Use the actual process image instead of module filename to dedup session#19415
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Use the actual process image instead of module filename to dedup session#19415
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Apparently, `GetModuleFileNameW` returns exactly the path (or prefix, in case of a DLL) passed to `CreateProcess` casing and all. Since we were using it to generate the uniquing hash for Portable and Unpackaged instances, this meant that `C:\Terminal\wt` and `C:\TeRmInAl\wt` were considered different instances. Whoops. Using `QueryFullProcessImageNameW` instead results in canonicalization. Maybe the kernel does it. I don't know. What I do know is that it works more correctly. Closes #19253
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DHowett
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…ion (#19415) Apparently, `GetModuleFileNameW` returns exactly the path (or prefix, in case of a DLL) passed to `CreateProcess` casing and all. Since we were using it to generate the uniquing hash for Portable and Unpackaged instances, this meant that `C:\Terminal\wt` and `C:\TeRmInAl\wt` were considered different instances. Whoops. Using `QueryFullProcessImageNameW` instead results in canonicalization. Maybe the kernel does it. I don't know. What I do know is that it works more correctly. (`Query...` goes through the kernel, while `GetModule...` goes through the loader. Interesting!) Closes #19253 (cherry picked from commit 9d7ea77) Service-Card-Id: PVTI_lADOAF3p4s4AxadtzgfkTus Service-Version: 1.23
DHowett
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Oct 8, 2025
…ion (#19415) Apparently, `GetModuleFileNameW` returns exactly the path (or prefix, in case of a DLL) passed to `CreateProcess` casing and all. Since we were using it to generate the uniquing hash for Portable and Unpackaged instances, this meant that `C:\Terminal\wt` and `C:\TeRmInAl\wt` were considered different instances. Whoops. Using `QueryFullProcessImageNameW` instead results in canonicalization. Maybe the kernel does it. I don't know. What I do know is that it works more correctly. (`Query...` goes through the kernel, while `GetModule...` goes through the loader. Interesting!) Closes #19253 (cherry picked from commit 9d7ea77) Service-Card-Id: PVTI_lADOAF3p4s4BBcTlzgfkTuo Service-Version: 1.24
dongle-the-gadget
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Oct 9, 2025
…ion (microsoft#19415) Apparently, `GetModuleFileNameW` returns exactly the path (or prefix, in case of a DLL) passed to `CreateProcess` casing and all. Since we were using it to generate the uniquing hash for Portable and Unpackaged instances, this meant that `C:\Terminal\wt` and `C:\TeRmInAl\wt` were considered different instances. Whoops. Using `QueryFullProcessImageNameW` instead results in canonicalization. Maybe the kernel does it. I don't know. What I do know is that it works more correctly. (`Query...` goes through the kernel, while `GetModule...` goes through the loader. Interesting!) Closes microsoft#19253
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Apparently,
GetModuleFileNameWreturns exactly the path (or prefix, in case of a DLL) passed toCreateProcesscasing and all. Since we were using it to generate the uniquing hash for Portable and Unpackaged instances, this meant thatC:\Terminal\wtandC:\TeRmInAl\wtwere considered different instances. Whoops.Using
QueryFullProcessImageNameWinstead results in canonicalization. Maybe the kernel does it. I don't know. What I do know is that it works more correctly.(
Query...goes through the kernel, whileGetModule...goes through the loader. Interesting!)Closes #19253