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-rw-r--r--gnu/packages/patches/glibc-versioned-locpath.patch240
1 files changed, 240 insertions, 0 deletions
diff --git a/gnu/packages/patches/glibc-versioned-locpath.patch b/gnu/packages/patches/glibc-versioned-locpath.patch
new file mode 100644
index 0000000000..bc7652127f
--- /dev/null
+++ b/gnu/packages/patches/glibc-versioned-locpath.patch
@@ -0,0 +1,240 @@
+The format of locale data can be incompatible between libc versions, and
+loading incompatible data can lead to 'setlocale' returning EINVAL at best
+or triggering an assertion failure at worst. See
+https://lists.gnu.org/archive/html/guix-devel/2015-09/msg00717.html
+for background information.
+
+To address that, this patch changes libc to honor a new 'GUIX_LOCPATH'
+variable, and to look for locale data in version-specific sub-directories of
+that variable. So, if GUIX_LOCPATH=/foo:/bar, locale data is searched for in
+/foo/X.Y and /bar/X.Y, where X.Y is the libc version number.
+
+That way, a single 'GUIX_LOCPATH' setting can work even if different libc
+versions coexist on the system.
+
+--- a/locale/newlocale.c
++++ b/locale/newlocale.c
+@@ -30,6 +30,7 @@
+ /* Lock for protecting global data. */
+ __libc_rwlock_define (extern , __libc_setlocale_lock attribute_hidden)
+
++extern error_t compute_locale_search_path (char **, size_t *);
+
+ /* Use this when we come along an error. */
+ #define ERROR_RETURN \
+@@ -48,7 +49,6 @@ __newlocale (int category_mask, const char *locale, __locale_t base)
+ __locale_t result_ptr;
+ char *locale_path;
+ size_t locale_path_len;
+- const char *locpath_var;
+ int cnt;
+ size_t names_len;
+
+@@ -102,17 +102,8 @@ __newlocale (int category_mask, const char *locale, __locale_t base)
+ locale_path = NULL;
+ locale_path_len = 0;
+
+- locpath_var = getenv ("LOCPATH");
+- if (locpath_var != NULL && locpath_var[0] != '\0')
+- {
+- if (__argz_create_sep (locpath_var, ':',
+- &locale_path, &locale_path_len) != 0)
+- return NULL;
+-
+- if (__argz_add_sep (&locale_path, &locale_path_len,
+- _nl_default_locale_path, ':') != 0)
+- return NULL;
+- }
++ if (compute_locale_search_path (&locale_path, &locale_path_len) != 0)
++ return NULL;
+
+ /* Get the names for the locales we are interested in. We either
+ allow a composite name or a single name. */
+diff --git a/locale/setlocale.c b/locale/setlocale.c
+index ead030d..0c0e314 100644
+--- a/locale/setlocale.c
++++ b/locale/setlocale.c
+@@ -215,12 +215,65 @@ setdata (int category, struct __locale_data *data)
+ }
+ }
+
++/* Return in *LOCALE_PATH and *LOCALE_PATH_LEN the locale data search path as
++ a colon-separated list. Return ENOMEN on error, zero otherwise. */
++error_t
++compute_locale_search_path (char **locale_path, size_t *locale_path_len)
++{
++ char* guix_locpath_var = getenv ("GUIX_LOCPATH");
++ char *locpath_var = getenv ("LOCPATH");
++
++ if (guix_locpath_var != NULL && guix_locpath_var[0] != '\0')
++ {
++ /* Entries in 'GUIX_LOCPATH' take precedence over 'LOCPATH'. These
++ entries are systematically prefixed with "/X.Y" where "X.Y" is the
++ libc version. */
++ if (__argz_create_sep (guix_locpath_var, ':',
++ locale_path, locale_path_len) != 0
++ || __argz_suffix_entries (locale_path, locale_path_len,
++ "/" VERSION) != 0)
++ goto bail_out;
++ }
++
++ if (locpath_var != NULL && locpath_var[0] != '\0')
++ {
++ char *reg_locale_path = NULL;
++ size_t reg_locale_path_len = 0;
++
++ if (__argz_create_sep (locpath_var, ':',
++ &reg_locale_path, &reg_locale_path_len) != 0)
++ goto bail_out;
++
++ if (__argz_append (locale_path, locale_path_len,
++ reg_locale_path, reg_locale_path_len) != 0)
