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-rw-r--r--package/lua/patches/400-luaposix_5.1.4-embedded.patch1458
-rw-r--r--package/lua/patches/410-bitlib_25-embedded.patch186
2 files changed, 1644 insertions, 0 deletions
diff --git a/package/lua/patches/400-luaposix_5.1.4-embedded.patch b/package/lua/patches/400-luaposix_5.1.4-embedded.patch
new file mode 100644
index 0000000000..73d8eb03ba
--- /dev/null
+++ b/package/lua/patches/400-luaposix_5.1.4-embedded.patch
@@ -0,0 +1,1458 @@
+Index: lua-5.1.4/src/Makefile
+===================================================================
+--- lua-5.1.4.orig/src/Makefile 2008-09-25 12:19:44.000000000 +0200
++++ lua-5.1.4/src/Makefile 2008-09-25 12:20:03.000000000 +0200
+@@ -12,7 +12,7 @@
+ AR= ar rcu
+ RANLIB= ranlib
+ RM= rm -f
+-LIBS= -lm $(MYLIBS)
++LIBS= -lm -lcrypt $(MYLIBS)
+
+ MYCFLAGS=
+ MYLDFLAGS=
+@@ -29,7 +29,7 @@
+ lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \
+ lundump.o lvm.o lzio.o lnum.o
+ LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
+- lstrlib.o loadlib.o linit.o
++ lstrlib.o loadlib.o linit.o lposix.o
+
+ LUA_T= lua
+ LUA_O= lua.o
+Index: lua-5.1.4/src/linit.c
+===================================================================
+--- lua-5.1.4.orig/src/linit.c 2008-09-25 12:19:02.000000000 +0200
++++ lua-5.1.4/src/linit.c 2008-09-25 12:19:32.000000000 +0200
+@@ -23,6 +23,7 @@
+ {LUA_STRLIBNAME, luaopen_string},
+ {LUA_MATHLIBNAME, luaopen_math},
+ {LUA_DBLIBNAME, luaopen_debug},
++ {LUA_POSIXLIBNAME, luaopen_posix},
+ {NULL, NULL}
+ };
+
+Index: lua-5.1.4/src/lposix.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ lua-5.1.4/src/lposix.c 2008-09-25 12:16:29.000000000 +0200
+@@ -0,0 +1,1139 @@
++/*
++* lposix.c
++* POSIX library for Lua 5.1.
++* Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br>
++* 07 Apr 2006 23:17:49
++* Clean up and bug fixes by Leo Razoumov <slonik.az@gmail.com> 2006-10-11 <!LR>
++* Based on original by Claudio Terra for Lua 3.x.
++* With contributions by Roberto Ierusalimschy.
++*/
++
++#include <sys/stat.h>
++#include <sys/times.h>
++#include <sys/types.h>
++#include <sys/utsname.h>
++#include <sys/wait.h>
++
++#include <dirent.h>
++#include <errno.h>
++#include <fcntl.h>
++#include <glob.h>
++#include <grp.h>
++#include <libgen.h>
++#include <limits.h>
++#include <poll.h>
++#include <pwd.h>
++#include <signal.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <syslog.h>
++#include <time.h>
++#include <unistd.h>
++#include <utime.h>
++
++#define MYNAME "posix"
++#define MYVERSION MYNAME " library for " LUA_VERSION " / Jan 2008"
++
++#ifndef ENABLE_SYSLOG
++#define ENABLE_SYSLOG 1
++#endif
++
++#include "lua.h"
++#include "lualib.h"
++#include "lauxlib.h"
++
++#include "modemuncher.c"
++
++/* compatibility with Lua 5.0 */
++#ifndef LUA_VERSION_NUM
++static int luaL_checkoption (lua_State *L, int narg, const char *def,
++ const char *const lst[]) {
++ const char *name = (def) ? luaL_optstring(L, narg, def) :
++ luaL_checkstring(L, narg);
++ int i = luaL_findstring(name, lst);
++ if (i == -1)
++ luaL_argerror(L, narg, lua_pushfstring(L, "invalid option '%s'", name));
++ return i;
++}
++#define lua_pushinteger lua_pushnumber
++#define lua_createtable(L,a,r) lua_newtable(L)
++#define LUA_FILEHANDLE "FILE*"
++
++#define lua_setfield(l,i,k)
++#define lua_getfield(l,i,k)
++
++#endif
++
++static const struct { char c; mode_t b; } M[] =
++{
++ {'r', S_IRUSR}, {'w', S_IWUSR}, {'x', S_IXUSR},
++ {'r', S_IRGRP}, {'w', S_IWGRP}, {'x', S_IXGRP},
++ {'r', S_IROTH}, {'w', S_IWOTH}, {'x', S_IXOTH},
++};
++
++
++static void pushmode(lua_State *L, mode_t mode)
++{
++ char m[9];
++ int i;
++ for (i=0; i<9; i++) m[i]= (mode & M[i].b) ? M[i].c : '-';
++ if (mode & S_ISUID) m[2]= (mode & S_IXUSR) ? 's' : 'S';
++ if (mode & S_ISGID) m[5]= (mode & S_IXGRP) ? 's' : 'S';
++ lua_pushlstring(L, m, 9);
++}
++
++typedef void (*Selector)(lua_State *L, int i, const void *data);
++
++static int doselection(lua_State *L, int i, int n,
++ const char *const S[],
++ Selector F,
++ const void *data)
++{
++ if (lua_isnone(L, i) || lua_istable(L, i))
++ {
++ int j;
++ if (lua_isnone(L, i)) lua_createtable(L,0,n); else lua_settop(L, i);
++ for (j=0; S[j]!=NULL; j++)
++ {
++ lua_pushstring(L, S[j]);
++ F(L, j, data);
++ lua_settable(L, -3);
++ }
++ return 1;
++ }
++ else
++ {
++ int k,n=lua_gettop(L);
++ for (k=i; k<=n; k++)
++ {
++ int j=luaL_checkoption(L, k, NULL, S);
++ F(L, j, data);
++ lua_replace(L, k);
++ }
++ return n-i+1;
++ }
++}
++#define doselection(L,i,S,F,d) (doselection)(L,i,sizeof(S)/sizeof(*S)-1,S,F,d)
++
++static int pusherror(lua_State *L, const char *info)
++{
++ lua_pushnil(L);
++ if (info==NULL)
++ lua_pushstring(L, strerror(errno));
++ else
++ lua_pushfstring(L, "%s: %s", info, strerror(errno));
++ lua_pushinteger(L, errno);
++ return 3;
++}
++
++static int pushresult(lua_State *L, int i, const char *info)
++{
++ if (i==-1) return pusherror(L, info);
++ lua_pushinteger(L, i);
++ return 1;
++}
++
++static void badoption(lua_State *L, int i, const char *what, int option)
++{
