1 files changed, 37 insertions, 0 deletions
diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 0000000..2060ac9
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,37 @@
+#ifndef TTYD_UTIL_H
+#define TTYD_UTIL_H
+
+#define container_of(ptr, type, member)                \
+  ({                                                   \
+    const typeof(((type *)0)->member) *__mptr = (ptr); \
+    (type *)((char *)__mptr - offsetof(type, member)); \
+  })
+
+// malloc with NULL check
+void *xmalloc(size_t size);
+
+// realloc with NULL check
+void *xrealloc(void *p, size_t size);
+
+// Convert a string to upper case
+char *uppercase(char *str);
+
+// Check whether str ends with suffix
+bool endswith(const char *str, const char *suffix);
+
+// Get human readable signal string
+int get_sig_name(int sig, char *buf, size_t len);
+
+// Get signal code from string like SIGHUP
+int get_sig(const char *sig_name);
+
+// Set the given file descriptor close-on-exec
+bool fd_set_cloexec(const int fd);
+
+// Open uri with the default application of system
+int open_uri(char *uri);
+
+// Encode text to base64, the caller should free the returned string
+char *base64_encode(const unsigned char *buffer, size_t length);
+
+#endif  // TTYD_UTIL_H