-/*
- * osspd - OSS Proxy Daemon: emulate OSS device using CUSE
- *
- * Copyright (C) 2008-2010 SUSE Linux Products GmbH
- * Copyright (C) 2008-2010 Tejun Heo <tj@kernel.org>
- *
- * This file is released under the GPLv2.
- */
-
-#define FUSE_USE_VERSION 28
-#define _GNU_SOURCE
-
-#include <assert.h>
-#include <cuse_lowlevel.h>
-#include <fcntl.h>
-#include <fuse_opt.h>
-#include <libgen.h>
-#include <limits.h>
-#include <pthread.h>
-#include <pwd.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <sys/soundcard.h>
-#include <sys/time.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include "ossp.h"
-#include "ossp-util.h"
-
-/*
- * MMAP support needs to be updated to the new fuse MMAP API. Disable
- * it for the time being.
- */
-#warning mmap support disabled for now
-/* #define OSSP_MMAP */
-
-#define DFL_MIXER_NAME "mixer"
-#define DFL_DSP_NAME "dsp"
-#define DFL_ADSP_NAME "adsp"
-#define STRFMT "S[%u/%d]"
-#define STRID(os) os->id, os->pid
-
-#define dbg1_os(os, fmt, args...) dbg1(STRFMT" "fmt, STRID(os) , ##args)
-#define dbg0_os(os, fmt, args...) dbg0(STRFMT" "fmt, STRID(os) , ##args)
-#define warn_os(os, fmt, args...) warn(STRFMT" "fmt, STRID(os) , ##args)
-#define err_os(os, fmt, args...) err(STRFMT" "fmt, STRID(os) , ##args)
-#define warn_ose(os, err, fmt, args...) \
- warn_e(err, STRFMT" "fmt, STRID(os) , ##args)
-#define err_ose(os, err, fmt, args...) \
- err_e(err, STRFMT" "fmt, STRID(os) , ##args)
-
-enum {
- SNDRV_OSS_VERSION = ((3<<16)|(8<<8)|(1<<4)|(0)), /* 3.8.1a */
- DFL_MIXER_MAJOR = 14,
- DFL_MIXER_MINOR = 0,
- DFL_DSP_MAJOR = 14,
- DFL_DSP_MINOR = 3,
- DFL_ADSP_MAJOR = 14,
- DFL_ADSP_MINOR = 12,
- DFL_MAX_STREAMS = 128,
- MIXER_PUT_DELAY = 600, /* 10 mins */
- /* DSPS_MMAP_SIZE / 2 must be multiple of SHMLBA */
- DSPS_MMAP_SIZE = 2 * (512 << 10), /* 512k for each dir */
-};
-
-struct ossp_uid_cnt {
- struct list_head link;
- uid_t uid;
- unsigned nr_os;
-};
-
-struct ossp_mixer {
- pid_t pgrp;
- struct list_head link;
- struct list_head delayed_put_link;
- unsigned refcnt;
- /* the following two fields are protected by mixer_mutex */
- int vol[2][2];
- int modify_counter;
- time_t put_expires;
-};
-
-struct ossp_mixer_cmd {
- struct ossp_mixer *mixer;
- struct ossp_mixer_arg set;
- int out_dir;
- int rvol;
-};
-
-#define for_each_vol(i, j) \
- for (i = 0, j = 0; i < 2; j += i << 1, j++, i = j >> 1, j &= 1)
-
-struct ossp_stream {
- unsigned id; /* stream ID */
- struct list_head link;
- struct list_head pgrp_link;
- struct list_head notify_link;
- unsigned refcnt;
- pthread_mutex_t cmd_mutex;
- pthread_mutex_t mmap_mutex;
- struct fuse_pollhandle *ph;
-
- /* stream owner info */
- pid_t pid;
- pid_t pgrp;
- uid_t uid;
- gid_t gid;
-
- /* slave info */
- pid_t slave_pid;
- int cmd_fd;
- int notify_tx;
- int notify_rx;
-
- /* the following dead flag is set asynchronously, keep it separate. */
- int dead;
-
- /* stream mixer state, protected by mixer_mutex */
- int mixer_pending;
- int vol[2][2];
- int vol_set[2][2];
-
- off_t mmap_off;
- size_t mmap_size;
-
- struct ossp_uid_cnt *ucnt;
- struct fuse_session *se; /* associated fuse session */
- struct ossp_mixer *mixer;
-};
-
-struct ossp_dsp_stream {
- struct ossp_stream os;
- unsigned rw;
- unsigned mmapped;
- int nonblock;
-};
-
-#define os_to_dsps(_os) container_of(_os, struct ossp_dsp_stream, os)
-
-static unsigned max_streams;
-static unsigned umax_streams;
-static unsigned hashtbl_size;
-static char dsp_slave_path[PATH_MAX];
-
-static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_mutex_t mixer_mutex = PTHREAD_MUTEX_INITIALIZER;
-static unsigned long *os_id_bitmap;
-static unsigned nr_mixers;
-static struct list_head *mixer_tbl; /* indexed by PGRP */
-static struct list_head *os_tbl; /* indexed by ID */
-static struct list_head *os_pgrp_tbl; /* indexed by PGRP */
-static struct list_head *os_notify_tbl; /* indexed by notify fd */
-static LIST_HEAD(uid_cnt_list);
-static int notify_epfd; /* epoll used to monitor notify fds */
-static pthread_t notify_poller_thread;
-static pthread_t slave_reaper_thread;
-static pthread_t mixer_delayed_put_thread;
-static pthread_t cuse_mixer_thread;
-static pthread_t cuse_adsp_thread;
-static pthread_cond_t notify_poller_kill_wait = PTHREAD_COND_INITIALIZER;
-static pthread_cond_t slave_reaper_wait = PTHREAD_COND_INITIALIZER;
-static LIST_HEAD(slave_corpse_list);
-static LIST_HEAD(mixer_delayed_put_head); /* delayed reference */
-static pthread_cond_t mixer_delayed_put_cond = PTHREAD_COND_INITIALIZER;
-
-static int init_wait_fd = -1;
-static int exit_on_idle;
-static struct fuse_session *mixer_se;
-static struct fuse_session *dsp_se;
-static struct fuse_session *adsp_se;
-
-static void put_os(struct ossp_stream *os);
-
-
-/***************************************************************************
- * Accessors
- */
-
-static struct list_head *mixer_tbl_head(pid_t pid)
-{
- return &mixer_tbl[pid % hashtbl_size];
-}
-
-static struct list_head *os_tbl_head(uint64_t id)
-{
- return &os_tbl[id % hashtbl_size];
-}
-
-static struct list_head *os_pgrp_tbl_head(pid_t pgrp)
-{
- return &os_pgrp_tbl[pgrp % hashtbl_size];
-}
-
-static struct list_head *os_notify_tbl_head(int notify_rx)
-{
- return &os_notify_tbl[notify_rx % hashtbl_size];
-}
-
-static struct ossp_mixer *find_mixer_locked(pid_t pgrp)
-{
- struct ossp_mixer *mixer;
-
- list_for_each_entry(mixer, mixer_tbl_head(pgrp), link)
- if (mixer->pgrp == pgrp)
- return mixer;
- return NULL;
-}
-
-static struct ossp_mixer *find_mixer(pid_t pgrp)
-{
- struct ossp_mixer *mixer;
-
- pthread_mutex_lock(&mutex);
- mixer = find_mixer_locked(pgrp);
- pthread_mutex_unlock(&mutex);
- return mixer;
-}
-
-static struct ossp_stream *find_os(unsigned id)
-{
- struct ossp_stream *os, *found = NULL;
-
- pthread_mutex_lock(&mutex);
- list_for_each_entry(os, os_tbl_head(id), link)
- if (os->id == id) {
- found = os;
- break;
- }
- pthread_mutex_unlock(&mutex);
- return found;
-}
-
-static struct ossp_stream *find_os_by_notify_rx(int notify_rx)
-{
- struct ossp_stream *os, *found = NULL;
-
- pthread_mutex_lock(&mutex);
- list_for_each_entry(os, os_notify_tbl_head(notify_rx), notify_link)
- if (os->notify_rx == notify_rx) {
- found = os;
- break;
- }
- pthread_mutex_unlock(&mutex);
- return found;
-}
-
-
-/***************************************************************************
