-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
***/
#include <errno.h>
-#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdbool.h>
#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
+#include <sys/stat.h>
+#include <syslog.h>
#include <unistd.h>
+#include "alloc-util.h"
#include "base-filesystem.h"
+#include "fd-util.h"
#include "log.h"
#include "macro.h"
-#include "strv.h"
+#include "string-util.h"
+#include "umask-util.h"
+#include "user-util.h"
#include "util.h"
-#include "label.h"
-#include "mkdir.h"
typedef struct BaseFilesystem {
const char *dir;
mode_t mode;
const char *target;
const char *exists;
+ bool ignore_failure;
} BaseFilesystem;
static const BaseFilesystem table[] = {
{ "bin", 0, "usr/bin\0", NULL },
{ "lib", 0, "usr/lib\0", NULL },
- { "root", 0755, NULL, NULL },
+ { "root", 0755, NULL, NULL, true },
{ "sbin", 0, "usr/sbin\0", NULL },
+ { "usr", 0755, NULL, NULL },
+ { "var", 0755, NULL, NULL },
+ { "etc", 0755, NULL, NULL },
+ { "proc", 0755, NULL, NULL, true },
+ { "sys", 0755, NULL, NULL, true },
+ { "dev", 0755, NULL, NULL, true },
#if defined(__i386__) || defined(__x86_64__)
{ "lib64", 0, "usr/lib/x86_64-linux-gnu\0"
"usr/lib64\0", "ld-linux-x86-64.so.2" },
#endif
};
-int base_filesystem_create(const char *root) {
+int base_filesystem_create(const char *root, uid_t uid, gid_t gid) {
_cleanup_close_ int fd = -1;
unsigned i;
- int r;
+ int r = 0;
fd = open(root, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
- if (fd < 0) {
- log_error_errno(errno, "Failed to open root file system: %m");
- return -errno;
- }
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to open root file system: %m");
for (i = 0; i < ELEMENTSOF(table); i ++) {
if (faccessat(fd, table[i].dir, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
if (table[i].exists) {
_cleanup_free_ char *p = NULL;
- p = strjoin(s, "/", table[i].exists, NULL);
+ p = strjoin(s, "/", table[i].exists);
if (!p)
return log_oom();
continue;
r = symlinkat(target, fd, table[i].dir);
- if (r < 0 && errno != EEXIST) {
- log_error_errno(errno, "Failed to create symlink at %s/%s: %m", root, table[i].dir);
- return -errno;
+ if (r < 0 && errno != EEXIST)
+ return log_error_errno(errno, "Failed to create symlink at %s/%s: %m", root, table[i].dir);
+
+ if (uid_is_valid(uid) || gid_is_valid(gid)) {
+ if (fchownat(fd, table[i].dir, uid, gid, AT_SYMLINK_NOFOLLOW) < 0)
+ return log_error_errno(errno, "Failed to chown symlink at %s/%s: %m", root, table[i].dir);
}
+
continue;
}
RUN_WITH_UMASK(0000)
r = mkdirat(fd, table[i].dir, table[i].mode);
if (r < 0 && errno != EEXIST) {
- log_error_errno(errno, "Failed to create directory at %s/%s: %m", root, table[i].dir);
- return -errno;
+ log_full_errno(table[i].ignore_failure ? LOG_DEBUG : LOG_ERR, errno,
+ "Failed to create directory at %s/%s: %m", root, table[i].dir);
+
+ if (!table[i].ignore_failure)
+ return -errno;
+
+ continue;
+ }
+
+ if (uid != UID_INVALID || gid != UID_INVALID) {
+ if (fchownat(fd, table[i].dir, uid, gid, AT_SYMLINK_NOFOLLOW) < 0)
+ return log_error_errno(errno, "Failed to chown directory at %s/%s: %m", root, table[i].dir);
}
}