diff options
Diffstat (limited to 'resolv/nss_dns/dns-host.c')
| -rw-r--r-- | resolv/nss_dns/dns-host.c | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c index ed4be67337..4d46384ca7 100644 --- a/resolv/nss_dns/dns-host.c +++ b/resolv/nss_dns/dns-host.c @@ -120,11 +120,12 @@ typedef union querybuf static enum nss_status getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype, struct hostent *result, char *buffer, - size_t buflen, int *h_errnop); + size_t buflen, int *errnop, int *h_errnop); enum nss_status _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result, - char *buffer, size_t buflen, int *h_errnop) + char *buffer, size_t buflen, int *errnop, + int *h_errnop) { querybuf host_buffer; int size, type, n; @@ -141,7 +142,7 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result, break; default: *h_errnop = NETDB_INTERNAL; - __set_errno (EAFNOSUPPORT); + *errnop = EAFNOSUPPORT; return NSS_STATUS_UNAVAIL; } @@ -160,26 +161,28 @@ _nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result, if (n < 0) { *h_errnop = h_errno; + *errnop = errno; return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND; } return getanswer_r (&host_buffer, n, name, type, result, buffer, buflen, - h_errnop); + errnop, h_errnop); } enum nss_status _nss_dns_gethostbyname_r (const char *name, struct hostent *result, - char *buffer, size_t buflen, int *h_errnop) + char *buffer, size_t buflen, int *errnop, + int *h_errnop) { enum nss_status status = NSS_STATUS_NOTFOUND; if (_res.options & RES_USE_INET6) status = _nss_dns_gethostbyname2_r (name, AF_INET6, result, buffer, - buflen, h_errnop); + buflen, errnop, h_errnop); if (status == NSS_STATUS_NOTFOUND) status = _nss_dns_gethostbyname2_r (name, AF_INET, result, buffer, - buflen, h_errnop); + buflen, errnop, h_errnop); return status; } @@ -188,7 +191,7 @@ _nss_dns_gethostbyname_r (const char *name, struct hostent *result, enum nss_status _nss_dns_gethostbyaddr_r (const char *addr, int len, int af, struct hostent *result, char *buffer, size_t buflen, - int *h_errnop) + int *errnop, int *h_errnop) { static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff }; static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 }; @@ -224,13 +227,13 @@ _nss_dns_gethostbyaddr_r (const char *addr, int len, int af, size = IN6ADDRSZ; break; default: - __set_errno (EAFNOSUPPORT); + *errnop = EAFNOSUPPORT; *h_errnop = NETDB_INTERNAL; return NSS_STATUS_UNAVAIL; } if (size != len) { - __set_errno (EAFNOSUPPORT); + *errnop = EAFNOSUPPORT; *h_errnop = NETDB_INTERNAL; return NSS_STATUS_UNAVAIL; } @@ -256,14 +259,16 @@ _nss_dns_gethostbyaddr_r (const char *addr, int len, int af, if (n < 0) { *h_errnop = h_errno; + *errnop = errno; return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND; } status = getanswer_r (&host_buffer, n, qbuf, T_PTR, result, buffer, buflen, - h_errnop); + errnop, h_errnop); if (status != NSS_STATUS_SUCCESS) { *h_errnop = h_errno; + *errnop = errno; return status; } @@ -292,7 +297,7 @@ _nss_dns_gethostbyaddr_r (const char *addr, int len, int af, static enum nss_status getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype, struct hostent *result, char *buffer, size_t buflen, - int *h_errnop) + int *errnop, int *h_errnop) { struct host_data { @@ -344,7 +349,17 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype, n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen); if (n < 0 || (*name_ok) (bp) == 0) { - *h_errnop = NO_RECOVERY; + if (errno == EMSGSIZE) + { + /* There is not enough room in the input buffer. */ + *errnop = ERANGE; + *h_errnop = NETDB_INTERNAL; + } + else + { + *errnop = errno; + *h_errnop = NO_RECOVERY; + } return NSS_STATUS_UNAVAIL; } cp += n + QFIXEDSZ; @@ -358,7 +373,7 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype, n = strlen (bp) + 1; /* for the \0 */ if (n >= MAXHOSTNAMELEN) { - __set_h_errno (NO_RECOVERY); + *h_errnop = NO_RECOVERY; return NSS_STATUS_TRYAGAIN; } result->h_name = bp; |