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602a9ef5a7
to unload and re-load the library. The difficulty with unloading a library is that we haven't defined safe protocols for doing so. In particular, there's no safe mechanism for getting out of a "hook" function pointer unless libraries are unloaded in reverse order of loading. And there's no mechanism at all for undefining a custom GUC variable, so GUC would be left with a pointer to an old value that might or might not still be valid, and very possibly wouldn't be in the same place anymore. While the unload and reload behavior had some usefulness in easing development of new loadable libraries, it's of no use whatever to normal users, so just disabling it isn't giving up that much. Someday we might care to expend the effort to develop safe unload protocols; but even if we did, there'd be little certainty that every third-party loadable module was following them, so some security restrictions would still be needed. Back-patch to 8.2; before that, LOAD was superuser-only anyway. Security: unprivileged users could crash backend. CVE not assigned yet |
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| cache | ||
| error | ||
| fmgr | ||
| hash | ||
| init | ||
| mb | ||
| misc | ||
| mmgr | ||
| resowner | ||
| sort | ||
| time | ||
| .cvsignore | ||
| Gen_dummy_probes.sed | ||
| Gen_fmgrtab.pl | ||
| Gen_fmgrtab.sh | ||
| Makefile | ||
| probes.d | ||