Mercurial > gnulib
view lib/getfilecon.c @ 40206:770a5696761e
relocatable-prog: Use wrapper-free installation on Mac OS X, take 2.
This approach supports relocatable installation of shared libraries
which depend on other shared libraries from the same package.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Determine use_macos_tools.
If use_macos_tools is true, use reloc-ldflags and set LIBTOOL to be a
wrapper around the original LIBTOOL.
* build-aux/reloc-ldflags: Add support for Mac OS X, which uses the
token '@loader_path' instead of '$ORIGIN'.
* build-aux/libtool-reloc: New file.
* modules/relocatable-prog (Files): Add it.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes. Document the need to set the *_LDFLAGS of libraries.
RELOCATABLE_LIBRARY_PATH and RELOCATABLE_CONFIG_H_DIR should be set in
Makefile.am, not in configure.ac.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 04 Mar 2019 17:25:09 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* wrap getfilecon, lgetfilecon, and fgetfilecon Copyright (C) 2009-2019 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <https://www.gnu.org/licenses/>. */ /* written by Jim Meyering */ #include <config.h> #include <selinux/selinux.h> #include <sys/types.h> #include <errno.h> #include <string.h> /* FIXME: remove this once there is an errno-gnu module that guarantees the definition of ENODATA. */ #ifndef ENODATA # define ENODATA ENOTSUP #endif #undef getfilecon #undef lgetfilecon #undef fgetfilecon int getfilecon (char const *file, security_context_t *con); int lgetfilecon (char const *file, security_context_t *con); int fgetfilecon (int fd, security_context_t *con); /* getfilecon, lgetfilecon, and fgetfilecon can all misbehave, be it via an old version of libselinux where these would return 0 and set the result context to NULL, or via a modern kernel+lib operating on a file from a disk whose attributes were set by a kernel from around 2006. In that latter case, the functions return a length of 10 for the "unlabeled" context. Map both failures to a return value of -1, and set errno to ENOTSUP in the first case, and ENODATA in the latter. */ static int map_to_failure (int ret, security_context_t *con) { if (ret == 0) { errno = ENOTSUP; return -1; } if (ret == 10 && strcmp (*con, "unlabeled") == 0) { freecon (*con); *con = NULL; errno = ENODATA; return -1; } return ret; } int rpl_getfilecon (char const *file, security_context_t *con) { int ret = getfilecon (file, con); return map_to_failure (ret, con); } int rpl_lgetfilecon (char const *file, security_context_t *con) { int ret = lgetfilecon (file, con); return map_to_failure (ret, con); } int rpl_fgetfilecon (int fd, security_context_t *con) { int ret = fgetfilecon (fd, con); return map_to_failure (ret, con); }