Kernel+Userland: Support remounting filesystems :^)

This makes it possible to change flags of a mount after the fact, with the caveats outlined in the man page.
Author: https://github.com/bugaevc Commit: 3847d00727 Pull-request: https://github.com/SerenityOS/serenity/pull/2430 Reviewed-by: https://github.com/alimpfard
2025-07-31 05:09:12 +00:00 · 2020-05-28 21:12:13 +03:00 · 2020-05-28 21:12:13 +03:00 · 3847d00727 · 2024-07-19 06:00:22 +09:00
commit 3847d00727
parent d395b93b15
8 changed files with 58 additions and 0 deletions
--- a/Userland/chroot.cpp
+++ b/Userland/chroot.cpp
@ -59,6 +59,8 @@ int main(int argc, char** argv)
                    flags |= MS_NOSUID;
                else if (part == "ro")
                    flags |= MS_RDONLY;
+                else if (part == "remount")
+                    flags |= MS_REMOUNT;
                else if (part == "bind")
                    fprintf(stderr, "Ignoring -o bind, as it doesn't make sense for chroot\n");
                else