++ luaL_argerror(L, 2,
++ lua_pushfstring(L, "unknown %s option '%c'", what, option));
++}
++
++static uid_t mygetuid(lua_State *L, int i)
++{
++ if (lua_isnone(L, i))
++ return -1;
++ else if (lua_isnumber(L, i))
++ return (uid_t) lua_tonumber(L, i);
++ else if (lua_isstring(L, i))
++ {
++ struct passwd *p=getpwnam(lua_tostring(L, i));
++ return (p==NULL) ? -1 : p->pw_uid;
++ }
++ else
++ return luaL_typerror(L, i, "string or number");
++}
++
++static gid_t mygetgid(lua_State *L, int i)
++{
++ if (lua_isnone(L, i))
++ return -1;
++ else if (lua_isnumber(L, i))
++ return (gid_t) lua_tonumber(L, i);
++ else if (lua_isstring(L, i))
++ {
++ struct group *g=getgrnam(lua_tostring(L, i));
++ return (g==NULL) ? -1 : g->gr_gid;
++ }
++ else
++ return luaL_typerror(L, i, "string or number");
++}
++
++
++static int Perrno(lua_State *L) /** errno([n]) */
++{
++ int n = luaL_optint(L, 1, errno);
++ lua_pushstring(L, strerror(n));
++ lua_pushinteger(L, n);
++ return 2;
++}
++
++
++static int Pbasename(lua_State *L) /** basename(path) */
++{
++ char b[PATH_MAX];
++ size_t len;
++ const char *path = luaL_checklstring(L, 1, &len);
++ if (len>=sizeof(b)) luaL_argerror(L, 1, "too long");
++ lua_pushstring(L, basename(strcpy(b,path)));
++ return 1;
++}
++
++
++static int Pdirname(lua_State *L) /** dirname(path) */
++{
++ char b[PATH_MAX];
++ size_t len;
++ const char *path = luaL_checklstring(L, 1, &len);
++ if (len>=sizeof(b)) luaL_argerror(L, 1, "too long");
++ lua_pushstring(L, dirname(strcpy(b,path)));
++ return 1;
++}
++
++
++static int Pdir(lua_State *L) /** dir([path]) */
++{
++ const char *path = luaL_optstring(L, 1, ".");
++ DIR *d = opendir(path);
++ if (d == NULL)
++ return pusherror(L, path);
++ else
++ {
++ int i;
++ struct dirent *entry;
++ lua_newtable(L);
++ for (i=1; (entry = readdir(d)) != NULL; i++)
++ {
++ lua_pushstring(L, entry->d_name);
++ lua_rawseti(L, -2, i);
++ }
++ closedir(d);
++ lua_pushinteger(L, i-1);
++ return 2;
++ }
++}
++
++static int Pglob(lua_State *L) /** glob(pattern) */
++{
++ const char *pattern = luaL_optstring(L, 1, "*");
++ glob_t globres;
++
++ if (glob(pattern, 0, NULL, &globres))
++ return pusherror(L, pattern);
++ else
++ {
++ int i;
++ lua_newtable(L);
++ for (i=1; i<=globres.gl_pathc; i++) {
++ lua_pushstring(L, globres.gl_pathv[i-1]);
++ lua_rawseti(L, -2, i);
++ }
++ globfree(&globres);
++ return 1;
++ }
++}
++
++static int aux_files(lua_State *L)
++{
++ DIR **p = (DIR **)lua_touserdata(L, lua_upvalueindex(1));
++ DIR *d = *p;
++ struct dirent *entry;
++ if (d == NULL) return 0;
++ entry = readdir(d);
++ if (entry == NULL)
++ {
++ closedir(d);
++ *p=NULL;
++ return 0;
++ }
++ else
++ {
++ lua_pushstring(L, entry->d_name);
++ return 1;
++ }
++}
++
++static int dir_gc (lua_State *L)
++{
++ DIR *d = *(DIR **)lua_touserdata(L, 1);
++ if (d!=NULL) closedir(d);
++ return 0;
++}
++
++static int Pfiles(lua_State *L) /** files([path]) */
++{
++ const char *path = luaL_optstring(L, 1, ".");
++ DIR **d = (DIR **)lua_newuserdata(L, sizeof(DIR *));
++ if (luaL_newmetatable(L, MYNAME " dir handle"))
++ {
++ lua_pushliteral(L, "__gc");
++ lua_pushcfunction(L, dir_gc);
++ lua_settable(L, -3);
++ }
++ lua_setmetatable(L, -2);
++ *d = opendir(path);
++ if (*d == NULL) return pusherror(L, path);
++ lua_pushcclosure(L, aux_files, 1);
++ return 1;
++}
++
++
++static int Pgetcwd(lua_State *L) /** getcwd() */
++{
++ char b[PATH_MAX];
++ if (getcwd(b, sizeof(b)) == NULL) return pusherror(L, ".");
++ lua_pushstring(L, b);
++ return 1;
++}
++
++
++static int Pmkdir(lua_State *L) /** mkdir(path) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ return pushresult(L, mkdir(path, 0777), path);
++}
++
++
++static int Pchdir(lua_State *L) /** chdir(path) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ return pushresult(L, chdir(path), path);
++}
++
++static int Prmdir(lua_State *L) /** rmdir(path) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ return pushresult(L, rmdir(path), path);
++}
++
++
++static int Punlink(lua_State *L) /** unlink(path) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ return pushresult(L, unlink(path), path);
++}
++
++static int Plink(lua_State *L) /** link(old,new,[symbolic]) */
++{
++ const char *oldpath = luaL_checkstring(L, 1);
++ const char *newpath = luaL_checkstring(L, 2);
++ return pushresult(L,
++ (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
++}
++
++
++static int Preadlink(lua_State *L) /** readlink(path) */
++{
++ char b[PATH_MAX];
++ const char *path = luaL_checkstring(L, 1);
++ int n = readlink(path, b, sizeof(b));
++ if (n==-1) return pusherror(L, path);
++ lua_pushlstring(L, b, n);
++ return 1;
++}
++
++
++static int Paccess(lua_State *L) /** access(path,[mode]) */
++{
++ int mode=F_OK;
++ const char *path=luaL_checkstring(L, 1);
++ const char *s;
++ for (s=luaL_optstring(L, 2, "f"); *s!=0 ; s++)
++ switch (*s)
++ {
++ case ' ': break;
++ case 'r': mode |= R_OK; break;
++ case 'w': mode |= W_OK; break;
++ case 'x': mode |= X_OK; break;
++ case 'f': mode |= F_OK; break;
++ default: badoption(L, 2, "mode", *s); break;
++ }
