Merge change 2470 into donut

* changes:
  Fix getservent() so that it returns s_port in network byte order. Also add a new document detailing known issues in the C library.
This commit is contained in:
Android (Google) Code Review
2009-05-27 03:29:35 -07:00
2 changed files with 27 additions and 2 deletions

20
libc/docs/ISSUES.TXT Normal file
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@@ -0,0 +1,20 @@
Bionic C Library Issues:
========================
This document lists important known issues of various releases
of the Bionic C library. Note that these differ from specific
implementation choices that are documented in the OVERVIEW.TXT
document.
Currently known issues:
-----------------------
- The C library initialization will improperly run static C++
constructors located in shared libraries twice.
Android-1.5 issues:
-------------------
- getservbyname() returned the port number in the s_port field of
the 'struct servent' structure in host-byte-order, instead of
network-byte-order.

View File

@@ -27,6 +27,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/endian.h>
#include <netdb.h> #include <netdb.h>
#include "servent.h" #include "servent.h"
#include "services.h" #include "services.h"
@@ -54,6 +55,7 @@ getservent_r( res_static rs )
int namelen; int namelen;
int nn,count; int nn,count;
int total = 0; int total = 0;
int port;
char* p2; char* p2;
p = rs->servent_ptr; p = rs->servent_ptr;
@@ -92,9 +94,12 @@ getservent_r( res_static rs )
memcpy( rs->servent.s_name, p+1, namelen ); memcpy( rs->servent.s_name, p+1, namelen );
rs->servent.s_name[namelen] = 0; rs->servent.s_name[namelen] = 0;
p += 1 + namelen; p += 1 + namelen;
rs->servent.s_port = ((((unsigned char*)p)[0] << 8) |
/* s_port must be in network byte order */
port = ((((unsigned char*)p)[0] << 8) |
((unsigned char*)p)[1]); ((unsigned char*)p)[1]);
rs->servent.s_port = htons(port);
rs->servent.s_proto = p[2] == 't' ? "tcp" : "udp"; rs->servent.s_proto = p[2] == 't' ? "tcp" : "udp";
p += 4; /* skip port(2) + proto(1) + aliascount(1) */ p += 4; /* skip port(2) + proto(1) + aliascount(1) */