- * Command and ioctl helpers
- */
-
-static ssize_t exec_cmd_intern(struct ossp_stream *os, enum ossp_opcode opcode,
- const void *carg, size_t carg_size, const void *din, size_t din_size,
- void *rarg, size_t rarg_size, void *dout, size_t *dout_sizep, int fd)
-{
- size_t dout_size = dout_sizep ? *dout_sizep : 0;
- struct ossp_cmd cmd = { .magic = OSSP_CMD_MAGIC, .opcode = opcode,
- .din_size = din_size,
- .dout_size = dout_size };
- struct iovec iov = { &cmd, sizeof(cmd) };
- struct msghdr msg = { .msg_iov = &iov, .msg_iovlen = 1 };
- struct ossp_reply reply = { };
- char cmsg_buf[CMSG_SPACE(sizeof(fd))];
- char reason[512];
- int rc;
-
- if (os->dead)
- return -EIO;
-
- dbg1_os(os, "%s carg=%zu din=%zu rarg=%zu dout=%zu",
- ossp_cmd_str[opcode], carg_size, din_size, rarg_size,
- dout_size);
-
- if (fd >= 0) {
- struct cmsghdr *cmsg;
-
- msg.msg_control = cmsg_buf;
- msg.msg_controllen = sizeof(cmsg_buf);
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
- *(int *)CMSG_DATA(cmsg) = fd;
- msg.msg_controllen = cmsg->cmsg_len;
- }
-
- if (sendmsg(os->cmd_fd, &msg, 0) <= 0) {
- rc = -errno;
- snprintf(reason, sizeof(reason), "command sendmsg failed: %s",
- strerror(-rc));
- goto fail;
- }
-
- if ((rc = write_fill(os->cmd_fd, carg, carg_size)) < 0 ||
- (rc = write_fill(os->cmd_fd, din, din_size)) < 0) {
- snprintf(reason, sizeof(reason),
- "can't tranfer command argument and/or data: %s",
- strerror(-rc));
- goto fail;
- }
- if ((rc = read_fill(os->cmd_fd, &reply, sizeof(reply))) < 0) {
- snprintf(reason, sizeof(reason), "can't read reply: %s",
- strerror(-rc));
- goto fail;
- }
-
- if (reply.magic != OSSP_REPLY_MAGIC) {
- snprintf(reason, sizeof(reason),
- "reply magic mismatch %x != %x",
- reply.magic, OSSP_REPLY_MAGIC);
- rc = -EINVAL;
- goto fail;
- }
-
- if (reply.result < 0)
- goto out_unlock;
-
- if (reply.dout_size > dout_size) {
- snprintf(reason, sizeof(reason),
- "data out size overflow %zu > %zu",
- reply.dout_size, dout_size);
- rc = -EINVAL;
- goto fail;
- }
-
- dout_size = reply.dout_size;
- if (dout_sizep)
- *dout_sizep = dout_size;
-
- if ((rc = read_fill(os->cmd_fd, rarg, rarg_size)) < 0 ||
- (rc = read_fill(os->cmd_fd, dout, dout_size)) < 0) {
- snprintf(reason, sizeof(reason), "can't read data out: %s",
- strerror(-rc));
- goto fail;
- }
-
-out_unlock:
- dbg1_os(os, " completed, result=%d dout=%zu",
- reply.result, dout_size);
- return reply.result;
-
-fail:
- warn_os(os, "communication with slave failed (%s)", reason);
- os->dead = 1;
- return rc;
-}
-
-static ssize_t exec_cmd(struct ossp_stream *os, enum ossp_opcode opcode,
- const void *carg, size_t carg_size, const void *din, size_t din_size,
- void *rarg, size_t rarg_size, void *dout, size_t *dout_sizep, int fd)
-{
- int is_mixer;
- int i, j;
- ssize_t ret, mret;
-
- /* mixer command is handled exlicitly below */
- is_mixer = opcode == OSSP_MIXER;
- if (is_mixer) {
- ret = -pthread_mutex_trylock(&os->cmd_mutex);
- if (ret)
- return ret;
- } else {
- pthread_mutex_lock(&os->cmd_mutex);
-
- ret = exec_cmd_intern(os, opcode, carg, carg_size,
- din, din_size, rarg, rarg_size,
- dout, dout_sizep, fd);
- }
-
- /* lazy mixer handling */
- pthread_mutex_lock(&mixer_mutex);
-
- if (os->mixer_pending) {
- struct ossp_mixer_arg marg;
- repeat_mixer:
- /* we have mixer command pending */
- memcpy(marg.vol, os->vol_set, sizeof(os->vol_set));
- memset(os->vol_set, -1, sizeof(os->vol_set));
-
- pthread_mutex_unlock(&mixer_mutex);
- mret = exec_cmd_intern(os, OSSP_MIXER, &marg, sizeof(marg),
- NULL, 0, &marg, sizeof(marg), NULL, NULL,
- -1);
- pthread_mutex_lock(&mixer_mutex);
-
- /* was there mixer set request while executing mixer command? */
- for_each_vol(i, j)
- if (os->vol_set[i][j] >= 0)
- goto repeat_mixer;
-
- /* update internal mixer state */
- if (mret == 0) {
- for_each_vol(i, j) {
- if (marg.vol[i][j] >= 0) {
- if (os->vol[i][j] != marg.vol[i][j])
- os->mixer->modify_counter++;
- os->vol[i][j] = marg.vol[i][j];
- }
- }
- }
- os->mixer_pending = 0;
- }
-
- pthread_mutex_unlock(&os->cmd_mutex);
-
- /*
- * mixer mutex must be released after cmd_mutex so that
- * exec_mixer_cmd() can guarantee that mixer_pending flags
- * will be handled immediately or when the currently
- * in-progress command completes.
- */
- pthread_mutex_unlock(&mixer_mutex);
-
- return is_mixer ? mret : ret;
-}
-
-static ssize_t exec_simple_cmd(struct ossp_stream *os,
- enum ossp_opcode opcode, void *carg, void *rarg)
-{
- return exec_cmd(os, opcode,
- carg, ossp_arg_sizes[opcode].carg_size, NULL, 0,
- rarg, ossp_arg_sizes[opcode].rarg_size, NULL, NULL, -1);
-}
-
-static int ioctl_prep_uarg(fuse_req_t req, void *in, size_t in_sz, void *out,
- size_t out_sz, void *uarg, const void *in_buf,
- size_t in_bufsz, size_t out_bufsz)
-{
- struct iovec in_iov = { }, out_iov = { };
- int retry = 0;
-
- if (in) {
- if (!in_bufsz) {
- in_iov.iov_base = uarg;
- in_iov.iov_len = in_sz;
- retry = 1;
- } else {
- assert(in_bufsz == in_sz);
- memcpy(in, in_buf, in_sz);
- }
- }
-
- if (out) {
- if (!out_bufsz) {
- out_iov.iov_base = uarg;
- out_iov.iov_len = out_sz;
- retry = 1;
- } else
- assert(out_bufsz == out_sz);
- }
-
- if (retry)
- fuse_reply_ioctl_retry(req, &in_iov, 1, &out_iov, 1);
-
- return retry;
-}
-
-#define PREP_UARG(inp, outp) do { \
- if (ioctl_prep_uarg(req, (inp), sizeof(*(inp)), \
- (outp), sizeof(*(outp)), uarg, \
- in_buf, in_bufsz, out_bufsz)) \
- return; \
-} while (0)
-
-#define IOCTL_RETURN(result, outp) do { \
- if ((outp) != NULL) \
- fuse_reply_ioctl(req, result, (outp), sizeof(*(outp))); \
- else \
- fuse_reply_ioctl(req, result, NULL, 0); \
- return; \
-} while (0)
-
-
-/***************************************************************************
- * Mixer implementation
- */
-
-static void put_mixer_real(struct ossp_mixer *mixer)
-{
- if (!--mixer->refcnt) {
- dbg0("DESTROY mixer(%d)", mixer->pgrp);
- list_del_init(&mixer->link);
- list_del_init(&mixer->delayed_put_link);
- free(mixer);
- nr_mixers--;
-
- /*
- * If exit_on_idle, mixer for pgrp0 is touched during
- * init and each stream has mixer attached. As mixers
- * are destroyed after they have been idle for
- * MIXER_PUT_DELAY seconds, we can use it for idle
- * detection. Note that this might race with
- * concurrent open. The race is inherent.
