66819e6c11
When a more complex resource (a file hierarchy) is needed, packing every single file as a single resource would be very ineffective. For that purpose, it is possible to pack the files into a tar archive, extract it before test from the resource and finally clean up all the created files. This patch introduces functions resource_untar and resource_rm_by_tar to perform those tasks. An example of using those functions is included as a test. A new dependency is required to build the app/test: libarchive. Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2016 RehiveTech. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of RehiveTech nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RESOURCE_H_
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#define _RESOURCE_H_
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/**
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* @file
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*
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* Test Resource API
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*
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* Each test can require and use some external resources. Usually, an external
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* resource is a file or a filesystem sub-hierarchy. A resource is included
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* inside the test executable.
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*/
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#include <sys/queue.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <rte_eal.h>
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#include <rte_common.h>
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TAILQ_HEAD(resource_list, resource);
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extern struct resource_list resource_list;
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/**
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* Representation of a resource. It points to the resource's binary data.
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* The semantics of the binary data are defined by the target test.
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*/
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struct resource {
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const char *name; /**< Unique name of the resource */
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const char *begin; /**< Start of resource data */
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const char *end; /**< End of resource data */
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TAILQ_ENTRY(resource) next;
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};
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/**
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* @return size of the given resource
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*/
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size_t resource_size(const struct resource *r);
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/**
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* Find a resource by name in the global list of resources.
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*/
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const struct resource *resource_find(const char *name);
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/**
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* Write the raw data of the resource to the given file.
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* @return 0 on success
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*/
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int resource_fwrite(const struct resource *r, FILE *f);
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/**
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* Write the raw data of the resource to the given file given by name.
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* The name is relative to the current working directory.
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* @return 0 on success
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*/
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int resource_fwrite_file(const struct resource *r, const char *fname);
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/**
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* Treat the given resource as a tar archive. Extract
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* the archive to the current directory.
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*/
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int resource_untar(const struct resource *res);
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/**
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* Treat the given resource as a tar archive. Remove
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* all files (related to the current directory) listed
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* in the tar archive.
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*/
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int resource_rm_by_tar(const struct resource *res);
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/**
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* Register a resource in the global list of resources.
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* Not intended for direct use, please check the REGISTER_RESOURCE
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* macro.
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*/
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void resource_register(struct resource *r);
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/**
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* Definition of a resource linked externally (by means of the used toolchain).
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* Only the base name of the resource is expected. The name refers to the
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* linked pointers beg_<name> and end_<name> provided externally.
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*/
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#define REGISTER_LINKED_RESOURCE(n) \
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extern const char beg_ ##n; \
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extern const char end_ ##n; \
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REGISTER_RESOURCE(n, &beg_ ##n, &end_ ##n) \
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/**
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* Definition of a resource described by its name, and pointers begin, end.
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*/
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#define REGISTER_RESOURCE(n, b, e) \
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static struct resource linkres_ ##n = { \
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.name = RTE_STR(n), \
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.begin = b, \
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.end = e, \
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}; \
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static void __attribute__((constructor, used)) resinitfn_ ##n(void) \
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{ \
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resource_register(&linkres_ ##n); \
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}
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#endif
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