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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:46:30 +0000 |
| commit | b5896ba9f6047e7031e2bdee0622d543e11a6734 (patch) | |
| tree | fd7b460593a2fee1be579bec5697e6d887ea3421 /src/util/set_eugid.h | |
| parent | Initial commit. (diff) | |
| download | postfix-2f07919848e7bd4a084699d26e8821e3a00696d9.tar.xz postfix-2f07919848e7bd4a084699d26e8821e3a00696d9.zip | |
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/util/set_eugid.h')
| -rw-r--r-- | src/util/set_eugid.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/util/set_eugid.h b/src/util/set_eugid.h new file mode 100644 index 0000000..97a523e --- /dev/null +++ b/src/util/set_eugid.h @@ -0,0 +1,43 @@ +#ifndef _SET_EUGID_H_INCLUDED_ +#define _SET_EUGID_H_INCLUDED_ + +/*++ +/* NAME +/* set_eugid 3h +/* SUMMARY +/* set effective user and group attributes +/* SYNOPSIS +/* #include <set_eugid.h> +/* DESCRIPTION +/* .nf + + /* External interface. */ + +extern void set_eugid(uid_t, gid_t); + + /* + * The following macros open and close a block that runs at a different + * privilege level. To make mistakes with stray curly braces less likely, we + * shape the macros below as the head and tail of a do-while loop. + */ +#define SAVE_AND_SET_EUGID(uid, gid) do { \ + uid_t __set_eugid_uid = geteuid(); \ + gid_t __set_eugid_gid = getegid(); \ + set_eugid((uid), (gid)); + +#define RESTORE_SAVED_EUGID() \ + set_eugid(__set_eugid_uid, __set_eugid_gid); \ + } while (0) + +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* IBM T.J. Watson Research +/* P.O. Box 704 +/* Yorktown Heights, NY 10598, USA +/*--*/ + +#endif |