static void
clean(void)
{
int i, j, k;
Buf b, path;
Vec dir;
binit(&b);
binit(&path);
vinit(&dir);
for(i=0; i<nelem(cleantab); i++) {
if((streq(cleantab[i], "cmd/prof")) && !isdir(cleantab[i]))
continue;
bpathf(&path, "%s/src/%s", goroot, cleantab[i]);
xreaddir(&dir, bstr(&path));
// Remove generated files.
for(j=0; j<dir.len; j++) {
for(k=0; k<nelem(gentab); k++) {
if(hasprefix(dir.p[j], gentab[k].nameprefix))
xremove(bpathf(&b, "%s/%s", bstr(&path), dir.p[j]));
}
}
// Remove generated binary named for directory.
if(hasprefix(cleantab[i], "cmd/"))
xremove(bpathf(&b, "%s/%s", bstr(&path), cleantab[i]+4));
}
// remove src/pkg/runtime/z* unconditionally
vreset(&dir);
bpathf(&path, "%s/src/pkg/runtime", goroot);
xreaddir(&dir, bstr(&path));
for(j=0; j<dir.len; j++) {
if(hasprefix(dir.p[j], "z"))
xremove(bpathf(&b, "%s/%s", bstr(&path), dir.p[j]));
}
if(rebuildall) {
// Remove object tree.
xremoveall(bpathf(&b, "%s/pkg/obj/%s_%s", goroot, gohostos, gohostarch));
// Remove installed packages and tools.
xremoveall(bpathf(&b, "%s/pkg/%s_%s", goroot, gohostos, gohostarch));
xremoveall(bpathf(&b, "%s/pkg/%s_%s", goroot, goos, goarch));
xremoveall(tooldir);
// Remove cached version info.
xremove(bpathf(&b, "%s/VERSION.cache", goroot));
}
bfree(&b);
bfree(&path);
vfree(&dir);
}
/*
* Converts @partno (partition number) to devno of the partition.
* The @cxt handles wholedisk device.
*
* Note that this code does not expect any special format of the
* partitions devnames.
*/
dev_t sysfs_partno_to_devno(struct sysfs_cxt *cxt, int partno)
{
DIR *dir;
struct dirent *d;
char path[256];
dev_t devno = 0;
dir = sysfs_opendir(cxt, NULL);
if (!dir)
return 0;
while ((d = xreaddir(dir))) {
int n, maj, min;
if (!sysfs_is_partition_dirent(dir, d, NULL))
continue;
snprintf(path, sizeof(path), "%s/partition", d->d_name);
if (sysfs_read_int(cxt, path, &n))
continue;
if (n == partno) {
snprintf(path, sizeof(path), "%s/dev", d->d_name);
if (sysfs_scanf(cxt, path, "%d:%d", &maj, &min) == 2)
devno = makedev(maj, min);
break;
}
}
closedir(dir);
return devno;
}
// xremoveall removes the file or directory tree rooted at p.
void
xremoveall(char *p)
{
int i;
Buf b;
Vec dir;
binit(&b);
vinit(&dir);
if(isdir(p)) {
xreaddir(&dir, p);
for(i=0; i<dir.len; i++) {
bprintf(&b, "%s/%s", p, dir.p[i]);
xremoveall(bstr(&b));
}
if(vflag > 2)
xprintf("rm %s\n", p);
rmdir(p);
} else {
if(vflag > 2)
xprintf("rm %s\n", p);
unlink(p);
}
bfree(&b);
vfree(&dir);
}
int main() {
char *testdata, *testin, *testexp, *testout, *diffcmd;
const char *srcdir;
DIR *dp;
struct dirent *de;
if(!(srcdir = getenv("srcdir")))
srcdir = ".";
dp = opendirf(&testdata, "%s/%s", srcdir, "testdata-rc");
while((de = xreaddir(testdata, dp))) {
if(strchr(de->d_name, '.') || strchr(de->d_name, '~'))
continue;
xasprintf(&testin, "%s/%s", testdata, de->d_name);
xasprintf(&testout, "%s/%s.out", testdata, de->d_name);
xasprintf(&testexp, "%s/%s.exp", testdata, de->d_name);
reset_rc();
read_rc_path(testin);
write_rc_path(testout);
xasprintf(&diffcmd, "diff -u %s %s", testexp, testout);
if(system(diffcmd))
exit(1);
}
return 0;
}
void setup_watches (const char *dir)
{
DIR *dirfd = opendir(dir);
char fullent[PATH_MAX];
int dirlen = strlen(dir);
memcpy(fullent, dir, dirlen);
fullent[dirlen] = '/';
struct dirent *ent;
if (!dirfd) {
if (errno == ENOENT || errno == EACCES)
return;
die_errno("opendir");
}
while ((ent = xreaddir(dirfd))) {
int entlen = strlen(ent->d_name);
if (!strcmp(ent->d_name, ".")
