Testing pre and post system call exits

A system for testing pre and post system call exits comprising:

• a processor communicatively coupled to a memory, the processor configured to:
• execute a first test case, wherein the first test case comprises a plurality of system calls;
• and
• wherein the first test case initializes a common buffer and stores system call parameters for each of the plurality of system calls in the common buffer;
• execute a monitoring test case, wherein the monitoring test case comprises:
• a pre-exit instruction, wherein the pre-exit instruction is inserted before each system call in the plurality of system calls in the first test case;
• a post-exit instruction, wherein the post-exit instruction is inserted after each of the plurality of system calls in the first test case;
• prior to an execution of each system call in the plurality of system calls, determine that the pre-exit instruction executes;
• based at least in part on a determination that the pre-exit instruction executes, set a first bit location in the common buffer to indicate the pre-exit instruction executes;
• execute each system call;
• after an execution of a system call, determine that a post-exit instruction executes;
• and
• based at least in part on a determination that the post-exit instruction executes, set a second bit location in the common buffer to indicate the post-exit instruction executes.

A computer program product for testing pre and post system call exits, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, where the program instructions are executable by a processor to cause the processor to perform a method comprising:

• executing, by a processor, a first test case, wherein the first test case comprises a plurality of system calls;
• and
• wherein the first test case initializes a common buffer and stores system call parameters for each of the plurality of system calls in the common buffer;
• executing, by the processor, a monitoring test case, wherein the monitoring test case comprises:
• a pre-exit instruction, wherein the pre-exit instruction is inserted before each system call in the plurality of system calls in the first test case;
• a post-exit instruction, wherein the post-exit instruction is inserted after each of the plurality of system calls in the first test case;
• prior to an execution of each system call in the plurality of system calls, determining that the pre-exit instruction executes;
• based at least in part on the determining that the pre-exit instruction executes, setting a first bit location in the common buffer to indicate the pre-exit instruction executes;
• executing each system call;
• after an execution of a system call, determining that the post-exit instruction executes;
• and
• based at least in part on the determining that the post-exit instruction executes, setting a second bit location in the common buffer to indicate the post-exit instruction executes.