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1999-06-02  David S. Miller  <davem@redhat.com>

	* nscd/nscd_gethst_r.c (nscd_gethst_r): Align the h_addr_list
	pointers properly.
This commit is contained in:
Ulrich Drepper 1999-06-02 11:05:06 +00:00
parent ea6710d38f
commit 3810076f75
2 changed files with 16 additions and 7 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
1999-06-02 David S. Miller <davem@redhat.com>
* nscd/nscd_gethst_r.c (nscd_gethst_r): Align the h_addr_list
pointers properly.
1999-06-02 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/sigaction.c: Read kernel-features.h

18
nscd/nscd_gethst_r.c
View File

@ -167,7 +167,8 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
struct iovec vec[4];
size_t *aliases_len;
char *cp = buffer;
uintptr_t align;
uintptr_t align1;
uintptr_t align2;
size_t total_len;
ssize_t cnt;
char *ignore;
@ -175,10 +176,13 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
/* A first check whether the buffer is sufficently large is possible. */
/* Now allocate the buffer the array for the group members. We must
align the pointer. */
align = ((__alignof__ (char *) - (cp - ((char *) 0)))
& (__alignof__ (char *) - 1));
if (buflen < (align + hst_resp.h_name_len
align the pointer and the base of the h_addr_list pointers. */
align1 = ((__alignof__ (char *) - (cp - ((char *) 0)))
& (__alignof__ (char *) - 1));
align2 = ((__alignof__ (char *) - ((cp + align1 + hst_resp.h_name_len)
- ((char *) 0)))
& (__alignof__ (char *) - 1));
if (buflen < (align1 + hst_resp.h_name_len + align2 +
+ ((hst_resp.h_aliases_cnt + hst_resp.h_addr_list_cnt + 2)
* sizeof (char *))
+ hst_resp.h_addr_list_cnt * (type == AF_INET
@ -189,7 +193,7 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
__close (sock);
return -1;
}
cp += align;
cp += align1;
/* Prepare the result as far as we can. */
resultbuf->h_aliases = (char **) cp;
@ -198,7 +202,7 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
cp += (hst_resp.h_addr_list_cnt + 1) * sizeof (char *);
resultbuf->h_name = cp;
cp += hst_resp.h_name_len;
cp += hst_resp.h_name_len + align2;
vec[0].iov_base = resultbuf->h_name;
vec[0].iov_len = hst_resp.h_name_len;