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sudo-project
GitHub Repository: sudo-project/sudo
 Path: blob/main/include/sudo_dso.h
1532 views
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/*

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 * SPDX-License-Identifier: ISC

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 *

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 * Copyright (c) 2010, 2013, 2014 Todd C. Miller <[email protected]>

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 *

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 * Permission to use, copy, modify, and distribute this software for any

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 * purpose with or without fee is hereby granted, provided that the above

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 * copyright notice and this permission notice appear in all copies.

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 *

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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 */

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#ifndef SUDO_DSO_H

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#define SUDO_DSO_H

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/* Values for sudo_dso_load() mode. */

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#define SUDO_DSO_LAZY	 0x1

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#define SUDO_DSO_NOW	 0x2

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#define SUDO_DSO_GLOBAL	 0x4

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#define SUDO_DSO_LOCAL	 0x8

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/* Special handle arguments for sudo_dso_findsym(). */

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#define SUDO_DSO_NEXT	 ((void *)-1)	/* Search subsequent objects. */

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#define SUDO_DSO_DEFAULT ((void *)-2)	/* Use default search algorithm. */

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#define SUDO_DSO_SELF	 ((void *)-3)	/* Search the caller itself. */

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/* Internal structs for static linking of plugins. */

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struct sudo_preload_symbol {

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    const char *name;

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    void *addr;

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};

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struct sudo_preload_table {

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    const char *path;

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    void *handle;

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    struct sudo_preload_symbol *symbols;

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};

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/* Public functions. */

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sudo_dso_public char *sudo_dso_strerror_v1(void);

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sudo_dso_public int sudo_dso_unload_v1(void *handle);

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sudo_dso_public void *sudo_dso_findsym_v1(void *handle, const char *symbol);

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sudo_dso_public void *sudo_dso_load_v1(const char *path, int mode);

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sudo_dso_public void sudo_dso_preload_table_v1(struct sudo_preload_table *table);

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#define sudo_dso_strerror() sudo_dso_strerror_v1()

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#define sudo_dso_unload(_a) sudo_dso_unload_v1((_a))

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#define sudo_dso_findsym(_a, _b) sudo_dso_findsym_v1((_a), (_b))

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#define sudo_dso_load(_a, _b) sudo_dso_load_v1((_a), (_b))

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#define sudo_dso_preload_table(_a) sudo_dso_preload_table_v1((_a))

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#endif /* SUDO_DSO_H */

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