Dependency on systemd

[alifarazz]

Running the program on a Linux distro without systemd gives this error:

$ sudo bpftop 
Error: No such file or directory (os error 2)

Tracing it with strace revals that I tries to access a socket located at /run/systemd/journal/socket, but it fails and the program shuts down:

$ sudo strace bpftop 2>&1 | tail -n 14
readlink("/proc/self/exe", "/usr/bin/bpftop", 256) = 15
sendto(3, "", 0, MSG_NOSIGNAL, {sa_family=AF_UNIX, sun_path="/run/systemd/journal/socket"}, 30) = -1 ENOENT (No such file or directory)
close(3)                                = 0
write(2, "Error: ", 7Error: )                  = 7
write(2, "No such file or directory", 25No such file or directory) = 25
write(2, " (os error ", 11 (os error )             = 11
write(2, "2", 12)                        = 1
write(2, ")", 1))                        = 1
write(2, "\n", 1
)                       = 1
sigaltstack({ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=8192}, NULL) = 0
munmap(0x704292d3c000, 12288)           = 0
exit_group(1)                           = ?
+++ exited with 1 +++

Does this tool have a hard-dependency on systemd and its libraries, or it can still work without them?

[jfernandez]

@alifarazz there is a fix for this if you build bpftop from HEAD, but I haven't cut a release yet with it. a9a121a

[alifarazz]

Thanks for the prompt response. Just built it from HEAD and it works 👍
Close the issue when you see fit.

[jfernandez]

I’ll leave it open until I cut a new release

[jfernandez]

Fixed in the latest release https://github.com/Netflix/bpftop/releases/tag/v0.5.2