT       ((void *) -1)   /* Search subsequent objects. */
                     52: #define        RTLD_DEFAULT    ((void *) -2)   /* Use default search algorithm. */
                     53: #define        RTLD_SELF       ((void *) -3)   /* Search the caller itself. */
1.1       deraadt    54:
1.12      guenther   55: #if __BSD_VISIBLE
                     56:
                     57: /*
                     58:  * Structure filled in by dladdr().
                     59:  */
                     60: typedef        struct dl_info {
                     61:        const char      *dli_fname;     /* Pathname of shared object. */
                     62:        void            *dli_fbase;     /* Base address of shared object. */
                     63:        const char      *dli_sname;     /* Name of nearest symbol. */
                     64:        void            *dli_saddr;     /* Address of nearest symbol. */
                     65: } Dl_info;
                     66:
1.1       deraadt    67: /*
                     68:  * dlctl() commands
                     69:  */
                     70: #define DL_GETERRNO    1
                     71: #define DL_SETSRCHPATH x
                     72: #define DL_GETLIST     x
                     73: #define DL_GETREFCNT   x
                     74: #define DL_GETLOADADDR x
1.7       marc       75: #define DL_SETTHREADLCK        2
1.10      drahn      76: #define DL_SETBINDLCK  3
1.14      kettenis   77: #define DL_REFERENCE   4
1.12      guenther   78:
                     79: #define        DL_LAZY         RTLD_LAZY       /* Compat */
                     80:
                     81: #endif /* __BSD_VISIBLE */
                     82:
                     83:
                     84: /*
                     85:  * User interface to the run-time linker.
                     86:  */
                     87: __BEGIN_DECLS
                     88: void   *dlopen(const char *, int);
                     89: int    dlclose(void *);
                     90: void   *dlsym(void *__restrict, const char *__restrict);
1.13      deraadt    91: char   *dlerror(void);
1.12      guenther   92:
                     93: #if __BSD_VISIBLE
                     94: int    dladdr(const void *, Dl_info *);
                     95: int    dlctl(void *, int, void *);
                     96: #endif /* __BSD_VISIBLE */
                     97:
                     98: __END_DECLS
1.1       deraadt    99:
                    100: #endif /* _DLFCN_H_ */