* Initial version of nix.

This commit is contained in:
Eelco Dolstra 2003-03-13 14:24:49 +00:00
parent 841fcbd047
commit 75d788b0f2
8 changed files with 468 additions and 0 deletions

2
src/Makefile Normal file
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nix: nix.c
gcc -g -Wall -o nix nix.c -ldb-4

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src/nix.c Normal file
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <db4/db.h>
#define PKGINFO_PATH "/pkg/sys/var/pkginfo"
typedef enum {true = 1, false = 0} bool;
static char * prog;
static char * dbfile = PKGINFO_PATH;
DB * openDB(char * dbname, bool readonly)
{
int err;
DB * db;
err = db_create(&db, 0, 0);
if (err) {
fprintf(stderr, "error creating db handle: %s\n",
db_strerror(err));
return 0;
}
err = db->open(db, dbfile, dbname,
DB_HASH, readonly ? DB_RDONLY : DB_CREATE, 0666);
if (err) {
fprintf(stderr, "creating opening %s: %s\n",
dbfile, db_strerror(err));
db->close(db, 0);
return 0;
}
return db;
}
bool queryDB(char * dbname, char * key, char * * data)
{
DB * db = 0;
DBT kt, dt;
int err;
db = openDB(dbname, true);
if (!db) goto bad;
*data = 0;
memset(&kt, 0, sizeof(kt));
memset(&dt, 0, sizeof(dt));
kt.size = strlen(key);
kt.data = key;
err = db->get(db, 0, &kt, &dt, 0);
if (!err) {
*data = malloc(dt.size + 1);
memcpy(*data, dt.data, dt.size);
(*data)[dt.size] = 0;
} else if (err != DB_NOTFOUND) {
fprintf(stderr, "creating opening %s: %s\n",
dbfile, db_strerror(err));
goto bad;
}
db->close(db, 0);
return true;
bad:
if (db) db->close(db, 0);
return false;
}
bool setDB(char * dbname, char * key, char * data)
{
DB * db = 0;
DBT kt, dt;
int err;
db = openDB(dbname, false);
if (!db) goto bad;
memset(&kt, 0, sizeof(kt));
memset(&dt, 0, sizeof(dt));
kt.size = strlen(key);
kt.data = key;
dt.size = strlen(data);
dt.data = data;
err = db->put(db, 0, &kt, &dt, 0);
if (err) {
fprintf(stderr, "error storing data in %s: %s\n",
dbfile, db_strerror(err));
goto bad;
}
db->close(db, 0);
return true;
bad:
if (db) db->close(db, 0);
return false;
}
bool delDB(char * dbname, char * key)
{
DB * db = 0;
DBT kt;
int err;
db = openDB(dbname, false);
if (!db) goto bad;
memset(&kt, 0, sizeof(kt));
kt.size = strlen(key);
kt.data = key;
err = db->del(db, 0, &kt, 0);
if (err) {
fprintf(stderr, "error deleting data from %s: %s\n",
dbfile, db_strerror(err));
goto bad;
}
db->close(db, 0);
return true;
bad:
if (db) db->close(db, 0);
return false;
}
bool getPkg(int argc, char * * argv)
{
char * pkg;
char * src = 0;
char * inst = 0;
char inst2[1024];
char cmd[2048];
int res;
if (argc != 1) {
fprintf(stderr, "arguments missing in get-pkg\n");
return false;
}
pkg = argv[0];
if (!queryDB("pkginst", pkg, &inst)) return false;
if (inst) {
printf("%s\n", inst);
free(inst);
} else {
fprintf(stderr, "package %s is not yet installed\n", pkg);
if (!queryDB("pkgsrc", pkg, &src)) return false;
if (!src) {
fprintf(stderr, "source of package %s is not known\n", pkg);
return false;
}
if (snprintf(inst2, sizeof(inst2), "/pkg/%s", pkg) >= sizeof(inst2)) {
fprintf(stderr, "buffer overflow\n");
free(src);
return false;
}
if (snprintf(cmd, sizeof(cmd), "rsync -a \"%s\"/ \"%s\"",
src, inst2) >= sizeof(cmd))
{
fprintf(stderr, "buffer overflow\n");
free(src);
return false;
}
res = system(cmd);
if (!WIFEXITED(res) || WEXITSTATUS(res) != 0) {
fprintf(stderr, "unable to copy sources\n");
free(src);
return false;
}
if (chdir(inst2)) {
fprintf(stderr, "unable to chdir to package directory\n");
free(src);
return false;
}
/* Prepare for building. Clean the environment so that the
build process does not inherit things it shouldn't. */
setenv("PATH", "/pkg/sys/bin", 1);
res = system("./buildme");
if (!WIFEXITED(res) || WEXITSTATUS(res) != 0) {
fprintf(stderr, "unable to build package\n");
free(src);
return false;
}
setDB("pkginst", pkg, inst2);
free(src);
printf("%s\n", inst2);
}
return true;
}
bool registerPkg(int argc, char * * argv)
{
char * pkg;
char * src;
if (argc != 2) {
fprintf(stderr, "arguments missing in register-pkg\n");
return false;
}
pkg = argv[0];
src = argv[1];
return setDB("pkgsrc", pkg, src);
}
/* This is primarily used for bootstrapping. */
bool registerInstalledPkg(int argc, char * * argv)
{
char * pkg;
char * inst;
if (argc != 2) {
fprintf(stderr, "arguments missing in register-installed-pkg\n");
return false;
}
pkg = argv[0];
inst = argv[1];
if (strcmp(inst, "") == 0)
return delDB("pkginst", pkg);
else
return setDB("pkginst", pkg, inst);
}
bool run(int argc, char * * argv)
{
char * cmd;
if (argc < 1) {
fprintf(stderr, "command not specified\n");
return false;
}
cmd = argv[0];
argc--, argv++;
if (strcmp(cmd, "get-pkg") == 0)
return getPkg(argc, argv);
else if (strcmp(cmd, "register-pkg") == 0)
return registerPkg(argc, argv);
else if (strcmp(cmd, "register-installed-pkg") == 0)
return registerInstalledPkg(argc, argv);
else {
fprintf(stderr, "unknown command: %s\n", cmd);
return false;
}
}
int main(int argc, char * * argv)
{
int c;
prog = argv[0];
while ((c = getopt(argc, argv, "d:")) != EOF) {
switch (c) {
case 'd':
dbfile = optarg;
break;
default:
fprintf(stderr, "unknown option\n");
break;
}
}
argc -= optind, argv += optind;
if (!run(argc, argv))
return 1;
else
return 0;
}

