[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/inet/hostid.c b/ap/build/uClibc/libc/inet/hostid.c
new file mode 100644
index 0000000..90b22ae
--- /dev/null
+++ b/ap/build/uClibc/libc/inet/hostid.c
@@ -0,0 +1,80 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#define __FORCE_GLIBC
+#include <features.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netdb.h>
+#include <not-cancel.h>
+
+#define HOSTID "/etc/hostid"
+
+#ifdef __USE_BSD
+int sethostid(long int new_id)
+{
+ int fd;
+ int ret;
+
+ if (geteuid() || getuid())
+ return __set_errno(EPERM);
+ fd = open_not_cancel(HOSTID, O_CREAT|O_WRONLY, 0644);
+ if (fd < 0)
+ return fd;
+ ret = write_not_cancel(fd, &new_id, sizeof(new_id)) == sizeof(new_id) ? 0 : -1;
+ close_not_cancel_no_status (fd);
+ return ret;
+}
+#endif
+
+#define _addr(a) (((struct sockaddr_in*)a->ai_addr)->sin_addr.s_addr)
+long int gethostid(void)
+{
+ char host[HOST_NAME_MAX + 1];
+ int fd, id = 0;
+
+ /* If hostid was already set then we can return that value.
+ * It is not an error if we cannot read this file. It is not even an
+ * error if we cannot read all the bytes, we just carry on trying...
+ */
+ fd = open_not_cancel_2(HOSTID, O_RDONLY);
+ if (fd >= 0) {
+ int i = read_not_cancel(fd, &id, sizeof(id));
+ close_not_cancel_no_status(fd);
+ if (i > 0)
+ return id;
+ }
+ /* Try some methods of returning a unique 32 bit id. Clearly IP
+ * numbers, if on the internet, will have a unique address. If they
+ * are not on the internet then we can return 0 which means they should
+ * really set this number via a sethostid() call. If their hostname
+ * returns the loopback number (i.e. if they have put their hostname
+ * in the /etc/hosts file with 127.0.0.1) then all such hosts will
+ * have a non-unique hostid, but it doesn't matter anyway and
+ * gethostid() will return a non zero number without the need for
+ * setting one anyway.
+ * Mitch
+ */
+ if (gethostname(host, HOST_NAME_MAX) >= 0 && *host) {
+ struct addrinfo hints, *results, *addr;
+ memset(&hints, 0, sizeof(struct addrinfo));
+ if (!getaddrinfo(host, NULL, &hints, &results)) {
+ for (addr = results; addr; addr = results->ai_next) {
+ /* Just so it doesn't look exactly like the
+ IP addr */
+ id = _addr(addr) << 16 | _addr(addr) >> 16;
+ break;
+ }
+ freeaddrinfo(results);
+ }
+ }
+ return id;
+}