CN105528292A - Kernel unit test method and system based on kernel module - Google Patents
Kernel unit test method and system based on kernel module Download PDFInfo
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- CN105528292A CN105528292A CN201510890501.6A CN201510890501A CN105528292A CN 105528292 A CN105528292 A CN 105528292A CN 201510890501 A CN201510890501 A CN 201510890501A CN 105528292 A CN105528292 A CN 105528292A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3684—Test management for test design, e.g. generating new test cases
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
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Abstract
The present invention discloses a kernel unit test method and system based on a kernel module. The method comprises the steps of compiling kernel codes which are developed by technical personnel and used for test, and obtaining test program; using the test program as a kernel module and installing the test program to a system kernel; and in the kernel space, utilizing the test program used as the kernel module, and directly calling the corresponding kernel function for kernel unit test. The dependence on kernel special logic indirect call is avoided, compared with the prior art that the kernel function is indirectly executed through system call, isolation generated by system call is effectively avoided, the probability of finding bug is increased, and therefore test requirements are satisfied.
Description
Technical field
The present invention relates to computer software testing technical field, particularly relate to a kind of kernel unit method of testing based on kernel module and system.
Background technology
At present, unit test method development for a long time, but because workload is large, testing progress is by problems such as coding affect, a lot of small-to-medium business does not all carry out the work of this respect, especially, for kernel, unit testing difficulty is larger, and the company that the domestic overwhelming majority does kernel development does not all have unit testing link.
For kernel, the quality of kernel coding will directly have influence on the stability of system cloud gray model, and therefore, carry out kernel unit test to the kernel code of exploitation, Timeliness coverage problem is only most important.Wherein, unit testing can help some system testings of developer's Timeliness coverage to be difficult to the problem found, for kernel development personnel Timeliness coverage bug provides strong help.
With regard to current technology, unit testing is all be used in the test to User space program, such as tests the piling of User space program.This method can only be used in the test of user program, and the unit testing of existing maturation is also all be used in User space, and the test for kernel state is substantially all also the stage resting on system testing.This has also just occurred much arriving curstomer's site just detectable problem, has not only interrupted normal development plan, and has brought a kind of very large pressure to developer.
Based on this, need badly and a kind ofly can avoid the isolation because system call produces (system call can shield some problems and cause technician can not Timeliness coverage), improve the probability finding bug, and then reach the new kernel unit method of testing of test request.
Summary of the invention
In view of this, the invention provides a kind of kernel unit method of testing based on kernel module and system, to avoid the isolation because system call produces, improve the probability finding bug, and then reach test request.
For solving the problems of the technologies described above, the invention provides a kind of kernel unit method of testing based on kernel module, comprising:
The kernel code for testing of technique of compiling staff development, obtains test procedure;
Using described test procedure as kernel module, be mounted in system kernel;
In kernel spacing, utilize the described test procedure as described kernel module, directly call corresponding kernel function and carry out kernel unit test.
In said method, preferably, when receiving the test sign on from the user program of user's space, utilizing the described test procedure as described kernel module, directly calling corresponding kernel function and carrying out kernel unit test.
In said method, preferably, described utilization, as the described test procedure of described kernel module, is directly called corresponding kernel function and is carried out kernel unit test, comprising:
The test data that reception technique personnel input to described user program;
Described test data is passed to the data-interface of described test procedure, makes described test procedure carry out the kernel unit corresponding with described test data test by directly calling the kernel function corresponding to described test data.
In said method, preferably, at the described test procedure of described utilization as described kernel module, directly call corresponding kernel function carry out kernel unit test time, also comprise:
To described user program feedback test result.
In said method, preferably, the daily record that described system kernel exports is fed back to described user program as test result.
Present invention also offers a kind of kernel unit test macro based on kernel module, comprising:
Compilation unit, for the kernel code for testing of technique of compiling staff development, obtains test procedure;
Installation unit, for using described test procedure as kernel module, be mounted in system kernel;
Test cell, in kernel spacing, utilizes the described test procedure as described kernel module, directly calls corresponding kernel function and carry out kernel unit test.
In said system, preferably, described test cell, specifically for when receiving the test sign on from the user program of user's space, utilizes the described test procedure as described kernel module, directly calls corresponding kernel function and carries out kernel unit test.
In said system, preferably, described test cell comprises:
Receive subelement, for the test data that reception technique personnel input to described user program;
Test subelement, for described test data being passed to the data-interface of described test procedure, makes described test procedure carry out the kernel unit corresponding with described test data test by directly calling the kernel function corresponding to described test data.
