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122 lines
3.8 KiB
122 lines
3.8 KiB
5 months ago
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commit a74c2e1cbc8673dd7e97aae2f2705392e2ccc3f6
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Mon Nov 27 11:28:10 2023 +0100
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elf: Introduce the _dl_open_relocate_one_object function
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It is extracted from dl_open_worker_begin.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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diff --git a/elf/dl-open.c b/elf/dl-open.c
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index c8a5d88161441031..cf3baccccb461878 100644
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--- a/elf/dl-open.c
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+++ b/elf/dl-open.c
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@@ -467,6 +467,50 @@ activate_nodelete (struct link_map *new)
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}
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}
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+/* Relocate the object L. *RELOCATION_IN_PROGRESS controls whether
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+ the debugger is notified of the start of relocation processing. */
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+static void
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+_dl_open_relocate_one_object (struct dl_open_args *args, struct r_debug *r,
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+ struct link_map *l, int reloc_mode,
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+ bool *relocation_in_progress)
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+{
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+ if (l->l_real->l_relocated)
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+ return;
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+
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+ if (!*relocation_in_progress)
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+ {
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+ /* Notify the debugger that relocations are about to happen. */
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+ LIBC_PROBE (reloc_start, 2, args->nsid, r);
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+ *relocation_in_progress = true;
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+ }
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+
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+#ifdef SHARED
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+ if (__glibc_unlikely (GLRO(dl_profile) != NULL))
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+ {
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+ /* If this here is the shared object which we want to profile
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+ make sure the profile is started. We can find out whether
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+ this is necessary or not by observing the `_dl_profile_map'
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+ variable. If it was NULL but is not NULL afterwards we must
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+ start the profiling. */
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+ struct link_map *old_profile_map = GL(dl_profile_map);
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+
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+ _dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1);
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+
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+ if (old_profile_map == NULL && GL(dl_profile_map) != NULL)
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+ {
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+ /* We must prepare the profiling. */
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+ _dl_start_profile ();
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+
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+ /* Prevent unloading the object. */
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+ GL(dl_profile_map)->l_nodelete_active = true;
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+ }
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+ }
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+ else
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+#endif
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+ _dl_relocate_object (l, l->l_scope, reloc_mode, 0);
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+}
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+
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+
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/* struct dl_init_args and call_dl_init are used to call _dl_init with
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exception handling disabled. */
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struct dl_init_args
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@@ -651,7 +695,7 @@ dl_open_worker_begin (void *a)
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}
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while (l != NULL);
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- int relocation_in_progress = 0;
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+ bool relocation_in_progress = false;
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/* Perform relocation. This can trigger lazy binding in IFUNC
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resolvers. For NODELETE mappings, these dependencies are not
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@@ -662,44 +706,8 @@ dl_open_worker_begin (void *a)
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are undefined anyway, so this is not a problem. */
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for (unsigned int i = last; i-- > first; )
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- {
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- l = new->l_initfini[i];
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-
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- if (l->l_real->l_relocated)
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- continue;
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-
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- if (! relocation_in_progress)
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- {
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- /* Notify the debugger that relocations are about to happen. */
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- LIBC_PROBE (reloc_start, 2, args->nsid, r);
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- relocation_in_progress = 1;
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- }
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-
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-#ifdef SHARED
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- if (__glibc_unlikely (GLRO(dl_profile) != NULL))
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- {
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- /* If this here is the shared object which we want to profile
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- make sure the profile is started. We can find out whether
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- this is necessary or not by observing the `_dl_profile_map'
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- variable. If it was NULL but is not NULL afterwards we must
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- start the profiling. */
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- struct link_map *old_profile_map = GL(dl_profile_map);
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-
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- _dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1);
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-
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- if (old_profile_map == NULL && GL(dl_profile_map) != NULL)
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- {
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- /* We must prepare the profiling. */
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- _dl_start_profile ();
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-
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- /* Prevent unloading the object. */
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- GL(dl_profile_map)->l_nodelete_active = true;
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- }
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- }
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- else
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-#endif
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- _dl_relocate_object (l, l->l_scope, reloc_mode, 0);
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- }
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+ _dl_open_relocate_one_object (args, r, new->l_initfini[i], reloc_mode,
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+ &relocation_in_progress);
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/* This only performs the memory allocations. The actual update of
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the scopes happens below, after failure is impossible. */
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