From: Florian Weimer <fweimer@redhat.com>
To: libc-alpha@sourceware.org
Subject: [PATCH 12/28] elf: Make __rtld_env_path_list and __rtld_search_dirs global variables
Date: Thu, 01 Oct 2020 18:32:50 +0200 [thread overview]
Message-ID: <c937c21fab2ceee33e1e60cdab22684d6d76ffd0.1601569371.git.fweimer@redhat.com> (raw)
In-Reply-To: <cover.1601569371.git.fweimer@redhat.com>
They have been renamed from env_path_list and rtld_search_dirs to
avoid linknamespace issues.
This change will allow future use these variables in diagnostics.
---
elf/dl-load.c | 53 +++++++++++++++++++++++++-------------------------
include/link.h | 4 ++++
2 files changed, 31 insertions(+), 26 deletions(-)
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 5fbb8c9ad4..0c8fa72c4d 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -98,7 +98,7 @@ int __stack_prot attribute_hidden attribute_relro
/* This is the decomposed LD_LIBRARY_PATH search path. */
-static struct r_search_path_struct env_path_list attribute_relro;
+struct r_search_path_struct __rtld_env_path_list attribute_relro;
/* List of the hardware capabilities we might end up using. */
#ifdef SHARED
@@ -442,7 +442,7 @@ add_name_to_object (struct link_map *l, const char *name)
}
/* Standard search directories. */
-static struct r_search_path_struct rtld_search_dirs attribute_relro;
+struct r_search_path_struct __rtld_search_dirs attribute_relro;
static size_t max_dirnamelen;
@@ -702,9 +702,9 @@ _dl_init_paths (const char *llp, const char *source)
#endif
/* First set up the rest of the default search directory entries. */
- aelem = rtld_search_dirs.dirs = (struct r_search_path_elem **)
+ aelem = __rtld_search_dirs.dirs = (struct r_search_path_elem **)
malloc ((nsystem_dirs_len + 1) * sizeof (struct r_search_path_elem *));
- if (rtld_search_dirs.dirs == NULL)
+ if (__rtld_search_dirs.dirs == NULL)
{
errstring = N_("cannot create search path array");
signal_error:
@@ -715,16 +715,17 @@ _dl_init_paths (const char *llp, const char *source)
+ ncapstr * sizeof (enum r_dir_status))
/ sizeof (struct r_search_path_elem));
- rtld_search_dirs.dirs[0] = malloc (nsystem_dirs_len * round_size
- * sizeof (*rtld_search_dirs.dirs[0]));
- if (rtld_search_dirs.dirs[0] == NULL)
+ __rtld_search_dirs.dirs[0]
+ = malloc (nsystem_dirs_len * round_size
+ * sizeof (*__rtld_search_dirs.dirs[0]));
+ if (__rtld_search_dirs.dirs[0] == NULL)
{
errstring = N_("cannot create cache for search path");
goto signal_error;
}
- rtld_search_dirs.malloced = 0;
- pelem = GL(dl_all_dirs) = rtld_search_dirs.dirs[0];
+ __rtld_search_dirs.malloced = 0;
+ pelem = GL(dl_all_dirs) = __rtld_search_dirs.dirs[0];
strp = system_dirs;
idx = 0;
@@ -811,27 +812,27 @@ _dl_init_paths (const char *llp, const char *source)
if (*cp == ':' || *cp == ';')
++nllp;
- env_path_list.dirs = (struct r_search_path_elem **)
+ __rtld_env_path_list.dirs = (struct r_search_path_elem **)
malloc ((nllp + 1) * sizeof (struct r_search_path_elem *));
- if (env_path_list.dirs == NULL)
+ if (__rtld_env_path_list.dirs == NULL)
{
errstring = N_("cannot create cache for search path");
goto signal_error;
}
- (void) fillin_rpath (llp_tmp, env_path_list.dirs, ":;",
+ (void) fillin_rpath (llp_tmp, __rtld_env_path_list.dirs, ":;",
source, NULL, l);
- if (env_path_list.dirs[0] == NULL)
+ if (__rtld_env_path_list.dirs[0] == NULL)
{
- free (env_path_list.dirs);
- env_path_list.dirs = (void *) -1;
+ free (__rtld_env_path_list.dirs);
+ __rtld_env_path_list.dirs = (void *) -1;
}
- env_path_list.malloced = 0;
+ __rtld_env_path_list.malloced = 0;
}
else
- env_path_list.dirs = (void *) -1;
+ __rtld_env_path_list.dirs = (void *) -1;
}
@@ -1996,9 +1997,9 @@ open_path (const char *name, size_t namelen, int mode,
if (sps->malloced)
free (sps->dirs);
- /* rtld_search_dirs and env_path_list are attribute_relro, therefore
- avoid writing into it. */
- if (sps != &rtld_search_dirs && sps != &env_path_list)
+ /* __rtld_search_dirs and __rtld_env_path_list are
+ attribute_relro, therefore avoid writing to them. */
+ if (sps != &__rtld_search_dirs && sps != &__rtld_env_path_list)
