static int
fsdirstat(char *path, int dev, Dir *d)
{
int fd;
struct stat st;
if(stat(path, &st) < 0 && lstat(path, &st) < 0)
return -1;
d->name = lastelem(path);
d->uid = uidtoname(st.st_uid);
d->gid = gidtoname(st.st_gid);
d->muid = "";
d->qid = fsqid(&st);
d->mode = (d->qid.type<<24) | (st.st_mode&0777);
d->atime = st.st_atime;
d->mtime = st.st_mtime;
d->length = st.st_size;
if(S_ISBLK(st.st_mode) && (fd = open(path, O_RDONLY)) >= 0){
d->length = disksize(fd, &st);
close(fd);
}
// devmnt leaves 1-9 unused so that we can steal them.
// it is easier for all involved if #Z shows M as the file type instead of Z.
// dev is c->dev, either 1 (#Z) or 2 (#Zplan9).
d->type = 'M';
d->dev = dev;
return 0;
}
static int
fsstat(Chan *c, uchar *buf, int n)
{
Dir d;
Ufsinfo *uif;
if(n < BIT16SZ)
error(Eshortstat);
uif = c->aux;
d.name = lastelem(c);
wfdtodir(uif->path, &d, nil);
d.type = 'U';
d.dev = c->dev;
return convD2M(&d, buf, n);
}
static int
fswstat(Chan *c, uchar *buf, int n)
{
char *elem, *path, *npath, *strs, *t;
int nn;
Dir d;
UnixFd *ufd;
if(n < 2)
error(Ebadstat);
nn = GBIT16((uchar*)buf);
strs = smalloc(nn);
if(convM2D(buf, n, &d, strs) != n){
free(strs);
error(Ebadstat);
}
path = fspath(c, nil);
if(waserror()){
free(path);
free(strs);
nexterror();
}
if(d.muid[0])
error("cannot change muid");
if(d.uid[0] || d.gid[0]){
int uid, gid;
uid = -1;
gid = -1;
if(d.uid[0] && (uid = nametouid(d.uid)) < 0)
error("unknown uid");
if(d.gid[0] && (gid = nametogid(d.gid)) < 0)
error("unknown gid");
if(chown(path, uid, gid) < 0)
oserror();
}
ufd = c->aux;
elem = lastelem(path);
if(d.name[0] && strcmp(d.name, elem) != 0){
if(strchr(d.name, '/'))
error(Ebadarg);
npath = smalloc(strlen(path)+strlen(d.name)+1);
strcpy(npath, path);
t = strrchr(npath, '/');
strcpy(t+1, d.name);
if(rename(path, npath) < 0){
free(npath);
oserror();
}
free(npath);
}
if(~d.mode != 0 && chmod(path, d.mode&0777) < 0)
oserror();
// TODO: Code to change uid, gid.
poperror();
return n;
}
// install installs the library, package, or binary associated with dir,
// which is relative to $GOROOT/src.
static void
install(char *dir)
{
char *name, *p, *elem, *prefix, *exe;
bool islib, ispkg, isgo, stale, ispackcmd;
Buf b, b1, path;
Vec compile, files, link, go, missing, clean, lib, extra;
Time ttarg, t;
int i, j, k, n, doclean, targ;
if(vflag) {
if(!streq(goos, gohostos) || !streq(goarch, gohostarch))
errprintf("%s (%s/%s)\n", dir, goos, goarch);
else
errprintf("%s\n", dir);
}
binit(&b);
binit(&b1);
binit(&path);
vinit(&compile);
vinit(&files);
vinit(&link);
vinit(&go);
vinit(&missing);
vinit(&clean);
vinit(&lib);
vinit(&extra);
// path = full path to dir.
bpathf(&path, "%s/src/%s", goroot, dir);
name = lastelem(dir);
// For misc/prof, copy into the tool directory and we're done.
if(hasprefix(dir, "misc/")) {
copy(bpathf(&b, "%s/%s", tooldir, name),
bpathf(&b1, "%s/misc/%s", goroot, name), 1);
goto out;
}
// For release, cmd/prof is not included.
if((streq(dir, "cmd/prof")) && !isdir(bstr(&path))) {
if(vflag > 1)
errprintf("skipping %s - does not exist\n", dir);
goto out;
}
// set up gcc command line on first run.
