/* libminijail-private.h * Copyright (c) 2011 The Chromium OS Authors. All rights reserved. * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. * * Values shared between libminijailpreload and libminijail, but not visible to * the outside world. */ #ifndef LIBMINIJAIL_PRIVATE_H #define LIBMINIJAIL_PRIVATE_H /* Explicitly declare exported functions so that -fvisibility tricks * can be used for testing and minimal symbol leakage occurs. */ #define API __attribute__ ((visibility("default"))) static const char *kFdEnvVar = "__MINIJAIL_FD"; static const char *kLdPreloadEnvVar = "LD_PRELOAD"; struct minijail; /* minijail_size: returns the size (in bytes) of @j if marshalled * @j jail to compute size of * * Returns 0 on error. */ extern size_t minijail_size(const struct minijail *j); /* minijail_marshal: serializes @j to @buf * @j minijail to serialize * @buf buffer to serialize to * @size size of @buf * * Returns 0 on success. * * Writes |j| to |buf| such that it can be reparsed by the same * library on the same architecture. This is meant to be used * by minijail0.c and libminijailpreload.c. minijail flags that * require minijail_run() will be excluded. * * The marshalled data is not robust to differences between the child * and parent process (personality, etc). */ extern int minijail_marshal(const struct minijail *j, char *buf, size_t size); /* minijail_unmarshal: initializes @j from @serialized * @j minijail to initialize * @serialized serialized jail buffer * @length length of buffer * * Returns 0 on success. */ extern int minijail_unmarshal(struct minijail *j, char *serialized, size_t length); /* minijail_from_fd: builds @j from @fd * @j minijail to initialize * @fd fd to initialize from * * Returns 0 on success. */ extern int minijail_from_fd(int fd, struct minijail *j); /* minijail_to_fd: sends @j over @fd * @j minijail to send * @fd fd to send over * * Returns 0 on success. */ extern int minijail_to_fd(struct minijail *j, int fd); /* minijail_preexec: strips @j of all options handled by minijail_enter() * @j jail to strip */ extern void minijail_preexec(struct minijail *j); /* minijail_preenter: strips @j of all options handled by minijail_run() * @j jail to strip */ extern void minijail_preenter(struct minijail *j); #endif /* !LIBMINIJAIL_PRIVATE_H */