++ return pushresult(L, access(path, mode), path);
++}
++
++
++static int myfclose (lua_State *L) {
++ FILE **p = (FILE **)lua_touserdata(L, 1);
++ int rc = fclose(*p);
++ if (rc == 0) *p = NULL;
++ return pushresult(L, rc, NULL);
++}
++
++static int pushfile (lua_State *L, int id, const char *mode) {
++ FILE **f = (FILE **)lua_newuserdata(L, sizeof(FILE *));
++ *f = NULL;
++ luaL_getmetatable(L, LUA_FILEHANDLE);
++ lua_setmetatable(L, -2);
++ lua_getfield(L, LUA_REGISTRYINDEX, "POSIX_PIPEFILE");
++ if (lua_isnil(L, -1)) {
++ lua_pop(L, 1);
++ lua_newtable(L);
++ lua_pushvalue(L, -1);
++ lua_pushcfunction(L, myfclose);
++ lua_setfield(L, -2, "__close");
++ lua_setfield(L, LUA_REGISTRYINDEX, "POSIX_PIPEFILE");
++ }
++ lua_setfenv(L, -2);
++ *f = fdopen(id, mode);
++ return (*f != NULL);
++}
++
++static int Ppipe(lua_State *L) /** pipe() */
++{
++ int fd[2];
++ if (pipe(fd)==-1) return pusherror(L, NULL);
++ if (!pushfile(L, fd[0], "r") || !pushfile(L, fd[1], "w"))
++ return pusherror(L, "pipe");
++ return 2;
++}
++
++
++static int Pfileno(lua_State *L) /** fileno(filehandle) */
++{
++ FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE);
++ return pushresult(L, fileno(f), NULL);
++}
++
++
++static int Pfdopen(lua_State *L) /** fdopen(fd, mode) */
++{
++ int fd = luaL_checkint(L, 1);
++ const char *mode = luaL_checkstring(L, 2);
++ if (!pushfile(L, fd, mode))
++ return pusherror(L, "fdpoen");
++ return 1;
++}
++
++
++/* helper func for Pdup */
++static const char *filemode(int fd)
++{
++ const char *m;
++ int mode = fcntl(fd, F_GETFL);
++ if (mode < 0)
++ return NULL;
++ switch (mode & O_ACCMODE) {
++ case O_RDONLY: m = "r"; break;
++ case O_WRONLY: m = "w"; break;
++ default: m = "rw"; break;
++ }
++ return m;
++}
++
++static int Pdup(lua_State *L) /** dup(old,[new]) */
++{
++ FILE **oldf = (FILE**)luaL_checkudata(L, 1, LUA_FILEHANDLE);
++ FILE **newf = (FILE **)lua_touserdata(L, 2);
++ int fd;
++ const char *msg = "dup2";
++ fflush(*newf);
++ if (newf == NULL) {
++ fd = dup(fileno(*oldf));
++ msg = "dup";
++ } else {
++ fflush(*newf);
++ fd = dup2(fileno(*oldf), fileno(*newf));
++ }
++
++ if ((fd < 0) || !pushfile(L, fd, filemode(fd)))
++ return pusherror(L, msg);
++ return 1;
++}
++
++
++static int Pmkfifo(lua_State *L) /** mkfifo(path) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ return pushresult(L, mkfifo(path, 0777), path);
++}
++
++
++static int runexec(lua_State *L, int use_shell)
++{
++ const char *path = luaL_checkstring(L, 1);
++ int i,n=lua_gettop(L);
++ char **argv = lua_newuserdata(L,(n+1)*sizeof(char*));
++ argv[0] = (char*)path;
++ for (i=1; i<n; i++) argv[i] = (char*)luaL_checkstring(L, i+1);
++ argv[n] = NULL;
++ if (use_shell) {
++ execvp(path, argv);
++ } else {
++ execv(path, argv);
++ }
++ return pusherror(L, path);
++}
++
++
++static int Pexec(lua_State *L) /** exec(path,[args]) */
++{
++ return runexec(L, 0);
++}
++
++
++static int Pexecp(lua_State *L) /** execp(path,[args]) */
++{
++ return runexec(L, 1);
++}
++
++
++static int Pfork(lua_State *L) /** fork() */
++{
++ return pushresult(L, fork(), NULL);
++}
++
++/* from http://lua-users.org/lists/lua-l/2007-11/msg00346.html */
++static int Ppoll(lua_State *L) /** poll(filehandle, timeout) */
++{
++ struct pollfd fds;
++ FILE* file = *(FILE**)luaL_checkudata(L,1,LUA_FILEHANDLE);
++ int timeout = luaL_checkint(L,2);
++ fds.fd = fileno(file);
++ fds.events = POLLIN;
++ return pushresult(L, poll(&fds,1,timeout), NULL);
++}
++
++static int Pwait(lua_State *L) /** wait([pid]) */
++{
++ int status;
++ pid_t pid = luaL_optint(L, 1, -1);
++ pid = waitpid(pid, &status, 0);
++ if (pid == -1) return pusherror(L, NULL);
++ lua_pushinteger(L, pid);
++ if (WIFEXITED(status))
++ {
++ lua_pushliteral(L,"exited");
++ lua_pushinteger(L, WEXITSTATUS(status));
++ return 3;
++ }
++ else if (WIFSIGNALED(status))
++ {
++ lua_pushliteral(L,"killed");
++ lua_pushinteger(L, WTERMSIG(status));
++ return 3;
++ }
++ else if (WIFSTOPPED(status))
++ {
++ lua_pushliteral(L,"stopped");
++ lua_pushinteger(L, WSTOPSIG(status));
++ return 3;
++ }
++ return 1;
++}
++
++
++static int Pkill(lua_State *L) /** kill(pid,[sig]) */
++{
++ pid_t pid = luaL_checkint(L, 1);
++ int sig = luaL_optint(L, 2, SIGTERM);
++ return pushresult(L, kill(pid, sig), NULL);
++}
++
++static int Psetpid(lua_State *L) /** setpid(option,...) */
++{
++ const char *what=luaL_checkstring(L, 1);
++ switch (*what)
++ {
++ case 'U':
++ return pushresult(L, seteuid(mygetuid(L, 2)), NULL);
++ case 'u':
++ return pushresult(L, setuid(mygetuid(L, 2)), NULL);
++ case 'G':
++ return pushresult(L, setegid(mygetgid(L, 2)), NULL);
++ case 'g':
++ return pushresult(L, setgid(mygetgid(L, 2)), NULL);
++ case 's':
++ return pushresult(L, setsid(), NULL);
++ case 'p':
++ {
++ pid_t pid = luaL_checkint(L, 2);
++ pid_t pgid = luaL_checkint(L, 3);
++ return pushresult(L, setpgid(pid,pgid), NULL);
++ }
++ default:
++ badoption(L, 2, "id", *what);
++ return 0;
++ }
++}
++
++
++static int Psleep(lua_State *L) /** sleep(seconds) */
++{
++ unsigned int seconds = luaL_checkint(L, 1);
