xmkstemp allow setting file mode

* add usage comment function

5 files changed, 21 insertions, 6 deletions

diff --git a/include/utils.h b/include/utils.h
index d32a123..52f4f2d 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -55,7 +55,22 @@ void debug_shell();
  * @return system path to the temporary file
  * @return NULL on failure
  */
-char *xmkstemp(FILE **fp);
+char *xmkstemp(FILE **fp, const char *mode);
+
+/**
+ * Is the path an empty directory structure?
+ *
+ * ```c
+ * if (isempty_dir("/some/path")) {
+ *     fprintf(stderr, "The directory is is empty!\n");
+ * } else {
+ *     printf("The directory contains dirs/files\n");
+ * }
+ * ```
+ *
+ * @param path directory
+ * @return 0 = no, 1 = yes
+ */
 int isempty_dir(const char *path);
 
 #endif //OMC_UTILS_H
diff --git a/src/deliverable.c b/src/deliverable.c
index 4397c1c..b935b64 100644
--- a/src/deliverable.c
+++ b/src/deliverable.c
@@ -1215,7 +1215,7 @@ void delivery_rewrite_spec(struct Delivery *ctx, char *filename) {
         msg(OMC_MSG_ERROR, "failed to generate release header string\n", filename);
         exit(1);
     }
-    tempfile = xmkstemp(&tp);
+    tempfile = xmkstemp(&tp, "w");
     if (!tempfile || !tp) {
         msg(OMC_MSG_ERROR, "%s: unable to create temporary file\n", strerror(errno));
         exit(1);
diff --git a/src/docker.c b/src/docker.c
index 49d8b08..dafdd58 100644
--- a/src/docker.c
+++ b/src/docker.c
@@ -79,7 +79,7 @@ char *docker_ident() {
     char line[PATH_MAX];
     struct Process proc;
 
-    tempfile = xmkstemp(&fp);
+    tempfile = xmkstemp(&fp, "w");
     if (!fp || !tempfile) {
         return NULL;
     }
diff --git a/src/system.c b/src/system.c
index 154bd87..17b9a13 100644
--- a/src/system.c
+++ b/src/system.c
@@ -15,7 +15,7 @@ int shell(struct Process *proc, char *args) {
 
     FILE *tp = NULL;
     char *t_name;
-    t_name = xmkstemp(&tp);
+    t_name = xmkstemp(&tp, "w");
     if (!t_name || !tp) {
         return -1;
     }
diff --git a/src/utils.c b/src/utils.c
index d8cf929..2b4d275 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -470,12 +470,12 @@ void debug_shell() {
     exit(255);
 }
 
-char *xmkstemp(FILE **fp) {
+char *xmkstemp(FILE **fp, const char *mode) {
     char t_name[PATH_MAX];
     sprintf(t_name, "%s/%s", globals.tmpdir, "OMC.XXXXXX");
     int fd = mkstemp(t_name);
 
-    *fp = fdopen(fd, "w");
+    *fp = fdopen(fd, mode);
     if (!*fp) {
         if (fd > 0)
             close(fd);