Hi all, here is my update to the JSON support for strace, I upload some test output and diff patch to gist for your review, you can see it all here: https://gist.github.com/zym0017d
there are 3 kind files in my Gists: 1, you can see the test outputs with and without option '-j' for a comparison. The 2 tests below give the JSON output for most syscalls in process.c and io.c (except ioctl). And some syscall's output are invalid JSON format because they are not modified yet. Strace prints a log of things in hex format (such as address and flags), the JSON output will print all these hex numbers in unsigned decimal format. a1) https://gist.github.com/zym0017d/d4b3667592cd07c5ea00 a2) https://gist.github.com/zym0017d/49aed6896fbe556689e8 b1) https://gist.github.com/zym0017d/a368665bae867a72d344 b2) https://gist.github.com/zym0017d/093f090cac4d85bd618e 2, I introduced some new output functions such as jprintf(), jprinta() and jprints() to support JSON output. The first letter 'j' means 'json', and they are used almost the same to tprintf() and tprints() with only one extra format argument to support JSON output, you can find the implementations here: https://gist.github.com/zym0017d/80cdae83b3d6c70926d6 3, Another important question is how to modify the existing strace code to use jprintf(),jpinrtf() and jprints() to support JSON output, these modification are much simple than before and very intuitive to understand, most modifications just simply replace the old tprintf() with jprinta() or jprintf() and add one extra format string to specify how to output it in JSON format. here are my modifications to io.c, util.c and syscall.c: a) https://gist.github.com/zym0017d/fa163698d88c2b270882 b) https://gist.github.com/zym0017d/5f239a9f2325d7d36f7f c) https://gist.github.com/zym0017d/856c2e5882522f5f628d I will clean the code and write more test for JSON output and then send them to the mailing list. Thank you! --- YangMin ------------------------------------------------------------------------------ _______________________________________________ Strace-devel mailing list Strace-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/strace-devel
