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Commit9886744

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pg_ctl: Disable autoruns for cmd.exe on Windows
On Windows, cmd.exe is used to launch the postmaster process to ease itsredirection setup. However, cmd.exe may execute other programs atstartup due to autorun configurations, which could influence thepostmaster startup. This patch adds /D flag to the launcher cmd.execommand line to disable autorun settings written in the registry.This is arguably a bug, but no backpatch is done now out of caution.Reported-by: Hayato KurodaAuthor: Kyotaro HoriguchiReviewed-by: Robert Haas, Michael PaquierDiscussion:https://postgr.es/m/20230922.161551.320043332510268554.horikyota.ntt@gmail.com
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‎src/bin/pg_ctl/pg_ctl.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -552,11 +552,11 @@ start_postmaster(void)
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else
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close(fd);
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555-
cmd=psprintf("\"%s\" /C \"\"%s\" %s%s < \"%s\" >> \"%s\" 2>&1\"",
555+
cmd=psprintf("\"%s\" /D /C \"\"%s\" %s%s < \"%s\" >> \"%s\" 2>&1\"",
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comspec,exec_path,pgdata_opt,post_opts,DEVNULL,log_file);
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}
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else
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cmd=psprintf("\"%s\" /C \"\"%s\" %s%s < \"%s\" 2>&1\"",
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cmd=psprintf("\"%s\" /D /C \"\"%s\" %s%s < \"%s\" 2>&1\"",
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comspec,exec_path,pgdata_opt,post_opts,DEVNULL);
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if (!CreateRestrictedProcess(cmd,&pi, false))

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