move libsystemd_core.la sources into core/

1 files changed, 0 insertions, 346 deletions

diff --git a/src/namespace.c b/src/namespace.c
deleted file mode 100644
index 09bc82909f..0000000000
--- a/src/namespace.c
+++ /dev/null
@@ -1,346 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd 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 2 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
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <sys/mount.h>
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sched.h>
-#include <sys/syscall.h>
-#include <limits.h>
-#include <linux/fs.h>
-
-#include "strv.h"
-#include "util.h"
-#include "namespace.h"
-#include "missing.h"
-
-typedef enum PathMode {
-        /* This is ordered by priority! */
-        INACCESSIBLE,
-        READONLY,
-        PRIVATE,
-        READWRITE
-} PathMode;
-
-typedef struct Path {
-        const char *path;
-        PathMode mode;
-} Path;
-
-static int append_paths(Path **p, char **strv, PathMode mode) {
-        char **i;
-
-        STRV_FOREACH(i, strv) {
-
-                if (!path_is_absolute(*i))
-                        return -EINVAL;
-
-                (*p)->path = *i;
-                (*p)->mode = mode;
-                (*p)++;
-        }
-
-        return 0;
-}
-
-static int path_compare(const void *a, const void *b) {
-        const Path *p = a, *q = b;
-
-        if (path_equal(p->path, q->path)) {
-
-                /* If the paths are equal, check the mode */
-                if (p->mode < q->mode)
-                        return -1;
-
-                if (p->mode > q->mode)
-                        return 1;
-
-                return 0;
-        }
-
-        /* If the paths are not equal, then order prefixes first */
-        if (path_startswith(p->path, q->path))
-                return 1;
-
-        if (path_startswith(q->path, p->path))
-                return -1;
-
-        return 0;
-}
-
-static void drop_duplicates(Path *p, unsigned *n, bool *need_inaccessible, bool *need_private) {
-        Path *f, *t, *previous;
-
-        assert(p);
-        assert(n);
-        assert(need_inaccessible);
-        assert(need_private);
-
-        for (f = p, t = p, previous = NULL; f < p+*n; f++) {
-
-                if (previous && path_equal(f->path, previous->path))
-                        continue;
-
-                t->path = f->path;
-                t->mode = f->mode;
-
-                if (t->mode == PRIVATE)
-                        *need_private = true;
-
-                if (t->mode == INACCESSIBLE)
-                        *need_inaccessible = true;
-
-                previous = t;
-
-                t++;
-        }
-
-        *n = t - p;
-}
-
-static int apply_mount(Path *p, const char *root_dir, const char *inaccessible_dir, const char *private_dir, unsigned long flags) {
-        const char *what;
-        char *where;
-        int r;
-
-        assert(p);
-        assert(root_dir);
-        assert(inaccessible_dir);
-        assert(private_dir);
-
-        if (!(where = strappend(root_dir, p->path)))
-                return -ENOMEM;
-
-        switch (p->mode) {
-
-        case INACCESSIBLE:
-                what = inaccessible_dir;
-                flags |= MS_RDONLY;
-                break;
-
-        case READONLY:
-                flags |= MS_RDONLY;
-                /* Fall through */
-
-        case READWRITE:
-                what = p->path;
-                break;
-
-        case PRIVATE:
-                what = private_dir;
-                break;
-
-        default:
-                assert_not_reached("Unknown mode");
-        }
-
-        if ((r = mount(what, where, NULL, MS_BIND|MS_REC, NULL)) >= 0) {
-                log_debug("Successfully mounted %s to %s", what, where);
-
-                /* The bind mount will always inherit the original
-                 * flags. If we want to set any flag we need
-                 * to do so in a second independent step. */
-                if (flags)
-                        r = mount(NULL, where, NULL, MS_REMOUNT|MS_BIND|MS_REC|flags, NULL);
-
-                /* Avoid exponential growth of trees */
-                if (r >= 0 && path_equal(p->path, "/"))
-                        r = mount(NULL, where, NULL, MS_REMOUNT|MS_BIND|MS_UNBINDABLE|flags, NULL);
-
-                if (r < 0) {
-                        r = -errno;
-                        umount2(where, MNT_DETACH);
-                }
-        }
-
-        free(where);
-        return r;
-}
-
-int setup_namespace(
-                char **writable,
-                char **readable,
-                char **inaccessible,
-                bool private_tmp,
