--- /dev/null
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+extern int execvep(const char *path, char *const argv[], char *const envp[]);
+
+int execle(const char *file, const char *arg, ...)
+{
+ const char *shortargv[16];
+ const char **argv;
+ const char *c;
+ int i;
+ va_list args;
+ const char *const *envp;
+
+ i = 1;
+
+ va_start(args, arg);
+
+ do {
+ c = va_arg(args, const char *);
+
+ i++;
+ } while (c);
+
+ va_end(args);
+
+ if (i <= 16)
+ argv = shortargv;
+ else {
+ argv = (const char **) alloca(sizeof(char *) * i);
+ }
+
+ argv[0] = arg;
+ i = 1;
+
+ va_start(args, arg);
+
+ do {
+ argv[i] = va_arg(args, const char *);
+ } while (argv[i++]);
+
+ envp = va_arg (args, const char *const *);
+ va_end(args);
+
+ i = execvep(file, (char *const *) argv, (char *const *) envp);
+
+ if (argv != shortargv)
+ free(argv);
+
+ return i;
+}