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decouple Jehanne from 9P2000 (as much as needed)

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Jehanne is going to use a new file protocol, but Plan 9 is really
coupled with 9P2000.

Renamed fcall.h as 9P2000.h and introduced specific constants such
as NP_OREAD, NP_OWRITE and so on, so that we can use different values
in the kernel and new protocol.

Renamed devmnt to devninep, since it's actually a device serving 9P2000
file systems.

Also, fixed 9P2000 support in Jehanne, that was broken with the introduction
of OSTAT.
This commit is contained in:
Giacomo Tesio
2016-12-01 00:09:42 +01:00
parent bbb375a585
commit f52a185030
199 changed files with 649 additions and 512 deletions
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33
sys/include/libc.h
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@@ -551,21 +551,26 @@ extern void freenetconninfo(NetConnInfo*);
#define MCACHE 0x0010 /* cache some data */
#define MMASK 0x0017 /* all bits on */
#define OREAD 0 /* open for read */
#define OWRITE 1 /* write */
#define ORDWR 2 /* read and write */
#define OSTAT 4 /* open for stat/wstat */
#define OEXEC 7 /* execute, == read but check execute permission */
#define OTRUNC 16 /* or'ed in (except for exec), truncate file first */
#define OCEXEC 32 /* or'ed in, close on exec */
#define ORCLOSE 64 /* or'ed in, remove on close */
#define OEXCL 0x1000 /* or'ed in, exclusive use (create only) */
// #define OBEHIND 0x2000 /* use write behind for writes [for 9n] */
/* Open modes: Kernel reserved flags */
#define OSTAT 0x00 /* open for stat/wstat */
#define OREAD 0x01 /* open for read */
#define OWRITE 0x02 /* write */
#define ORDWR (OREAD|OWRITE) /* read and write */
#define OEXEC 0x04 /* execute, == read but check execute permission */
#define OCEXEC 0x08 /* or'ed in, close on exec */
#define ORCLOSE 0x10 /* or'ed in, remove on close */
#define OKMODE 0xff /* least significant byte reserved for kernel use */
#define AEXIST 0 /* accessible: exists */
#define AEXEC 1 /* execute access */
#define AWRITE 2 /* write access */
#define AREAD 4 /* read access */
/* Open modes: Popular flags among filesystems */
#define OTRUNC 0x0100 /* or'ed in (except for exec), truncate file first */
#define OEXCL 0x0200 /* or'ed in, exclusive create */
/* Access modes */
#define AEXIST OSTAT /* accessible: exists */
#define AREAD OREAD /* read access */
#define AWRITE OWRITE /* write access */
#define AEXEC OEXEC /* execute access */
#define AMASK (OSTAT|OREAD|OWRITE|OEXEC)
/* Segattch */
#define SG_RONLY 0040 /* read only */