if(gccargs.len == 0) {
bprintf(&b, "%s %s", defaultcc, defaultcflags);
splitfields(&gccargs, bstr(&b));
for(i=0; i<nelem(proto_gccargs); i++)
vadd(&gccargs, proto_gccargs[i]);
if(defaultcflags[0] == '\0') {
for(i=0; i<nelem(proto_gccargs2); i++)
vadd(&gccargs, proto_gccargs2[i]);
}
if(contains(gccargs.p[0], "clang")) {
// disable ASCII art in clang errors, if possible
vadd(&gccargs, "-fno-caret-diagnostics");
// clang is too smart about unused command-line arguments
vadd(&gccargs, "-Qunused-arguments");
}
// disable word wrapping in error messages
vadd(&gccargs, "-fmessage-length=0");
if(streq(gohostos, "darwin")) {
// golang.org/issue/5261
vadd(&gccargs, "-mmacosx-version-min=10.6");
}
}
if(ldargs.len == 0 && defaultldflags[0] != '\0') {
bprintf(&b, "%s", defaultldflags);
splitfields(&ldargs, bstr(&b));
}
islib = hasprefix(dir, "lib") || streq(dir, "cmd/cc") || streq(dir, "cmd/gc");
ispkg = hasprefix(dir, "pkg");
isgo = ispkg || streq(dir, "cmd/go") || streq(dir, "cmd/cgo");
exe = "";
if(streq(gohostos, "windows"))
exe = ".exe";
// Start final link command line.
// Note: code below knows that link.p[targ] is the target.
ispackcmd = 0;
if(islib) {
// C library.
vadd(&link, "ar");
if(streq(gohostos, "plan9"))
vadd(&link, "rc");
else
vadd(&link, "rsc");
prefix = "";
if(!hasprefix(name, "lib"))
prefix = "lib";
targ = link.len;
vadd(&link, bpathf(&b, "%s/pkg/obj/%s_%s/%s%s.a", goroot, gohostos, gohostarch, prefix, name));
} else if(ispkg) {
// Go library (package).
ispackcmd = 1;
vadd(&link, "pack"); // program name - unused here, but all the other cases record one
p = bprintf(&b, "%s/pkg/%s_%s/%s", goroot, goos, goarch, dir+4);
*xstrrchr(p, '/') = '\0';
xmkdirall(p);
targ = link.len;
vadd(&link, bpathf(&b, "%s/pkg/%s_%s/%s.a", goroot, goos, goarch, dir+4));
} else if(streq(dir, "cmd/go") || streq(dir, "cmd/cgo")) {
// Go command.
vadd(&link, bpathf(&b, "%s/%sl", tooldir, gochar));
vadd(&link, "-o");
elem = name;
if(streq(elem, "go"))
elem = "go_bootstrap";
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s%s", tooldir, elem, exe));
} else {
// C command. Use gccargs and ldargs.
if(streq(gohostos, "plan9")) {
vadd(&link, bprintf(&b, "%sl", gohostchar));
vadd(&link, "-o");
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s", tooldir, name));
} else {
vcopy(&link, gccargs.p, gccargs.len);
vcopy(&link, ldargs.p, ldargs.len);
if(sflag)
vadd(&link, "-static");
vadd(&link, "-o");
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s%s", tooldir, name, exe));
if(streq(gohostarch, "amd64"))
vadd(&link, "-m64");
else if(streq(gohostarch, "386"))
vadd(&link, "-m32");
}
}
ttarg = mtime(link.p[targ]);
// Gather files that are sources for this target.
// Everything in that directory, and any target-specific
// additions.
xreaddir(&files, bstr(&path));
// Remove files beginning with . or _,
// which are likely to be editor temporary files.
// This is the same heuristic build.ScanDir uses.
// There do exist real C files beginning with _,
// so limit that check to just Go files.