- */
- if (exit_on_idle && !nr_mixers) {
- info("idle, exiting");
- exit(0);
- }
- }
-}
-
-static struct ossp_mixer *get_mixer(pid_t pgrp)
-{
- struct ossp_mixer *mixer;
-
- pthread_mutex_lock(&mutex);
-
- /* is there a matching one? */
- mixer = find_mixer_locked(pgrp);
- if (mixer) {
- if (list_empty(&mixer->delayed_put_link))
- mixer->refcnt++;
- else
- list_del_init(&mixer->delayed_put_link);
- goto out_unlock;
- }
-
- /* reap delayed put list if there are too many mixers */
- while (nr_mixers > 2 * max_streams &&
- !list_empty(&mixer_delayed_put_head)) {
- struct ossp_mixer *mixer =
- list_first_entry(&mixer_delayed_put_head,
- struct ossp_mixer, delayed_put_link);
-
- assert(mixer->refcnt == 1);
- put_mixer_real(mixer);
- }
-
- /* create a new one */
- mixer = calloc(1, sizeof(*mixer));
- if (!mixer) {
- warn("failed to allocate mixer for %d", pgrp);
- mixer = NULL;
- goto out_unlock;
- }
-
- mixer->pgrp = pgrp;
- INIT_LIST_HEAD(&mixer->link);
- INIT_LIST_HEAD(&mixer->delayed_put_link);
- mixer->refcnt = 1;
- memset(mixer->vol, -1, sizeof(mixer->vol));
-
- list_add(&mixer->link, mixer_tbl_head(pgrp));
- nr_mixers++;
- dbg0("CREATE mixer(%d)", pgrp);
-
-out_unlock:
- pthread_mutex_unlock(&mutex);
- return mixer;
-}
-
-static void put_mixer(struct ossp_mixer *mixer)
-{
- pthread_mutex_lock(&mutex);
-
- if (mixer) {
- if (mixer->refcnt == 1) {
- struct timespec ts;
-
- clock_gettime(CLOCK_REALTIME, &ts);
- mixer->put_expires = ts.tv_sec + MIXER_PUT_DELAY;
- list_add_tail(&mixer->delayed_put_link,
- &mixer_delayed_put_head);
- pthread_cond_signal(&mixer_delayed_put_cond);
- } else
- put_mixer_real(mixer);
- }
-
- pthread_mutex_unlock(&mutex);
-}
-
-static void *mixer_delayed_put_worker(void *arg)
-{
- struct ossp_mixer *mixer;
- struct timespec ts;
- time_t now;
-
- pthread_mutex_lock(&mutex);
-again:
- clock_gettime(CLOCK_REALTIME, &ts);
- now = ts.tv_sec;
-
- mixer = NULL;
- while (!list_empty(&mixer_delayed_put_head)) {
- mixer = list_first_entry(&mixer_delayed_put_head,
- struct ossp_mixer, delayed_put_link);
-
- if (now <= mixer->put_expires)
- break;
-
- assert(mixer->refcnt == 1);
- put_mixer_real(mixer);
- mixer = NULL;
- }
-
- if (mixer) {
- ts.tv_sec = mixer->put_expires + 1;
- pthread_cond_timedwait(&mixer_delayed_put_cond, &mutex, &ts);
- } else
- pthread_cond_wait(&mixer_delayed_put_cond, &mutex);
-
- goto again;
-}
-
-static void init_mixer_cmd(struct ossp_mixer_cmd *mxcmd,
- struct ossp_mixer *mixer)
-{
- memset(mxcmd, 0, sizeof(*mxcmd));
- memset(&mxcmd->set.vol, -1, sizeof(mxcmd->set.vol));
- mxcmd->mixer = mixer;
- mxcmd->out_dir = -1;
-}
-
-static int exec_mixer_cmd(struct ossp_mixer_cmd *mxcmd, struct ossp_stream *os)
-{
- int i, j, rc;
-
- /*
- * Set pending flags before trying to execute mixer command.
- * Combined with lock release order in exec_cmd(), this
- * guarantees that the mixer command will be executed
- * immediately or when the current command completes.
- */
- pthread_mutex_lock(&mixer_mutex);
- os->mixer_pending = 1;
- for_each_vol(i, j)
- if (mxcmd->set.vol[i][j] >= 0)
- os->vol_set[i][j] = mxcmd->set.vol[i][j];
- pthread_mutex_unlock(&mixer_mutex);
-
- rc = exec_simple_cmd(os, OSSP_MIXER, NULL, NULL);
- if (rc >= 0) {
- dbg0_os(os, "volume set=%d/%d:%d/%d get=%d/%d:%d/%d",
- mxcmd->set.vol[PLAY][LEFT], mxcmd->set.vol[PLAY][RIGHT],
- mxcmd->set.vol[REC][LEFT], mxcmd->set.vol[REC][RIGHT],
- os->vol[PLAY][LEFT], os->vol[PLAY][RIGHT],
- os->vol[REC][LEFT], os->vol[REC][RIGHT]);
- } else if (rc != -EBUSY)
- warn_ose(os, rc, "mixer command failed");
-
- return rc;
-}
-
-static void finish_mixer_cmd(struct ossp_mixer_cmd *mxcmd)
-{
- struct ossp_mixer *mixer = mxcmd->mixer;
- struct ossp_stream *os;
- int dir = mxcmd->out_dir;
- int vol[2][2] = { };
- int cnt[2][2] = { };
- int i, j;
-
- pthread_mutex_lock(&mixer_mutex);
-
- /* get volume of all streams attached to this mixer */
- pthread_mutex_lock(&mutex);
- list_for_each_entry(os, os_pgrp_tbl_head(mixer->pgrp), pgrp_link) {
- if (os->pgrp != mixer->pgrp)
- continue;
- for_each_vol(i, j) {
- if (os->vol[i][j] < 0)
- continue;
- vol[i][j] += os->vol[i][j];
- cnt[i][j]++;
- }
- }
- pthread_mutex_unlock(&mutex);
-
- /* calculate the summary volume values */
- for_each_vol(i, j) {
- if (mxcmd->set.vol[i][j] >= 0)
- vol[i][j] = mxcmd->set.vol[i][j];
- else if (cnt[i][j])
- vol[i][j] = vol[i][j] / cnt[i][j];
- else if (mixer->vol[i][j] >= 0)
- vol[i][j] = mixer->vol[i][j];
- else
- vol[i][j] = 100;
-
- vol[i][j] = min(max(0, vol[i][j]), 100);
- }
-
- if (dir >= 0)
- mxcmd->rvol = vol[dir][LEFT] | (vol[dir][RIGHT] << 8);
-
- pthread_mutex_unlock(&mixer_mutex);
-}
-
-static void mixer_simple_ioctl(fuse_req_t req, struct ossp_mixer *mixer,
- unsigned cmd, void *uarg, const void *in_buf,
- size_t in_bufsz, size_t out_bufsz,
- int *not_minep)
-{
- const char *id = "OSS Proxy", *name = "Mixer";
- int i;
-
- switch (cmd) {
- case SOUND_MIXER_INFO: {
- struct mixer_info info = { };
-
- PREP_UARG(NULL, &info);
- strncpy(info.id, id, sizeof(info.id) - 1);
- strncpy(info.name, name, sizeof(info.name) - 1);
- info.modify_counter = mixer->modify_counter;
- IOCTL_RETURN(0, &info);
- }
-
- case SOUND_OLD_MIXER_INFO: {
- struct _old_mixer_info info = { };
-
- PREP_UARG(NULL, &info);
- strncpy(info.id, id, sizeof(info.id) - 1);
- strncpy(info.name, name, sizeof(info.name) - 1);
- IOCTL_RETURN(0, &info);
- }
-
- case OSS_GETVERSION:
- i = SNDRV_OSS_VERSION;
- goto puti;
- case SOUND_MIXER_READ_DEVMASK:
- case SOUND_MIXER_READ_STEREODEVS:
- i = SOUND_MASK_PCM | SOUND_MASK_IGAIN;
- goto puti;
- case SOUND_MIXER_READ_CAPS:
- i = SOUND_CAP_EXCL_INPUT;
- goto puti;
- case SOUND_MIXER_READ_RECMASK:
- case SOUND_MIXER_READ_RECSRC:
- i = SOUND_MASK_IGAIN;
- goto puti;
- puti:
- PREP_UARG(NULL, &i);
- IOCTL_RETURN(0, &i);
-
- case SOUND_MIXER_WRITE_RECSRC:
- IOCTL_RETURN(0, NULL);
-
- default:
- *not_minep = 1;
- return;
- }
- assert(0);
-}
-
-static void mixer_do_ioctl(fuse_req_t req, struct ossp_mixer *mixer,
- unsigned cmd, void *uarg, const void *in_buf,
- size_t in_bufsz, size_t out_bufsz)
-{
- struct ossp_mixer_cmd mxcmd;
- struct ossp_stream *os, **osa;
- int not_mine = 0;
- int slot = cmd & 0xff, dir;
- int nr_os;
- int i, rc;
-
- mixer_simple_ioctl(req, mixer, cmd, uarg, in_buf, in_bufsz, out_bufsz,
- ¬_mine);
- if (!not_mine)
- return;
-
- rc = -ENXIO;
- if (!(cmd & (SIOC_IN | SIOC_OUT)))
- goto err;
-
- /*
- * Okay, it's not one of the easy ones. Build mxcmd for
- * actual volume control.
