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y2038: nscd: Modify nscd_helper to use __clock_gettime64

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The nscd/nscd_helper.c uses __clock_gettime to get current time and on this
basis calculate the relative timeout for poll.
By using __clock_gettime64 on systems with __WORDSIZE == 32 && __TIMESIZE != 64
the timeout is correctly calculated after time_t overflow.
This commit is contained in:
Lukasz Majewski 2020-03-16 13:50:23 +01:00
parent e008836c4a
commit 481d01fa2b
1 changed files with 9 additions and 8 deletions
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17
nscd/nscd_helper.c
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@ -37,6 +37,7 @@
#include <not-cancel.h> #include <not-cancel.h>
#include <kernel-features.h> #include <kernel-features.h>
#include <nss.h> #include <nss.h>
#include <struct___timespec64.h>
#include "nscd-client.h" #include "nscd-client.h"
@ -59,10 +60,10 @@ wait_on_socket (int sock, long int usectmo)
/* Handle the case where the poll() call is interrupted by a /* Handle the case where the poll() call is interrupted by a
signal. We cannot just use TEMP_FAILURE_RETRY since it might signal. We cannot just use TEMP_FAILURE_RETRY since it might
lead to infinite loops. */ lead to infinite loops. */
struct timespec now; struct __timespec64 now;
__clock_gettime (CLOCK_REALTIME, &now); __clock_gettime64 (CLOCK_REALTIME, &now);
long int end = (now.tv_sec * 1000 + usectmo int64_t end = (now.tv_sec * 1000 + usectmo
+ (now.tv_nsec + 500000) / 1000000); + (now.tv_nsec + 500000) / 1000000);
long int timeout = usectmo; long int timeout = usectmo;
while (1) while (1)
{ {
@ -71,7 +72,7 @@ wait_on_socket (int sock, long int usectmo)
break; break;
/* Recompute the timeout time. */ /* Recompute the timeout time. */
__clock_gettime (CLOCK_REALTIME, &now); __clock_gettime64 (CLOCK_REALTIME, &now);
timeout = end - ((now.tv_sec * 1000 timeout = end - ((now.tv_sec * 1000
+ (now.tv_nsec + 500000) / 1000000)); + (now.tv_nsec + 500000) / 1000000));
} }
@ -193,7 +194,7 @@ open_socket (request_type type, const char *key, size_t keylen)
memcpy (reqdata->key, key, keylen); memcpy (reqdata->key, key, keylen);
bool first_try = true; bool first_try = true;
struct timespec tvend = { 0, 0 }; struct __timespec64 tvend = { 0, 0 };
while (1) while (1)
{ {
#ifndef MSG_NOSIGNAL #ifndef MSG_NOSIGNAL
@ -212,8 +213,8 @@ open_socket (request_type type, const char *key, size_t keylen)
/* The daemon is busy wait for it. */ /* The daemon is busy wait for it. */
int to; int to;
struct timespec now; struct __timespec64 now;
__clock_gettime (CLOCK_REALTIME, &now); __clock_gettime64 (CLOCK_REALTIME, &now);
if (first_try) if (first_try)
{ {
tvend.tv_nsec = now.tv_nsec; tvend.tv_nsec = now.tv_nsec;