all your root belongs to boot/boot - vx32 - Local 9vx git repository for patches.
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---
(DIR) commit 06c96392a91db65e4286fbf5b6c65a694a8c6300
(DIR) parent 66c63641d116dca26d9fcfa7f7ad7de827bd8fd0
(HTM) Author: Jesus Galan Lopez (yiyus) <yiyu.jgl@gmail.com>
Date: Fri, 25 Jun 2010 00:21:49 +0200
all your root belongs to boot/boot
Diffstat:
doc/9vx.1 | 40 +++++++++++++++++++------------
src/9vx/a/bootboot.ed | 58 ++++++++++++++++++++++++++++++
src/9vx/bootcode.9 | 0
src/9vx/conf.c | 35 ++++++++++++++-----------------
src/9vx/conf.h | 6 ++++--
src/9vx/devfs-posix.c | 50 ++++++++-----------------------
src/9vx/main.c | 107 ++++++++++++-------------------
7 files changed, 155 insertions(+), 141 deletions(-)
---
(DIR) diff --git a/doc/9vx.1 b/doc/9vx.1
@@ -15,6 +15,9 @@
t[
.I -u user
]
+t[
+.I bootargs
+]
.PP
.B 9vx-tap
t[
@@ -29,6 +32,9 @@
t[
.I -u user
]
+t[
+.I bootargs
+]
.SH DESCRIPTION
Plan 9 VX (or
.I 9vx
@@ -45,18 +51,22 @@ Options can be passed to
.I 9vx
as command line arguments or in configuration files specified with the
.I -p
-option (see below). If no
-.I root
-argument is present, the current directory is used.
-Alternatively, a file system can be specified in a 9vx.ini file.
+option (see below). The host file server will be visible from inside as
+.I #Z.
+One or more
+.I bootargs
+arguments will be passed to boot/boot as explained in boot(8), with the addition that
+tthe local method also supports local directories. The
+.I -r
+option sets
+.I nobootprompt=local!#Z/localroot
+tto boot from a local directory containing a Plan 9 tree.
If an
.I user
is not specified, the current user in the host operating system will be used.
Other options are:
.nr xx \w'\fL-m\f2name\ \ '
.TP \n(xxu
-.BI -b
-Run /boot/boot instead of bootscript
.TP
.BI -f
Do not fork at init
@@ -65,7 +75,9 @@ Do not fork at init
Do not start the gui
.TP
.BI -i
-Run rc instead of init
+Run rc instead of init (sets
+.I init=#Z/386/bin/rc
+)
.TP
.BI -t
Use tty for input/output
@@ -101,25 +113,23 @@ A
.I 9vx.ini
file contains a list of
.I parameter=value
-pairs in a similar fasion to plan9.ini(8). Available options are
-.I bootboot,
+pairs in a similar fasion to plan9.ini(8). Additional options are
.I nofork,
.I nogui,
.I initrc,
.I usetty,
.I memsize,
-.I netdev,
-.I macaddr
-(that can also be part of a netdev line),
-.I localroot
+.I netdev
and
-.I user.
-Other options will be passed to the boot process as environment variables.
+.I macaddr
+(that can also be part of a netdev line).
.SH BUGS
The menu system of plan9.ini(8) is not supported in
.I 9vx.ini
files.
.P
+kfs file systems are not supported by the included boot/boot
+.P
.I 9vx
is not so stable as native Plan9 systems.
.SH "SEE ALSO"
(DIR) diff --git a/src/9vx/a/bootboot.ed b/src/9vx/a/bootboot.ed
@@ -0,0 +1,58 @@
+diff -e plan9/sys/src/9/boot/aux.c 9vx/sys/src/9/boot/aux.c
+73,74c
+ exits(buf);
+.
+diff -e plan9/sys/src/9/boot/boot.c 9vx/sys/src/9/boot/boot.c
+154a
+Init:
+.
+94a
+ if(localroot){
+ srvcreate("boot", fd);
+ goto Init;
+ }
+.
+6a
+char *localroot;
+.
+diff -e plan9/sys/src/9/boot/boot.h 9vx/sys/src/9/boot/boot.h
+16a
+extern char* localroot;
+.
+diff -e plan9/sys/src/9/boot/local.c 9vx/sys/src/9/boot/local.c
+278d
+276a
+ if((fd = connectlocalroot()) < 0)
+.
