>>> Lennart Poettering <lennart@xxxxxxxxxxxxxx> schrieb am 12.12.2019 um 11:37 in Lennafrt, please review: I had been raising doubts to the statement "would not work if the file was just rewritten", saying "Did you ever try to overwrite a dynamically loaded file?". Then you responded: "Your package manager does that all the time." Completely independent from the following disagreeing opinions, my former statement that it's not possible to overwrite a file that is demand-paged (formulated as a polite question), was _not_ proven false. I was just raising my surprise to the fact that nobody seems to understand what demand-paged means. YOU (not me) used the "fool" term, so please re-read. Regards, Ulrich Nachricht <20191212103704.GB20337@gardel-login>: > On Do, 12.12.19 07:53, Ulrich Windl (Ulrich.Windl@xxxxxx‑regensburg.de) wrote: > >> >> > Well. This specifically may be doable by checking if any file open by >> >> > process is marked deleted, but would not work if the file was just >> >> > rewritten... >> >> >> >> Did you ever try to overwrite a dynmically loaded file? I doubt it >> >> is possible for obvious reasons. >> > >> > Your package manager does that all the time. It's possible and common >> > case. >> >> Seems you are all MS‑Windows guys: If the package manager would overwrite >> existing files, there'd be no reason to restart any process. What the > package >> manager does is to unlink the name from the inode and then recreate a new > inode >> assigning the same name. If you don't understand this difference, you don't >> understand how UNIX works. I'm kind of shocked to read such nonsense in this >> list. > > Oh, man, you are getting on my nerves. So first of all, in systemd all > regular files we ever write are written in this "atomic style", > i.e. write out the new version under a temporary name, and move it > into place with rename() atomically. > > Secondly, your premise that "if the package manager would overwrite > existing files, there'd be no reason to restart any process" (by which > you apparently mean "keep the inode, overwrite blocks") is just > so weird, that I don't even know where to start... > > Anyway, every now and then please assume we are not complete > fools. Thank you, > > Lennart > > ‑‑ > Lennart Poettering, Berlin _______________________________________________ systemd-devel mailing list systemd-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/systemd-devel