sps->dirs = (void *) -1;
}
@@ -2146,8 +2147,8 @@ _dl_map_object (struct link_map *loader, const char *name,
}
/* Try the LD_LIBRARY_PATH environment variable. */
- if (fd == -1 && env_path_list.dirs != (void *) -1)
- fd = open_path (name, namelen, mode, &env_path_list,
+ if (fd == -1 && __rtld_env_path_list.dirs != (void *) -1)
+ fd = open_path (name, namelen, mode, &__rtld_env_path_list,
&realname, &fb,
loader ?: GL(dl_ns)[LM_ID_BASE]._ns_loaded,
LA_SER_LIBPATH, &found_other_class);
@@ -2236,8 +2237,8 @@ _dl_map_object (struct link_map *loader, const char *name,
if (fd == -1
&& ((l = loader ?: GL(dl_ns)[nsid]._ns_loaded) == NULL
|| __glibc_likely (!(l->l_flags_1 & DF_1_NODEFLIB)))
- && rtld_search_dirs.dirs != (void *) -1)
- fd = open_path (name, namelen, mode, &rtld_search_dirs,
+ && __rtld_search_dirs.dirs != (void *) -1)
+ fd = open_path (name, namelen, mode, &__rtld_search_dirs,
&realname, &fb, l, LA_SER_DEFAULT, &found_other_class);
/* Add another newline when we are tracing the library loading. */
@@ -2405,7 +2406,7 @@ _dl_rtld_di_serinfo (struct link_map *loader, Dl_serinfo *si, bool counting)
}
/* Try the LD_LIBRARY_PATH environment variable. */
- add_path (&p, &env_path_list, XXX_ENV);
+ add_path (&p, &__rtld_env_path_list, XXX_ENV);
/* Look at the RUNPATH information for this binary. */
if (cache_rpath (loader, &loader->l_runpath_dirs, DT_RUNPATH, "RUNPATH"))
@@ -2417,7 +2418,7 @@ _dl_rtld_di_serinfo (struct link_map *loader, Dl_serinfo *si, bool counting)
/* Finally, try the default path. */
if (!(loader->l_flags_1 & DF_1_NODEFLIB))
- add_path (&p, &rtld_search_dirs, XXX_default);
+ add_path (&p, &__rtld_search_dirs, XXX_default);
if (counting)
/* Count the struct size before the string area, which we didn't
diff --git a/include/link.h b/include/link.h
index aea268439c..d4714bc28d 100644
--- a/include/link.h
+++ b/include/link.h
@@ -79,6 +79,10 @@ struct r_search_path_struct
int malloced;
};
+/* Search path information computed by _dl_init_paths. */
+extern struct r_search_path_struct __rtld_search_dirs attribute_hidden;
+extern struct r_search_path_struct __rtld_env_path_list attribute_hidden;
+
/* Structure describing a loaded shared object. The `l_next' and `l_prev'
members form a chain of all the shared objects loaded at startup.
--
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Managing Directors: Charles Cachera, Brian Klemm, Laurie Krebs, Michael O'Neill
next prev parent reply other threads:[~2020-10-01 16:32 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 16:31 [PATCH 00/28] glibc-hwcaps support Florian Weimer
2020-10-01 16:31 ` [PATCH 01/28] elf: Do not search HWCAP subdirectories in statically linked binaries Florian Weimer
2020-10-01 18:22 ` Adhemerval Zanella
2020-10-01 18:24 ` Carlos O'Donell
2020-10-01 18:29 ` Adhemerval Zanella
2020-10-01 20:24 ` Carlos O'Donell
2020-10-01 16:31 ` [PATCH 02/28] elf: Implement __rtld_malloc_is_full Florian Weimer
2020-10-01 18:23 ` Adhemerval Zanella
2020-10-08 9:44 ` Florian Weimer
2020-10-01 16:31 ` [PATCH 03/28] elf: Implement _dl_write Florian Weimer
2020-10-05 19:46 ` Adhemerval Zanella
2020-10-01 16:31 ` [PATCH 04/28] elf: Extract command-line/environment variables state from rtld.c Florian Weimer
2020-10-06 20:45 ` Adhemerval Zanella
2020-10-08 11:32 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 05/28] elf: Move ld.so error/help output to _dl_usage Florian Weimer
2020-10-06 21:06 ` Adhemerval Zanella
2020-10-08 12:19 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 06/28] elf: Record whether paths come from LD_LIBRARY_PATH or --library-path Florian Weimer
2020-10-07 16:39 ` Adhemerval Zanella
2020-10-07 16:49 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 07/28] elf: Implement ld.so --help Florian Weimer
2020-10-07 17:16 ` Adhemerval Zanella
2020-10-08 13:13 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 08/28] elf: Implement ld.so --version Florian Weimer
2020-10-07 18:36 ` Adhemerval Zanella
2020-10-07 18:38 ` Adhemerval Zanella
