1 files changed, 43 insertions, 0 deletions
diff --git a/percent_m.c b/percent_m.c
new file mode 100644
index 0000000..bb11b22
--- /dev/null
+++ b/percent_m.c
@@ -0,0 +1,43 @@
+ /*
+  * Replace %m by system error message.
+  * 
+  * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
+  */
+
+#ifndef lint
+static char sccsid[] = "@(#) percent_m.c 1.1 94/12/28 17:42:37";
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+extern int errno;
+#ifndef SYS_ERRLIST_DEFINED
+extern char *sys_errlist[];
+extern int sys_nerr;
+#endif
+
+#include "mystdarg.h"
+
+char   *percent_m(obuf, ibuf)
+char   *obuf;
+char   *ibuf;
+{
+    char   *bp = obuf;
+    char   *cp = ibuf;
+
+    while (*bp = *cp)
+	if (*cp == '%' && cp[1] == 'm') {
+	    if (errno < sys_nerr && errno > 0) {
+		strcpy(bp, sys_errlist[errno]);
+	    } else {
+		sprintf(bp, "Unknown error %d", errno);
+	    }
+	    bp += strlen(bp);
+	    cp += 2;
+	} else {
+	    bp++, cp++;
+	}
+    return (obuf);
+}