relro entry missing in JSON output of "iIj"

[cpuinfo]

Environment

date
Sun 17 Apr 2022 02:15:05 PM IST
r2 -v
radare2 5.4.2 0 @ linux-x86-64 git.5.4.2
commit: 5.4.2 build: 2021-09-26__11:56:56
uname -ms
Linux x86_64

Description

For two different binaries, I fired the "iIj" command after "aaa". One of them showed a missing "relro" entry as shown below. Is it not supposed to be there as it becomes easy to process the JSON outcome in a standardized way. Expected to have a "relro": "" blank entry atleast. Also no idea on why its not able to extract the relro for the binary.

Test

Attached zip format of the ELF binary samples
binary without relro
binary with relro

> aaa
> iIj

Output of ilj from two different binaries

[trufae]

thats because this binary doesnt have relro information?

also, aaa is not necessary, all this info is in the binary headers, no code analysis required

[Lazula]

@trufae I believe the salient part is this:

Expected to have a "relro": "" blank entry atleast.

[trufae]

Imho it will be more correct to say relro:no. But this is just an elf specific thing. It doesnt exist in any other file format. So in case the value is not ther its not printed.

do we want to define json schemas for every command now?

[trufae]

My only concern here is that relro only makes sense on elf. So i guess the fix for this relro:no must be done in the elf plugin instead of the json printer. Anyone?

[trufae]

sorry for the delay, i just had 5 spare minutes to check this issue, and pushed a pr fixing it.