175 lines
6.4 KiB
Diff
175 lines
6.4 KiB
Diff
commit 50b1b7a3905cbcdfbcc7eab335aa81478d711d1a
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Oct 8 15:33:00 2020 +0200
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elf: Make __rtld_env_path_list and __rtld_search_dirs global variables
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They have been renamed from env_path_list and rtld_search_dirs to
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avoid linknamespace issues.
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This change will allow future use these variables in diagnostics.
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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diff --git a/elf/dl-load.c b/elf/dl-load.c
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index 1403a2e9c04e9a16..2eb4f35b2467f7d8 100644
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--- a/elf/dl-load.c
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+++ b/elf/dl-load.c
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@@ -98,7 +98,7 @@ int __stack_prot attribute_hidden attribute_relro
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/* This is the decomposed LD_LIBRARY_PATH search path. */
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-static struct r_search_path_struct env_path_list attribute_relro;
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+struct r_search_path_struct __rtld_env_path_list attribute_relro;
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/* List of the hardware capabilities we might end up using. */
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#ifdef SHARED
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@@ -442,7 +442,7 @@ add_name_to_object (struct link_map *l, const char *name)
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}
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/* Standard search directories. */
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-static struct r_search_path_struct rtld_search_dirs attribute_relro;
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+struct r_search_path_struct __rtld_search_dirs attribute_relro;
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static size_t max_dirnamelen;
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@@ -702,9 +702,9 @@ _dl_init_paths (const char *llp, const char *source)
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#endif
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/* First set up the rest of the default search directory entries. */
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- aelem = rtld_search_dirs.dirs = (struct r_search_path_elem **)
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+ aelem = __rtld_search_dirs.dirs = (struct r_search_path_elem **)
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malloc ((nsystem_dirs_len + 1) * sizeof (struct r_search_path_elem *));
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- if (rtld_search_dirs.dirs == NULL)
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+ if (__rtld_search_dirs.dirs == NULL)
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{
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errstring = N_("cannot create search path array");
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signal_error:
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@@ -715,16 +715,17 @@ _dl_init_paths (const char *llp, const char *source)
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+ ncapstr * sizeof (enum r_dir_status))
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/ sizeof (struct r_search_path_elem));
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- rtld_search_dirs.dirs[0] = malloc (nsystem_dirs_len * round_size
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- * sizeof (*rtld_search_dirs.dirs[0]));
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- if (rtld_search_dirs.dirs[0] == NULL)
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+ __rtld_search_dirs.dirs[0]
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+ = malloc (nsystem_dirs_len * round_size
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+ * sizeof (*__rtld_search_dirs.dirs[0]));
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+ if (__rtld_search_dirs.dirs[0] == NULL)
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{
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errstring = N_("cannot create cache for search path");
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goto signal_error;
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}
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- rtld_search_dirs.malloced = 0;
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- pelem = GL(dl_all_dirs) = rtld_search_dirs.dirs[0];
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+ __rtld_search_dirs.malloced = 0;
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+ pelem = GL(dl_all_dirs) = __rtld_search_dirs.dirs[0];
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strp = system_dirs;
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idx = 0;
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@@ -811,27 +812,27 @@ _dl_init_paths (const char *llp, const char *source)
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if (*cp == ':' || *cp == ';')
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++nllp;
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- env_path_list.dirs = (struct r_search_path_elem **)
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+ __rtld_env_path_list.dirs = (struct r_search_path_elem **)
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malloc ((nllp + 1) * sizeof (struct r_search_path_elem *));
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- if (env_path_list.dirs == NULL)
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+ if (__rtld_env_path_list.dirs == NULL)
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{
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errstring = N_("cannot create cache for search path");
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goto signal_error;
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}
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- (void) fillin_rpath (llp_tmp, env_path_list.dirs, ":;",
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+ (void) fillin_rpath (llp_tmp, __rtld_env_path_list.dirs, ":;",
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source, NULL, l);
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- if (env_path_list.dirs[0] == NULL)
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+ if (__rtld_env_path_list.dirs[0] == NULL)
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{