++ lua_pushinteger(L, sleep(seconds));
++ return 1;
++}
++
++
++static int Psetenv(lua_State *L) /** setenv(name,value,[over]) */
++{
++ const char *name=luaL_checkstring(L, 1);
++ const char *value=luaL_optstring(L, 2, NULL);
++ if (value==NULL)
++ {
++ unsetenv(name);
++ return pushresult(L, 0, NULL);
++ }
++ else
++ {
++ int overwrite=lua_isnoneornil(L, 3) || lua_toboolean(L, 3);
++ return pushresult(L, setenv(name,value,overwrite), NULL);
++ }
++}
++
++
++static int Pgetenv(lua_State *L) /** getenv([name]) */
++{
++ if (lua_isnone(L, 1))
++ {
++ extern char **environ;
++ char **e;
++ lua_newtable(L);
++ for (e=environ; *e!=NULL; e++)
++ {
++ char *s=*e;
++ char *eq=strchr(s, '=');
++ if (eq==NULL) /* will this ever happen? */
++ {
++ lua_pushstring(L,s);
++ lua_pushboolean(L,1);
++ }
++ else
++ {
++ lua_pushlstring(L,s,eq-s);
++ lua_pushstring(L,eq+1);
++ }
++ lua_settable(L,-3);
++ }
++ }
++ else
++ lua_pushstring(L, getenv(luaL_checkstring(L, 1)));
++ return 1;
++}
++
++static int Pumask(lua_State *L) /** umask([mode]) */
++{/* <!LR> from old lposix-5.0 version */
++ char m[10];
++ mode_t mode;
++ umask(mode=umask(0));
++ mode=(~mode)&0777;
++ if (!lua_isnone(L, 1))
++ {
++ if (mode_munch(&mode, luaL_checkstring(L, 1)))
++ {
++ lua_pushnil(L);
++ return 1;
++ }
++ mode&=0777;
++ umask(~mode);
++ }
++ modechopper(mode, m);
++ lua_pushstring(L, m);
++ return 1;
++}
++
++
++static int Pchmod(lua_State *L) /** chmod(path,mode) */
++{
++ mode_t mode;
++ struct stat s;
++ const char *path = luaL_checkstring(L, 1);
++ const char *modestr = luaL_checkstring(L, 2);
++ if (stat(path, &s)) return pusherror(L, path);
++ mode = s.st_mode;
++ if (mode_munch(&mode, modestr)) luaL_argerror(L, 2, "bad mode");
++ return pushresult(L, chmod(path, mode), path);
++}
++
++
++static int Pchown(lua_State *L) /** chown(path,uid,gid) */
++{
++ const char *path = luaL_checkstring(L, 1);
++ uid_t uid = mygetuid(L, 2);
++ gid_t gid = mygetgid(L, 3);
++ return pushresult(L, chown(path, uid, gid), path);
++}
++
++
++static int Putime(lua_State *L) /** utime(path,[mtime,atime]) */
++{
++ struct utimbuf times;
++ time_t currtime = time(NULL);
++ const char *path = luaL_checkstring(L, 1);
++ times.modtime = luaL_optnumber(L, 2, currtime);
++ times.actime = luaL_optnumber(L, 3, currtime);
++ return pushresult(L, utime(path, &times), path);
++}
++
++
++static void FgetID(lua_State *L, int i, const void *data)
++{
++ switch (i)
++ {
++ case 0: lua_pushinteger(L, getegid()); break;
++ case 1: lua_pushinteger(L, geteuid()); break;
++ case 2: lua_pushinteger(L, getgid()); break;
++ case 3: lua_pushinteger(L, getuid()); break;
++ case 4: lua_pushinteger(L, getpgrp()); break;
++ case 5: lua_pushinteger(L, getpid()); break;
++ case 6: lua_pushinteger(L, getppid()); break;
++ }
++}
++
++static const char *const SgetID[] =
++{
++ "egid", "euid", "gid", "uid", "pgrp", "pid", "ppid", NULL
++};
++
++static int Pgetpid(lua_State *L) /** getpid([options]) */
++{
++ return doselection(L, 1, SgetID, FgetID, NULL);
++}
++
++
++static int Phostid(lua_State *L) /** hostid() */
++{
++ char b[32];
++ sprintf(b,"%ld",gethostid());
++ lua_pushstring(L, b);
++ return 1;
++}
++
++
++static int Pttyname(lua_State *L) /** ttyname([fd]) */
++{
++ int fd=luaL_optint(L, 1, 0);
++ lua_pushstring(L, ttyname(fd));
++ return 1;
++}
++
++
++static int Pctermid(lua_State *L) /** ctermid() */
++{
++ char b[L_ctermid];
++ lua_pushstring(L, ctermid(b));
++ return 1;
++}
++
++
++static int Pgetlogin(lua_State *L) /** getlogin() */
++{
++ lua_pushstring(L, getlogin());
++ return 1;
++}
++
++
++static void Fgetpasswd(lua_State *L, int i, const void *data)
++{
++ const struct passwd *p=data;
++ switch (i)
++ {
++ case 0: lua_pushstring(L, p->pw_name); break;
++ case 1: lua_pushinteger(L, p->pw_uid); break;
++ case 2: lua_pushinteger(L, p->pw_gid); break;
++ case 3: lua_pushstring(L, p->pw_dir); break;
++ case 4: lua_pushstring(L, p->pw_shell); break;
++/* not strictly POSIX */
++ case 5: lua_pushstring(L, p->pw_gecos); break;
++ case 6: lua_pushstring(L, p->pw_passwd); break;
++ }
++}
++
++static const char *const Sgetpasswd[] =
++{
++ "name", "uid", "gid", "dir", "shell", "gecos", "passwd", NULL
++};
++
++
++static int Pgetpasswd(lua_State *L) /** getpasswd(name|id,[sel]) */
++{
++ struct passwd *p=NULL;
++ if (lua_isnoneornil(L, 1))
++ p = getpwuid(geteuid());
++ else if (lua_isnumber(L, 1))
++ p = getpwuid((uid_t)lua_tonumber(L, 1));
++ else if (lua_isstring(L, 1))
++ p = getpwnam(lua_tostring(L, 1));
++ else
++ luaL_typerror(L, 1, "string or number");
++ if (p==NULL)
++ lua_pushnil(L);
++ else
++ return doselection(L, 2, Sgetpasswd, Fgetpasswd, p);
++ return 1;
++}
++
++
++static int Pgetgroup(lua_State *L) /** getgroup(name|id) */
++{
++ struct group *g=NULL;
++ if (lua_isnumber(L, 1))
++ g = getgrgid((gid_t)lua_tonumber(L, 1));
++ else if (lua_isstring(L, 1))
++ g = getgrnam(lua_tostring(L, 1));
++ else
++ luaL_typerror(L, 1, "string or number");
++ if (g==NULL)
++ lua_pushnil(L);
++ else
++ {
++ int i;
++ lua_newtable(L);
++ lua_pushliteral(L, "name");