++ goto bail_out;
++
++ free (reg_locale_path);
++ }
++
++ if (*locale_path != NULL)
++ {
++ /* Append the system default locale directory. */
++ if (__argz_add_sep (locale_path, locale_path_len,
++ _nl_default_locale_path, ':') != 0)
++ goto bail_out;
++ }
++
++ return 0;
++
++ bail_out:
++ free (*locale_path);
++ *locale_path = NULL;
++ *locale_path_len = 0;
++
++ return ENOMEM;
++}
++
+ char *
+ setlocale (int category, const char *locale)
+ {
+ char *locale_path;
+ size_t locale_path_len;
+- const char *locpath_var;
+ char *composite;
+
+ /* Sanity check for CATEGORY argument. */
+@@ -251,17 +304,10 @@ setlocale (int category, const char *locale)
+ locale_path = NULL;
+ locale_path_len = 0;
+
+- locpath_var = getenv ("LOCPATH");
+- if (locpath_var != NULL && locpath_var[0] != '\0')
++ if (compute_locale_search_path (&locale_path, &locale_path_len) != 0)
+ {
+- if (__argz_create_sep (locpath_var, ':',
+- &locale_path, &locale_path_len) != 0
+- || __argz_add_sep (&locale_path, &locale_path_len,
+- _nl_default_locale_path, ':') != 0)
+- {
+- __libc_rwlock_unlock (__libc_setlocale_lock);
+- return NULL;
+- }
++ __libc_rwlock_unlock (__libc_setlocale_lock);
++ return NULL;
+ }
+
+ if (category == LC_ALL)
+diff --git a/string/Makefile b/string/Makefile
+index 8424a61..f925503 100644
+--- a/string/Makefile
++++ b/string/Makefile
+@@ -38,7 +38,7 @@ routines := strcat strchr strcmp strcoll strcpy strcspn \
+ swab strfry memfrob memmem rawmemchr strchrnul \
+ $(addprefix argz-,append count create ctsep next \
+ delete extract insert stringify \
+- addsep replace) \
++ addsep replace suffix) \
+ envz basename \
+ strcoll_l strxfrm_l string-inlines memrchr \
+ xpg-strerror strerror_l
+diff --git a/string/argz-suffix.c b/string/argz-suffix.c
+new file mode 100644
+index 0000000..505b0f2
+--- /dev/null
++++ b/string/argz-suffix.c
+@@ -0,0 +1,56 @@
++/* Copyright (C) 2015 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++ Contributed by Ludovic Courtès <ludo@gnu.org>.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <argz.h>
++#include <errno.h>
++#include <stdlib.h>
++#include <string.h>
++
++
++error_t
++__argz_suffix_entries (char **argz, size_t *argz_len, const char *suffix)
++
++{
++ size_t suffix_len = strlen (suffix);
++ size_t count = __argz_count (*argz, *argz_len);
++ size_t new_argz_len = *argz_len + count * suffix_len;
++ char *new_argz = malloc (new_argz_len);
++
++ if (new_argz)
++ {
++ char *p = new_argz, *entry;
++
++ for (entry = *argz;
++ entry != NULL;
++ entry = argz_next (*argz, *argz_len, entry))
++ {
++ p = stpcpy (p, entry);
++ p = stpcpy (p, suffix);
++ p++;
++ }
++
++ free (*argz);
++ *argz = new_argz;
++ *argz_len = new_argz_len;
++
++ return 0;
++ }
++ else
++ return ENOMEM;
++}
++weak_alias (__argz_suffix_entries, argz_suffix_entries)
+diff --git a/string/argz.h b/string/argz.h
+index bb62a31..d276a35 100644
+--- a/string/argz.h
++++ b/string/argz.h
+@@ -134,6 +134,16 @@ extern error_t argz_replace (char **__restrict __argz,
+ const char *__restrict __str,
+ const char *__restrict __with,
+ unsigned int *__restrict __replace_count);
++
++/* Suffix each entry of ARGZ & ARGZ_LEN with SUFFIX. Return 0 on success,
++ and ENOMEN if memory cannot be allocated. */
++extern error_t __argz_suffix_entries (char **__restrict __argz,
++ size_t *__restrict __argz_len,
++ const char *__restrict __suffix);
++extern error_t argz_suffix_entries (char **__restrict __argz,
++ size_t *__restrict __argz_len,
++ const char *__restrict __suffix);
++
+
+ /* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
+ are no more. If entry is NULL, then the first entry is returned. This