n = 0;
for(i=0; i<files.len; i++) {
p = files.p[i];
if(hasprefix(p, ".") || (hasprefix(p, "_") && hassuffix(p, ".go")))
xfree(p);
else
files.p[n++] = p;
}
files.len = n;
for(i=0; i<nelem(deptab); i++) {
if(streq(dir, deptab[i].prefix) ||
(hassuffix(deptab[i].prefix, "/") && hasprefix(dir, deptab[i].prefix))) {
for(j=0; (p=deptab[i].dep[j])!=nil; j++) {
breset(&b1);
bwritestr(&b1, p);
bsubst(&b1, "$GOROOT", goroot);
bsubst(&b1, "$GOOS", goos);
bsubst(&b1, "$GOARCH", goarch);
p = bstr(&b1);
if(hassuffix(p, ".a")) {
vadd(&lib, bpathf(&b, "%s", p));
continue;
}
if(hassuffix(p, "/*")) {
bpathf(&b, "%s/%s", bstr(&path), p);
b.len -= 2;
xreaddir(&extra, bstr(&b));
bprintf(&b, "%s", p);
b.len -= 2;
for(k=0; k<extra.len; k++)
vadd(&files, bpathf(&b1, "%s/%s", bstr(&b), extra.p[k]));
continue;
}
if(hasprefix(p, "-")) {
p++;
n = 0;
for(k=0; k<files.len; k++) {
if(hasprefix(files.p[k], p))
xfree(files.p[k]);
else
files.p[n++] = files.p[k];
}
files.len = n;
continue;
}
vadd(&files, p);
}
}
}
vuniq(&files);
// Convert to absolute paths.
for(i=0; i<files.len; i++) {
if(!isabs(files.p[i])) {
bpathf(&b, "%s/%s", bstr(&path), files.p[i]);
xfree(files.p[i]);
files.p[i] = btake(&b);
}
}
// Is the target up-to-date?
stale = rebuildall;
n = 0;
for(i=0; i<files.len; i++) {
p = files.p[i];
for(j=0; j<nelem(depsuffix); j++)
if(hassuffix(p, depsuffix[j]))
goto ok;
xfree(files.p[i]);
continue;
ok:
t = mtime(p);
if(t != 0 && !hassuffix(p, ".a") && !shouldbuild(p, dir)) {
xfree(files.p[i]);
continue;
}
if(hassuffix(p, ".go"))
vadd(&go, p);
if(t > ttarg)
stale = 1;
if(t == 0) {
vadd(&missing, p);
files.p[n++] = files.p[i];
continue;
}
files.p[n++] = files.p[i];
}
files.len = n;
// If there are no files to compile, we're done.
if(files.len == 0)
goto out;
for(i=0; i<lib.len && !stale; i++)
if(mtime(lib.p[i]) > ttarg)
stale = 1;
if(!stale)
goto out;
// For package runtime, copy some files into the work space.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/arch_GOARCH.h", workdir),
bpathf(&b1, "%s/arch_%s.h", bstr(&path), goarch), 0);
copy(bpathf(&b, "%s/defs_GOOS_GOARCH.h", workdir),
bpathf(&b1, "%s/defs_%s_%s.h", bstr(&path), goos, goarch), 0);
p = bpathf(&b1, "%s/signal_%s_%s.h", bstr(&path), goos, goarch);
if(isfile(p))
copy(bpathf(&b, "%s/signal_GOOS_GOARCH.h", workdir), p, 0);
copy(bpathf(&b, "%s/os_GOOS.h", workdir),
bpathf(&b1, "%s/os_%s.h", bstr(&path), goos), 0);
copy(bpathf(&b, "%s/signals_GOOS.h", workdir),
bpathf(&b1, "%s/signals_%s.h", bstr(&path), goos), 0);
}
// Generate any missing files; regenerate existing ones.
for(i=0; i<files.len; i++) {
p = files.p[i];
elem = lastelem(p);
for(j=0; j<nelem(gentab); j++) {
if(gentab[j].gen == nil)
continue;
if(hasprefix(elem, gentab[j].nameprefix)) {
if(vflag > 1)
errprintf("generate %s\n", p);
gentab[j].gen(bstr(&path), p);
// Do not add generated file to clean list.
// In pkg/runtime, we want to be able to
// build the package with the go tool,
// and it assumes these generated files already
// exist (it does not know how to build them).
// The 'clean' command can remove
// the generated files.
goto built;
}
}
// Did not rebuild p.
if(find(p, missing.p, missing.len) >= 0)
fatal("missing file %s", p);
built:;
}
// One more copy for package runtime.
// The last batch was required for the generators.