In said system, preferably, also comprise:
Feedback unit, at the described test procedure of described utilization as described kernel module, directly calls corresponding kernel function when carrying out kernel unit test, to described user program feedback test result.
In said system, preferably, described feedback unit feeds back to described user program specifically for the daily record exported by described system kernel as test result.
Above in a kind of kernel unit method of testing based on kernel module provided by the invention and system, the kernel code for testing of technique of compiling staff development, obtains test procedure; Using described test procedure as kernel module, be mounted in system kernel; In kernel spacing, utilize the described test procedure as described kernel module, directly call corresponding kernel function and carry out kernel unit test, span the dependence to the indirect call of kernel specific logical, compare in prior art and indirectly perform kernel function by system call, effectively prevent the isolation because system call produces, improve the probability finding bug, and then reach test request.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The process flow diagram of a kind of kernel unit method of testing based on kernel module that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 adopts system call mode to carry out the application scenarios process flow diagram tested in prior art;
The application scenarios process flow diagram of a kind of kernel unit method of testing based on kernel module that Fig. 3 provides for the embodiment of the present invention;
The structured flowchart schematic diagram of a kind of kernel unit test macro based on kernel module that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Core of the present invention is to provide a kind of kernel unit method of testing based on kernel module and system, to avoid the isolation because system call produces, improves the probability finding bug, and then reaches test request.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Show the process flow diagram of a kind of kernel unit method of testing based on kernel module that the embodiment of the present invention provides with reference to figure 1, Fig. 1, the method specifically can comprise the steps:
The kernel code for testing of step S100, technique of compiling staff development, obtains test procedure.
Step S101, using test procedure as kernel module, be mounted in system kernel.
In the present invention, the test procedure as kernel module is called kernel test module.
Want to allow test procedure directly call kernel function, need to adopt the module of writing similar driving, dynamically insert with the form of kernel module and be installed to system kernel, this method also need not recompilate kernel mirror image, directly simple, and normally can unload with the module unloading manner of routine, in specific implementation process, the compression and decompression of the module of specifying can be completed by insmod/rmmod order.
Step S102, in kernel spacing, utilize the test procedure as kernel module, directly call corresponding kernel function and carry out kernel unit test.
In actual applications, test procedure can not run immediately as the module of kernel after inserting kernel, the kernel module of the user program of user's space to kernel spacing is had to control, namely need User space to issue test sign on could run, want here can realize by the flexible control of user program to test procedure.Therefore, when receiving the test sign on from the user program of user's space, utilizing the test procedure as kernel module, directly calling corresponding kernel function and carrying out kernel unit test.
It is mutual that the above-mentioned initiation to test procedure needs between kernel spacing and user's space, same, although test procedure can realize several scenes, the test of multiple situation, but these all will import different test datas into by user program and could trigger, and these data are just from the input of client layer.The specific implementation process of above-mentioned steps S102 is as follows:
First, the test data that inputs to user program of reception technique personnel; Then, test data is passed to the data-interface of test procedure, makes test procedure carry out the kernel unit corresponding with test data test by directly calling the kernel function corresponding to test data.
Referring to figs. 2 and 3, Fig. 2 shows in a kind of prior art and adopts system call mode to carry out the application scenarios process flow diagram tested, and Fig. 3 shows the application scenarios process flow diagram of a kind of kernel unit method of testing based on kernel module that the embodiment of the present invention provides.In fig. 2, user program directly enters kernel by system call, test kernel.And in figure 3, user program enters kernel by the test procedure called as kernel module, kernel module directly calls kernel function and tests, and the four-headed arrow in figure is the reciprocal process of user's space and kernel spacing.For other content in figure, be not emphasis place of the present invention, with reference to prior art, can not do too much elaboration herein.
In addition, understand the result of test for the ease of technician, while carrying out kernel unit test, to user program feedback test result, further, the daily record that system kernel exports can be fed back to user program as test result.This is because in actual applications, the daily record that kernel can be run by printk register system, technician can by checking that the log that system journal or kernel export sees.Certainly, also can pass to user program, feed back to user by user program.
To sum up, utilize the test procedure as kernel module, directly call corresponding kernel function and carry out kernel unit test, span the dependence to the indirect call of kernel specific logical, compare in prior art and indirectly perform kernel function by system call, effectively prevent the isolation because system call produces, improve the probability finding bug, and then reach test request.
