From e2d70a1735fc6b9d3c079814831ab0b1b2a9d1e0 Mon Sep 17 00:00:00 2001
From: Chen Qi <Qi.Chen@windriver.com>
Date: Mon, 25 Feb 2019 14:56:21 +0800
Subject: [PATCH] don't fail if GLOB_BRACE and GLOB_ALTDIRFUNC is not defined

If the standard library doesn't provide brace
expansion users just won't get it.

Dont use GNU GLOB extentions on non-glibc systems

Conditionalize use of GLOB_ALTDIRFUNC

Upstream-Status: Inappropriate [musl specific]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
[rebased for systemd 243]
Signed-off-by: Scott Murray <scott.murray@konsulko.com>

---
 src/basic/glob-util.c     | 12 ++++++++++++
 src/test/test-glob-util.c | 16 ++++++++++++++++
 src/tmpfiles/tmpfiles.c   | 10 ++++++++++
 3 files changed, 38 insertions(+)

diff --git a/src/basic/glob-util.c b/src/basic/glob-util.c
index e026b29478..815e56ef68 100644
--- a/src/basic/glob-util.c
+++ b/src/basic/glob-util.c
@@ -12,6 +12,12 @@
 #include "path-util.h"
 #include "strv.h"
 
+/* Don't fail if the standard library
+ * doesn't provide brace expansion */
+#ifndef GLOB_BRACE
+#define GLOB_BRACE 0
+#endif
+
 static void closedir_wrapper(void* v) {
         (void) closedir(v);
 }
@@ -19,6 +25,7 @@ static void closedir_wrapper(void* v) {
 int safe_glob(const char *path, int flags, glob_t *pglob) {
         int k;
 
+#ifdef GLOB_ALTDIRFUNC
         /* We want to set GLOB_ALTDIRFUNC ourselves, don't allow it to be set. */
         assert(!(flags & GLOB_ALTDIRFUNC));
 
@@ -32,9 +39,14 @@ int safe_glob(const char *path, int flags, glob_t *pglob) {
                 pglob->gl_lstat = lstat;
         if (!pglob->gl_stat)
                 pglob->gl_stat = stat;
+#endif
 
         errno = 0;
+#ifdef GLOB_ALTDIRFUNC
         k = glob(path, flags | GLOB_ALTDIRFUNC, NULL, pglob);
+#else
+        k = glob(path, flags, NULL, pglob);
+#endif
         if (k == GLOB_NOMATCH)
                 return -ENOENT;
         if (k == GLOB_NOSPACE)
diff --git a/src/test/test-glob-util.c b/src/test/test-glob-util.c
index 50b4924679..09c0a20aee 100644
--- a/src/test/test-glob-util.c
+++ b/src/test/test-glob-util.c
@@ -12,6 +12,12 @@
 #include "rm-rf.h"
 #include "tmpfile-util.h"
 
+/* Don't fail if the standard library
+ * doesn't provide brace expansion */
+#ifndef GLOB_BRACE
+#define GLOB_BRACE 0
+#endif
+
 static void test_glob_exists(void) {
         log_info("/* %s */", __func__);
 
@@ -41,11 +47,13 @@ static void test_glob_no_dot(void) {
         const char *fn;
 
         _cleanup_globfree_ glob_t g = {
+#ifdef GLOB_ALTDIRFUNC
                 .gl_closedir = closedir_wrapper,
                 .gl_readdir = (struct dirent *(*)(void *)) readdir_no_dot,
                 .gl_opendir = (void *(*)(const char *)) opendir,
                 .gl_lstat = lstat,
                 .gl_stat = stat,
+#endif
         };
 
         int r;
@@ -55,11 +63,19 @@ static void test_glob_no_dot(void) {
         assert_se(mkdtemp(template));
 
         fn = strjoina(template, "/*");
+#ifdef GLOB_ALTDIRFUNC
         r = glob(fn, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g);
+#else
+        r = glob(fn, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
+#endif
         assert_se(r == GLOB_NOMATCH);
 
         fn = strjoina(template, "/.*");
+#ifdef GLOB_ALTDIRFUNC
         r = glob(fn, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g);
+#else
+        r = glob(fn, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
+#endif
         assert_se(r == GLOB_NOMATCH);
 
         (void) rm_rf(template, REMOVE_ROOT|REMOVE_PHYSICAL);
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 7e85c50634..145c48a685 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -66,6 +66,12 @@
 #include "umask-util.h"
 #include "user-util.h"
 
+/* Don't fail if the standard library
+ * doesn't provide brace expansion */
+#ifndef GLOB_BRACE
+#define GLOB_BRACE 0
+#endif
+
 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
  * them in the file system. This is intended to be used to create
  * properly owned directories beneath /tmp, /var/tmp, /run, which are
@@ -1990,7 +1996,9 @@ finish:
 
 static int glob_item(Item *i, action_t action) {
         _cleanup_globfree_ glob_t g = {
+#ifdef GLOB_ALTDIRFUNC
                 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
+#endif
         };
         int r = 0, k;
         char **fn;
@@ -2010,7 +2018,9 @@ static int glob_item(Item *i, action_t action) {
 
 static int glob_item_recursively(Item *i, fdaction_t action) {
         _cleanup_globfree_ glob_t g = {
+#ifdef GLOB_ALTDIRFUNC
                 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
+#endif
         };
         int r = 0, k;
         char **fn;