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- free (env_path_list.dirs);
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- env_path_list.dirs = (void *) -1;
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+ free (__rtld_env_path_list.dirs);
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+ __rtld_env_path_list.dirs = (void *) -1;
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}
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- env_path_list.malloced = 0;
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+ __rtld_env_path_list.malloced = 0;
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}
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else
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- env_path_list.dirs = (void *) -1;
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+ __rtld_env_path_list.dirs = (void *) -1;
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}
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@@ -1946,9 +1947,9 @@ open_path (const char *name, size_t namelen, int mode,
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if (sps->malloced)
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free (sps->dirs);
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- /* rtld_search_dirs and env_path_list are attribute_relro, therefore
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- avoid writing into it. */
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- if (sps != &rtld_search_dirs && sps != &env_path_list)
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+ /* __rtld_search_dirs and __rtld_env_path_list are
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+ attribute_relro, therefore avoid writing to them. */
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+ if (sps != &__rtld_search_dirs && sps != &__rtld_env_path_list)
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sps->dirs = (void *) -1;
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}
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@@ -2096,8 +2097,8 @@ _dl_map_object (struct link_map *loader, const char *name,
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}
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/* Try the LD_LIBRARY_PATH environment variable. */
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- if (fd == -1 && env_path_list.dirs != (void *) -1)
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- fd = open_path (name, namelen, mode, &env_path_list,
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+ if (fd == -1 && __rtld_env_path_list.dirs != (void *) -1)
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+ fd = open_path (name, namelen, mode, &__rtld_env_path_list,
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&realname, &fb,
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loader ?: GL(dl_ns)[LM_ID_BASE]._ns_loaded,
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LA_SER_LIBPATH, &found_other_class);
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@@ -2186,8 +2187,8 @@ _dl_map_object (struct link_map *loader, const char *name,
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if (fd == -1
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&& ((l = loader ?: GL(dl_ns)[nsid]._ns_loaded) == NULL
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|| __glibc_likely (!(l->l_flags_1 & DF_1_NODEFLIB)))
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- && rtld_search_dirs.dirs != (void *) -1)
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- fd = open_path (name, namelen, mode, &rtld_search_dirs,
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+ && __rtld_search_dirs.dirs != (void *) -1)
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+ fd = open_path (name, namelen, mode, &__rtld_search_dirs,
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&realname, &fb, l, LA_SER_DEFAULT, &found_other_class);
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/* Add another newline when we are tracing the library loading. */
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@@ -2355,7 +2356,7 @@ _dl_rtld_di_serinfo (struct link_map *loader, Dl_serinfo *si, bool counting)
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}
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/* Try the LD_LIBRARY_PATH environment variable. */
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- add_path (&p, &env_path_list, XXX_ENV);
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+ add_path (&p, &__rtld_env_path_list, XXX_ENV);
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/* Look at the RUNPATH information for this binary. */
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if (cache_rpath (loader, &loader->l_runpath_dirs, DT_RUNPATH, "RUNPATH"))
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@@ -2367,7 +2368,7 @@ _dl_rtld_di_serinfo (struct link_map *loader, Dl_serinfo *si, bool counting)
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/* Finally, try the default path. */
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if (!(loader->l_flags_1 & DF_1_NODEFLIB))
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- add_path (&p, &rtld_search_dirs, XXX_default);
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+ add_path (&p, &__rtld_search_dirs, XXX_default);
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if (counting)
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/* Count the struct size before the string area, which we didn't
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diff --git a/include/link.h b/include/link.h
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index e90fa79a0b332087..cdd011f59445e490 100644
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--- a/include/link.h
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+++ b/include/link.h
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@@ -79,6 +79,10 @@ struct r_search_path_struct
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int malloced;
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};
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+/* Search path information computed by _dl_init_paths. */
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+extern struct r_search_path_struct __rtld_search_dirs attribute_hidden;
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+extern struct r_search_path_struct __rtld_env_path_list attribute_hidden;
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+
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/* Structure describing a loaded shared object. The `l_next' and `l_prev'
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members form a chain of all the shared objects loaded at startup.
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