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nss: Directly load nss_dns, without going through dlsym/dlopen

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This partially fixes static-only NSS support (bug 27959): The dns
module no longer needs dlopen.  Support for disabling dlopen altogher
remains to be added.

This commit introduces module_load_builtin into nss/nss_module.c, which
handles the common parts of loading the built-in nss_files and nss_dns
modules.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2021-07-19 07:55:27 +02:00
parent e1fcf21474
commit ee5ed99922
6 changed files with 105 additions and 33 deletions
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6
nss/nss_files_functions.c
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@@ -34,10 +34,4 @@ __nss_files_functions (nss_module_functions_untyped pointers)
#undef DEFINE_NSS_FUNCTION
#define DEFINE_NSS_FUNCTION(x) *fptr++ = _nss_files_##x;
#include "function.def"
#ifdef PTR_MANGLE
void **end = fptr;
for (fptr = pointers; fptr != end; ++fptr)
PTR_MANGLE (*fptr);
#endif
}