+264a
+connectlocalroot(void)
+{
+ int fd;
+ char buf[1024];
+
+ if(stat(buf, statbuf, sizeof statbuf) < 0)
+ return -1;
+ localroot = disk;
+
+ /* create working fd for /srv/boot */
+ fd = open("#~/mntloop", ORDWR);
+ if(fd < 0){
+ print("open #~/mntloop: %r\n");
+ return -1;
+ }
+ write(fd, disk, strlen(disk));
+ return fd;
+}
+
+int
+.
+171c
+ return;
+.
+diff -e plan9/sys/src/9/pc/pcf 9vx/sys/src/9/pc/pcf
+119a
+ tcp
+.
+117,118c
+boot boot #Z/usr/local/9vx
+.
(DIR) diff --git a/src/9vx/bootcode.9 b/src/9vx/bootcode.9
Binary files differ.
(DIR) diff --git a/src/9vx/conf.c b/src/9vx/conf.c
@@ -12,8 +12,6 @@
#include "etherif.h"
#include "vether.h"
-extern char* localroot;
-
/*
* read configuration file
*/
@@ -120,9 +118,7 @@ iniopt(char *name, char *value)
if(*name == '*')
name++;
- if(strcmp(name, "bootboot") == 0)
- bootboot = 1;
- else if(strcmp(name, "initrc") == 0)
+ if(strcmp(name, "initrc") == 0)
initrc = 1;
else if(strcmp(name, "nofork") == 0)
nofork = 1;
@@ -155,8 +151,6 @@ iniopt(char *name, char *value)
}
else if(strcmp(name, "macaddr") == 0)
setmac(value);
- else if(strcmp(name, "localroot") == 0 && !localroot)
- localroot = value;
else if(strcmp(name, "user") == 0 && !username)
username = value;
}
@@ -172,23 +166,26 @@ inienv(char *name, char *value)
* Debugging: tell user what options we guessed.
*/
void
-printconfig(char *argv0, char **inifile, int n){
+printconfig(char *argv0){
int i;
- print("%s ", argv0);
- for(i=0; i<n; i++)
- print("-p %s ", inifile[i]);
- if(bootboot | nofork | nogui | initrc | usetty)
- print("-%s%s%s%s%s ", bootboot ? "b" : "", nofork ? "f " : "",
- nogui ? "g" : "", initrc ? "i " : "", usetty ? "t " : "");
+ print(argv0);
+ if(inifile)
+ print(" -p %s", inifile);
+ if(nofork | nogui | initrc | usetty)
+ print(" -%s%s%s%s", nofork ? "f " : "", nogui ? "g" : "",
+ initrc ? "i " : "", usetty ? "t " : "");
if(memsize != 0)
- print("-m %d ", memsize);
+ print(" -m %d", memsize);
for(i=0; i<nve; i++){
- print("-n %s", ve[i].tap ? "tap ": "");
+ print(" -n %s", ve[i].tap ? "tap ": "");
if(ve[i].dev != nil)
- print("%s ", ve[i].dev);
+ print(" %s", ve[i].dev);
if(ve[i].mac != nil)
- print("-a %s ", ve[i].mac);
+ print(" -a %s", ve[i].mac);
}
- print("-r %s -u %s\n", localroot, username);
+ print(" -u %s", username);
+ for(i = 0; i < bootargc; i++)
+ print(" %s", bootargv[i]);
+ print("\n");
}
\ No newline at end of file
(DIR) diff --git a/src/9vx/conf.h b/src/9vx/conf.h
@@ -4,16 +4,18 @@
char inibuf[BOOTARGSLEN];
char *iniline[MAXCONF];
-int bootboot; /* run /boot/boot instead of bootscript */
int initrc; /* run rc instead of init */
int nofork; /* do not fork at init */
int nogui; /* do not start the gui */
int usetty; /* use tty for input/output */
int memsize; /* memory size */
+int bootargc;
+char** bootargv;
+char* inifile;
char* username;
int readini(char *fn);
void inifields(void (*fp)(char*, char*));
void iniopt(char*, char*);
void inienv(char*, char*);
-void printconfig(char*, char**, int);
+void printconfig(char*);
(DIR) diff --git a/src/9vx/devfs-posix.c b/src/9vx/devfs-posix.c
@@ -34,8 +34,6 @@ enum
};
extern Path *addelem(Path*, char*, Chan*);
-char *localroot;
-
static char *uidtoname(int);
static char *gidtoname(int);
static int nametouid(char*);
@@ -48,12 +46,11 @@ struct UnixFd
{
int fd;
int issocket;
- int plan9; // rooted at localroot?
