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80 lines
3.2 KiB
80 lines
3.2 KiB
1 year ago
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commit dbb75513f5cf9285c77c9e55777c5c35b653f890
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Tue Sep 6 07:38:10 2022 +0200
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elf: Rename _dl_sort_maps parameter from skip to force_first
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The new implementation will not be able to skip an arbitrary number
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of objects.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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diff --git a/elf/dl-sort-maps.c b/elf/dl-sort-maps.c
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index 72f4ff0e6eda3377..7c614bca5d8115c6 100644
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--- a/elf/dl-sort-maps.c
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+++ b/elf/dl-sort-maps.c
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@@ -27,12 +27,12 @@
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If FOR_FINI is true, this is called for finishing an object. */
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static void
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_dl_sort_maps_original (struct link_map **maps, unsigned int nmaps,
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- unsigned int skip, bool for_fini)
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+ bool force_first, bool for_fini)
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{
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/* Allows caller to do the common optimization of skipping the first map,
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usually the main binary. */
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- maps += skip;
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- nmaps -= skip;
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+ maps += force_first;
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+ nmaps -= force_first;
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/* A list of one element need not be sorted. */
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if (nmaps <= 1)
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@@ -182,7 +182,7 @@ dfs_traversal (struct link_map ***rpo, struct link_map *map,
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static void
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_dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
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- unsigned int skip __attribute__ ((unused)), bool for_fini)
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+ bool force_first __attribute__ ((unused)), bool for_fini)
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{
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for (int i = nmaps - 1; i >= 0; i--)
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maps[i]->l_visited = 0;
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@@ -286,7 +286,7 @@ _dl_sort_maps_init (void)
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void
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_dl_sort_maps (struct link_map **maps, unsigned int nmaps,
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- unsigned int skip, bool for_fini)
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+ bool force_first, bool for_fini)
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{
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/* It can be tempting to use a static function pointer to store and call
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the current selected sorting algorithm routine, but experimentation
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@@ -296,9 +296,9 @@ _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
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input cases. A simple if-case with direct function calls appears to
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be the fastest. */
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if (__glibc_likely (GLRO(dl_dso_sort_algo) == dso_sort_algorithm_original))
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- _dl_sort_maps_original (maps, nmaps, skip, for_fini);
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+ _dl_sort_maps_original (maps, nmaps, force_first, for_fini);
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else
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- _dl_sort_maps_dfs (maps, nmaps, skip, for_fini);
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+ _dl_sort_maps_dfs (maps, nmaps, force_first, for_fini);
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}
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#endif /* HAVE_TUNABLES. */
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diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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index 87ad2f3f4d89eb7d..8c0fe98f69a88f1e 100644
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--- a/sysdeps/generic/ldsodefs.h
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+++ b/sysdeps/generic/ldsodefs.h
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@@ -1106,9 +1106,11 @@ extern void _dl_init (struct link_map *main_map, int argc, char **argv,
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initializer functions have completed. */
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extern void _dl_fini (void) attribute_hidden;
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-/* Sort array MAPS according to dependencies of the contained objects. */
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+/* Sort array MAPS according to dependencies of the contained objects.
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+ If FORCE_FIRST, MAPS[0] keeps its place even if the dependencies
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+ say otherwise. */
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extern void _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
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- unsigned int skip, bool for_fini) attribute_hidden;
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+ bool force_first, bool for_fini) attribute_hidden;
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/* The dynamic linker calls this function before and having changing
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any shared object mappings. The `r_state' member of `struct r_debug'
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