2020-10-08 13:37 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 09/28] scripts/update-copyrights: Update csu/version.c, elf/dl-usage.c Florian Weimer
2020-10-07 18:41 ` Adhemerval Zanella
2020-10-01 16:32 ` [PATCH 10/28] elf: Use the term "program interpreter" in the ld.so help message Florian Weimer
2020-10-07 21:08 ` Adhemerval Zanella
2020-10-08 14:08 ` Florian Weimer
2020-10-01 16:32 ` [PATCH 11/28] elf: Print the full name of the dynamic loader " Florian Weimer
2020-10-08 12:38 ` Adhemerval Zanella
2020-10-01 16:32 ` Florian Weimer [this message]
2020-10-08 13:27 ` [PATCH 12/28] elf: Make __rtld_env_path_list and __rtld_search_dirs global variables Adhemerval Zanella
2020-10-01 16:32 ` [PATCH 13/28] elf: Add library search path information to ld.so --help Florian Weimer
2020-10-08 16:22 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 14/28] elf: Enhance ld.so --help to print HWCAP subdirectories Florian Weimer
2020-10-08 16:27 ` Adhemerval Zanella
2020-10-09 8:18 ` Florian Weimer
2020-10-09 13:49 ` Matheus Castanho
2020-10-09 17:08 ` Florian Weimer
2020-10-09 17:12 ` Florian Weimer
2020-10-09 18:54 ` Matheus Castanho
2020-10-12 9:47 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 15/28] elf: Do not pass GLRO(dl_platform), GLRO(dl_platformlen) to _dl_important_hwcaps Florian Weimer
2020-10-08 18:04 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 16/28] elf: Add glibc-hwcaps support for LD_LIBRARY_PATH Florian Weimer
2020-10-08 10:13 ` Szabolcs Nagy
2020-10-09 9:08 ` Florian Weimer
2020-10-09 10:50 ` Szabolcs Nagy
2020-10-09 10:55 ` Florian Weimer
2020-10-09 11:03 ` Szabolcs Nagy
2020-10-08 23:16 ` Paul A. Clarke
2020-10-09 8:56 ` Florian Weimer
2020-10-09 13:19 ` Adhemerval Zanella
2020-10-12 11:54 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 17/28] x86_64: Add glibc-hwcaps support Florian Weimer
2020-10-01 16:33 ` [PATCH 18/28] powerpc64le: " Florian Weimer
2020-10-01 18:56 ` Paul A. Clarke
2020-10-05 9:47 ` Florian Weimer
2020-10-05 19:15 ` Paul A. Clarke
2020-10-06 12:20 ` Florian Weimer
2020-10-06 17:45 ` Paul A. Clarke
2020-10-09 9:06 ` Florian Weimer
2020-10-01 16:33 ` [PATCH 19/28] s390x: Add " Florian Weimer
2020-10-01 16:33 ` [PATCH 20/28] aarch64: " Florian Weimer
2020-10-14 13:46 ` Adhemerval Zanella
2020-10-14 14:08 ` Florian Weimer
2020-10-14 14:15 ` Adhemerval Zanella
2020-10-14 14:37 ` Szabolcs Nagy
2020-10-14 14:43 ` Adhemerval Zanella
2020-10-14 15:13 ` Florian Weimer
2020-10-14 14:44 ` Florian Weimer
2020-10-14 15:09 ` Szabolcs Nagy
2020-10-01 16:33 ` [PATCH 21/28] elf: Add endianness markup to ld.so.cache Florian Weimer
2020-10-14 14:07 ` Adhemerval Zanella
2020-10-01 16:33 ` [PATCH 22/28] elf: Add extension mechanism " Florian Weimer
2020-10-15 17:52 ` Adhemerval Zanella
2020-10-30 12:22 ` Florian Weimer
2020-11-03 12:45 ` Adhemerval Zanella
2020-11-03 15:30 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 23/28] elf: Unify old and new format cache handling code in ld.so Florian Weimer
2020-10-16 14:37 ` Adhemerval Zanella
2020-10-30 13:22 ` Florian Weimer
2020-11-03 13:02 ` Adhemerval Zanella
2020-10-01 16:34 ` [PATCH 24/28] elf: Implement a string table for ldconfig, with tail merging Florian Weimer
2020-10-20 14:25 ` Adhemerval Zanella
2020-10-30 17:08 ` Florian Weimer
2020-11-03 13:05 ` Adhemerval Zanella
2020-11-03 15:29 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 25/28] elf: Implement tail merging of strings in ldconfig Florian Weimer
2020-10-22 21:08 ` Adhemerval Zanella
2020-10-30 17:36 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 26/28] elf: In ldconfig, extract the new_sub_entry function from search_dir Florian Weimer
2020-10-27 13:15 ` Adhemerval Zanella
2020-10-01 16:34 ` [PATCH 27/28] elf: Process glibc-hwcaps subdirectories in ldconfig Florian Weimer
2020-10-27 17:28 ` Adhemerval Zanella
2020-11-04 11:57 ` Florian Weimer
2020-10-01 16:34 ` [PATCH 28/28] elf: Add glibc-hwcaps subdirectory support to ld.so cache processing Florian Weimer
2020-10-01 16:50 ` [PATCH 00/28] glibc-hwcaps support H.J. Lu
2020-10-01 16:54 ` Florian Weimer
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