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| author | Nathan Bossart <nathan@postgresql.org> | 2024-10-07 13:51:03 -0500 |
|---|---|---|
| committer | Nathan Bossart <nathan@postgresql.org> | 2024-10-07 13:51:03 -0500 |
| commit | 01731eeeaa9665b47a45b7d2c967ef4c06a56d1b (patch) | |
| tree | 170d150a9e0502860456f124efa22053c70e5a1a /src/backend/utils/init/miscinit.c | |
| parent | 8175a7d11f70589f6b44e28a8dd804f7542d0bbf (diff) | |
| download | postgresql-01731eeeaa9665b47a45b7d2c967ef4c06a56d1b.tar.gz postgresql-01731eeeaa9665b47a45b7d2c967ef4c06a56d1b.zip | |
Fix Y2038 issues with MyStartTime.
Several places treat MyStartTime as a "long", which is only 32 bits
wide on some platforms. In reality, MyStartTime is a pg_time_t,
i.e., a signed 64-bit integer. This will lead to interesting bugs
on the aforementioned systems in 2038 when signed 32-bit integers
are no longer sufficient to store Unix time (e.g., "pg_ctl start"
hanging). To fix, ensure that MyStartTime is handled as a 64-bit
value everywhere. (Of course, users will need to ensure that
time_t is 64 bits wide on their system, too.)
Co-authored-by: Max Johnson
Discussion: https://postgr.es/m/CO1PR07MB905262E8AC270FAAACED66008D682%40CO1PR07MB9052.namprd07.prod.outlook.com
Backpatch-through: 12
Diffstat (limited to 'src/backend/utils/init/miscinit.c')
| -rw-r--r-- | src/backend/utils/init/miscinit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/backend/utils/init/miscinit.c b/src/backend/utils/init/miscinit.c index 79373f2c8f0..8997193ca1c 100644 --- a/src/backend/utils/init/miscinit.c +++ b/src/backend/utils/init/miscinit.c @@ -1220,10 +1220,10 @@ CreateLockFile(const char *filename, bool amPostmaster, * both datadir and socket lockfiles; although more stuff may get added to * the datadir lockfile later. */ - snprintf(buffer, sizeof(buffer), "%d\n%s\n%ld\n%d\n%s\n", + snprintf(buffer, sizeof(buffer), "%d\n%s\n" INT64_FORMAT "\n%d\n%s\n", amPostmaster ? (int) my_pid : -((int) my_pid), DataDir, - (long) MyStartTime, + MyStartTime, PostPortNumber, socketDir); |