- */
- if (cmd & SIOC_IN)
- PREP_UARG(&i, &i);
- else
- PREP_UARG(NULL, &i);
-
- switch (slot) {
- case SOUND_MIXER_PCM:
- dir = PLAY;
- break;
- case SOUND_MIXER_IGAIN:
- dir = REC;
- break;
- default:
- i = 0;
- IOCTL_RETURN(0, &i);
- }
-
- init_mixer_cmd(&mxcmd, mixer);
-
- if (cmd & SIOC_IN) {
- unsigned l, r;
-
- rc = -EINVAL;
- l = i & 0xff;
- r = (i >> 8) & 0xff;
- if (l > 100 || r > 100)
- goto err;
-
- mixer->vol[dir][LEFT] = mxcmd.set.vol[dir][LEFT] = l;
- mixer->vol[dir][RIGHT] = mxcmd.set.vol[dir][RIGHT] = r;
- }
- mxcmd.out_dir = dir;
-
- /*
- * Apply volume conrol
- */
- /* acquire target streams */
- pthread_mutex_lock(&mutex);
- osa = calloc(max_streams, sizeof(osa[0]));
- if (!osa) {
- pthread_mutex_unlock(&mutex);
- rc = -ENOMEM;
- goto err;
- }
-
- nr_os = 0;
- list_for_each_entry(os, os_pgrp_tbl_head(mixer->pgrp), pgrp_link) {
- if (os->pgrp == mixer->pgrp) {
- osa[nr_os++] = os;
- os->refcnt++;
- }
- }
-
- pthread_mutex_unlock(&mutex);
-
- /* execute mxcmd for each stream and put it */
- for (i = 0; i < nr_os; i++) {
- exec_mixer_cmd(&mxcmd, osa[i]);
- put_os(osa[i]);
- }
-
- finish_mixer_cmd(&mxcmd);
- free(osa);
-
- IOCTL_RETURN(0, out_bufsz ? &mxcmd.rvol : NULL);
-
-err:
- fuse_reply_err(req, -rc);
-}
-
-static void mixer_open(fuse_req_t req, struct fuse_file_info *fi)
-{
- pid_t pid = fuse_req_ctx(req)->pid, pgrp;
- struct ossp_mixer *mixer;
- int rc;
-
- rc = get_proc_self_info(pid, &pgrp, NULL, 0);
- if (rc) {
- err_e(rc, "get_proc_self_info(%d) failed", pid);
- fuse_reply_err(req, -rc);
- return;
- }
-
- mixer = get_mixer(pgrp);
- fi->fh = pgrp;
-
- if (mixer)
- fuse_reply_open(req, fi);
- else
- fuse_reply_err(req, ENOMEM);
-}
-
-static void mixer_ioctl(fuse_req_t req, int signed_cmd, void *uarg,
- struct fuse_file_info *fi, unsigned int flags,
- const void *in_buf, size_t in_bufsz, size_t out_bufsz)
-{
- struct ossp_mixer *mixer;
-
- mixer = find_mixer(fi->fh);
- if (!mixer) {
- fuse_reply_err(req, EBADF);
- return;
- }
-
- mixer_do_ioctl(req, mixer, signed_cmd, uarg, in_buf, in_bufsz,
- out_bufsz);
-}
-
-static void mixer_release(fuse_req_t req, struct fuse_file_info *fi)
-{
- struct ossp_mixer *mixer;
-
- mixer = find_mixer(fi->fh);
- if (mixer) {
- put_mixer(mixer);
- fuse_reply_err(req, 0);
- } else
- fuse_reply_err(req, EBADF);
-}
-
-
-/***************************************************************************
- * Stream implementation
- */
-
-static int alloc_os(size_t stream_size, size_t mmap_size, pid_t pid, uid_t pgrp,
- uid_t uid, gid_t gid, int cmd_sock,
- const int *notify, struct fuse_session *se,
- struct ossp_stream **osp)
-{
- struct ossp_uid_cnt *tmp_ucnt, *ucnt = NULL;
- struct ossp_stream *os;
- int rc;
-
- assert(stream_size >= sizeof(struct ossp_stream));
- os = calloc(1, stream_size);
- if (!os)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&os->link);
- INIT_LIST_HEAD(&os->pgrp_link);
- INIT_LIST_HEAD(&os->notify_link);
- os->refcnt = 1;
-
- rc = -pthread_mutex_init(&os->cmd_mutex, NULL);
- if (rc)
- goto err_free;
-
- rc = -pthread_mutex_init(&os->mmap_mutex, NULL);
- if (rc)
- goto err_destroy_cmd_mutex;
-
- pthread_mutex_lock(&mutex);
-
- list_for_each_entry(tmp_ucnt, &uid_cnt_list, link)
- if (tmp_ucnt->uid == uid) {
- ucnt = tmp_ucnt;
- break;
- }
- if (!ucnt) {
- rc = -ENOMEM;
- ucnt = calloc(1, sizeof(*ucnt));
- if (!ucnt)
- goto err_unlock;
- ucnt->uid = uid;
- list_add(&ucnt->link, &uid_cnt_list);
- }
-
- rc = -EBUSY;
- if (ucnt->nr_os + 1 > umax_streams)
- goto err_unlock;
-
- /* everything looks fine, allocate id and init stream */
- rc = -EBUSY;
- os->id = find_next_zero_bit(os_id_bitmap, max_streams, 0);
- if (os->id >= max_streams)
- goto err_unlock;
- __set_bit(os->id, os_id_bitmap);
-
- os->cmd_fd = cmd_sock;
- os->notify_tx = notify[1];
- os->notify_rx = notify[0];
- os->pid = pid;
- os->pgrp = pgrp;
- os->uid = uid;
- os->gid = gid;
- if (mmap_size) {
- os->mmap_off = os->id * mmap_size;
- os->mmap_size = mmap_size;
- }
- os->ucnt = ucnt;
- os->se = se;
-
- memset(os->vol, -1, sizeof(os->vol));
- memset(os->vol_set, -1, sizeof(os->vol));
-
- list_add(&os->link, os_tbl_head(os->id));
- list_add(&os->pgrp_link, os_pgrp_tbl_head(os->pgrp));
-
- ucnt->nr_os++;
- *osp = os;
- pthread_mutex_unlock(&mutex);
- return 0;
-
-err_unlock:
- pthread_mutex_unlock(&mutex);
- pthread_mutex_destroy(&os->mmap_mutex);
-err_destroy_cmd_mutex:
- pthread_mutex_destroy(&os->cmd_mutex);
-err_free:
- free(os);
- return rc;
-}
-
-static void shutdown_notification(struct ossp_stream *os)
-{
- struct ossp_notify obituary = { .magic = OSSP_NOTIFY_MAGIC,
- .opcode = OSSP_NOTIFY_OBITUARY };
- ssize_t ret;
-
- /*
- * Shutdown notification for this stream. We politely ask
- * notify_poller to shut the receive side down to avoid racing
- * with it.
- */
- while (os->notify_rx >= 0) {
- ret = write(os->notify_tx, &obituary, sizeof(obituary));
- if (ret <= 0) {
- if (ret == 0)
- warn_os(os, "unexpected EOF on notify_tx");
- else if (errno != EPIPE)
- warn_ose(os, -errno,
- "unexpected error on notify_tx");
- close(os->notify_rx);
- os->notify_rx = -1;
- break;
- }
-
- if (ret != sizeof(obituary))
- warn_os(os, "short transfer on notify_tx");
- pthread_cond_wait(¬ify_poller_kill_wait, &mutex);
- }
-}
-
-static void put_os(struct ossp_stream *os)
-{
- if (!os)
- return;
-
- pthread_mutex_lock(&mutex);
-
- assert(os->refcnt);
- if (--os->refcnt) {
- pthread_mutex_unlock(&mutex);
- return;
- }
-
- os->dead = 1;
- shutdown_notification(os);
-
- dbg0_os(os, "DESTROY");
-
- list_del_init(&os->link);
- list_del_init(&os->pgrp_link);
- list_del_init(&os->notify_link);
- os->ucnt->nr_os--;
-
- pthread_mutex_unlock(&mutex);
-
- close(os->cmd_fd);
- close(os->notify_tx);
- put_mixer(os->mixer);
- pthread_mutex_destroy(&os->cmd_mutex);
- pthread_mutex_destroy(&os->mmap_mutex);
-
- pthread_mutex_lock(&mutex);
- dbg1_os(os, "stream dead, requesting reaping");
- list_add_tail(&os->link, &slave_corpse_list);
- pthread_cond_signal(&slave_reaper_wait);
- pthread_mutex_unlock(&mutex);
-}
-
-static void set_extra_env(pid_t pid)
-{
- char procenviron[32];
- const int step = 1024;
- char *data = malloc(step + 1);
- int ofs = 0;
- int fd;
- int ret;
-
- if (!data)
- return;
-
- sprintf(procenviron, "/proc/%d/environ", pid);
- fd = open(procenviron, O_RDONLY);
- if (fd < 0)
- return;
-
- /*
- * There should really be a 'read whole file to a newly allocated
- * buffer' function.
