Aloha!
I know it has been discussed before, but I must express my feelings about this issue nonetheless. I find it a major pain in the back that /proc/$pid/mem isn't readable by an unrelated process without doing a PTRACE_ATTACH first.
I mainly want to ask: is there a good reason to not drop this restriction?
I can read all the machine's physical memory and all of the kernel's address space (/dev/mem, /proc/kcore) non-intrusively, but I can't do the same on a single process. It seems to me that /proc/$pid/mem should work analogous to /dev/mem or /proc/kcore, but currently in practice it doesn't, and I don't see a good reason why it is supposed to be that way.
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