++ lua_pushstring(L, g->gr_name);
++ lua_settable(L, -3);
++ lua_pushliteral(L, "gid");
++ lua_pushinteger(L, g->gr_gid);
++ lua_settable(L, -3);
++ for (i=0; g->gr_mem[i]!=NULL; i++)
++ {
++ lua_pushstring(L, g->gr_mem[i]);
++ lua_rawseti(L, -2, i);
++ }
++ }
++ return 1;
++}
++
++
++struct mytimes
++{
++ struct tms t;
++ clock_t elapsed;
++};
++
++/* #define pushtime(L,x) lua_pushnumber(L,((lua_Number)x)/CLOCKS_PER_SEC) */
++#define pushtime(L,x) lua_pushnumber(L, ((lua_Number)x)/clk_tck)
++
++static void Ftimes(lua_State *L, int i, const void *data)
++{
++ static long clk_tck = 0;
++ const struct mytimes *t=data;
++
++ if( !clk_tck){ clk_tck= sysconf(_SC_CLK_TCK);}
++ switch (i)
++ {
++ case 0: pushtime(L, t->t.tms_utime); break;
++ case 1: pushtime(L, t->t.tms_stime); break;
++ case 2: pushtime(L, t->t.tms_cutime); break;
++ case 3: pushtime(L, t->t.tms_cstime); break;
++ case 4: pushtime(L, t->elapsed); break;
++ }
++}
++
++static const char *const Stimes[] =
++{
++ "utime", "stime", "cutime", "cstime", "elapsed", NULL
++};
++
++static int Ptimes(lua_State *L) /** times([options]) */
++{
++ struct mytimes t;
++ t.elapsed = times(&t.t);
++ return doselection(L, 1, Stimes, Ftimes, &t);
++}
++
++
++static const char *filetype(mode_t m)
++{
++ if (S_ISREG(m)) return "regular";
++ else if (S_ISLNK(m)) return "link";
++ else if (S_ISDIR(m)) return "directory";
++ else if (S_ISCHR(m)) return "character device";
++ else if (S_ISBLK(m)) return "block device";
++ else if (S_ISFIFO(m)) return "fifo";
++ else if (S_ISSOCK(m)) return "socket";
++ else return "?";
++}
++
++static void Fstat(lua_State *L, int i, const void *data)
++{
++ const struct stat *s=data;
++ switch (i)
++ {
++ case 0: pushmode(L, s->st_mode); break;
++ case 1: lua_pushinteger(L, s->st_ino); break;
++ case 2: lua_pushinteger(L, s->st_dev); break;
++ case 3: lua_pushinteger(L, s->st_nlink); break;
++ case 4: lua_pushinteger(L, s->st_uid); break;
++ case 5: lua_pushinteger(L, s->st_gid); break;
++ case 6: lua_pushinteger(L, s->st_size); break;
++ case 7: lua_pushinteger(L, s->st_atime); break;
++ case 8: lua_pushinteger(L, s->st_mtime); break;
++ case 9: lua_pushinteger(L, s->st_ctime); break;
++ case 10:lua_pushstring(L, filetype(s->st_mode)); break;
++ }
++}
++
++static const char *const Sstat[] =
++{
++ "mode", "ino", "dev", "nlink", "uid", "gid",
++ "size", "atime", "mtime", "ctime", "type",
++ NULL
++};
++
++static int Pstat(lua_State *L) /** stat(path,[options]) */
++{
++ struct stat s;
++ const char *path=luaL_checkstring(L, 1);
++ if (lstat(path,&s)==-1) return pusherror(L, path);
++ return doselection(L, 2, Sstat, Fstat, &s);
++}
++
++
++static int Puname(lua_State *L) /** uname([string]) */
++{
++ struct utsname u;
++ luaL_Buffer b;
++ const char *s;
++ if (uname(&u)==-1) return pusherror(L, NULL);
++ luaL_buffinit(L, &b);
++ for (s=luaL_optstring(L, 1, "%s %n %r %v %m"); *s; s++)
++ if (*s!='%')
++ luaL_putchar(&b, *s);
++ else switch (*++s)
++ {
++ case '%': luaL_putchar(&b, *s); break;
++ case 'm': luaL_addstring(&b,u.machine); break;
++ case 'n': luaL_addstring(&b,u.nodename); break;
++ case 'r': luaL_addstring(&b,u.release); break;
++ case 's': luaL_addstring(&b,u.sysname); break;
++ case 'v': luaL_addstring(&b,u.version); break;
++ default: badoption(L, 2, "format", *s); break;
++ }
++ luaL_pushresult(&b);
++ return 1;
++}
++
++
++static const int Kpathconf[] =
++{
++ _PC_LINK_MAX, _PC_MAX_CANON, _PC_MAX_INPUT, _PC_NAME_MAX, _PC_PATH_MAX,
++ _PC_PIPE_BUF, _PC_CHOWN_RESTRICTED, _PC_NO_TRUNC, _PC_VDISABLE,
++ -1
++};
++
++static void Fpathconf(lua_State *L, int i, const void *data)
++{
++ const char *path=data;
++ lua_pushinteger(L, pathconf(path, Kpathconf[i]));
++}
++
++static const char *const Spathconf[] =
++{
++ "link_max", "max_canon", "max_input", "name_max", "path_max",
++ "pipe_buf", "chown_restricted", "no_trunc", "vdisable",
++ NULL
++};
++
++static int Ppathconf(lua_State *L) /** pathconf([path,options]) */
++{
++ const char *path = luaL_optstring(L, 1, ".");
++ return doselection(L, 2, Spathconf, Fpathconf, path);
++}
++
++
++static const int Ksysconf[] =
++{
++ _SC_ARG_MAX, _SC_CHILD_MAX, _SC_CLK_TCK, _SC_NGROUPS_MAX, _SC_STREAM_MAX,
++ _SC_TZNAME_MAX, _SC_OPEN_MAX, _SC_JOB_CONTROL, _SC_SAVED_IDS, _SC_VERSION,
++ -1
++};
++
++static void Fsysconf(lua_State *L, int i, const void *data)
++{
++ lua_pushinteger(L, sysconf(Ksysconf[i]));
++}
++
++static const char *const Ssysconf[] =
++{
++ "arg_max", "child_max", "clk_tck", "ngroups_max", "stream_max",
++ "tzname_max", "open_max", "job_control", "saved_ids", "version",
++ NULL
++};
++
++static int Psysconf(lua_State *L) /** sysconf([options]) */
++{
++ return doselection(L, 1, Ssysconf, Fsysconf, NULL);
++}
++
++#if ENABLE_SYSLOG
++/* syslog funcs */
++static int Popenlog(lua_State *L) /** openlog(ident, [option], [facility]) */
++{
++ const char *ident = luaL_checkstring(L, 1);
++ int option = 0;
++ int facility = luaL_optint(L, 3, LOG_USER);
++ const char *s = luaL_optstring(L, 2, "");
++ while (*s) {
++ switch (*s) {
++ case ' ': break;
