A simple process monitor using the client-server model.

Type 'make' after you extract everything from the tarball distribution and the 2 executables would be generated in the 'bin' folder.

For the server, please remember to export the 2 environment variables like the following before running the 'bin/procnanny.server' program:

export PROCNANNYSERVERINFO=./report
export PROCNANNYLOGS=./log

and then run it as 'bin/procnanny.server [CONFIGURATION FILE]'.

For the client, there is no need to export any environment variables, just simply run it as 'bin/procnanny.client [HOST NAME] 9898', where the '9898' is the predefined listening port number of the server.

To generate the documentation, you need to have doxygen installed; even though the source code does not contain any doxygen formatting directives, you can still use the cross-reference feature of it to assist code reading:

doxygen Doxyfile

the resulting documentation would reside in doc folder.

1.The length of a line is no more than 1023 characters. The reason for using a statically allocated array rather than something like getline() is that memwatch cannot detect the memory allocated by getline().

2.The recycling nature of pid is IGNORED. Even though the checking is performed on errno after the process is killed, we still have a potential problem of killing some other processes end up with the pid same as the one before.

3.The configuration file is ALWAYS VALID: there cannot be redundant lines with identical information or a "re-definition" like "coredumpctl 8" and then there is a line "coredumpctl 10" appear in the configuration file at the same time; however, "re-definition" is allowed if the file is re-read (caught a SIGHUP signal).

4.The length of the program name to be monitored is no more than 1023 characters as well(based on ASSUMPTION #1).

5.The size of deletion queue is assumed to be 1024 at maximum; this queue is used for storing information about deletion of the pw_pid_info structure upon the success/failure of a monitored process.

6.The server and clients cannot crash or be killed.

7.The server and all its clients have the same endianness; in other words, the data sent through the socket is not serialized.

8.Both SIGINT and SIGHUP signals cannot be sent to the server process before the handlers are successfully set up.

Copyright © 2015 Jiahui Xie Licensed under the BSD 2-Clause License. Distributed under the BSD 2-Clause License.