diff options
Diffstat (limited to 'libc/nscd')
| -rw-r--r-- | libc/nscd/netgroupcache.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/libc/nscd/netgroupcache.c b/libc/nscd/netgroupcache.c index 58234b149..be01fe867 100644 --- a/libc/nscd/netgroupcache.c +++ b/libc/nscd/netgroupcache.c @@ -241,7 +241,23 @@ addgetnetgrentX (struct database_dyn *db, int fd, request_header *req, if (buflen - req->key_len - bufused < needed) { buflen += MAX (buflen, 2 * needed); - buffer = xrealloc (buffer, buflen); + /* Save offset in the old buffer. We don't + bother with the NULL check here since + we'll do that later anyway. */ + size_t nhostdiff = nhost - buffer; + size_t nuserdiff = nuser - buffer; + size_t ndomaindiff = ndomain - buffer; + + char *newbuf = xrealloc (buffer, buflen); + /* Fix up the triplet pointers into the new + buffer. */ + nhost = (nhost ? newbuf + nhostdiff + : NULL); + nuser = (nuser ? newbuf + nuserdiff + : NULL); + ndomain = (ndomain ? newbuf + ndomaindiff + : NULL); + buffer = newbuf; } nhost = memcpy (buffer + bufused, |