++ case 'c': option |= LOG_CONS; break;
++ case 'n': option |= LOG_NDELAY; break;
++ case 'e': option |= LOG_PERROR; break;
++ case 'p': option |= LOG_PID; break;
++ default: badoption(L, 2, "option", *s); break;
++ }
++ s++;
++ }
++ openlog(ident, option, facility);
++ return 0;
++}
++
++
++static int Psyslog(lua_State *L) /** syslog(priority, message) */
++{
++ int priority = luaL_checkint(L, 1);
++ const char *msg = luaL_checkstring(L, 2);
++ syslog(priority, "%s", msg);
++ return 0;
++}
++
++
++static int Pcloselog(lua_State *L) /** closelog() */
++{
++ closelog();
++ return 0;
++}
++#endif
++
++/*
++ * XXX: GNU and BSD handle the forward declaration of crypt() in different
++ * and annoying ways (especially GNU). Declare it here just to make sure
++ * that it's there
++ */
++char *crypt(const char *, const char *);
++
++static int Pcrypt(lua_State *L)
++{
++ const char *str, *salt;
++ char *res;
++
++ str = luaL_checkstring(L, 1);
++ salt = luaL_checkstring(L, 2);
++ if (strlen(salt) < 2)
++ luaL_error(L, "not enough salt");
++
++ res = crypt(str, salt);
++ lua_pushstring(L, res);
++
++ return 1;
++}
++
++static const luaL_reg R[] =
++{
++ {"access", Paccess},
++ {"basename", Pbasename},
++ {"chdir", Pchdir},
++ {"chmod", Pchmod},
++ {"chown", Pchown},
++ {"crypt", Pcrypt},
++ {"ctermid", Pctermid},
++ {"dirname", Pdirname},
++ {"dir", Pdir},
++ {"dup", Pdup},
++ {"errno", Perrno},
++ {"exec", Pexec},
++ {"execp", Pexecp},
++ {"fdopen", Pfdopen},
++ {"fileno", Pfileno},
++ {"files", Pfiles},
++ {"fork", Pfork},
++ {"getcwd", Pgetcwd},
++ {"getenv", Pgetenv},
++ {"getgroup", Pgetgroup},
++ {"getlogin", Pgetlogin},
++ {"getpasswd", Pgetpasswd},
++ {"getpid", Pgetpid},
++ {"glob", Pglob},
++ {"hostid", Phostid},
++ {"kill", Pkill},
++ {"link", Plink},
++ {"mkdir", Pmkdir},
++ {"mkfifo", Pmkfifo},
++ {"pathconf", Ppathconf},
++ {"pipe", Ppipe},
++ {"readlink", Preadlink},
++ {"rmdir", Prmdir},
++ {"rpoll", Ppoll},
++ {"setenv", Psetenv},
++ {"setpid", Psetpid},
++ {"sleep", Psleep},
++ {"stat", Pstat},
++ {"sysconf", Psysconf},
++ {"times", Ptimes},
++ {"ttyname", Pttyname},
++ {"unlink", Punlink},
++ {"umask", Pumask},
++ {"uname", Puname},
++ {"utime", Putime},
++ {"wait", Pwait},
++
++#if ENABLE_SYSLOG
++ {"openlog", Popenlog},
++ {"syslog", Psyslog},
++ {"closelog", Pcloselog},
++#endif
++
++ {NULL, NULL}
++};
++
++#define set_const(key, value) \
++ lua_pushliteral(L, key); \
++ lua_pushnumber(L, value); \
++ lua_settable(L, -3)
++
++LUALIB_API int luaopen_posix (lua_State *L)
++{
++ luaL_register(L,MYNAME,R);
++ lua_pushliteral(L,"version"); /** version */
++ lua_pushliteral(L,MYVERSION);
++ lua_settable(L,-3);
++
++#if ENABLE_SYSLOG
++ set_const("LOG_AUTH", LOG_AUTH);
++ set_const("LOG_AUTHPRIV", LOG_AUTHPRIV);
++ set_const("LOG_CRON", LOG_CRON);
++ set_const("LOG_DAEMON", LOG_DAEMON);
++ set_const("LOG_FTP", LOG_FTP);
++ set_const("LOG_KERN", LOG_KERN);
++ set_const("LOG_LOCAL0", LOG_LOCAL0);
++ set_const("LOG_LOCAL1", LOG_LOCAL1);
++ set_const("LOG_LOCAL2", LOG_LOCAL2);
++ set_const("LOG_LOCAL3", LOG_LOCAL3);
++ set_const("LOG_LOCAL4", LOG_LOCAL4);
++ set_const("LOG_LOCAL5", LOG_LOCAL5);
++ set_const("LOG_LOCAL6", LOG_LOCAL6);
++ set_const("LOG_LOCAL7", LOG_LOCAL7);
++ set_const("LOG_LPR", LOG_LPR);
++ set_const("LOG_MAIL", LOG_MAIL);
++ set_const("LOG_NEWS", LOG_NEWS);
++ set_const("LOG_SYSLOG", LOG_SYSLOG);
++ set_const("LOG_USER", LOG_USER);
++ set_const("LOG_UUCP", LOG_UUCP);
++
++ set_const("LOG_EMERG", LOG_EMERG);
++ set_const("LOG_ALERT", LOG_ALERT);
++ set_const("LOG_CRIT", LOG_CRIT);
++ set_const("LOG_ERR", LOG_ERR);
++ set_const("LOG_WARNING", LOG_WARNING);
++ set_const("LOG_NOTICE", LOG_NOTICE);
++ set_const("LOG_INFO", LOG_INFO);
++ set_const("LOG_DEBUG", LOG_DEBUG);
++#endif
++
++
++ return 1;
++}
++
++/*EOF*/
+Index: lua-5.1.4/src/lualib.h
+===================================================================
+--- lua-5.1.4.orig/src/lualib.h 2008-09-25 12:18:14.000000000 +0200
++++ lua-5.1.4/src/lualib.h 2008-09-25 12:18:53.000000000 +0200
+@@ -39,6 +39,9 @@
+ #define LUA_LOADLIBNAME "package"
+ LUALIB_API int (luaopen_package) (lua_State *L);
+
++#define LUA_POSIXLIBNAME "posix"
++LUALIB_API int (luaopen_posix) (lua_State *L);
++
+
+ /* open all previous libraries */
+ LUALIB_API void (luaL_openlibs) (lua_State *L);
+Index: lua-5.1.4/src/modemuncher.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ lua-5.1.4/src/modemuncher.c 2008-09-25 12:16:29.000000000 +0200
+@@ -0,0 +1,261 @@
++/*
++ Mode Muncher -- modemuncher.c
++ 961110 Claudio Terra
++
++ munch vb
++ [ME monchen, perh. influenced by MF mangier to eat --more at MANGER]
++ :to chew with a crunching sound: eat with relish
++ :to chew food with a crunching sound: eat food with relish
++ --munch-er n
++
++ The NeXT Digital Edition of Webster's Ninth New Collegiate Dictionary
++ and Webster's Collegiate Thesaurus
++*/
++
++/* struct for rwx <-> POSIX constant lookup tables */
++struct modeLookup
++{
++ char rwx;
++ mode_t bits;
++};
++
++typedef struct modeLookup modeLookup;
++
++static modeLookup modesel[] =
