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sudo-project
GitHub Repository: sudo-project/sudo
 Path: blob/main/src/sudo_edit.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) 2021 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_EDIT_H

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#define SUDO_EDIT_H

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/*

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 * Directory open flags for use with openat(2).

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 * Use O_SEARCH/O_PATH and/or O_DIRECTORY where possible.

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 */

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#if defined(O_SEARCH)

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# if defined(O_DIRECTORY)

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#  define DIR_OPEN_FLAGS	(O_SEARCH|O_DIRECTORY)

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# else

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#  define DIR_OPEN_FLAGS	(O_SEARCH)

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# endif

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#elif defined(O_PATH)

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# if defined(O_DIRECTORY)

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#  define DIR_OPEN_FLAGS	(O_PATH|O_DIRECTORY)

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# else

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#  define DIR_OPEN_FLAGS	(O_PATH)

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# endif

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#elif defined(O_DIRECTORY)

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# define DIR_OPEN_FLAGS		(O_RDONLY|O_DIRECTORY)

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#else

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# define DIR_OPEN_FLAGS		(O_RDONLY|O_NONBLOCK)

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#endif

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/* copy_file.c */

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int sudo_copy_file(const char *src, int src_fd, off_t src_len, const char *dst, int dst_fd, off_t dst_len);

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bool sudo_check_temp_file(int tfd, const char *tname, uid_t uid, struct stat *sb);

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/* edit_open.c */

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struct sudo_cred;

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void switch_user(uid_t euid, gid_t egid, int ngroups, GETGROUPS_T *groups);

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int sudo_edit_open(char *path, int oflags, mode_t mode, unsigned int sflags, const struct sudo_cred *user_cred, const struct sudo_cred *cur_cred);

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int dir_is_writable(int dfd, const struct sudo_cred *user_cred, const struct sudo_cred *cur_cred);

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bool sudo_edit_parent_valid(char *path, unsigned int sflags, const struct sudo_cred *user_cred, const struct sudo_cred *cur_cred);

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#endif /* SUDO_EDIT_H */

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