c7fbafe1ad
These days, DEV_OPEN calls to character drivers block the calling thread until completion or failure, and thus never return SUSPEND to the caller. The same already applied to BDEV_OPEN calls to block drivers. It has thus become impossible for a process to enter a state of being blocked on a device open call. There is currently no support for restarting device open calls to restarted character drivers. This support was present in the _DOPEN logic, but was already no longer triggering. In the future, this case should be handled by the thread performing the open request. Change-Id: I6cc1e7b4c9ed116c6ce160b315e6e060124dce00
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef _MINIX_PROCFS_H
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#define _MINIX_PROCFS_H
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/* The compatibility model is as follows. The current format should be retained
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* for as long as possible; new fields can be added at the end of the line,
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* because ps/top only read as much as they know of from the start of the line.
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* Once fields (really) have to be removed, or the whole line becomes too big
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* of a mess, a completely new format string can be put in, but with an
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* increased PSINFO_VERSION at the beginning. That way, older ps/top copies
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* will not misinterpret the new fields, but rather fail cleanly.
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*/
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#define PSINFO_VERSION 0
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/* Process types. */
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#define TYPE_TASK 'T'
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#define TYPE_SYSTEM 'S'
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#define TYPE_USER 'U'
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/* General process states. */
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#define STATE_SLEEP 'S'
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#define STATE_WAIT 'W'
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#define STATE_ZOMBIE 'Z'
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#define STATE_RUN 'R'
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#define STATE_STOP 'T'
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/* PM sleep states. */
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#define PSTATE_NONE '-'
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#define PSTATE_PAUSED 'P'
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#define PSTATE_WAITING 'W'
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#define PSTATE_SIGSUSP 'S'
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/* VFS block states. */
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#define FSTATE_NONE '-'
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#define FSTATE_PIPE 'P'
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#define FSTATE_LOCK 'L'
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#define FSTATE_POPEN 'O'
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#define FSTATE_SELECT 'S'
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#define FSTATE_TASK 'T'
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#define FSTATE_UNKNOWN '?'
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#endif /* _MINIX_PROCFS_H */
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