- */
- while ((ret = read(fd, data + ofs, step)) > 0) {
- char *newdata;
- ofs += ret;
- newdata = realloc(data, ofs + step + 1);
- if (!newdata) {
- ret = -1;
- break;
- }
- data = newdata;
- }
- if (ret == 0) {
- char *ptr = data;
- /* Append the extra 0 for end condition */
- data[ofs] = 0;
-
- while ((ret = strlen(ptr)) > 0) {
- /*
- * Copy all PULSE variables and DISPLAY so that
- * ssh -X remotehost 'mplayer -ao oss' will work
- */
- if (!strncmp(ptr, "DISPLAY=", 8) ||
- !strncmp(ptr, "PULSE_", 6))
- putenv(ptr);
- ptr += ret + 1;
- }
- }
-
- free(data);
- close(fd);
-}
-
-static int create_os(const char *slave_path,
- size_t stream_size, size_t mmap_size,
- pid_t pid, pid_t pgrp, uid_t uid, gid_t gid,
- struct fuse_session *se, struct ossp_stream **osp)
-{
- static pthread_mutex_t create_mutex = PTHREAD_MUTEX_INITIALIZER;
- int cmd_sock[2] = { -1, -1 };
- int notify_sock[2] = { -1, -1 };
- struct ossp_stream *os = NULL;
- struct epoll_event ev = { };
- int i, rc;
-
- /*
- * Only one thread can be creating a stream. This is to avoid
- * leaking unwanted fds into slaves.
- */
- pthread_mutex_lock(&create_mutex);
-
- /* prepare communication channels */
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, cmd_sock) ||
- socketpair(AF_UNIX, SOCK_STREAM, 0, notify_sock)) {
- rc = -errno;
- warn_e(rc, "failed to create slave command channel");
- goto close_all;
- }
-
- if (fcntl(notify_sock[0], F_SETFL, O_NONBLOCK) < 0) {
- rc = -errno;
- warn_e(rc, "failed to set NONBLOCK on notify sock");
- goto close_all;
- }
-
- /*
- * Alloc stream which will be responsible for all server side
- * resources from now on.
- */
- rc = alloc_os(stream_size, mmap_size, pid, pgrp, uid, gid, cmd_sock[0],
- notify_sock, se, &os);
- if (rc) {
- warn_e(rc, "failed to allocate stream for %d", pid);
- goto close_all;
- }
-
- rc = -ENOMEM;
- os->mixer = get_mixer(pgrp);
- if (!os->mixer)
- goto put_os;
-
- /*
- * Register notification. If successful, notify_poller has
- * custody of notify_rx fd.
- */
- pthread_mutex_lock(&mutex);
- list_add(&os->notify_link, os_notify_tbl_head(os->notify_rx));
- pthread_mutex_unlock(&mutex);
-
- ev.events = EPOLLIN;
- ev.data.fd = notify_sock[0];
- if (epoll_ctl(notify_epfd, EPOLL_CTL_ADD, notify_sock[0], &ev)) {
- /*
- * Without poller watching this notify sock, poller
- * shutdown sequence in shutdown_notification() can't
- * be used. Kill notification rx manually.
- */
- rc = -errno;
- warn_ose(os, rc, "failed to add notify epoll");
- close(os->notify_rx);
- os->notify_rx = -1;
- goto put_os;
- }
-
- /* start slave */
- os->slave_pid = fork();
- if (os->slave_pid < 0) {
- rc = -errno;
- warn_ose(os, rc, "failed to fork slave");
- goto put_os;
- }
-
- if (os->slave_pid == 0) {
- /* child */
- char id_str[2][16], fd_str[3][16];
- char mmap_off_str[32], mmap_size_str[32];
- char log_str[16], slave_path_copy[PATH_MAX];
- char *argv[] = { slave_path_copy, "-u", id_str[0],
- "-g", id_str[1], "-c", fd_str[0],
- "-n", fd_str[1], "-m", fd_str[2],
- "-o", mmap_off_str, "-s", mmap_size_str,
- "-l", log_str, NULL, NULL };
- struct passwd *pwd;
-
- /* drop stuff we don't need */
- if (close(cmd_sock[0]) || close(notify_sock[0]))
- fatal_e(-errno, "failed to close server pipe fds");
-
-#ifdef OSSP_MMAP
- if (!mmap_size)
- close(fuse_mmap_fd(se));
-#endif
-
- clearenv();
- pwd = getpwuid(os->uid);
- if (pwd) {
- setenv("LOGNAME", pwd->pw_name, 1);
- setenv("USER", pwd->pw_name, 1);
- setenv("HOME", pwd->pw_dir, 1);
- }
- /* Set extra environment variables from the caller */
- set_extra_env(pid);
-
- /* prep and exec */
- slave_path_copy[sizeof(slave_path_copy) - 1] = '\0';
- strncpy(slave_path_copy, slave_path, sizeof(slave_path_copy) - 1);
- if (slave_path_copy[sizeof(slave_path_copy) - 1] != '\0') {
- rc = -errno;
- err_ose(os, rc, "slave path too long");
- goto child_fail;
- }
-
- snprintf(id_str[0], sizeof(id_str[0]), "%d", os->uid);
- snprintf(id_str[1], sizeof(id_str[0]), "%d", os->gid);
- snprintf(fd_str[0], sizeof(fd_str[0]), "%d", cmd_sock[1]);
- snprintf(fd_str[1], sizeof(fd_str[1]), "%d", notify_sock[1]);
- snprintf(fd_str[2], sizeof(fd_str[2]), "%d",
-#ifdef OSSP_MMAP
- mmap_size ? fuse_mmap_fd(se) :
-#endif
- -1);
- snprintf(mmap_off_str, sizeof(mmap_off_str), "0x%llx",
- (unsigned long long)os->mmap_off);
- snprintf(mmap_size_str, sizeof(mmap_size_str), "0x%zx",
- mmap_size);
- snprintf(log_str, sizeof(log_str), "%d", ossp_log_level);
- if (ossp_log_timestamp)
- argv[ARRAY_SIZE(argv) - 2] = "-t";
-
- execv(slave_path, argv);
- rc = -errno;
- err_ose(os, rc, "execv failed for <%d>", pid);
- child_fail:
- _exit(1);
- }
-
- /* turn on CLOEXEC on all server side fds */
- if (fcntl(os->cmd_fd, F_SETFD, FD_CLOEXEC) < 0 ||
- fcntl(os->notify_tx, F_SETFD, FD_CLOEXEC) < 0 ||
- fcntl(os->notify_rx, F_SETFD, FD_CLOEXEC) < 0) {
- rc = -errno;
- err_ose(os, rc, "failed to set CLOEXEC on server side fds");
- goto put_os;
- }
-
- dbg0_os(os, "CREATE slave=%d %s", os->slave_pid, slave_path);
- dbg0_os(os, " client=%d cmd=%d:%d notify=%d:%d mmap=%d:0x%llx:%zu",
- pid, cmd_sock[0], cmd_sock[1], notify_sock[0], notify_sock[1],
-#ifdef OSSP_MMAP
- os->mmap_size ? fuse_mmap_fd(se) :
-#endif
- -1,
- (unsigned long long)os->mmap_off, os->mmap_size);
-
- *osp = os;
- rc = 0;
- goto close_client_fds;
-
-put_os:
- put_os(os);
-close_client_fds:
- close(cmd_sock[1]);
- pthread_mutex_unlock(&create_mutex);
- return rc;
-
-close_all:
- for (i = 0; i < 2; i++) {
- close(cmd_sock[i]);
- close(notify_sock[i]);
- }
- pthread_mutex_unlock(&create_mutex);
- return rc;
-}
-
-static void dsp_open_common(fuse_req_t req, struct fuse_file_info *fi,
- struct fuse_session *se)
-{
- const struct fuse_ctx *fuse_ctx = fuse_req_ctx(req);
- struct ossp_dsp_open_arg arg = { };
- struct ossp_stream *os = NULL;
- struct ossp_mixer *mixer;
- struct ossp_dsp_stream *dsps;
- struct ossp_mixer_cmd mxcmd;
- pid_t pgrp;
- ssize_t ret;
-
- ret = get_proc_self_info(fuse_ctx->pid, &pgrp, NULL, 0);
- if (ret) {
- err_e(ret, "get_proc_self_info(%d) failed", fuse_ctx->pid);
- goto err;
- }
-
- ret = create_os(dsp_slave_path, sizeof(*dsps), DSPS_MMAP_SIZE,
- fuse_ctx->pid, pgrp, fuse_ctx->uid, fuse_ctx->gid,
- se, &os);
- if (ret)
- goto err;
- dsps = os_to_dsps(os);
- mixer = os->mixer;
-
- switch (fi->flags & O_ACCMODE) {
- case O_WRONLY:
- dsps->rw |= 1 << PLAY;
