> Please send a patch with a test case. I have an R&D week coming up next week and if this is still not implemented I was thinking of looking into it. Any pointers into the codebase, docs etc... would be appreciated as I would be looking at this code for the first time. Cheers, Gab. On Tue, 14 Sept 2021 at 05:24, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote: > > On Mon, Sep 13, 2021 at 8:48 PM Andrii Nakryiko > <andrii.nakryiko@xxxxxxxxx> wrote: > > > > On Sat, Sep 11, 2021 at 2:05 AM Gabriele <phoenix1987@xxxxxxxxx> wrote: > > > > > > Hi there > > > > > > I recently started playing around with libbpf and I was wondering if > > > it is possible to read a process' VM from the kernel side. In > > > user-space one could use process_vm_read, but I haven't been able to > > > find an equivalent BPF API for that. > > > > Currently only current process's memory (in which BPF program is > > running) can be read with bpf_probe_read_user(). I don't think there > > is anything that allows reading some other process' data like > > process_vm_read allows. > > Indeed. Currently it's not possible, but this feature request > came up in the past and we couldn't do it until sleepable programs > came into existence. > Now ptrace_access_vm/process_vm_read could be added > as a bpf helper for sleepable programs. > Gab, > Please send a patch with a test case. -- "Egli è scritto in lingua matematica, e i caratteri son triangoli, cerchi, ed altre figure geometriche, senza i quali mezzi è impossibile a intenderne umanamente parola; senza questi è un aggirarsi vanamente per un oscuro laberinto." -- G. Galilei, Il saggiatore.