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sys/bootstrap Executable file
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#! /bin/sh
. ./settings
if ! ./mountloop; then
exit 1
fi
# Cleanup.
rm -rf $target/dev
rm -rf $target/proc
# Create the basic directory structure.
mkdir $target
mkdir $target/dev
mkdir $target/proc
mkdir $target/pkg
mkdir $target/pkg/sys
mkdir $target/pkg/sys/bin
mkdir $target/pkg/sys/var
mkdir $target/mnt
mkdir $target/mnt/host
mkdir -m 1777 $target/tmp
# Make package registrations.
pkgdb=$target/pkg/sys/var/pkginfo
# Copy some programs and its libraries.
utils="/usr/bin/vi /bin/sh /bin/mount /bin/umount /bin/ls /bin/ln /bin/cp /bin/mv /bin/rm /bin/cat /bin/df /bin/pwd /usr/bin/ld /usr/bin/as /bin/sed /bin/chmod /bin/chown /usr/bin/expr /bin/mkdir /bin/rmdir /usr/bin/sort /usr/bin/uniq /bin/uname /usr/bin/grep /bin/sleep /usr/bin/rsync /usr/bin/make /usr/bin/cmp /bin/date /usr/bin/tr /usr/bin/ar /usr/bin/ranlib /usr/bin/basename /usr/bin/less ../src/nix"
bootlib=/pkg/prog-bootstrap/lib
bootbin=/pkg/prog-bootstrap/bin
mkdir -p $target/$bootlib
mkdir -p $target/$bootbin
cp -p $utils $target/$bootbin
libs=`ldd $utils | awk '{ print $3 }' | sort | uniq`
echo $libs
cp -p $libs $target/$bootlib
for i in libc.so.6 libdl.so.2 libpthread.so.0 librt.so.1 libresolv.so.2 ld-linux.so.2; do rm $target/$bootlib/$i; done
../src/nix -d $pkgdb register-installed-pkg prog-bootstrap /pkg/prog-bootstrap
mv $target/$bootbin/nix $target/pkg/sys/bin
../src/nix -d $pkgdb register-installed-pkg sys /pkg/sys
# Copy the bootstrap gcc.
echo Copying gcc...
rsync -a ../bootstrap/gcc/inst/pkg $target
../src/nix -d $pkgdb register-installed-pkg gcc-bootstrap /pkg/gcc-bootstrap
# Copy the bootstrap glibc.
echo Copying glibc...
glibcdir=/pkg/glibc-bootstrap
rsync -a ../bootstrap/glibc/inst/pkg $target
../src/nix -d $pkgdb register-installed-pkg glibc-bootstrap $glibcdir
# Copy the bootstrap kernel header files.
echo Copying kernel headers...
kerneldir=/pkg/kernel-bootstrap
rsync -a ../bootstrap/kernel/inst/pkg $target
../src/nix -d $pkgdb register-installed-pkg kernel-bootstrap $kerneldir
# Compatibility.
rm -rf $target/lib
mkdir $target/lib
ln -sf $glibcdir/lib/ld-linux.so.2 $target/lib/ld-linux.so.2
rm -rf $target/bin
mkdir $target/bin
ln -sf $bootbin/sh $target/bin/sh
# Build ld.so.cache.
ldsoconf=$target/$glibcdir/etc/ld.so.conf
echo $glibcdir/lib > $ldsoconf
echo $bootlib >> $ldsoconf
$target/$glibcdir/sbin/ldconfig -r $target
# Source repository.
rm -f $target/src
ln -sf /mnt/host/`pwd`/../src $target/src
# Copy boot script.
cp -p ./start $target/pkg/sys/bin
# Done.
echo Done!
umount $target
rmdir $target