// This one is generated.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/zasm_GOOS_GOARCH.h", workdir),
bpathf(&b1, "%s/zasm_%s_%s.h", bstr(&path), goos, goarch), 0);
}
// Generate .c files from .goc files.
if(streq(dir, "pkg/runtime")) {
for(i=0; i<files.len; i++) {
p = files.p[i];
if(!hassuffix(p, ".goc"))
continue;
// b = path/zp but with _goos_goarch.c instead of .goc
bprintf(&b, "%s%sz%s", bstr(&path), slash, lastelem(p));
b.len -= 4;
bwritef(&b, "_%s_%s.c", goos, goarch);
goc2c(p, bstr(&b));
vadd(&files, bstr(&b));
}
vuniq(&files);
}
if((!streq(goos, gohostos) || !streq(goarch, gohostarch)) && isgo) {
// We've generated the right files; the go command can do the build.
if(vflag > 1)
errprintf("skip build for cross-compile %s\n", dir);
goto nobuild;
}
// Compile the files.
for(i=0; i<files.len; i++) {
if(!hassuffix(files.p[i], ".c") && !hassuffix(files.p[i], ".s"))
continue;
name = lastelem(files.p[i]);
vreset(&compile);
if(!isgo) {
// C library or tool.
if(streq(gohostos, "plan9")) {
vadd(&compile, bprintf(&b, "%sc", gohostchar));
vadd(&compile, "-FTVwp");
vadd(&compile, "-DPLAN9");
vadd(&compile, "-D__STDC__=1");
vadd(&compile, "-D__SIZE_TYPE__=ulong"); // for GNU Bison
vadd(&compile, bpathf(&b, "-I%s/include/plan9", goroot));
vadd(&compile, bpathf(&b, "-I%s/include/plan9/%s", goroot, gohostarch));
} else {
vcopy(&compile, gccargs.p, gccargs.len);
vadd(&compile, "-c");
if(streq(gohostarch, "amd64"))
vadd(&compile, "-m64");
else if(streq(gohostarch, "386"))
vadd(&compile, "-m32");
vadd(&compile, "-I");
vadd(&compile, bpathf(&b, "%s/include", goroot));
}
if(streq(dir, "lib9"))
vadd(&compile, "-DPLAN9PORT");
vadd(&compile, "-I");
vadd(&compile, bstr(&path));
// lib9/goos.c gets the default constants hard-coded.
if(streq(name, "goos.c")) {
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS=\"%s\"", goos));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARCH=\"%s\"", goarch));
bprintf(&b1, "%s", goroot_final);
bsubst(&b1, "\\", "\\\\"); // turn into C string
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOROOT=\"%s\"", bstr(&b1)));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOVERSION=\"%s\"", goversion));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARM=\"%s\"", goarm));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GO386=\"%s\"", go386));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GO_EXTLINK_ENABLED=\"%s\"", goextlinkenabled));
}
// gc/lex.c records the GOEXPERIMENT setting used during the build.
if(streq(name, "lex.c")) {
xgetenv(&b, "GOEXPERIMENT");
vadd(&compile, "-D");
vadd(&compile, bprintf(&b1, "GOEXPERIMENT=\"%s\"", bstr(&b)));
}
} else {
// Supporting files for a Go package.
if(hassuffix(files.p[i], ".s"))
vadd(&compile, bpathf(&b, "%s/%sa", tooldir, gochar));
else {
vadd(&compile, bpathf(&b, "%s/%sc", tooldir, gochar));
vadd(&compile, "-F");
vadd(&compile, "-V");
vadd(&compile, "-w");
}
vadd(&compile, "-I");
vadd(&compile, workdir);
vadd(&compile, "-I");
vadd(&compile, bprintf(&b, "%s/pkg/%s_%s", goroot, goos, goarch));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS_%s", goos));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARCH_%s", goarch));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS_GOARCH_%s_%s", goos, goarch));
}
bpathf(&b, "%s/%s", workdir, lastelem(files.p[i]));
doclean = 1;
if(!isgo && streq(gohostos, "darwin")) {
// To debug C programs on OS X, it is not enough to say -ggdb
// on the command line. You have to leave the object files
// lying around too. Leave them in pkg/obj/, which does not
// get removed when this tool exits.
bpathf(&b1, "%s/pkg/obj/%s", goroot, dir);
xmkdirall(bstr(&b1));
bpathf(&b, "%s/%s", bstr(&b1), lastelem(files.p[i]));
doclean = 0;
}
// Change the last character of the output file (which was c or s).
if(streq(gohostos, "plan9"))
b.p[b.len-1] = gohostchar[0];
else
b.p[b.len-1] = 'o';
vadd(&compile, "-o");
vadd(&compile, bstr(&b));
vadd(&compile, files.p[i]);
bgrunv(bstr(&path), CheckExit, &compile);
vadd(&link, bstr(&b));
if(doclean)
vadd(&clean, bstr(&b));
}
bgwait();
if(isgo) {
// The last loop was compiling individual files.
