c51cd5fe91
Before safecopies, the IO_ENDPT and DL_ENDPT message fields were needed to know which actual process to copy data from/to, as that process may not always be the caller. Now that we have full safecopy support, these fields have become useless for that purpose: the owner of the grant is *always* the caller. Allowing the caller to supply another endpoint is in fact dangerous, because the callee may then end up using a grant from a third party. One could call this a variant of the confused deputy problem. From now on, safecopy calls should always use the caller's endpoint as grant owner. This fully obsoletes the DL_ENDPT field in the inet/ethernet protocol. IO_ENDPT has other uses besides identifying the grant owner though. This patch renames IO_ENDPT to USER_ENDPT, not only because that is a more fitting name (it should never be used for I/O after all), but also in order to intentionally break any old system source code outside the base system. If this patch breaks your code, fixing it is fairly simple: - DL_ENDPT should be replaced with m_source; - IO_ENDPT should be replaced with m_source when used for safecopies; - IO_ENDPT should be replaced with USER_ENDPT for any other use, e.g. when setting REP_ENDPT, matching requests in CANCEL calls, getting DEV_SELECT flags, and retrieving of the real user process's endpoint in DEV_OPEN. The changes in this patch are binary backward compatible. |
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| .. | ||
| ack | ||
| csu | ||
| libarchive | ||
| libaudiodriver | ||
| libbz2 | ||
| libc | ||
| libcurses | ||
| libddekit | ||
| libdevman | ||
| libdriver | ||
| libedit | ||
| libend | ||
| libexec | ||
| libfetch | ||
| libhgfs | ||
| libl | ||
| liblwip | ||
| libm | ||
| libmthread | ||
| libnetdriver | ||
| libsys | ||
| libtimers | ||
| libusb | ||
| libutil | ||
| libvtreefs | ||
| libz | ||
| nbsd_libasyn | ||
| nbsd_libc | ||
| nbsd_libcompat_minix | ||
| nbsd_libm | ||
| nbsd_libminlib | ||
| ack_build.sh | ||
| clang_build.sh | ||
| elf_build.sh | ||
| gnu_build.sh | ||
| Makefile | ||
| Makefile.inc | ||
| README | ||
ack_build.sh - for ACK library building gnu_build.sh - for GNU library building ack_build.sh obj - create objdirs for gnu libraries ack_build.sh depend - find dependencies of ack libraries ack_build.sh all - compile ack libraries ack_build.sh install - compile and install ack libraries ack_build.sh clean - clean for ack libraries gnu_build.sh obj - create objdirs for gnu libraries gnu_build.sh depend - find dependencies of gnu libraries gnu_build.sh all - compile gnu libraries gnu_build.sh install - compile and install gnu libraries gnu_build.sh clean - clean for gnu libraries