glib-aux: add nm_utils_get_process_exit_status_desc_buf() helper

(cherry picked from commit 95e6ebec66f173c8b958ebbbbfb745fa41d5f83c)
(cherry picked from commit 431c219ad195cc1999ac326ea410240d1c7dba69)

2 files changed, 30 insertions, 7 deletions

diff --git a/src/libnm-glib-aux/nm-shared-utils.c b/src/libnm-glib-aux/nm-shared-utils.c
index 70db29f2b1..d5562233c7 100644
--- a/src/libnm-glib-aux/nm-shared-utils.c
+++ b/src/libnm-glib-aux/nm-shared-utils.c
@@ -6574,19 +6574,38 @@ nm_crypto_md5_hash(const guint8 *salt,
 
 /*****************************************************************************/
 
-char *
-nm_utils_get_process_exit_status_desc(int status)
+const char *
+nm_utils_get_process_exit_status_desc_buf(int status, char *buf, gsize buf_len)
 {
+    const char *buf0 = buf;
+
+    nm_assert(buf_len == 0 || buf);
+
+    /* This should give a partial sentence, it it can be combined with
+     * prinft("command XYZ %s.\n", desc) */
+
     if (WIFEXITED(status))
-        return g_strdup_printf("exited with status %d", WEXITSTATUS(status));
+        nm_strbuf_append(&buf, &buf_len, "exited with status %d", WEXITSTATUS(status));
     else if (WIFSIGNALED(status))
-        return g_strdup_printf("killed by signal %d", WTERMSIG(status));
+        nm_strbuf_append(&buf, &buf_len, "killed by signal %d", WTERMSIG(status));
     else if (WIFSTOPPED(status))
-        return g_strdup_printf("stopped by signal %d", WSTOPSIG(status));
+        nm_strbuf_append(&buf, &buf_len, "stopped by signal %d", WSTOPSIG(status));
     else if (WIFCONTINUED(status))
-        return g_strdup("resumed by SIGCONT)");
+        nm_strbuf_append(&buf, &buf_len, "resumed by SIGCONT");
     else
-        return g_strdup_printf("exited with unknown status 0x%x", status);
+        nm_strbuf_append(&buf, &buf_len, "exited with unknown status 0x%x", status);
+
+    return buf0;
+}
+
+char *
+nm_utils_get_process_exit_status_desc(int status)
+{
+    char buf[NM_UTILS_GET_PROCESS_EXIT_STATUS_BUF_LEN];
+
+    nm_utils_get_process_exit_status_desc_buf(status, buf, sizeof(buf));
+
+    return g_strdup(buf);
 }
 
 /*****************************************************************************/
diff --git a/src/libnm-glib-aux/nm-shared-utils.h b/src/libnm-glib-aux/nm-shared-utils.h
index f17b16460b..ad1d37dcd4 100644
--- a/src/libnm-glib-aux/nm-shared-utils.h
+++ b/src/libnm-glib-aux/nm-shared-utils.h
@@ -3299,6 +3299,10 @@ void nm_crypto_md5_hash(const guint8 *salt,
 
 /*****************************************************************************/
 
+#define NM_UTILS_GET_PROCESS_EXIT_STATUS_BUF_LEN 41
+
+const char *nm_utils_get_process_exit_status_desc_buf(int status, char *buf, gsize buf_len);
+
 char *nm_utils_get_process_exit_status_desc(int status);
 
 gboolean nm_utils_validate_hostname(const char *hostname);