Hook BSD err(), errx(), warn(), warnx(), etc. functions.

[coloredstderr/coloredstderr.git] / src / coloredstderr.c

diff --git a/src/coloredstderr.c b/src/coloredstderr.c
index eb9d92cc3c1148d6160e87c4aade4171d8fd2c91..247bd06ecc0d78cfd085574a7665a53b3a40b328 100644 (file)
--- a/src/coloredstderr.c
+++ b/src/coloredstderr.c
@@ -38,6 +38,9 @@
 #include <string.h>
 #include <unistd.h>
 
+#ifdef HAVE_ERR_H
+# include <err.h>
+#endif
 #ifdef HAVE_ERROR_H
 # include <error.h>
 #endif
@@ -265,6 +268,33 @@ HOOK_FD2(int, __overflow, f->_fileno, _IO_FILE *, f, int, ch)
 HOOK_VOID1(void, perror, STDERR_FILENO,
            char const *, s)
 
+/* err(3), non standard BSD extension */
+#ifdef HAVE_ERR_H
+HOOK_VAR_VOID2(void, err, STDERR_FILENO, verr,
+               int, eval, char const *, fmt)
+HOOK_VAR_VOID2(void, errx, STDERR_FILENO, verrx,
+               int, eval, char const *, fmt)
+HOOK_VAR_VOID1(void, warn, STDERR_FILENO, vwarn,
+               char const *, fmt)
+HOOK_VAR_VOID1(void, warnx, STDERR_FILENO, vwarnx,
+               char const *, fmt)
+HOOK_FUNC_SIMPLE3(void, verr, int, eval, const char *, fmt, va_list, args) {
+    /* Can't use verr() directly as it terminates the process which prevents
+     * the post string from being printed. */
+    vwarn(fmt, args);
+    exit(eval);
+}
+HOOK_FUNC_SIMPLE3(void, verrx, int, eval, const char *, fmt, va_list, args) {
+    /* See verr(). */
+    vwarnx(fmt, args);
+    exit(eval);
+}
+HOOK_VOID2(void, vwarn, STDERR_FILENO,
+           char const *, fmt, va_list, args)
+HOOK_VOID2(void, vwarnx, STDERR_FILENO,
+           char const *, fmt, va_list, args)
+#endif
+
 /* error(3), non-standard GNU extension */
 #ifdef HAVE_ERROR_H
 static void error_vararg(int status, int errnum,