// Hand the Go files to the compiler en masse.
vreset(&compile);
vadd(&compile, bpathf(&b, "%s/%sg", tooldir, gochar));
bpathf(&b, "%s/_go_.a", workdir);
vadd(&compile, "-pack");
vadd(&compile, "-o");
vadd(&compile, bstr(&b));
vadd(&clean, bstr(&b));
if(!ispackcmd)
vadd(&link, bstr(&b));
vadd(&compile, "-p");
if(hasprefix(dir, "pkg/"))
vadd(&compile, dir+4);
else
vadd(&compile, "main");
if(streq(dir, "pkg/runtime"))
vadd(&compile, "-+");
vcopy(&compile, go.p, go.len);
runv(nil, bstr(&path), CheckExit, &compile);
if(ispackcmd) {
xremove(link.p[targ]);
dopack(link.p[targ], bstr(&b), &link.p[targ+1], link.len - (targ+1));
goto nobuild;
}
}
if(!islib && !isgo) {
// C binaries need the libraries explicitly, and -lm.
vcopy(&link, lib.p, lib.len);
if(!streq(gohostos, "plan9"))
vadd(&link, "-lm");
}
// Remove target before writing it.
xremove(link.p[targ]);
runv(nil, nil, CheckExit, &link);
nobuild:
// In package runtime, we install runtime.h and cgocall.h too,
// for use by cgo compilation.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/pkg/%s_%s/cgocall.h", goroot, goos, goarch),
bpathf(&b1, "%s/src/pkg/runtime/cgocall.h", goroot), 0);
copy(bpathf(&b, "%s/pkg/%s_%s/runtime.h", goroot, goos, goarch),
bpathf(&b1, "%s/src/pkg/runtime/runtime.h", goroot), 0);
}
out:
for(i=0; i<clean.len; i++)
xremove(clean.p[i]);
bfree(&b);
bfree(&b1);
bfree(&path);
vfree(&compile);
vfree(&files);
vfree(&link);
vfree(&go);
vfree(&missing);
vfree(&clean);
vfree(&lib);
vfree(&extra);
}
// shouldbuild reports whether we should build this file.
// It applies the same rules that are used with context tags
// in package go/build, except that the GOOS and GOARCH
// can appear anywhere in the file name, not just after _.
// In particular, they can be the entire file name (like windows.c).
// We also allow the special tag cmd_go_bootstrap.
// See ../go/bootstrap.go and package go/build.
static bool
shouldbuild(char *file, char *dir)
{
char *name, *p;
int i, j, ret;
Buf b;
Vec lines, fields;
// Check file name for GOOS or GOARCH.
name = lastelem(file);
for(i=0; i<nelem(okgoos); i++)
if(contains(name, okgoos[i]) && !streq(okgoos[i], goos))
return 0;
for(i=0; i<nelem(okgoarch); i++)
if(contains(name, okgoarch[i]) && !streq(okgoarch[i], goarch))
return 0;
// Omit test files.
if(contains(name, "_test"))
return 0;
// cmd/go/doc.go has a giant /* */ comment before
// it gets to the important detail that it is not part of
// package main. We don't parse those comments,
// so special case that file.
if(hassuffix(file, "cmd/go/doc.go") || hassuffix(file, "cmd\\go\\doc.go"))
return 0;
if(hassuffix(file, "cmd/cgo/doc.go") || hassuffix(file, "cmd\\cgo\\doc.go"))
return 0;
// Check file contents for // +build lines.
binit(&b);
vinit(&lines);
vinit(&fields);
ret = 1;
readfile(&b, file);
splitlines(&lines, bstr(&b));
for(i=0; i<lines.len; i++) {
p = lines.p[i];
while(*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
p++;
if(*p == '\0')
continue;
if(contains(p, "package documentation")) {
ret = 0;
goto out;
}
if(contains(p, "package main") && !streq(dir, "cmd/go") && !streq(dir, "cmd/cgo")) {
ret = 0;
goto out;
}
if(!hasprefix(p, "//"))
break;
if(!contains(p, "+build"))
continue;
splitfields(&fields, lines.p[i]);
if(fields.len < 2 || !streq(fields.p[1], "+build"))
continue;
for(j=2; j<fields.len; j++) {
p = fields.p[j];
if((*p == '!' && !matchfield(p+1)) || matchfield(p))
goto fieldmatch;
}
ret = 0;
goto out;
fieldmatch:;
}
out:
bfree(&b);
vfree(&lines);
vfree(&fields);
return ret;
}