Based on the kernel unit method of testing based on kernel module that the invention described above embodiment provides, the embodiment of the present invention additionally provides a kind of kernel unit test macro based on kernel module, and with reference to figure 4, this system 400 can comprise following content:
Compilation unit 401, for the kernel code for testing of technique of compiling staff development, obtains test procedure;
Installation unit 402, for using test procedure as kernel module, be mounted in system kernel;
Test cell 403, in kernel spacing, utilizes the test procedure as kernel module, directly calls corresponding kernel function and carries out kernel unit test.
In the present invention, test cell 403 specifically may be used for, when receiving the test sign on from the user program of user's space, utilizing the test procedure as kernel module, directly calls corresponding kernel function and carries out kernel unit test.
Further, test cell 403 specifically can comprise following content:
Receive subelement, for the test data that reception technique personnel input to user program;
Test subelement, for test data being passed to the data-interface of test procedure, makes test procedure carry out the kernel unit corresponding with test data test by directly calling the kernel function corresponding to test data.
In the present invention, said system 400 specifically can also comprise feedback unit, for utilizing as the test procedure of kernel module, directly calls corresponding kernel function when carrying out kernel unit test, to user program feedback test result.
Further, above-mentioned feedback unit feeds back to user program specifically for the daily record exported by system kernel as test result.
It should be noted that, each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment identical similar part mutually see.For system class embodiment, due to itself and embodiment of the method basic simlarity, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.
Above a kind of kernel unit method of testing based on kernel module provided by the present invention and system are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1., based on a kernel unit method of testing for kernel module, it is characterized in that, comprising:
The kernel code for testing of technique of compiling staff development, obtains test procedure;
Using described test procedure as kernel module, be mounted in system kernel;
In kernel spacing, utilize the described test procedure as described kernel module, directly call corresponding kernel function and carry out kernel unit test.
2. the method for claim 1, is characterized in that,
When receiving the test sign on from the user program of user's space, utilizing the described test procedure as described kernel module, directly calling corresponding kernel function and carrying out kernel unit test.
3. method as claimed in claim 2, it is characterized in that, described utilization, as the described test procedure of described kernel module, is directly called corresponding kernel function and is carried out kernel unit test, comprising:
The test data that reception technique personnel input to described user program;
Described test data is passed to the data-interface of described test procedure, makes described test procedure carry out the kernel unit corresponding with described test data test by directly calling the kernel function corresponding to described test data.
4. the method as described in claims 1 to 3 any one, is characterized in that, at the described test procedure of described utilization as described kernel module, directly call corresponding kernel function carry out kernel unit test time, also comprise:
To described user program feedback test result.
5. method as claimed in claim 4, it is characterized in that, the daily record exported by described system kernel feeds back to described user program as test result.
6., based on a kernel unit test macro for kernel module, it is characterized in that, comprising:
Compilation unit, for the kernel code for testing of technique of compiling staff development, obtains test procedure;
Installation unit, for using described test procedure as kernel module, be mounted in system kernel;
Test cell, in kernel spacing, utilizes the described test procedure as described kernel module, directly calls corresponding kernel function and carry out kernel unit test.
7. system as claimed in claim 6, it is characterized in that, described test cell, specifically for when receiving the test sign on from the user program of user's space, utilizes the described test procedure as described kernel module, directly calls corresponding kernel function and carries out kernel unit test.
8. system as claimed in claim 7, it is characterized in that, described test cell comprises:
Receive subelement, for the test data that reception technique personnel input to described user program;
Test subelement, for described test data being passed to the data-interface of described test procedure, makes described test procedure carry out the kernel unit corresponding with described test data test by directly calling the kernel function corresponding to described test data.
9. the system as described in claim 6 to 8 any one, is characterized in that, also comprises:
Feedback unit, at the described test procedure of described utilization as described kernel module, directly calls corresponding kernel function when carrying out kernel unit test, to described user program feedback test result.
10. system as claimed in claim 9, it is characterized in that, described feedback unit feeds back to described user program specifically for the daily record exported by described system kernel as test result.
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| CN114676069A (en) * | 2022-05-30 | 2022-06-28 | 深圳市科力锐科技有限公司 | Kernel file testing method, device, equipment and storage medium |
| CN115033497A (en) * | 2022-08-11 | 2022-09-09 | 北京登临科技有限公司 | Kernel function testing method, device, equipment and storage medium |
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Application publication date: 20160427 |