- break;
- case O_RDONLY:
- dsps->rw |= 1 << REC;
- break;
- case O_RDWR:
- dsps->rw |= (1 << PLAY) | (1 << REC);
- break;
- default:
- assert(0);
- }
-
- arg.flags = fi->flags;
- arg.opener_pid = os->pid;
- ret = exec_simple_cmd(&dsps->os, OSSP_DSP_OPEN, &arg, NULL);
- if (ret < 0) {
- put_os(os);
- goto err;
- }
-
- memcpy(os->vol, mixer->vol, sizeof(os->vol));
- if (os->vol[PLAY][0] >= 0 || os->vol[REC][0] >= 0) {
- init_mixer_cmd(&mxcmd, mixer);
- memcpy(mxcmd.set.vol, os->vol, sizeof(os->vol));
- exec_mixer_cmd(&mxcmd, os);
- finish_mixer_cmd(&mxcmd);
- }
-
- fi->direct_io = 1;
- fi->nonseekable = 1;
- fi->fh = os->id;
-
- fuse_reply_open(req, fi);
- return;
-
-err:
- fuse_reply_err(req, -ret);
-}
-
-static void dsp_open(fuse_req_t req, struct fuse_file_info *fi)
-{
- dsp_open_common(req, fi, dsp_se);
-}
-
-static void adsp_open(fuse_req_t req, struct fuse_file_info *fi)
-{
- dsp_open_common(req, fi, adsp_se);
-}
-
-static void dsp_release(fuse_req_t req, struct fuse_file_info *fi)
-{
- struct ossp_stream *os;
-
- os = find_os(fi->fh);
- if (os) {
- put_os(os);
- fuse_reply_err(req, 0);
- } else
- fuse_reply_err(req, EBADF);
-}
-
-static void dsp_read(fuse_req_t req, size_t size, off_t off,
- struct fuse_file_info *fi)
-{
- struct ossp_dsp_rw_arg arg = { };
- struct ossp_stream *os;
- struct ossp_dsp_stream *dsps;
- void *buf = NULL;
- ssize_t ret;
-
- ret = -EBADF;
- os = find_os(fi->fh);
- if (!os)
- goto out;
- dsps = os_to_dsps(os);
-
- ret = -EINVAL;
- if (!(dsps->rw & (1 << REC)))
- goto out;
-
- ret = -ENXIO;
- if (dsps->mmapped)
- goto out;
-
- ret = -ENOMEM;
- buf = malloc(size);
- if (!buf)
- goto out;
-
- arg.nonblock = (fi->flags & O_NONBLOCK) || dsps->nonblock;
-
- ret = exec_cmd(os, OSSP_DSP_READ, &arg, sizeof(arg),
- NULL, 0, NULL, 0, buf, &size, -1);
-out:
- if (ret >= 0)
- fuse_reply_buf(req, buf, size);
- else
- fuse_reply_err(req, -ret);
-
- free(buf);
-}
-
-static void dsp_write(fuse_req_t req, const char *buf, size_t size, off_t off,
- struct fuse_file_info *fi)
-{
- struct ossp_dsp_rw_arg arg = { };
- struct ossp_stream *os;
- struct ossp_dsp_stream *dsps;
- ssize_t ret;
-
- ret = -EBADF;
- os = find_os(fi->fh);
- if (!os)
- goto out;
- dsps = os_to_dsps(os);
-
- ret = -EINVAL;
- if (!(dsps->rw & (1 << PLAY)))
- goto out;
-
- ret = -ENXIO;
- if (dsps->mmapped)
- goto out;
-
- arg.nonblock = (fi->flags & O_NONBLOCK) || dsps->nonblock;
-
- ret = exec_cmd(os, OSSP_DSP_WRITE, &arg, sizeof(arg),
- buf, size, NULL, 0, NULL, NULL, -1);
-out:
- if (ret >= 0)
- fuse_reply_write(req, ret);
- else
- fuse_reply_err(req, -ret);
-}
-
-static void dsp_poll(fuse_req_t req, struct fuse_file_info *fi,
- struct fuse_pollhandle *ph)
-{
- int notify = ph != NULL;
- unsigned revents = 0;
- struct ossp_stream *os;
- ssize_t ret;
-
- ret = -EBADF;
- os = find_os(fi->fh);
- if (!os)
- goto out;
-
- if (ph) {
- pthread_mutex_lock(&mutex);
- if (os->ph)
- fuse_pollhandle_destroy(os->ph);
- os->ph = ph;
- pthread_mutex_unlock(&mutex);
- }
-
- ret = exec_simple_cmd(os, OSSP_DSP_POLL, ¬ify, &revents);
-out:
- if (ret >= 0)
- fuse_reply_poll(req, revents);
- else
- fuse_reply_err(req, -ret);
-}
-
-static void dsp_ioctl(fuse_req_t req, int signed_cmd, void *uarg,
- struct fuse_file_info *fi, unsigned int flags,
- const void *in_buf, size_t in_bufsz, size_t out_bufsz)
-{
- /* some ioctl constants are long and has the highest bit set */
- unsigned cmd = signed_cmd;
- struct ossp_stream *os;
- struct ossp_dsp_stream *dsps;
- enum ossp_opcode op;
- ssize_t ret;
- int i;
-
- ret = -EBADF;
- os = find_os(fi->fh);
- if (!os)
- goto err;
- dsps = os_to_dsps(os);
-
- /* mixer commands are allowed on DSP devices */
- if (((cmd >> 8) & 0xff) == 'M') {
- mixer_do_ioctl(req, os->mixer, cmd, uarg, in_buf, in_bufsz,
- out_bufsz);
- return;
- }
-
- /* and the rest */
- switch (cmd) {
- case OSS_GETVERSION:
- i = SNDRV_OSS_VERSION;
- PREP_UARG(NULL, &i);
- IOCTL_RETURN(0, &i);
-
- case SNDCTL_DSP_GETCAPS:
- i = DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
-#ifdef OSSP_MMAP
- DSP_CAP_MMAP |
-#endif
- DSP_CAP_MULTI;
- PREP_UARG(NULL, &i);
- IOCTL_RETURN(0, &i);
-
- case SNDCTL_DSP_NONBLOCK:
- dsps->nonblock = 1;
- ret = 0;
- IOCTL_RETURN(0, NULL);
-
- case SNDCTL_DSP_RESET: op = OSSP_DSP_RESET; goto nd;
- case SNDCTL_DSP_SYNC: op = OSSP_DSP_SYNC; goto nd;
- case SNDCTL_DSP_POST: op = OSSP_DSP_POST; goto nd;
- nd:
- ret = exec_simple_cmd(&dsps->os, op, NULL, NULL);
- if (ret)
- goto err;
- IOCTL_RETURN(0, NULL);
-
- case SOUND_PCM_READ_RATE: op = OSSP_DSP_GET_RATE; goto ri;
- case SOUND_PCM_READ_BITS: op = OSSP_DSP_GET_FORMAT; goto ri;
- case SOUND_PCM_READ_CHANNELS: op = OSSP_DSP_GET_CHANNELS; goto ri;
- case SNDCTL_DSP_GETBLKSIZE: op = OSSP_DSP_GET_BLKSIZE; goto ri;
- case SNDCTL_DSP_GETFMTS: op = OSSP_DSP_GET_FORMATS; goto ri;
- case SNDCTL_DSP_GETTRIGGER: op = OSSP_DSP_GET_TRIGGER; goto ri;
- ri:
- PREP_UARG(NULL, &i);
- ret = exec_simple_cmd(&dsps->os, op, NULL, &i);
- if (ret)
- goto err;
- IOCTL_RETURN(0, &i);
-
- case SNDCTL_DSP_SPEED: op = OSSP_DSP_SET_RATE; goto wi;
- case SNDCTL_DSP_SETFMT: op = OSSP_DSP_SET_FORMAT; goto wi;
- case SNDCTL_DSP_CHANNELS: op = OSSP_DSP_SET_CHANNELS; goto wi;
- case SNDCTL_DSP_SUBDIVIDE: op = OSSP_DSP_SET_SUBDIVISION; goto wi;
- wi:
- PREP_UARG(&i, &i);
- ret = exec_simple_cmd(&dsps->os, op, &i, &i);
- if (ret)
- goto err;
- IOCTL_RETURN(0, &i);
-
- case SNDCTL_DSP_STEREO:
- PREP_UARG(NULL, &i);
- i = 2;
- ret = exec_simple_cmd(&dsps->os, OSSP_DSP_SET_CHANNELS, &i, &i);
- i--;
- if (ret)
- goto err;
- IOCTL_RETURN(0, &i);
-
- case SNDCTL_DSP_SETFRAGMENT:
- PREP_UARG(&i, NULL);
- ret = exec_simple_cmd(&dsps->os,
- OSSP_DSP_SET_FRAGMENT, &i, NULL);
- if (ret)
- goto err;
- IOCTL_RETURN(0, NULL);
-
- case SNDCTL_DSP_SETTRIGGER:
- PREP_UARG(&i, NULL);
- ret = exec_simple_cmd(&dsps->os,
- OSSP_DSP_SET_TRIGGER, &i, NULL);
- if (ret)
- goto err;
- IOCTL_RETURN(0, NULL);
-
- case SNDCTL_DSP_GETOSPACE:
- case SNDCTL_DSP_GETISPACE: {
- struct audio_buf_info info;
-
- ret = -EINVAL;
- if (cmd == SNDCTL_DSP_GETOSPACE) {
- if (!(dsps->rw & (1 << PLAY)))
- goto err;
- op = OSSP_DSP_GET_OSPACE;
- } else {
- if (!(dsps->rw & (1 << REC)))
- goto err;
- op = OSSP_DSP_GET_ISPACE;
- }
-
- PREP_UARG(NULL, &info);
- ret = exec_simple_cmd(&dsps->os, op, NULL, &info);
- if (ret)
- goto err;