DIR* dir;
vlong diroffset;
QLock dirlock;
struct dirent *nextde;
- Path *path; // relative to localroot
+ Path *path;
};
void
@@ -106,34 +103,20 @@ fsattach(char *spec)
struct stat st;
Chan *c;
UnixFd *ufd;
- int plan9, dev;
+ int dev;
dev = 1;
- plan9 = 0;
if(spec && spec[0]){
- if(strcmp(spec, "plan9") == 0) {
- plan9 = 1;
- dev = 2;
- } else{
- snprint(up->genbuf, sizeof up->genbuf, "no file system #%C%s", FsChar, spec);
- error(up->genbuf);
- }
+ snprint(up->genbuf, sizeof up->genbuf, "no file system #%C%s", FsChar, spec);
+ error(up->genbuf);
}
- if(plan9){
- if(localroot == nil)
- error("no #Zplan9 root without -r");
- if(stat(localroot, &st) < 0)
- oserror();
- }else{
- if(stat("/", &st) < 0)
- oserror();
- }
+ if(stat("/", &st) < 0)
+ oserror();
- c = devattach(FsChar, spec);
+ c = devattach(FsChar, 0);
ufd = mallocz(sizeof(UnixFd), 1);
ufd->path = newpath("/");
- ufd->plan9 = plan9;
ufd->fd = -1;
c->aux = ufd;
@@ -182,20 +165,11 @@ fspath(Chan *c, char *suffix)
ufd = c->aux;
s = ufd->path->s;
- if(ufd->plan9){
- len = strlen(localroot)+strlen(s)+1;
- if(suffix)
- len += 1+strlen(suffix);
- t = smalloc(len);
- strcpy(t, localroot);
- strcat(t, s);
- }else{
- len = strlen(s)+1;
- if(suffix)
- len += 1+strlen(suffix);
- t = smalloc(len);
- strcpy(t, s);
- }
+ len = strlen(s)+1;
+ if(suffix)
+ len += 1+strlen(suffix);
+ t = smalloc(len);
+ strcpy(t, s);
if(suffix){
if(s[strlen(s)-1] != '/')
strcat(t, "/");
(DIR) diff --git a/src/9vx/main.c b/src/9vx/main.c
@@ -49,11 +49,11 @@ int doabort = 1; // for now
int abortonfault;
char* argv0;
char* conffile = "9vx";
+char* localroot;
Conf conf;
static Mach mach0;
-extern char* localroot;
extern int tracemmu;
extern int tracekdev;
extern int nuspace;
@@ -63,12 +63,13 @@ static void bootinit(void);
static void siginit(void);
static char* getuser(void);
+static char* nobootprompt(char*);
void
usage(void)
{
// TODO(yy): add debug and other options by ron
- fprint(2, "usage: 9vx [-p file.ini] [-bfgit] [-m memsize] [-n [tap] netdev] [-a macaddr] [-r root] [-u user]\n");
+ fprint(2, "usage: 9vx [-p file.ini] [-fgit] [-m memsize] [-n [tap] netdev] [-a macaddr] [-r root] [-u user] [bootargs]\n");
exit(1);
}
@@ -84,8 +85,6 @@ main(int argc, char **argv)
int i, n;
char *vedev;
char *inifile[32];
- char cwd[1024];
- char buf[1024];
/* Minimal set up to make print work. */
setmach(&mach0);
@@ -93,7 +92,6 @@ main(int argc, char **argv)
quotefmtinstall();
memset(iniline, 0, MAXCONF);
- localroot = nil;
memsize = 0;
n = 0;
nogui = 0;
@@ -134,9 +132,6 @@ main(int argc, char **argv)
case 'a':
setmac(EARGF(usage()));
break;
- case 'b':
- bootboot = 1;
- break;
case 'f':
nofork = 1;
break;
@@ -176,30 +171,24 @@ main(int argc, char **argv)
default:
usage();
}ARGEND
-
- if(argc != 0)
- usage();
/*
* Loop in reverse direction to overwrite older options
*/
- for(i=n-1; i>=0; i--)
+ for(i = n-1; i >= 0; i--)
if(readini(inifile[i]) != 0)
panic("error reading config file %s", inifile[i]);
- inifields(&iniopt);
-
- if(!bootboot){
- if(localroot == nil){
- if(getcwd(cwd, sizeof cwd) == nil)
- panic("getcwd: %r");
- localroot = cwd;
- }
- snprint(buf, sizeof buf, "%s/386/bin/rc", localroot);
- if(access(buf, 0) < 0)
- panic("%s does not exist", buf);
- }
+ bootargc = argc;
+ bootargv = argv;
+ /*
+ * bootargs have preference over -r
+ */
+ if(bootargc > 0)
+ localroot = nil;
+ inifields(&iniopt);
+
if(username == nil && (username = getuser()) == nil)
username = "tor";
eve = strdup(username);
@@ -230,7 +219,7 @@ main(int argc, char **argv)
*/
siginit();
- printconfig(argv0, inifile, n);
+ printconfig(argv0);
if(nve == 0)
ipdevtab = pipdevtab;
@@ -266,6 +255,18 @@ main(int argc, char **argv)
return 0; // Not reached
}
+char*
+nobootprompt(char *root) {
+ char cwd[1024];
+
+ if(root[0] != '/'){
+ if(getcwd(cwd, sizeof cwd) == nil)
+ panic("getcwd: %r");
+ root = cleanname(smprint("%s/%s", cwd, root));
+ }
+ return smprint("local!#Z%s", root);
+}
+
static char*
getuser(void)
{
@@ -298,22 +299,6 @@ confinit(void)
conf.ialloc = 1<<20;
}
-/*
- * Simple boot script. Init0 takes care of setting up the
- * environment variables and name space bindings that
- * are needed to run rc and /386/init.
