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/*
* Copyright (c) 2010, 2013 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _SUDO_DSO_H
#define _SUDO_DSO_H
/* Values for sudo_dso_load() mode. */
#define SUDO_DSO_LAZY 0x1
#define SUDO_DSO_NOW 0x2
#define SUDO_DSO_GLOBAL 0x4
#define SUDO_DSO_LOCAL 0x8
/* Special handle arguments for sudo_dso_findsym(). */
#define SUDO_DSO_NEXT ((void *)-1) /* Search subsequent objects. */
#define SUDO_DSO_DEFAULT ((void *)-2) /* Use default search algorithm. */
#define SUDO_DSO_SELF ((void *)-3) /* Search the caller itself. */
/* Internal structs for static linking of plugins. */
struct sudo_preload_symbol {
const char *name;
void *addr;
};
struct sudo_preload_table {
const char *path;
void *handle;
struct sudo_preload_symbol *symbols;
};
/* Public functions. */
char *sudo_dso_strerror(void);
int sudo_dso_unload(void *handle);
void *sudo_dso_findsym(void *handle, const char *symbol);
void *sudo_dso_load(const char *path, int mode);
void sudo_dso_preload_table(struct sudo_preload_table *table);
#endif /* _SUDO_DSO_H */
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