++{
++ /* RWX char Posix Constant */
++ {'r', S_IRUSR},
++ {'w', S_IWUSR},
++ {'x', S_IXUSR},
++
++ {'r', S_IRGRP},
++ {'w', S_IWGRP},
++ {'x', S_IXGRP},
++
++ {'r', S_IROTH},
++ {'w', S_IWOTH},
++ {'x', S_IXOTH},
++ {0, (mode_t)-1} /* do not delete this line */
++};
++
++
++
++static int rwxrwxrwx(mode_t *mode, const char *p)
++{
++ int count;
++ mode_t tmp_mode = *mode;
++
++ tmp_mode &= ~(S_ISUID | S_ISGID); /* turn off suid and sgid flags */
++ for (count=0; count<9; count ++)
++ {
++ if (*p == modesel[count].rwx) tmp_mode |= modesel[count].bits; /* set a bit */
++ else if (*p == '-') tmp_mode &= ~modesel[count].bits; /* clear a bit */
++ else if (*p=='s') switch(count)
++ {
++ case 2: /* turn on suid flag */
++ tmp_mode |= S_ISUID | S_IXUSR;
++ break;
++
++ case 5: /* turn on sgid flag */
++ tmp_mode |= S_ISGID | S_IXGRP;
++ break;
++
++ default:
++ return -4; /* failed! -- bad rwxrwxrwx mode change */
++ break;
++ }
++ p++;
++ }
++ *mode = tmp_mode;
++ return 0;
++}
++
++static void modechopper(mode_t mode, char *p)
++{
++ /* requires char p[10] */
++ int count;
++ char *pp;
++
++ pp=p;
++
++ for (count=0; count<9; count ++)
++ {
++ if (mode & modesel[count].bits) *p = modesel[count].rwx;
++ else *p='-';
++
++ p++;
++ }
++ *p=0; /* to finish the string */
++
++ /* dealing with suid and sgid flags */
++ if (mode & S_ISUID) pp[2] = (mode & S_IXUSR) ? 's' : 'S';
++ if (mode & S_ISGID) pp[5] = (mode & S_IXGRP) ? 's' : 'S';
++
++}
++
++static int mode_munch(mode_t *mode, const char* p)
++{
++
++ char op=0;
++ mode_t affected_bits, ch_mode;
++ int doneFlag = 0;
++#ifdef DEBUG
++char tmp[10];
++#endif
++
++#ifdef DEBUG
++modechopper(*mode, tmp);
++printf("modemuncher: got base mode = %s\n", tmp);
++#endif
++
++ while (!doneFlag)
++ {
++ /* step 0 -- clear temporary variables */
++ affected_bits=0;
++ ch_mode=0;
++
++ /* step 1 -- who's affected? */
++
++#ifdef DEBUG
++printf("modemuncher step 1\n");
++#endif
++
++ /* mode string given in rwxrwxrwx format */
++ if (*p== 'r' || *p == '-') return rwxrwxrwx(mode, p);
++
++ /* mode string given in ugoa+-=rwx format */
++ for ( ; ; p++)
++ switch (*p)
++ {
++ case 'u':
++ affected_bits |= 04700;
++ break;
++
++ case 'g':
++ affected_bits |= 02070;
++ break;
++
++ case 'o':
++ affected_bits |= 01007;
++ break;
++
++ case 'a':
++ affected_bits |= 07777;
++ break;
++
++ /* ignore spaces */
++ case ' ':
++ break;
++
++
++ default:
++ goto no_more_affected;
++ }
++
++ no_more_affected:
++ /* If none specified, affect all bits. */
++ if (affected_bits == 0) affected_bits = 07777;
++
++ /* step 2 -- how is it changed? */
++
++#ifdef DEBUG
++printf("modemuncher step 2 (*p='%c')\n", *p);
++#endif
++
++ switch (*p)
++ {
++ case '+':
++ case '-':
++ case '=':
++ op = *p;
++ break;
++
++ /* ignore spaces */
++ case ' ':
++ break;
++
++ default:
++ return -1; /* failed! -- bad operator */
++ }
++
++
++ /* step 3 -- what are the changes? */
++
++#ifdef DEBUG
++printf("modemuncher step 3\n");
++#endif
++
++ for (p++ ; *p!=0 ; p++)
++ switch (*p)
++ {
++ case 'r':
++ ch_mode |= 00444;
++ break;
++
++ case 'w':
++ ch_mode |= 00222;
++ break;
++
++ case 'x':
++ ch_mode |= 00111;
++ break;
++
++ case 's':
++ /* Set the setuid/gid bits if `u' or `g' is selected. */
++ ch_mode |= 06000;
++ break;
++
++ /* ignore spaces */
++ case ' ':
++ break;
++
++ default:
++ goto specs_done;
++ }
++
++ specs_done:
++ /* step 4 -- apply the changes */
++
++#ifdef DEBUG
++ printf("modemuncher step 4\n");
++#endif
++ if (*p != ',') doneFlag = 1;
++ if (*p != 0 && *p != ' ' && *p != ',')
++ {
++
++#ifdef DEBUG
++printf("modemuncher: comma error!\n");
++printf("modemuncher: doneflag = %u\n", doneFlag);
++#endif
++ return -2; /* failed! -- bad mode change */
++
++ }
++ p++;
++ /*if (!ch_mode) return -2;*/ /* failed! -- bad mode change */
++ if (ch_mode) switch (op)
++ {
++ case '+':
++ *mode = *mode |= ch_mode & affected_bits;
++ break;
++
++ case '-':
++ *mode = *mode &= ~(ch_mode & affected_bits);
++ break;
++
++ case '=':
++ *mode = ch_mode & affected_bits;
++ break;
++
++ default:
++ return -3; /* failed! -- unknown error */
++ }
++ }
++#ifdef DEBUG
++modechopper(*mode, tmp);
++printf("modemuncher: returning mode = %s\n", tmp);
++#endif
++
++ return 0; /* successful call */
++}
++
++
diff --git a/package/lua/patches/410-bitlib_25-embedded.patch b/package/lua/patches/410-bitlib_25-embedded.patch
new file mode 100644
index 0000000000..91de0647f5
--- /dev/null
+++ b/package/lua/patches/410-bitlib_25-embedded.patch
@@ -0,0 +1,186 @@
+Index: lua-5.1.4/src/Makefile
+===================================================================
+--- lua-5.1.4.orig/src/Makefile 2008-09-25 13:08:31.000000000 +0200
++++ lua-5.1.4/src/Makefile 2008-09-25 13:08:43.000000000 +0200
+@@ -29,7 +29,7 @@
+ lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \
+ lundump.o lvm.o lzio.o lnum.o
+ LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
+- lstrlib.o loadlib.o linit.o lposix.o
++ lstrlib.o loadlib.o linit.o lposix.o lbitlib.o
+
+ LUA_T= lua
+ LUA_O= lua.o
