void audio_release(int dev, struct file *file)
{
const struct coproc_operations *coprocessor;
int mode = translate_mode(file);
dev = dev >> 4;
/*
* We do this in DMAbuf_release(). Why are we doing it
* here? Why don't we test the file mode before setting
* both flags? DMAbuf_release() does.
* ...pester...pester...pester...
*/
audio_devs[dev]->dmap_out->closing = 1;
audio_devs[dev]->dmap_in->closing = 1;
/*
* We need to make sure we allocated the dmap_out buffer
* before we go mucking around with it in sync_output().
*/
if (mode & OPEN_WRITE)
sync_output(dev);
if ( (coprocessor = audio_devs[dev]->coproc) != NULL ) {
coprocessor->close(coprocessor->devc, COPR_PCM);
module_put(coprocessor->owner);
}
DMAbuf_release(dev, mode);
module_put(audio_devs[dev]->d->owner);
}
void handle_open(syscall_req_t* req, syscall_rsp_t* rsp)
{
char* name = sandbox_file_name(req->payload, req->payload_len);
open_subheader_t* o = &req->header.subheader.open;
int native_flags = translate_flags(o->flags);
int native_mode = translate_mode(o->mode);
rsp->header.return_val = open(name, native_flags, native_mode);
free(name);
}
File::File(Mount& mnt,
const fs::path& p,
yt::FDMode fdmode,
CreateIfNecessary create_if_necessary)
: ctx_(mnt.ctx_)
{
/* mode is not the same for both nfs_creat and nfs_open. For nfs_open
* mode has the same meaning as flags but for nfs_creat is the mode used
* for file creation. The newer version of libnfs makes this difference
* obvious by introducing a second field 'flags' along with mode. We should
* consider upgrading to the latest libnfs then and drop the workaround
* introduced below.
*/
const int mode = create_if_necessary == CreateIfNecessary::T ?
translate_create_mode(fdmode) : translate_mode(fdmode);
LOG_TRACE(mnt.share_name() << ", " << p << ", mode " << mode <<
", create: " << create_if_necessary);
nfsfh* fh;
int ret;
if (create_if_necessary == CreateIfNecessary::T)
{
ret = nfs_creat(ctx_.get(),
p.string().c_str(),
mode,
&fh);
}
else
{
ret = nfs_open(ctx_.get(),
p.string().c_str(),
mode,
&fh);
}
if (ret < 0)
{
const char* err = nfs_get_error(ctx_.get());
std::stringstream ss;
ss << "Failed to open " << p << ": " << err;
LOG_ERROR(ss.str());
throw Exception(ss.str().c_str());
}
else
{
fh_ = std::shared_ptr<nfsfh>(fh, FhDeleter(ctx_));
}
}
static void print_block(struct pt_block *block,
struct pt_image_section_cache *iscache,
const struct ptxed_options *options,
const struct ptxed_stats *stats,
uint64_t offset, uint64_t time)
{
xed_machine_mode_enum_t mode;
xed_state_t xed;
uint64_t last_ip;
if (!block || !options) {
printf("[internal error]\n");
return;
}
if (block->resynced)
printf("[overflow]\n");
if (block->enabled)
printf("[enabled]\n");
if (block->resumed)
printf("[resumed]\n");
if (options->track_blocks) {
printf("[block");
if (stats)
printf(" %" PRIx64, stats->blocks);
printf("]\n");
}
mode = translate_mode(block->mode);
xed_state_init2(&xed, mode, XED_ADDRESS_WIDTH_INVALID);
last_ip = 0ull;
for (; block->ninsn; --block->ninsn) {
xed_decoded_inst_t inst;
xed_error_enum_t xederrcode;
uint8_t raw[pt_max_insn_size], *praw;
int size, errcode;
/* For truncated block, the last instruction is provided in the
* block since it can't be read entirely from the image section
* cache.