- IOCTL_RETURN(0, &info);
- }
-
- case SNDCTL_DSP_GETOPTR:
- case SNDCTL_DSP_GETIPTR: {
- struct count_info info;
-
- op = cmd == SNDCTL_DSP_GETOPTR ? OSSP_DSP_GET_OPTR
- : OSSP_DSP_GET_IPTR;
- PREP_UARG(NULL, &info);
- ret = exec_simple_cmd(&dsps->os, op, NULL, &info);
- if (ret)
- goto err;
- IOCTL_RETURN(0, &info);
- }
-
- case SNDCTL_DSP_GETODELAY:
- PREP_UARG(NULL, &i);
- i = 0;
- ret = exec_simple_cmd(&dsps->os, OSSP_DSP_GET_ODELAY, NULL, &i);
- IOCTL_RETURN(ret, &i); /* always copy out result, 0 on err */
-
- case SOUND_PCM_WRITE_FILTER:
- case SOUND_PCM_READ_FILTER:
- ret = -EIO;
- goto err;
-
- case SNDCTL_DSP_MAPINBUF:
- case SNDCTL_DSP_MAPOUTBUF:
- ret = -EINVAL;
- goto err;
-
- case SNDCTL_DSP_SETSYNCRO:
- case SNDCTL_DSP_SETDUPLEX:
- case SNDCTL_DSP_PROFILE:
- IOCTL_RETURN(0, NULL);
-
- default:
- warn_os(os, "unknown ioctl 0x%x", cmd);
- ret = -EINVAL;
- goto err;
- }
- assert(0); /* control shouldn't reach here */
-err:
- fuse_reply_err(req, -ret);
-}
-
-#ifdef OSSP_MMAP
-static int dsp_mmap_dir(int prot)
-{
- if (!(prot & PROT_WRITE))
- return REC;
- return PLAY;
-}
-
-static void dsp_mmap(fuse_req_t req, void *addr, size_t len, int prot,
- int flags, off_t offset, struct fuse_file_info *fi,
- uint64_t mh)
-{
- int dir = dsp_mmap_dir(prot);
- struct ossp_dsp_mmap_arg arg = { };
- struct ossp_stream *os;
- struct ossp_dsp_stream *dsps;
- ssize_t ret;
-
- os = find_os(fi->fh);
- if (!os) {
- fuse_reply_err(req, EBADF);
- return;
- }
- dsps = os_to_dsps(os);
-
- if (!os->mmap_off || len > os->mmap_size / 2) {
- fuse_reply_err(req, EINVAL);
- return;
- }
-
- pthread_mutex_lock(&os->mmap_mutex);
-
- ret = -EBUSY;
- if (dsps->mmapped & (1 << dir))
- goto out_unlock;
-
- arg.dir = dir;
- arg.size = len;
-
- ret = exec_simple_cmd(os, OSSP_DSP_MMAP, &arg, NULL);
- if (ret == 0)
- dsps->mmapped |= 1 << dir;
-
-out_unlock:
- pthread_mutex_unlock(&os->mmap_mutex);
-
- if (ret == 0)
- fuse_reply_mmap(req, os->mmap_off + dir * os->mmap_size / 2, 0);
- else
- fuse_reply_err(req, -ret);
-}
-
-static void dsp_munmap(fuse_req_t req, size_t len, struct fuse_file_info *fi,
- off_t offset, uint64_t mh)
-{
- struct ossp_stream *os;
- struct ossp_dsp_stream *dsps;
- int dir, rc;
-
- os = find_os(fi->fh);
- if (!os)
- goto out;
- dsps = os_to_dsps(os);
-
- pthread_mutex_lock(&os->mmap_mutex);
-
- for (dir = 0; dir < 2; dir++)
- if (offset == os->mmap_off + dir * os->mmap_size / 2)
- break;
- if (dir == 2 || len > os->mmap_size / 2) {
- warn_os(os, "invalid munmap request "
- "offset=%llu len=%zu mmapped=0x%x",
- (unsigned long long)offset, len, dsps->mmapped);
- goto out_unlock;
- }
-
- rc = exec_simple_cmd(os, OSSP_DSP_MUNMAP, &dir, NULL);
- if (rc)
- warn_ose(os, rc, "MUNMAP failed for dir=%d", dir);
-
- dsps->mmapped &= ~(1 << dir);
-
-out_unlock:
- pthread_mutex_unlock(&os->mmap_mutex);
-out:
- fuse_reply_none(req);
-}
-#endif
-
-
-/***************************************************************************
- * Notify poller
- */
-
-static void *notify_poller(void *arg)
-{
- struct epoll_event events[1024];
- int i, nfds;
-
-repeat:
- nfds = epoll_wait(notify_epfd, events, ARRAY_SIZE(events), -1);
- for (i = 0; i < nfds; i++) {
- int do_notify = 0;
- struct ossp_stream *os;
- struct ossp_notify notify;
- ssize_t ret;
-
- os = find_os_by_notify_rx(events[i].data.fd);
- if (!os) {
- err("can't find stream for notify_rx fd %d",
- events[i].data.fd);
- epoll_ctl(notify_epfd, EPOLL_CTL_DEL, events[i].data.fd,
- NULL);
- /* we don't know what's going on, don't close the fd */
- continue;
- }
-
- while ((ret = read(os->notify_rx,
- ¬ify, sizeof(notify))) > 0) {
- if (os->dead)
- continue;
- if (ret != sizeof(notify)) {
- warn_os(os, "short read on notify_rx (%zu, "
- "expected %zu), killing the stream",
- ret, sizeof(notify));
- os->dead = 1;
- break;
- }
- if (notify.magic != OSSP_NOTIFY_MAGIC) {
- warn_os(os, "invalid magic on notification, "
- "killing the stream");
- os->dead = 1;
- break;
- }
-
- if (notify.opcode >= OSSP_NR_NOTIFY_OPCODES)
- goto unknown;
-
- dbg1_os(os, "NOTIFY %s", ossp_notify_str[notify.opcode]);
-
- switch (notify.opcode) {
- case OSSP_NOTIFY_POLL:
- do_notify = 1;
- break;
- case OSSP_NOTIFY_OBITUARY:
- os->dead = 1;
- break;
- case OSSP_NOTIFY_VOLCHG:
- pthread_mutex_lock(&mixer_mutex);
- os->mixer->modify_counter++;
- pthread_mutex_unlock(&mixer_mutex);
- break;
- default:
- unknown:
- warn_os(os, "unknown notification %d",
- notify.opcode);
- }
- }
- if (ret == 0)
- os->dead = 1;
- else if (ret < 0 && errno != EAGAIN) {
- warn_ose(os, -errno, "read fail on notify fd");
- os->dead = 1;
- }
-
- if (!do_notify && !os->dead)
- continue;
-
- pthread_mutex_lock(&mutex);
-
- if (os->ph) {
- fuse_lowlevel_notify_poll(os->ph);
- fuse_pollhandle_destroy(os->ph);
- os->ph = NULL;
- }
-
- if (os->dead) {
- dbg0_os(os, "removing %d from notify poll list",
- os->notify_rx);
- epoll_ctl(notify_epfd, EPOLL_CTL_DEL, os->notify_rx,
- NULL);
- close(os->notify_rx);
- os->notify_rx = -1;
- pthread_cond_broadcast(¬ify_poller_kill_wait);
- }
-
- pthread_mutex_unlock(&mutex);
- }
- goto repeat;
-}
-
-
-/***************************************************************************
- * Slave corpse reaper
- */
-
-static void *slave_reaper(void *arg)
-{
- struct ossp_stream *os;
- int status;
- pid_t pid;
-
- pthread_mutex_lock(&mutex);
-repeat:
- while (list_empty(&slave_corpse_list))
- pthread_cond_wait(&slave_reaper_wait, &mutex);
-
- os = list_first_entry(&slave_corpse_list, struct ossp_stream, link);
- list_del_init(&os->link);
-
- pthread_mutex_unlock(&mutex);
-
- do {
- pid = waitpid(os->slave_pid, &status, 0);
- } while (pid < 0 && errno == EINTR);
-
- if (pid < 0) {
- if (errno == ECHILD)
- warn_ose(os, -errno, "slave %d already gone?",
- os->slave_pid);
- else
- fatal_e(-errno, "waitpid(%d) failed", os->slave_pid);
- }
-
- pthread_mutex_lock(&mutex);
-
- dbg1_os(os, "slave %d reaped", os->slave_pid);
- __clear_bit(os->id, os_id_bitmap);
- free(os);
-
- goto repeat;
-}
-
-
-/***************************************************************************
- * Stuff to bind and start everything
- */
-
-static void ossp_daemonize(void)
-{
- int fd, pfd[2];
- pid_t pid;
- ssize_t ret;
- int err;
-
- fd = open("/dev/null", O_RDWR);
- if (fd >= 0) {
- dup2(fd, 0);
- dup2(fd, 1);
- dup2(fd, 2);
- if (fd > 2)
- close(fd);
- }
-
