Prep v221: Update and clean up build system to sync with upstream

[elogind.git] / src / shared / memfd-util.c

diff --git a/src/shared/memfd-util.c b/src/shared/memfd-util.c
deleted file mode 100644 (file)
index e99a738..0000000
--- a/src/shared/memfd-util.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2013 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <sys/prctl.h>
-
-#ifdef HAVE_LINUX_MEMFD_H
-#  include <linux/memfd.h>
-#endif
-
-#include "util.h"
-#include "memfd-util.h"
-#include "utf8.h"
-#include "missing.h"
-
-int memfd_new(const char *name) {
-        _cleanup_free_ char *g = NULL;
-        int fd;
-
-        if (!name) {
-                char pr[17] = {};
-
-                /* If no name is specified we generate one. We include
-                 * a hint indicating our library implementation, and
-                 * add the thread name to it */
-
-                assert_se(prctl(PR_GET_NAME, (unsigned long) pr) >= 0);
-
-                if (isempty(pr))
-                        name = "sd";
-                else {
-                        _cleanup_free_ char *e = NULL;
-
-                        e = utf8_escape_invalid(pr);
-                        if (!e)
-                                return -ENOMEM;
-
-                        g = strappend("sd-", e);
-                        if (!g)
-                                return -ENOMEM;
-
-                        name = g;
-                }
-        }
-
-        fd = memfd_create(name, MFD_ALLOW_SEALING | MFD_CLOEXEC);
-        if (fd < 0)
-                return -errno;
-
-        return fd;
-}
-
-int memfd_map(int fd, uint64_t offset, size_t size, void **p) {
-        void *q;
-        int sealed;
-
-        assert(fd >= 0);
-        assert(size > 0);
-        assert(p);
-
-        sealed = memfd_get_sealed(fd);
-        if (sealed < 0)
-                return sealed;
-
-        if (sealed)
-                q = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, offset);
-        else
-                q = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, offset);
-
-        if (q == MAP_FAILED)
-                return -errno;
-
-        *p = q;
-        return 0;
-}
-
-int memfd_set_sealed(int fd) {
-        int r;
-
-        assert(fd >= 0);
-
-        r = fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
-        if (r < 0)
-                return -errno;
-
-        return 0;
-}
-
-int memfd_get_sealed(int fd) {
-        int r;
-
-        assert(fd >= 0);
-
-        r = fcntl(fd, F_GET_SEALS);
-        if (r < 0)
-                return -errno;
-
-        return r == (F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
-}
-
-int memfd_get_size(int fd, uint64_t *sz) {
-        struct stat stat;
-        int r;
-
-        assert(fd >= 0);
-        assert(sz);
-
-        r = fstat(fd, &stat);
-        if (r < 0)
-                return -errno;
-
-        *sz = stat.st_size;
-        return 0;
-}
-
-int memfd_set_size(int fd, uint64_t sz) {
-        int r;
-
-        assert(fd >= 0);
-
-        r = ftruncate(fd, sz);
-        if (r < 0)
-                return -errno;
-
-        return 0;
-}
-
-int memfd_new_and_map(const char *name, size_t sz, void **p) {
-        _cleanup_close_ int fd = -1;
-        int r;
-
-        assert(sz > 0);
-        assert(p);
-
-        fd = memfd_new(name);
-        if (fd < 0)
-                return fd;
-
-        r = memfd_set_size(fd, sz);
-        if (r < 0)
-                return r;
-
-        r = memfd_map(fd, 0, sz, p);
-        if (r < 0)
-                return r;
-
-        r = fd;
-        fd = -1;
-
-        return r;
-}