- * Can't use #!/386/init -t directly, because init will treat
- * the extra argument /boot/boot as a command to run,
- * which will cause a loop.
- */
-static char *bootscript =
- "#!/386/bin/rc\n"
- "exec /386/init -t\n";
-
-static char *rcscript =
- "#!/386/bin/rc\n"
- "/386/bin/rc -i\n";
-
static void
bootinit(void)
{
@@ -322,7 +307,14 @@ bootinit(void)
* to ask for keys, so we have to embed a factotum binary,
* even if we don't execute it to provide a file system.
* Also, maybe /boot/boot needs it.
+ *
+ * factotum, fossil and venti are the normal Plan9 binary.
+ * bootcode.9 is the file bootpcf.out obtained applyng
+ * the patch in a/bootboot.ed and compiling with:
+ * mk 'CONF=pcf' bootpcf.out
*/
+ extern uchar bootcode[];
+ extern long bootlen;
extern uchar factotumcode[];
extern long factotumlen;
extern uchar fossilcode[];
@@ -330,14 +322,7 @@ bootinit(void)
extern uchar venticode[];
extern long ventilen;
- if(bootboot){
- extern uchar bootcode[];
- extern long bootlen;
- addbootfile("boot", bootcode, bootlen);
- }else if(initrc)
- addbootfile("boot", (uchar*)rcscript, strlen(rcscript));
- else
- addbootfile("boot", (uchar*)bootscript, strlen(bootscript));
+ addbootfile("boot", bootcode, bootlen);
addbootfile("factotum", factotumcode, factotumlen);
addbootfile("fossil", fossilcode, fossillen);
addbootfile("venti", venticode, ventilen);
@@ -434,7 +419,8 @@ bootargs(void *base)
ac = 0;
av[ac++] = pusharg("9vx");
- /* TODO: could use command line argc, argv here if it was useful */
+ for(i = 0; i < bootargc && ac < 32; i++)
+ av[ac++] = pusharg(bootargv[i]);
/* 4 byte word align stack */
sp = (uchar*)((uintptr)sp & ~3);
@@ -480,8 +466,6 @@ static void
init0(void)
{
char buf[2*KNAMELEN];
- Chan *c, *srvc;
- char *root;
up->nerrlab = 0;
if(waserror())
@@ -512,21 +496,10 @@ init0(void)
ksetenv("user", username, 0);
ksetenv("sysname", "vx32", 0);
inifields(&inienv);
-
- /* if we're not running /boot/boot, mount / and create /srv/boot */
- if(!bootboot){
- kbind("#Zplan9/", "/", MAFTER);
- kbind("#p", "/proc", MREPL);
-
- /* create working /srv/boot for backward compatibility */
- c = namec("#~/mntloop", Aopen, ORDWR, 0);
- root = "#Zplan9/";
- devtab[c->type]->write(c, root, strlen(root), 0);
- srvc = namec("#s/boot", Acreate, OWRITE, 0666);
- ksrvadd(srvc, c);
- cclose(srvc);
- cclose(c);
- }
+ if(initrc != 0)
+ inienv("init", "/386/bin/rc -i");
+ if(localroot)
+ inienv("nobootprompt", nobootprompt(localroot));
poperror();