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| -rw-r--r-- | hurd/what_is_the_gnu_hurd.mdwn | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/hurd/what_is_the_gnu_hurd.mdwn b/hurd/what_is_the_gnu_hurd.mdwn index 8315bfff..09c26ee7 100644 --- a/hurd/what_is_the_gnu_hurd.mdwn +++ b/hurd/what_is_the_gnu_hurd.mdwn @@ -33,7 +33,14 @@ provides the same standard interfaces known from other [[UNIX]]-like systems. Thus, for a typical user, the Hurd is intended to silently work in the background providing the services and infrastructure which the [[microkernel]] itself has no business implementing, but that are required for higher level -programs and libraries to operate. +programs and libraries to operate. Let's look at an example. + +[[!img open_issues/images/overview.svg]] + +Firefox invokes glibc's `send ()`, which in turn uses the pfinet (or +lwip) TCP/IP stack, which talk to our device drivers (rump or netdde), +which finally talk to GNU Mach. Only GNU Mach runs in kernel space! +Everything else is userspace! The Hurd supplies the last major software component needed for a complete [[GNU_operating_system|running/gnu]] as originally conceived by Richard |