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hjfs: add users command, fix newuser ? documentation

--- a/sys/man/8/hjfs

+++ b/sys/man/8/hjfs

@@ -27,6 +27,8 @@

 .I name

 .RI [ options ]

 .PP

+.B users

+.PP

 .B sync

 .PP

 .B debug-chdeind

@@ -113,10 +115,6 @@

 The options are

 .TF =leaderxx

 .TP

-.B ?

-Print the entry for

-.IR name .

-.TP

 .B :

 Add a group: add the name to

 .B /adm/users

@@ -156,6 +154,12 @@

 command the file server overwrites

 .B /adm/users

 to reflect the internal state of the user table.

+.PP

+.I Users

+reads the contents of file 

+.B /adm/users

+to initialize the file server's internal representation of the

+users structure.

 .PP

 .I Sync

 writes dirty blocks in memory to the magnetic disk cache.

--- a/sys/src/cmd/hjfs/auth.c

+++ b/sys/src/cmd/hjfs/auth.c

@@ -465,3 +465,4 @@

 		createuserdir(fs, argv[1], uid);

 	return 1;

 }

+

--- a/sys/src/cmd/hjfs/cons.c

+++ b/sys/src/cmd/hjfs/cons.c

@@ -322,6 +322,13 @@

 	return -1;

 }

+int

+cmdusers(int, char**)

+{

+	readusers(fsmain);

+	return 0;

+}

+

 extern int cmdnewuser(int, char **);

 Cmd cmds[] = {

@@ -334,6 +341,7 @@

 	{"sync", 1, cmdsync},

 	{"halt", 1, cmdhalt},

 	{"newuser", 0, cmdnewuser},

+	{"users", 1, cmdusers},

 	{"echo", 2, cmdecho},

 	{"df", 1, cmddf},

 	{"debug-deind", 2, cmddebugdeind},

--- a/sys/src/cmd/hjfs/fns.h

+++ b/sys/src/cmd/hjfs/fns.h

@@ -53,3 +53,4 @@

 int	ingroup(Fs *, short, short, int);

 void	workerinit(void);

 void	writeusers(Fs *);

+void	readusers(Fs *);

--- a/sys/src/cmd/hjfs/fs1.c

+++ b/sys/src/cmd/hjfs/fs1.c

@@ -214,7 +214,7 @@

 	dprint("writeusers: %r\n");

 }

-static void

+void

 readusers(Fs *fs)

 {

 	Chan *ch;

-- 

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