-                unsigned long flags) {
-
-        char
-                tmp_dir[] = "/tmp/systemd-namespace-XXXXXX",
-                root_dir[] = "/tmp/systemd-namespace-XXXXXX/root",
-                old_root_dir[] = "/tmp/systemd-namespace-XXXXXX/root/tmp/old-root-XXXXXX",
-                inaccessible_dir[] = "/tmp/systemd-namespace-XXXXXX/inaccessible",
-                private_dir[] = "/tmp/systemd-namespace-XXXXXX/private";
-
-        Path *paths, *p;
-        unsigned n;
-        bool need_private = false, need_inaccessible = false;
-        bool remove_tmp = false, remove_root = false, remove_old_root = false, remove_inaccessible = false, remove_private = false;
-        int r;
-        const char *t;
-
-        n =
-                strv_length(writable) +
-                strv_length(readable) +
-                strv_length(inaccessible) +
-                (private_tmp ? 2 : 1);
-
-        if (!(paths = new(Path, n)))
-                return -ENOMEM;
-
-        p = paths;
-        if ((r = append_paths(&p, writable, READWRITE)) < 0 ||
-            (r = append_paths(&p, readable, READONLY)) < 0 ||
-            (r = append_paths(&p, inaccessible, INACCESSIBLE)) < 0)
-                goto fail;
-
-        if (private_tmp) {
-                p->path = "/tmp";
-                p->mode = PRIVATE;
-                p++;
-        }
-
-        p->path = "/";
-        p->mode = READWRITE;
-        p++;
-
-        assert(paths + n == p);
-
-        qsort(paths, n, sizeof(Path), path_compare);
-        drop_duplicates(paths, &n, &need_inaccessible, &need_private);
-
-        if (!mkdtemp(tmp_dir)) {
-                r = -errno;
-                goto fail;
-        }
-        remove_tmp = true;
-
-        memcpy(root_dir, tmp_dir, sizeof(tmp_dir)-1);
-        if (mkdir(root_dir, 0777) < 0) {
-                r = -errno;
-                goto fail;
-        }
-        remove_root = true;
-
-        if (need_inaccessible) {
-                memcpy(inaccessible_dir, tmp_dir, sizeof(tmp_dir)-1);
-                if (mkdir(inaccessible_dir, 0) < 0) {
-                        r = -errno;
-                        goto fail;
-                }
-                remove_inaccessible = true;
-        }
-
-        if (need_private) {
-                mode_t u;
-
-                memcpy(private_dir, tmp_dir, sizeof(tmp_dir)-1);
-
-                u = umask(0000);
-                if (mkdir(private_dir, 0777 + S_ISVTX) < 0) {
-                        umask(u);
-
-                        r = -errno;
-                        goto fail;
-                }
-
-                umask(u);
-                remove_private = true;
-        }
-
-        if (unshare(CLONE_NEWNS) < 0) {
-                r = -errno;
-                goto fail;
-        }
-
-        /* Remount / as SLAVE so that nothing mounted in the namespace
-           shows up in the parent */
-        if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) {
-                r = -errno;
-                goto fail;
-        }
-
-        for (p = paths; p < paths + n; p++)
-                if ((r = apply_mount(p, root_dir, inaccessible_dir, private_dir, flags)) < 0)
-                        goto undo_mounts;
-
-        memcpy(old_root_dir, tmp_dir, sizeof(tmp_dir)-1);
-        if (!mkdtemp(old_root_dir)) {
-                r = -errno;
-                goto undo_mounts;
-        }
-        remove_old_root = true;
-
-        if (chdir(root_dir) < 0) {
-                r = -errno;
-                goto undo_mounts;
-        }
-
-        if (pivot_root(root_dir, old_root_dir) < 0) {
-                r = -errno;
-                goto undo_mounts;
-        }
-
-        t = old_root_dir + sizeof(root_dir) - 1;
-        if (umount2(t, MNT_DETACH) < 0)
-                /* At this point it's too late to turn anything back,
-                 * since we are already in the new root. */
-                return -errno;
-
-        if (rmdir(t) < 0)
-                return -errno;
-
-        return 0;
-
-undo_mounts:
-
-        for (p--; p >= paths; p--) {
-                char full_path[PATH_MAX];
-
-                snprintf(full_path, sizeof(full_path), "%s%s", root_dir, p->path);
-                char_array_0(full_path);
-
-                umount2(full_path, MNT_DETACH);
-        }
-
-fail:
-        if (remove_old_root)
-                rmdir(old_root_dir);
-
-        if (remove_inaccessible)
-                rmdir(inaccessible_dir);
-
-        if (remove_private)
-                rmdir(private_dir);
-
-        if (remove_root)
-                rmdir(root_dir);
-
-        if (remove_tmp)
-                rmdir(tmp_dir);
-
-             free(paths);
-
-        return r;
-}