*/
if (block->truncated && (block->ninsn == 1)) {
praw = block->raw;
size = block->size;
} else {
praw = raw;
size = pt_iscache_read(iscache, raw, sizeof(raw),
block->isid, block->ip);
if (size < 0) {
printf(" [error reading insn: (%d) %s]\n", size,
pt_errstr(pt_errcode(size)));
break;
}
}
xed_decoded_inst_zero_set_mode(&inst, &xed);
if (block->speculative)
printf("? ");
if (options->print_offset)
printf("%016" PRIx64 " ", offset);
if (options->print_time)
printf("%016" PRIx64 " ", time);
printf("%016" PRIx64, block->ip);
xederrcode = xed_decode(&inst, praw, size);
if (xederrcode != XED_ERROR_NONE) {
printf(" [xed decode error: (%u) %s]\n", xederrcode,
xed_error_enum_t2str(xederrcode));
break;
}
if (!options->dont_print_insn)
xed_print_insn(&inst, block->ip, options);
printf("\n");
last_ip = block->ip;
errcode = xed_next_ip(&block->ip, &inst, last_ip);
if (errcode < 0) {
diagnose_block_at("reconstruct error", offset, block,
errcode);
break;
}
}
/* Decode should have brought us to @block->end_ip. */
if (last_ip != block->end_ip)
diagnose_block_at("reconstruct error", offset, block,
-pte_nosync);
if (block->interrupted)
printf("[interrupt]\n");
if (block->aborted)
printf("[aborted]\n");
if (block->committed)
printf("[committed]\n");
if (block->disabled)
printf("[disabled]\n");
if (block->stopped)
printf("[stopped]\n");
}
static void print_insn(const struct pt_insn *insn, xed_state_t *xed,
const struct ptxed_options *options, uint64_t offset,
uint64_t time)
{
if (!insn || !options) {
printf("[internal error]\n");
return;
}
if (insn->resynced)
printf("[overflow]\n");
if (insn->enabled)
printf("[enabled]\n");
if (insn->resumed)
printf("[resumed]\n");
if (insn->speculative)
printf("? ");
if (options->print_offset)
printf("%016" PRIx64 " ", offset);
if (options->print_time)
printf("%016" PRIx64 " ", time);
printf("%016" PRIx64, insn->ip);
if (!options->dont_print_insn) {
xed_machine_mode_enum_t mode;
xed_decoded_inst_t inst;
xed_error_enum_t errcode;
mode = translate_mode(insn->mode);
xed_state_set_machine_mode(xed, mode);
xed_decoded_inst_zero_set_mode(&inst, xed);
errcode = xed_decode(&inst, insn->raw, insn->size);
switch (errcode) {
case XED_ERROR_NONE:
xed_print_insn(&inst, insn->ip, options);
break;
default:
printf(" [xed decode error: (%u) %s]", errcode,
xed_error_enum_t2str(errcode));
break;
}
}
printf("\n");
if (insn->interrupted)
printf("[interrupt]\n");
if (insn->aborted)
printf("[aborted]\n");
if (insn->committed)
printf("[committed]\n");
if (insn->disabled)
printf("[disabled]\n");
if (insn->stopped)
printf("[stopped]\n");
}
int audio_open(int dev, struct file *file)
{
int ret;
int bits;
int dev_type = dev & 0x0f;
int mode = translate_mode(file);
const struct audio_driver *driver;
const struct coproc_operations *coprocessor;
dev = dev >> 4;
if (dev_type == SND_DEV_DSP16)
bits = 16;
else
bits = 8;
if (dev < 0 || dev >= num_audiodevs)
return -ENXIO;
driver = audio_devs[dev]->d;
if (!try_module_get(driver->owner))
return -ENODEV;
if ((ret = DMAbuf_open(dev, mode)) < 0)
goto error_1;
if ( (coprocessor = audio_devs[dev]->coproc) != NULL ) {
if (!try_module_get(coprocessor->owner))
goto error_2;
if ((ret = coprocessor->open(coprocessor->devc, COPR_PCM)) < 0) {
printk(KERN_WARNING "Sound: Can't access coprocessor device\n");
goto error_3;
}
}
audio_devs[dev]->local_conversion = 0;
if (dev_type == SND_DEV_AUDIO)
set_format(dev, AFMT_MU_LAW);
else
set_format(dev, bits);
audio_devs[dev]->audio_mode = AM_NONE;
return 0;
/*
* Clean-up stack: this is what needs (un)doing if
* we can't open the audio device ...
*/
error_3:
module_put(coprocessor->owner);
error_2:
DMAbuf_release(dev, mode);
error_1:
module_put(driver->owner);
return ret;
}