glibc/SOURCES/glibc-rh1971664-3.patch

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2022-05-10 07:16:26 +00:00
commit b17d29b390154df9dfad9d21f1e6605422521fd2
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Jun 7 14:22:19 2021 +0530
gconv_conf: Read configuration files in gconv-modules.d
Read configuration files with names ending in .conf in
GCONV_PATH/gconv-modules.d to mirror configuration flexibility in
iconvconfig into the iconv program and function.
Reviewed-by: DJ Delorie <dj@redhat.com>
diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c
index f173cde71b2a61d7..8eb981fca7cee36a 100644
--- a/iconv/gconv_conf.c
+++ b/iconv/gconv_conf.c
@@ -19,6 +19,7 @@
#include <assert.h>
#include <ctype.h>
+#include <dirent.h>
#include <errno.h>
#include <limits.h>
#include <locale.h>
@@ -30,6 +31,7 @@
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
+#include <sys/types.h>
#include <libc-lock.h>
#include <gconv_int.h>
@@ -50,6 +52,7 @@ static const struct path_elem empty_path_elem = { NULL, 0 };
/* Name of the file containing the module information in the directories
along the path. */
static const char gconv_conf_filename[] = "gconv-modules";
+static const char gconv_conf_dirname[] = "gconv-modules.d";
/* Filename extension for the modules. */
#ifndef MODULE_EXT
@@ -554,18 +557,52 @@ __gconv_read_conf (void)
for (cnt = 0; __gconv_path_elem[cnt].name != NULL; ++cnt)
{
+#define BUF_LEN elem_len + sizeof (gconv_conf_dirname)
+
const char *elem = __gconv_path_elem[cnt].name;
size_t elem_len = __gconv_path_elem[cnt].len;
- char *filename;
+ char *buf;
/* No slash needs to be inserted between elem and gconv_conf_filename;
elem already ends in a slash. */
- filename = alloca (elem_len + sizeof (gconv_conf_filename));
- __mempcpy (__mempcpy (filename, elem, elem_len),
- gconv_conf_filename, sizeof (gconv_conf_filename));
+ buf = alloca (BUF_LEN);
+ char *cp = __mempcpy (__mempcpy (buf, elem, elem_len),
+ gconv_conf_filename, sizeof (gconv_conf_filename));
+
+ /* Read the gconv-modules configuration file first. */
+ read_conf_file (buf, elem, elem_len, &modules, &nmodules);
+
+ /* Next, see if there is a gconv-modules.d directory containing
+ configuration files and if it is non-empty. */
+ cp--;
+ cp[0] = '.';
+ cp[1] = 'd';
+ cp[2] = '\0';
+
+ DIR *confdir = __opendir (buf);
+ if (confdir != NULL)
+ {
+ struct dirent *ent;
+ while ((ent = __readdir (confdir)) != NULL)
+ {
+ if (ent->d_type != DT_REG)
+ continue;
+
+ size_t len = strlen (ent->d_name);
+ const char *suffix = ".conf";
- /* Read the next configuration file. */
- read_conf_file (filename, elem, elem_len, &modules, &nmodules);
+ if (len > strlen (suffix)
+ && strcmp (ent->d_name + len - strlen (suffix), suffix) == 0)
+ {
+ /* LEN <= PATH_MAX so this alloca is not unbounded. */
+ char *conf = alloca (BUF_LEN + len + 1);
+ cp = stpcpy (conf, buf);
+ sprintf (cp, "/%s", ent->d_name);
+ read_conf_file (conf, elem, elem_len, &modules, &nmodules);
+ }
+ }
+ __closedir (confdir);
+ }
}
#endif