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-rw-r--r--test/inet/tst-ethers-line.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/test/inet/tst-ethers-line.c b/test/inet/tst-ethers-line.c
new file mode 100644
index 0000000..182faf0
--- /dev/null
+++ b/test/inet/tst-ethers-line.c
@@ -0,0 +1,55 @@
+#include <netinet/ether.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+
+/* glibc 2.4 has no ETHER_FILE_NAME, host compile fails without this */
+#ifndef ETHER_FILE_NAME
+#define ETHER_FILE_NAME "/etc/ethers"
+#endif
+
+#define ETHER_LINE_LEN 256
+
+/* This test requires /etc/ethers to exist
+ * and to have nonzero length. You should create it manually,
+ * if it doesn't exist.
+ */
+
+int main(void)
+{
+ struct ether_addr addr;
+ char hostname[ETHER_LINE_LEN];
+ int fd, i;
+ const char *ethers;
+ struct stat statb;
+
+ if ((fd = open(ETHER_FILE_NAME, O_RDONLY)) == -1) {
+ perror ("Cannot open file /etc/ethers");
+ exit(1);
+ }
+
+ if (fstat(fd, &statb)) {
+ perror("Stat failed");
+ exit(1);
+ }
+ ethers = mmap(NULL, statb.st_size, PROT_READ, MAP_SHARED, fd, 0);
+
+ if (ethers == MAP_FAILED) {
+ perror("File mapping failed");
+ exit(1);
+ }
+
+ ether_line(ethers, &addr, hostname);
+
+ for (i = 0; i < 6; i++) {
+ printf("%02x", addr.ether_addr_octet[i]);
+ if (i < 5)
+ printf(":");
+ }
+ printf(" %s\n", hostname);
+
+ return 0;
+}