const char *dir;
mode_t mode;
const char *target;
+ const char *exists;
} BaseFilesystem;
static const BaseFilesystem table[] = {
- { "bin", 0, "usr/bin" },
- { "lib", 0, "usr/lib" },
+ { "bin", 0, "usr/bin\0", NULL },
+ { "lib", 0, "usr/lib\0", NULL },
+ { "root", 0755, NULL, NULL },
+ { "sbin", 0, "usr/sbin\0", NULL },
#if defined(__i386__) || defined(__x86_64__)
- { "lib64", 0, "usr/lib/x86_64-linux-gnu\0usr/lib64" },
+ { "lib64", 0, "usr/lib/x86_64-linux-gnu\0"
+ "usr/lib64\0", "ld-linux-x86-64.so.2" },
#endif
- { "root", 0755, NULL },
- { "sbin", 0, "usr/sbin" },
};
int base_filesystem_create(const char *root) {
fd = open(root, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
if (fd < 0)
- return -errno;
+ 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)
+ continue;
+
if (table[i].target) {
- const char *target = NULL;
- const char *s;
+ const char *target = NULL, *s;
/* check if one of the targets exists */
NULSTR_FOREACH(s, table[i].target) {
if (faccessat(fd, s, F_OK, AT_SYMLINK_NOFOLLOW) < 0)
continue;
+ /* check if a specific file exists at the target path */
+ if (table[i].exists) {
+ _cleanup_free_ char *p = NULL;
+
+ p = strjoin(s, "/", table[i].exists, NULL);
+ if (!p)
+ return log_oom();
+
+ if (faccessat(fd, p, F_OK, AT_SYMLINK_NOFOLLOW) < 0)
+ continue;
+ }
+
target = s;
break;
}
continue;
r = symlinkat(target, fd, table[i].dir);
- if (r < 0 && errno != EEXIST) {
- log_error("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);
continue;
}
RUN_WITH_UMASK(0000)
r = mkdirat(fd, table[i].dir, table[i].mode);
- if (r < 0 && errno != EEXIST) {
- log_error("Failed to create directory at %s/%s: %m", root, table[i].dir);
- return -errno;
- }
+ if (r < 0 && errno != EEXIST)
+ return log_error_errno(errno, "Failed to create directory at %s/%s: %m", root, table[i].dir);
}
return 0;