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Return EAI_SYSTEM if we're out of file descriptors

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Resolves BZ #14719.
This commit is contained in:
Siddhesh Poyarekar 2012-11-19 13:01:43 +05:30
parent f6da27e536
commit cfde9b463d
5 changed files with 46 additions and 7 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2012-11-19 Siddhesh Poyarekar <siddhesh@redhat.com>
[BZ #14719]
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)): Set h_errno to
NETDB_INTERNAL when NSS_STATUS_UNAVAIL.
* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname3_r): Set
h_errno to NETDB_INTERNAL when errno is EMFILE or ENFILE.
(_nss_dns_gethostbyname4_r): Likewise.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Set result to
EAI_SYSTEM if NSS_STATUS_UNAVAIL.
2012-11-19 Peng Haitao <penght@cn.fujitsu.com>
[BZ #13763]

4
NEWS
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@ -19,8 +19,8 @@ Version 2.17
14518, 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562,
14568, 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638,
14645, 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716,
14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14805,
14807, 14809, 14811, 14815, 14821, 14824, 14828, 14831, 14838.
14719, 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801,
14805, 14807, 14809, 14811, 14815, 14821, 14824, 14828, 14831, 14838.
* Port to ARM AArch64 contributed by Linaro.

7
nss/getXXbyYY_r.c
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@ -284,7 +284,12 @@ done:
#endif
*result = status == NSS_STATUS_SUCCESS ? resbuf : NULL;
#ifdef NEED_H_ERRNO
if (status != NSS_STATUS_SUCCESS && ! any_service)
if (status == NSS_STATUS_UNAVAIL)
/* Either we failed to lookup the functions or the functions themselves
had a system error. Set NETDB_INTERNAL here to let the caller know
that the errno may have the real reason for failure. */
*h_errnop = NETDB_INTERNAL;
else if (status != NSS_STATUS_SUCCESS && !any_service)
/* We were not able to use any service. */
*h_errnop = NO_RECOVERY;
#endif

25
resolv/nss_dns/dns-host.c
View File

@ -199,6 +199,11 @@ _nss_dns_gethostbyname3_r (const char *name, int af, struct hostent *result,
status = NSS_STATUS_TRYAGAIN;
h_errno = TRY_AGAIN;
break;
/* System has run out of file descriptors. */
case EMFILE:
case ENFILE:
h_errno = NETDB_INTERNAL;
/* Fall through. */
case ECONNREFUSED:
case ETIMEDOUT:
status = NSS_STATUS_UNAVAIL;
@ -311,14 +316,26 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
&ans2p, &nans2p, &resplen2);
if (n < 0)
{
if (errno == ESRCH)
switch (errno)
{
case ESRCH:
status = NSS_STATUS_TRYAGAIN;
h_errno = TRY_AGAIN;
break;
/* System has run out of file descriptors. */
case EMFILE:
case ENFILE:
h_errno = NETDB_INTERNAL;
/* Fall through. */
case ECONNREFUSED:
case ETIMEDOUT:
status = NSS_STATUS_UNAVAIL;
break;
default:
status = NSS_STATUS_NOTFOUND;
break;
}
else
status = (errno == ECONNREFUSED
? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND);
*herrnop = h_errno;
if (h_errno == TRY_AGAIN)
*errnop = EAGAIN;

6
sysdeps/posix/getaddrinfo.c
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@ -1049,6 +1049,12 @@ gaih_inet (const char *name, const struct gaih_service *service,
_res.options |= old_res_options & RES_USE_INET6;
if (status == NSS_STATUS_UNAVAIL)
{
result = GAIH_OKIFUNSPEC | -EAI_SYSTEM;
goto free_and_return;
}
if (no_data != 0 && no_inet6_data != 0)
{
/* If both requests timed out report this. */