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Groups > comp.os.msdos.programmer > #4055
| From | "Auric__" <not.my.real@email.address> |
|---|---|
| Newsgroups | comp.os.msdos.programmer |
| Subject | Re: Booting process 0: how to find out its full path? |
| Date | 2021-11-16 16:54 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <XnsADE464DA8276Bauricauricauricauric@144.76.35.252> (permalink) |
| References | <20211116104416.2b3d207f@mateusz> |
Mateusz Viste wrote: > I am working on a shell that would replace COMMAND.COM and I wonder: is > there any way I can figure out where my shell is, once it is executed > by the MS-DOS kernel? > > By default MS-DOS launches whatever it finds at [BOOTDRV]:\COMMAND.COM. > This situation is easy, but there is also the possibility that the shell > was configured through a "SHELL" or "SHELLHIGH" CONFIG.SYS directive: > SHELL=X:\EXOTIC\PATH\CUSTOM.COM > > I am unable to find a way to discover the above path. Any ideas if this > is feasible at all? I went through RBIL but with no luck so far. > > The environment contains the full path/name of the executed program, > but this does not apply to process 0, as the MS-DOS kernel does not > allocate any environment for it (env segment in PSP = 0x0000). Just throwing out the obvious here... have you considered just looking through config.sys for the shell? -- "Armies with ammo" comes before "damsels in distress" alphabetically.
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Booting process 0: how to find out its full path? Mateusz Viste <mateusz@xyz.invalid> - 2021-11-16 10:44 +0100
Re: Booting process 0: how to find out its full path? "Auric__" <not.my.real@email.address> - 2021-11-16 16:54 +0000
Re: Booting process 0: how to find out its full path? Mateusz Viste <mateusz@xyz.invalid> - 2021-11-16 18:07 +0100
Re: Booting process 0: how to find out its full path? "Auric__" <not.my.real@email.address> - 2021-11-16 18:49 +0000
Re: Booting process 0: how to find out its full path? Mateusz Viste <mateusz@xyz.invalid> - 2021-11-16 20:46 +0100
Re: Booting process 0: how to find out its full path? JJ <jj4public@gmail.com> - 2021-11-17 08:23 +0700
Re: Booting process 0: how to find out its full path? Mateusz Viste <mateusz@xyz.invalid> - 2021-11-17 09:11 +0100
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