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Bionic: Libc: Resolv: Stricter function signatures, unitialized return bug fix.

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Stricter input parameters help avoid ugly casting when passing
	pointers to immutable protobuf data.
	While at it: an int return was dropped from 2 functions whose users
	never used the result; one of the return paths was returning an
	uninitialized value.
	Size_t for portablity and warning supression, misc warnings addressed.

Change-Id: I2d5cbdaf0c9b6c4621a7d397772da13da5dc0943
This commit is contained in:
Sasha Levitskiy
2013-02-27 15:48:55 -08:00
committed by Android (Google) Code Review
parent 6e1a5cf31b
commit fbae9f3c30
3 changed files with 41 additions and 38 deletions
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11
libc/private/resolv_cache.h
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@@ -28,6 +28,8 @@
#ifndef _RESOLV_CACHE_H_
#define _RESOLV_CACHE_H_
#include <stddef.h>
struct __res_state;
struct resolv_cache; /* forward */
@@ -67,14 +69,15 @@ extern struct in_addr* _resolv_get_addr_of_default_iface();
/* gets the address associated with the specified interface */
extern struct in_addr* _resolv_get_addr_of_iface(const char* ifname);
/* Copy the name of the default interface to provided buffer.
* Return length of buffer on success on failure -1 is returned */
extern int _resolv_get_default_iface(char* buff, int buffLen);
/* Copy the name of the default interface to the provided buffer.
* Returns the string length of the default interface,
* be that less or more than the buffLen, or 0 if nothing had been written */
extern size_t _resolv_get_default_iface(char* buff, size_t buffLen);
/* sets the name server addresses to the provided res_state structure. The
* name servers are retrieved from the cache which is associated
* with the interface to which the res_state structure is associated */
extern int _resolv_populate_res_for_iface(struct __res_state* statp);
extern void _resolv_populate_res_for_iface(struct __res_state* statp);
typedef enum {
RESOLV_CACHE_UNSUPPORTED, /* the cache can't handle that kind of queries */