AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename)
AC_CHECK_FUNCS(waitpid wait4 strlcpy strlcat initgroups memmove strdup)
-AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp dup2)
+AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp dup2 dprintf vdprintf)
AC_CHECK_FUNCS(isatty chown lchown link readlink symlink realpath)
AC_HAVE_DECL(setresuid, [#include <unistd.h>])
AC_HAVE_DECL(setresgid, [#include <unistd.h>])
}
#endif
+#ifndef HAVE_VDPRINTF
+int vdprintf(int fd, const char *format, va_list ap)
+{
+ char *s = NULL;
+ int ret;
+
+ vasprintf(&s, format, ap);
+ if (s == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+ ret = write(fd, s, strlen(s));
+ free(s);
+ return ret;
+}
+#endif
+
+#ifndef HAVE_DPRINTF
+int dprintf(int fd, const char *format, ...)
+{
+ int ret;
+ va_list ap;
+
+ va_start(ap, format);
+ ret = vdprintf(fd, format, ap);
+ va_end(ap);
+
+ return ret;
+}
+#endif
+