+Index: lua-5.1.4/src/bit_limits.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ lua-5.1.4/src/bit_limits.h 2008-09-25 13:09:16.000000000 +0200
+@@ -0,0 +1,4 @@
++#define BITLIB_FLOAT_BITS 53
++#define BITLIB_FLOAT_MAX 0xfffffffffffffL
++#define BITLIB_FLOAT_MIN (-0x10000000000000L)
++#define BITLIB_FLOAT_UMAX 0x1fffffffffffffUL
+Index: lua-5.1.4/src/lbitlib.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ lua-5.1.4/src/lbitlib.c 2008-09-25 13:05:15.000000000 +0200
+@@ -0,0 +1,133 @@
++/* Bitwise operations library */
++/* (c) Reuben Thomas 2000-2008 */
++/* See README for license */
++
++#include "lua.h"
++#include "lauxlib.h"
++#include "limits.h"
++
++#include "bit_limits.h"
++
++
++/* FIXME: Assume lua_Integer is int */
++#define LUA_INTEGER_MAX INT_MAX
++#define LUA_INTEGER_MIN INT_MIN
++
++/* FIXME: Assume uint is an unsigned lua_Integer */
++typedef unsigned int lua_UInteger;
++#define LUA_UINTEGER_MAX UINT_MAX
++
++
++/* Bit type size and limits */
++
++#define BIT_BITS \
++ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? \
++ BITLIB_FLOAT_BITS : (CHAR_BIT * sizeof(lua_Integer)))
++
++/* This code may give warnings if BITLIB_FLOAT_* are too big to fit in
++ long, but that doesn't matter since in that case they won't be
++ used. */
++#define BIT_MAX \
++ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MAX : LUA_INTEGER_MAX)
++
++#define BIT_MIN \
++ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MIN : LUA_INTEGER_MIN)
++
++#define BIT_UMAX \
++ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_UMAX : LUA_UINTEGER_MAX)
++
++
++/* Define TOBIT to get a bit value */
++#ifdef BUILTIN_CAST
++#define
++#define TOBIT(L, n, res) \
++ ((void)(res), luaL_checkinteger((L), (n)))
++#else
++#include <stdint.h>
++#include <math.h>
++
++/* FIXME: Assume lua_Number fits in a double (use of fmod). */
++#define TOBIT(L, n, res) \
++ ((lua_Integer)(((res) = fmod(luaL_checknumber(L, (n)), (double)BIT_UMAX + 1.0)), \
++ (res) > BIT_MAX ? ((res) -= (double)BIT_UMAX, (res) -= 1) : \
++ ((res) < BIT_MIN ? ((res) += (double)BIT_UMAX, (res) += 1) : (res))))
++#endif
++
++
++#define BIT_TRUNCATE(i) \
++ ((i) & BIT_UMAX)
++
++
++/* Operations
++
++ The macros MONADIC and VARIADIC only deal with bitwise operations.
++
++ LOGICAL_SHIFT truncates its left-hand operand before shifting so
++ that any extra bits at the most-significant end are not shifted
++ into the result.
++
++ ARITHMETIC_SHIFT does not truncate its left-hand operand, so that
++ the sign bits are not removed and right shift work properly.
++ */
++
++#define MONADIC(name, op) \
++ static int bit_ ## name(lua_State *L) { \
++ lua_Number f; \
++ lua_pushinteger(L, BIT_TRUNCATE(op TOBIT(L, 1, f))); \
++ return 1; \
++ }
++
++#define VARIADIC(name, op) \
++ static int bit_ ## name(lua_State *L) { \
++ lua_Number f; \
++ int n = lua_gettop(L), i; \
++ lua_Integer w = TOBIT(L, 1, f); \
++ for (i = 2; i <= n; i++) \
++ w op TOBIT(L, i, f); \
++ lua_pushinteger(L, BIT_TRUNCATE(w)); \
++ return 1; \
++ }
++
++#define LOGICAL_SHIFT(name, op) \
++ static int bit_ ## name(lua_State *L) { \
++ lua_Number f; \
++ lua_pushinteger(L, BIT_TRUNCATE(BIT_TRUNCATE((lua_UInteger)TOBIT(L, 1, f)) op \
++ (unsigned)luaL_checknumber(L, 2))); \
++ return 1; \
++ }
++
++#define ARITHMETIC_SHIFT(name, op) \
++ static int bit_ ## name(lua_State *L) { \
++ lua_Number f; \
++ lua_pushinteger(L, BIT_TRUNCATE((lua_Integer)TOBIT(L, 1, f) op \
++ (unsigned)luaL_checknumber(L, 2))); \
++ return 1; \
++ }
++
++MONADIC(cast, +)
++MONADIC(bnot, ~)
++VARIADIC(band, &=)
++VARIADIC(bor, |=)
++VARIADIC(bxor, ^=)
++ARITHMETIC_SHIFT(lshift, <<)
++LOGICAL_SHIFT(rshift, >>)
++ARITHMETIC_SHIFT(arshift, >>)
++
++static const struct luaL_reg bitlib[] = {
++ {"cast", bit_cast},
++ {"bnot", bit_bnot},
++ {"band", bit_band},
++ {"bor", bit_bor},
++ {"bxor", bit_bxor},
++ {"lshift", bit_lshift},
++ {"rshift", bit_rshift},
++ {"arshift", bit_arshift},
++ {NULL, NULL}
++};
++
++LUALIB_API int luaopen_bit (lua_State *L) {
++ luaL_register(L, "bit", bitlib);
++ lua_pushnumber(L, BIT_BITS);
++ lua_setfield(L, -2, "bits");
++ return 1;
++}
+Index: lua-5.1.4/src/linit.c
+===================================================================
+--- lua-5.1.4.orig/src/linit.c 2008-09-25 13:08:11.000000000 +0200
++++ lua-5.1.4/src/linit.c 2008-09-25 13:08:27.000000000 +0200
+@@ -24,6 +24,7 @@
+ {LUA_MATHLIBNAME, luaopen_math},
+ {LUA_DBLIBNAME, luaopen_debug},
+ {LUA_POSIXLIBNAME, luaopen_posix},
++ {LUA_BITLIBNAME, luaopen_bit},
+ {NULL, NULL}
+ };
+
+Index: lua-5.1.4/src/lualib.h
+===================================================================
+--- lua-5.1.4.orig/src/lualib.h 2008-09-25 13:07:29.000000000 +0200
++++ lua-5.1.4/src/lualib.h 2008-09-25 13:08:06.000000000 +0200
+@@ -42,6 +42,9 @@
+ #define LUA_POSIXLIBNAME "posix"
+ LUALIB_API int (luaopen_posix) (lua_State *L);
+
++#define LUA_BITLIBNAME "bit"
++LUALIB_API int (luaopen_bit) (lua_State *L);
++
+
+ /* open all previous libraries */
+ LUALIB_API void (luaL_openlibs) (lua_State *L);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 15:16:36 +0000