From 1eb84534dea05d41afed1d898cba212ad7d310dd Mon Sep 17 00:00:00 2001
From: Chen Qi <Qi.Chen@windriver.com>
Date: Mon, 25 Feb 2019 13:41:41 +0800
Subject: [PATCH 02/24] don't use glibc-specific qsort_r

Upstream-Status: Inappropriate [musl specific]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
[Rebased for v241]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
[Rebased for v242]
Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
---
 src/basic/sort-util.h              | 14 --------------
 src/libsystemd/sd-hwdb/hwdb-util.c | 19 ++++++++++++++-----
 src/shared/format-table.c          | 36 ++++++++++++++++++++++++------------
 3 files changed, 38 insertions(+), 31 deletions(-)

diff --git a/src/basic/sort-util.h b/src/basic/sort-util.h
index e029f8646e..27d68b341c 100644
--- a/src/basic/sort-util.h
+++ b/src/basic/sort-util.h
@@ -54,17 +54,3 @@ static inline void qsort_safe(void *base, size_t nmemb, size_t size, __compar_fn
                 int (*_func_)(const typeof(p[0])*, const typeof(p[0])*) = func; \
                 qsort_safe((p), (n), sizeof((p)[0]), (__compar_fn_t) _func_); \
         })
-
-static inline void qsort_r_safe(void *base, size_t nmemb, size_t size, __compar_d_fn_t compar, void *userdata) {
-        if (nmemb <= 1)
-                return;
-
-        assert(base);
-        qsort_r(base, nmemb, size, compar, userdata);
-}
-
-#define typesafe_qsort_r(p, n, func, userdata)                          \
-        ({                                                              \
-                int (*_func_)(const typeof(p[0])*, const typeof(p[0])*, typeof(userdata)) = func; \
-                qsort_r_safe((p), (n), sizeof((p)[0]), (__compar_d_fn_t) _func_, userdata); \
-        })
diff --git a/src/libsystemd/sd-hwdb/hwdb-util.c b/src/libsystemd/sd-hwdb/hwdb-util.c
index c83575c7c8..72f8f3a050 100644
--- a/src/libsystemd/sd-hwdb/hwdb-util.c
+++ b/src/libsystemd/sd-hwdb/hwdb-util.c
@@ -128,9 +128,13 @@ static void trie_free(struct trie *trie) {
 
 DEFINE_TRIVIAL_CLEANUP_FUNC(struct trie*, trie_free);
 
-static int trie_values_cmp(const struct trie_value_entry *a, const struct trie_value_entry *b, struct trie *trie) {
-        return strcmp(trie->strings->buf + a->key_off,
-                      trie->strings->buf + b->key_off);
+static struct trie *trie_node_add_value_trie;
+static int trie_values_cmp(const void *v1, const void *v2) {
+        const struct trie_value_entry *a = v1;
+        const struct trie_value_entry *b = v2;
+
+        return strcmp(trie_node_add_value_trie->strings->buf + a->key_off,
+                      trie_node_add_value_trie->strings->buf + b->key_off);
 }
 
 static int trie_node_add_value(struct trie *trie, struct trie_node *node,
@@ -158,7 +162,10 @@ static int trie_node_add_value(struct trie *trie, struct trie_node *node,
                         .value_off = v,
                 };
 
-                val = typesafe_bsearch_r(&search, node->values, node->values_count, trie_values_cmp, trie);
+                trie_node_add_value_trie = trie;
+                val = bsearch(&search, node->values, node->values_count, sizeof(struct trie_value_entry), trie_values_cmp);
+                trie_node_add_value_trie = NULL;
+
                 if (val) {
                         /* At this point we have 2 identical properties on the same match-string.
                          * Since we process files in order, we just replace the previous value. */
@@ -184,7 +191,9 @@ static int trie_node_add_value(struct trie *trie, struct trie_node *node,
                 .line_number = line_number,
         };
         node->values_count++;
-        typesafe_qsort_r(node->values, node->values_count, trie_values_cmp, trie);
+        trie_node_add_value_trie = trie;
+        qsort(node->values, node->values_count, sizeof(struct trie_value_entry), trie_values_cmp);
+        trie_node_add_value_trie = NULL;
         return 0;
 }
 
diff --git a/src/shared/format-table.c b/src/shared/format-table.c
index a5c0a99b08..d595cbe372 100644
--- a/src/shared/format-table.c
+++ b/src/shared/format-table.c
@@ -850,31 +850,33 @@ static int cell_data_compare(TableData *a, size_t index_a, TableData *b, size_t
         return CMP(index_a, index_b);
 }
 
-static int table_data_compare(const size_t *a, const size_t *b, Table *t) {
+static Table *user_table;
+static int table_data_compare(const void *x, const void *y) {
+        const size_t *a = x, *b=y;
         size_t i;
         int r;
 
-        assert(t);
-        assert(t->sort_map);
+        assert(user_table);
+        assert(user_table->sort_map);
 
         /* Make sure the header stays at the beginning */
-        if (*a < t->n_columns && *b < t->n_columns)
+        if (*a < user_table->n_columns && *b < user_table->n_columns)
                 return 0;
-        if (*a < t->n_columns)
+        if (*a < user_table->n_columns)
                 return -1;
-        if (*b < t->n_columns)
+        if (*b < user_table->n_columns)
                 return 1;
 
         /* Order other lines by the sorting map */
-        for (i = 0; i < t->n_sort_map; i++) {
+        for (i = 0; i < user_table->n_sort_map; i++) {
                 TableData *d, *dd;
 
-                d = t->data[*a + t->sort_map[i]];
-                dd = t->data[*b + t->sort_map[i]];
+                d = user_table->data[*a + user_table->sort_map[i]];
+                dd = user_table->data[*b + user_table->sort_map[i]];
 
                 r = cell_data_compare(d, *a, dd, *b);
                 if (r != 0)
-                        return t->reverse_map && t->reverse_map[t->sort_map[i]] ? -r : r;
+                        return user_table->reverse_map && user_table->reverse_map[user_table->sort_map[i]] ? -r : r;
         }
 
         /* Order identical lines by the order there were originally added in */
@@ -1107,7 +1109,12 @@ int table_print(Table *t, FILE *f) {
                 for (i = 0; i < n_rows; i++)
                         sorted[i] = i * t->n_columns;
 
-                typesafe_qsort_r(sorted, n_rows, table_data_compare, t);
+                if (n_rows <= 1)
+                        return 0;
+                assert(sorted);
+                user_table = t;
+                qsort(sorted, n_rows, sizeof(size_t), table_data_compare);
+                user_table = NULL;
         }
 
         if (t->display_map)
@@ -1534,7 +1541,12 @@ int table_to_json(Table *t, JsonVariant **ret) {
                 for (i = 0; i < n_rows; i++)
                         sorted[i] = i * t->n_columns;
 
-                typesafe_qsort_r(sorted, n_rows, table_data_compare, t);
+                if (n_rows <= 1)
+                        return 0;
+                assert(sorted);
+                user_table = t;
+                qsort(sorted, n_rows, sizeof(size_t), table_data_compare);
+                user_table = NULL;
         }
 
         if (t->display_map)
-- 
2.11.0