lib: Add GCC visibility(hidden) pragmas to private header files.

This prevents any of the private functions from being leaked out
through the library interface (at least when compiling with a
recent-enough gcc to support the visibility pragma).

diff --git a/Makefile.local b/Makefile.local
index a602ed08db082685a660ac8590b52a807afb4d5a..66ccd6d1e849b77c67940fc46399740b74808cff 100644 (file)
--- a/Makefile.local
+++ b/Makefile.local
@@ -249,7 +249,8 @@ notmuch_client_srcs =               \
        notmuch-time.c          \
        query-string.c          \
        show-message.c          \
-       json.c
+       json.c                  \
+       xutil.c
 
 notmuch_client_modules = $(notmuch_client_srcs:.c=.o)
 

diff --git a/lib/database-private.h b/lib/database-private.h
index bd72f670092b0846501e425de44eb69f91a13869..e42b8bb8d3283d52fba367643142c734b89ca027 100644 (file)
--- a/lib/database-private.h
+++ b/lib/database-private.h
@@ -34,6 +34,8 @@
 
 #include <xapian.h>
 
+#pragma GCC visibility push(hidden)
+
 struct _notmuch_database {
     notmuch_bool_t exception_reported;
 
@@ -65,4 +67,6 @@ notmuch_tags_t *
 _notmuch_convert_tags (void *ctx, Xapian::TermIterator &i,
                       Xapian::TermIterator &end);
 
+#pragma GCC visibility pop
+
 #endif

diff --git a/lib/libsha1.h b/lib/libsha1.h
index b4dca93bab9026af9f75e69fbcc11838b1c12a49..c1c848fc4431d4e4161f81c1ed17590a91912313 100644 (file)
--- a/lib/libsha1.h
+++ b/lib/libsha1.h
@@ -43,6 +43,8 @@ extern "C"
 
 #include <stdint.h>
 
+#pragma GCC visibility push(hidden)
+
 /* Size of SHA1 digest */
 
 #define SHA1_DIGEST_SIZE 20
@@ -60,6 +62,8 @@ void sha1_hash(const unsigned char data[], unsigned long len, sha1_ctx ctx[1]);
 void sha1_end(unsigned char hval[], sha1_ctx ctx[1]);
 void sha1(unsigned char hval[], const unsigned char data[], unsigned long len);
 
+#pragma GCC visibility pop
+
 #if defined(__cplusplus)
 }
 #endif

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 5a0cf92540619ff5fa50951c5326c84e191051b8..5b32f84a75ff4c316fa64e7b278dc973a4d4c851 100644 (file)
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -48,6 +48,8 @@ NOTMUCH_BEGIN_DECLS
 
 #include "xutil.h"
 
+#pragma GCC visibility push(hidden)
+
 #ifdef DEBUG
 # define DEBUG_DATABASE_SANITY 1
 # define DEBUG_QUERY 1
@@ -442,6 +444,8 @@ _notmuch_tags_add_tag (notmuch_tags_t *tags, const char *tag);
 void
 _notmuch_tags_prepare_iterator (notmuch_tags_t *tags);
 
+#pragma GCC visibility pop
+
 NOTMUCH_END_DECLS
 
 #endif

diff --git a/lib/xutil.h b/lib/xutil.h
index b973f7dcbf752f4cca74d69ef86bcf027cde3aaa..fd77f733a5b33a35dfb32bcb3055c0c1147a5303 100644 (file)
--- a/lib/xutil.h
+++ b/lib/xutil.h
@@ -25,6 +25,8 @@
 #include <sys/types.h>
 #include <regex.h>
 
+#pragma GCC visibility push(hidden)
+
 /* xutil.c */
 void *
 xcalloc (size_t nmemb, size_t size);
@@ -48,4 +50,6 @@ int
 xregexec (const regex_t *preg, const char *string,
          size_t nmatch, regmatch_t pmatch[], int eflags);
 
+#pragma GCC visibility pop
+
 #endif

diff --git a/xutil.c b/xutil.c
new file mode 100644 (file)
index 0000000..5f98f3f
--- /dev/null
+++ b/xutil.c
@@ -0,0 +1,138 @@
+/* xutil.c - Various wrapper functions to abort on error.
+ *
+ * Copyright © 2009 Carl Worth
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see http://www.gnu.org/licenses/ .
+ *
+ * Author: Carl Worth <cworth@cworth.org>
+ */
+
+#include "notmuch-private.h"
+
+#include <stdio.h>
+
+void *
+xcalloc (size_t nmemb, size_t size)
+{
+    void *ret;
+
+    ret = calloc (nmemb, size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+void *
+xmalloc (size_t size)
+{
+    void *ret;
+
+    ret = malloc (size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+void *
+xrealloc (void *ptr, size_t size)
+{
+    void *ret;
+
+    ret = realloc (ptr, size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+char *
+xstrdup (const char *s)
+{
+    char *ret;
+
+    ret = strdup (s);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+char *
+xstrndup (const char *s, size_t n)
+{
+    char *ret;
+
+    if (strlen (s) <= n)
+       n = strlen (s);
+
+    ret = malloc (n + 1);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+    memcpy (ret, s, n);
+    ret[n] = '\0';
+
+    return ret;
+}
+
+void
+xregcomp (regex_t *preg, const char *regex, int cflags)
+{
+    int rerr;
+
+    rerr = regcomp (preg, regex, cflags);
+    if (rerr) {
+       size_t error_size = regerror (rerr, preg, NULL, 0);
+       char *error = xmalloc (error_size);
+
+       regerror (rerr, preg, error, error_size);
+       fprintf (stderr, "Internal error: compiling regex %s: %s\n",
+                regex, error);
+       exit (1);
+    }
+}
+
+int
+xregexec (const regex_t *preg, const char *string,
+         size_t nmatch, regmatch_t pmatch[], int eflags)
+{
+    unsigned int i;
+    int rerr;
+
+    rerr = regexec (preg, string, nmatch, pmatch, eflags);
+    if (rerr)
+       return rerr;
+
+    for (i = 0; i < nmatch; i++) {
+       if (pmatch[i].rm_so == -1) {
+           fprintf (stderr, "Internal error: matching regex against %s:"
+                    "Sub-match %d not found\n",
+                    string, i);
+           exit (1);
+       }
+    }
+
+    return 0;
+}