1: /*
2: * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: */
16:
17: #ifndef _DLFCN_H_
18: #define _DLFCN_H_
19:
20: /* Emulated functions. */
21: void *sudo_dlopen(const char *path, int mode);
22: int sudo_dlclose(void *handle);
23: void *sudo_dlsym(void *handle, const char *symbol);
24: char *sudo_dlerror(void);
25:
26: /* Map emulated functions to standard names. */
27: #define dlopen(p, m) sudo_dlopen(p, m)
28: #define dlclose(h) sudo_dlclose(h)
29: #define dlsym(h, s) sudo_dlsym(h, s)
30: #define dlerror() sudo_dlerror()
31:
32: /* Values for dlopen() mode. */
33: #define RTLD_LAZY 0x1
34: #define RTLD_NOW 0x2
35: #define RTLD_GLOBAL 0x4
36: #define RTLD_LOCAL 0x8
37:
38: /* Special handle arguments for dlsym(). */
39: #define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
40: #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
41: #define RTLD_SELF ((void *) -3) /* Search the caller itself. */
42:
43: #endif /* !_DLFCN_H_ */
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