|| !strcmp(ent->d_name, ".."))
continue;
memcpy(fullent+dirlen+1, ent->d_name, entlen);
fullent[dirlen+1+entlen] = '\0';
if (is_ignored(fullent))
continue;
if (!isdir(fullent))
continue;
if (!setup_one_watch(fullent))
setup_watches(fullent);
}
if (closedir(dirfd))
die_errno("closedir");
}
int sysfs_count_dirents(struct sysfs_cxt *cxt, const char *attr)
{
DIR *dir;
int r = 0;
if (!(dir = sysfs_opendir(cxt, attr)))
return 0;
while (xreaddir(dir)) r++;
closedir(dir);
return r;
}
static void
clean(void)
{
int i, j, k;
Buf b, path;
Vec dir;
binit(&b);
binit(&path);
vinit(&dir);
for(i=0; i<nelem(cleantab); i++) {
bpathf(&path, "%s/src/%s", goroot, cleantab[i]);
xreaddir(&dir, bstr(&path));
// Remove generated files.
for(j=0; j<dir.len; j++) {
for(k=0; k<nelem(gentab); k++) {
if(hasprefix(dir.p[j], gentab[k].nameprefix))
xremove(bpathf(&b, "%s/%s", bstr(&path), dir.p[j]));
}
}
// Remove generated binary named for directory.
if(hasprefix(cleantab[i], "cmd/"))
xremove(bpathf(&b, "%s/%s", bstr(&path), cleantab[i]+4));
}
// remove src/runtime/zaexperiment.h and
// except leave zgoos and zgoarch, now maintained with go generate.
bpathf(&path, "%s/src/runtime", goroot);
for(j=0; j<nelem(runtimegen); j++)
xremove(bpathf(&b, "%s/%s", bstr(&path), runtimegen[j]));
if(rebuildall) {
// Remove object tree.
xremoveall(bpathf(&b, "%s/pkg/obj/%s_%s", goroot, gohostos, gohostarch));
// Remove installed packages and tools.
xremoveall(bpathf(&b, "%s/pkg/%s_%s", goroot, gohostos, gohostarch));
xremoveall(bpathf(&b, "%s/pkg/%s_%s", goroot, goos, goarch));
xremoveall(tooldir);
// Remove cached version info.
xremove(bpathf(&b, "%s/VERSION.cache", goroot));
}
bfree(&b);
bfree(&path);
vfree(&dir);
}
int sysfs_count_partitions(struct sysfs_cxt *cxt, const char *devname)
{
DIR *dir;
struct dirent *d;
int r = 0;
if (!(dir = sysfs_opendir(cxt, NULL)))
return 0;
while ((d = xreaddir(dir))) {
if (sysfs_is_partition_dirent(dir, d, devname))
r++;
}
closedir(dir);
return r;
}
/*
* Returns slave name if there is only one slave, otherwise returns NULL.
* The result should be deallocated by free().
*/
char *sysfs_get_slave(struct sysfs_cxt *cxt)
{
DIR *dir;
struct dirent *d;
char *name = NULL;
if (!(dir = sysfs_opendir(cxt, "slaves")))
return NULL;
while ((d = xreaddir(dir))) {
if (name)
goto err; /* more slaves */
name = strdup(d->d_name);
}
closedir(dir);
return name;
err:
free(name);
closedir(dir);
return NULL;
}
// 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);
}
int main(void)
{
struct dirent *de;
unsigned int fd, target_fd;
if (unshare(CLONE_FILES) == -1)
return 1;
/* Wipe fdtable. */
do {
DIR *d;
d = opendir("/proc/self/fd");
if (!d)
return 1;
de = xreaddir(d);
assert(de->d_type == DT_DIR);
assert(streq(de->d_name, "."));
de = xreaddir(d);
assert(de->d_type == DT_DIR);
assert(streq(de->d_name, ".."));
next:
de = xreaddir(d);
if (de) {
unsigned long long fd_ull;
unsigned int fd;
char *end;
assert(de->d_type == DT_LNK);
fd_ull = xstrtoull(de->d_name, &end);
assert(*end == '\0');
assert(fd_ull == (unsigned int)fd_ull);
fd = fd_ull;
if (fd == dirfd(d))
goto next;
close(fd);
}
closedir(d);
} while (de);
/* Now fdtable is clean. */
fd = open("/", O_PATH|O_DIRECTORY);
assert(fd == 0);
test_lookup(fd);
close(fd);
/* Clean again! */
fd = open("/", O_PATH|O_DIRECTORY);
assert(fd == 0);
/* Default RLIMIT_NOFILE-1 */
target_fd = 1023;
while (target_fd > 0) {
if (dup2(fd, target_fd) == target_fd)
break;
target_fd /= 2;
}
assert(target_fd > 0);
close(fd);
test_lookup(target_fd);
close(target_fd);
return 0;
}