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fix resolving symbols in objects loaded in RTLD_LOCAL mode

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basically we temporarily make the library and all its dependencies
part of the global namespace but only for the duration of performing
relocations, then return them to their former state.
This commit is contained in:
Rich Felker 2011-06-26 21:21:04 -04:00
commit 92ab5d8d15
1 changed files with 11 additions and 0 deletions
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11
src/ldso/dynlink.c
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@ -493,6 +493,9 @@ void *dlopen(const char *file, int mode)
if (setjmp(rtld_fail)) {
/* Clean up anything new that was (partially) loaded */
if (p->deps) for (i=0; p->deps[i]; i++)
if (p->deps[i]->global < 0)
p->deps[i]->global = 0;
for (p=orig_tail->next; p; p=next) {
next = p->next;
munmap(p->map, p->map_len);
@ -511,7 +514,15 @@ void *dlopen(const char *file, int mode)
/* First load handling */
if (!p->deps) {
load_deps(p);
for (i=0; p->deps[i]; i++)
if (!p->deps[i]->global)
p->deps[i]->global = -1;
if (!p->global) p->global = -1;
reloc_all(p);
for (i=0; p->deps[i]; i++)
if (p->deps[i]->global < 0)
p->deps[i]->global = 0;
if (p->global < 0) p->global = 0;
}
if (mode & RTLD_GLOBAL) {