diff options
| author | aiju <devnull@localhost> | 2017-02-23 23:22:49 +0100 |
|---|---|---|
| committer | aiju <devnull@localhost> | 2017-02-23 23:22:49 +0100 |
| commit | 54ec7aed6217f31e8d4f64678ff2260bd1dfaad2 (patch) | |
| tree | e38ee0cb33882e69b6fce38db93c346f0d30a856 /sys/src | |
| parent | 04171d24777d5a108df6e90e10fa7c8d0a841479 (diff) | |
auth/keyfs: support -r flag to mount read-only
Diffstat (limited to 'sys/src')
| -rw-r--r-- | sys/src/cmd/auth/keyfs.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sys/src/cmd/auth/keyfs.c b/sys/src/cmd/auth/keyfs.c index c32135df9..efab7e4c0 100644 --- a/sys/src/cmd/auth/keyfs.c +++ b/sys/src/cmd/auth/keyfs.c @@ -92,6 +92,7 @@ int nuser; ulong uniq = 1; Fcall rhdr, thdr; int usepass; +int readonly; char *warnarg; uchar mdata[8192 + IOHDRSZ]; int messagesize = sizeof mdata; @@ -137,7 +138,7 @@ char *(*fcalls[])(Fid*) = { static void usage(void) { - fprint(2, "usage: %s [-p] [-m mtpt] [-w warn] [keyfile]\n", argv0); + fprint(2, "usage: %s [-p] [-r] [-m mtpt] [-w warn] [keyfile]\n", argv0); exits("usage"); } @@ -165,6 +166,9 @@ main(int argc, char *argv[]) case 'w': warnarg = EARGF(usage()); break; + case 'r': + readonly = 1; + break; default: usage(); break; @@ -390,6 +394,8 @@ Create(Fid *f) if(!f->busy) return "create of unused fid"; + if(readonly) + return "mounted read-only"; name = rhdr.name; if(f->user != nil){ return "permission denied"; @@ -531,6 +537,8 @@ Write(Fid *f) if(!f->busy) return "permission denied"; + if(readonly) + return "mounted read-only"; n = rhdr.count; data = rhdr.data; switch(f->qtype){ @@ -613,6 +621,10 @@ Remove(Fid *f) { if(!f->busy) return "permission denied"; + if(readonly){ + Clunk(f); + return "mounted read-only"; + } if(f->qtype == Qwarnings) f->user->warnings = 0; else if(f->qtype == Quser) @@ -649,6 +661,8 @@ Wstat(Fid *f) if(!f->busy || f->qtype != Quser) return "permission denied"; + if(readonly) + return "mounted read-only"; if(rhdr.nstat > sizeof buf) return "wstat buffer too big"; if(convM2D(rhdr.stat, rhdr.nstat, &d, buf) == 0) @@ -712,6 +726,11 @@ writeusers(void) uchar *p, *buf; ulong expire; + if(readonly){ + fprint(2, "writeusers called while read-only; shouldn't happen\n"); + return; + } + /* what format to use */ keydblen = KEYDBLEN; keydboff = KEYDBOFF; |