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sys/makedisk Executable file
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#! /bin/sh
. ./settings
rm $image
dd if=/dev/zero of=$image bs=1M count=1 seek=256
/sbin/mke2fs -F -j $image
/sbin/tune2fs -c 0 $image
/sbin/tune2fs -i 0 $image

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sys/mountloop Executable file
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#! /bin/sh
. ./settings
mkdir $target
if ! mount -o loop -t ext3 $image $target; then
exit 1
fi

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sys/runsystem Executable file
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#! /bin/sh
. ./settings
linux ubd0=$image init=/pkg/sys/bin/start

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sys/settings Normal file
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image=/var/tmp/nix.img
target=./loop

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sys/start Executable file
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#! /pkg/prog-bootstrap/bin/sh
# This directory contains nix.
export PATH=/pkg/sys/bin
# Add in the utilities needed for booting.
export PATH=$PATH:`nix get-pkg prog-bootstrap`/bin
echo
echo Starting up...
echo Mounting file systems...
mount -n -o remount,rw /dev/root /
mount -n -t proc none /proc
mount -n -t hostfs none /mnt/host
echo Registering available src packages...
( cd /src
for i in *; do
if test -d $i; then
echo " $i"
nix register-pkg $i /src/$i
fi
done
)
export PATH=`nix get-pkg coreutils-4.5.7`/bin:$PATH
echo
echo "=== starting interactive shell ==="
sh
echo
echo Shutting down...
umount /proc
#sync
mount -n -o remount,ro /dev/root /
#sync