- if (pipe(pfd))
- fatal_e(-errno, "failed to create pipe for init wait");
-
- if (fcntl(pfd[0], F_SETFD, FD_CLOEXEC) < 0 ||
- fcntl(pfd[1], F_SETFD, FD_CLOEXEC) < 0)
- fatal_e(-errno, "failed to set CLOEXEC on init wait pipe");
-
- pid = fork();
- if (pid < 0)
- fatal_e(-errno, "failed to fork for daemon");
-
- if (pid == 0) {
- close(pfd[0]);
- init_wait_fd = pfd[1];
-
- /* be evil, my child */
- chdir("/");
- setsid();
- return;
- }
-
- /* wait for init completion and pass over success indication */
- close(pfd[1]);
-
- do {
- ret = read(pfd[0], &err, sizeof(err));
- } while (ret < 0 && errno == EINTR);
-
- if (ret == sizeof(err) && err == 0)
- exit(0);
-
- fatal("daemon init failed ret=%zd err=%d", ret, err);
- exit(1);
-}
-
-static void ossp_init_done(void *userdata)
-{
- /* init complete, notify parent if it's waiting */
- if (init_wait_fd >= 0) {
- ssize_t ret;
- int err = 0;
-
- ret = write(init_wait_fd, &err, sizeof(err));
- if (ret != sizeof(err))
- fatal_e(-errno, "failed to notify init completion, "
- "ret=%zd", ret);
- close(init_wait_fd);
- init_wait_fd = -1;
- }
-}
-
-static const struct cuse_lowlevel_ops mixer_ops = {
- .open = mixer_open,
- .release = mixer_release,
- .ioctl = mixer_ioctl,
-};
-
-static const struct cuse_lowlevel_ops dsp_ops = {
- .init_done = ossp_init_done,
- .open = dsp_open,
- .release = dsp_release,
- .read = dsp_read,
- .write = dsp_write,
- .poll = dsp_poll,
- .ioctl = dsp_ioctl,
-#ifdef OSSP_MMAP
- .mmap = dsp_mmap,
- .munmap = dsp_munmap,
-#endif
-};
-
-static const struct cuse_lowlevel_ops adsp_ops = {
- .open = adsp_open,
- .release = dsp_release,
- .read = dsp_read,
- .write = dsp_write,
- .poll = dsp_poll,
- .ioctl = dsp_ioctl,
-#ifdef OSSP_MMAP
- .mmap = dsp_mmap,
- .munmap = dsp_munmap,
-#endif
-};
-
-static const char *usage =
-"usage: osspd [options]\n"
-"\n"
-"options:\n"
-" --help print this help message\n"
-" --dsp=NAME DSP device name (default dsp)\n"
-" --dsp-maj=MAJ DSP device major number (default 14)\n"
-" --dsp-min=MIN DSP device minor number (default 3)\n"
-" --adsp=NAME Aux DSP device name (default adsp, blank to disable)\n"
-" --adsp-maj=MAJ Aux DSP device major number (default 14)\n"
-" --adsp-min=MIN Aux DSP device minor number (default 12)\n"
-" --mixer=NAME mixer device name (default mixer, blank to disable)\n"
-" --mixer-maj=MAJ mixer device major number (default 14)\n"
-" --mixer-min=MIN mixer device minor number (default 0)\n"
-" --max=MAX maximum number of open streams (default 256)\n"
-" --umax=MAX maximum number of open streams per UID (default --max)\n"
-" --exit-on-idle exit if idle\n"
-" --dsp-slave=PATH DSP slave (default ossp-padsp in the same dir)\n"
-" --log=LEVEL log level (0..6)\n"
-" --timestamp timestamp log messages\n"
-" -v increase verbosity, can be specified multiple times\n"
-" -f Run in foreground (don't daemonize)\n"
-"\n";
-
-struct ossp_param {
- char *dsp_name;
- unsigned dsp_major;
- unsigned dsp_minor;
- char *adsp_name;
- unsigned adsp_major;
- unsigned adsp_minor;
- char *mixer_name;
- unsigned mixer_major;
- unsigned mixer_minor;
- unsigned max_streams;
- unsigned umax_streams;
- char *dsp_slave_path;
- unsigned log_level;
- int exit_on_idle;
- int timestamp;
- int fg;
- int help;
-};
-
-#define OSSP_OPT(t, p) { t, offsetof(struct ossp_param, p), 1 }
-
-static const struct fuse_opt ossp_opts[] = {
- OSSP_OPT("--dsp=%s", dsp_name),
- OSSP_OPT("--dsp-maj=%u", dsp_major),
- OSSP_OPT("--dsp-min=%u", dsp_minor),
- OSSP_OPT("--adsp=%s", adsp_name),
- OSSP_OPT("--adsp-maj=%u", adsp_major),
- OSSP_OPT("--adsp-min=%u", adsp_minor),
- OSSP_OPT("--mixer=%s", mixer_name),
- OSSP_OPT("--mixer-maj=%u", mixer_major),
- OSSP_OPT("--mixer-min=%u", mixer_minor),
- OSSP_OPT("--max=%u", max_streams),
- OSSP_OPT("--umax=%u", umax_streams),
- OSSP_OPT("--exit-on-idle", exit_on_idle),
- OSSP_OPT("--dsp-slave=%s", dsp_slave_path),
- OSSP_OPT("--timestamp", timestamp),
- OSSP_OPT("--log=%u", log_level),
- OSSP_OPT("-f", fg),
- FUSE_OPT_KEY("-h", 0),
- FUSE_OPT_KEY("--help", 0),
- FUSE_OPT_KEY("-v", 1),
- FUSE_OPT_END
-};
-
-static struct fuse_session *setup_ossp_cuse(const struct cuse_lowlevel_ops *ops,
- const char *name, int major,
- int minor, int argc, char **argv)
-{
- char name_buf[128];
- const char *bufp = name_buf;
- struct cuse_info ci = { .dev_major = major, .dev_minor = minor,
- .dev_info_argc = 1, .dev_info_argv = &bufp,
- .flags = CUSE_UNRESTRICTED_IOCTL };
- struct fuse_session *se;
- int fd;
-
- snprintf(name_buf, sizeof(name_buf), "DEVNAME=%s", name);
-
- se = cuse_lowlevel_setup(argc, argv, &ci, ops, NULL, NULL);
- if (!se) {
- err("failed to setup %s CUSE", name);
- return NULL;
- }
-
- fd = fuse_chan_fd(fuse_session_next_chan(se, NULL));
- if (
-#ifdef OSSP_MMAP
- fd != fuse_mmap_fd(se) &&
-#endif
- fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
- err_e(-errno, "failed to set CLOEXEC on %s CUSE fd", name);
- cuse_lowlevel_teardown(se);
- return NULL;
- }
-
- return se;
-}
-
-static void *cuse_worker(void *arg)
-{
- struct fuse_session *se = arg;
- int rc;
-
- rc = fuse_session_loop_mt(se);
- cuse_lowlevel_teardown(se);
-
- return (void *)(unsigned long)rc;
-}
-
-static int process_arg(void *data, const char *arg, int key,
- struct fuse_args *outargs)
-{
- struct ossp_param *param = data;
-
- switch (key) {
- case 0:
- fprintf(stderr, usage);
- param->help = 1;
- return 0;
- case 1:
- param->log_level++;
- return 0;
- }
- return 1;
-}
-
-int main(int argc, char **argv)
-{
- static struct ossp_param param = {
- .dsp_name = DFL_DSP_NAME,
- .dsp_major = DFL_DSP_MAJOR, .dsp_minor = DFL_DSP_MINOR,
- .adsp_name = DFL_ADSP_NAME,
- .adsp_major = DFL_ADSP_MAJOR, .adsp_minor = DFL_ADSP_MINOR,
- .mixer_name = DFL_MIXER_NAME,
- .mixer_major = DFL_MIXER_MAJOR, .mixer_minor = DFL_MIXER_MINOR,
- .max_streams = DFL_MAX_STREAMS,
- };
- struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
- char path_buf[PATH_MAX], *dir;
- char adsp_buf[64] = "", mixer_buf[64] = "";
- struct sigaction sa;
- struct stat stat_buf;
- ssize_t ret;
- unsigned u;
-
- snprintf(ossp_log_name, sizeof(ossp_log_name), "osspd");
- param.log_level = ossp_log_level;
-
- if (fuse_opt_parse(&args, ¶m, ossp_opts, process_arg))
- fatal("failed to parse arguments");
-
- if (param.help)
- return 0;
-
- max_streams = param.max_streams;
- hashtbl_size = max_streams / 2 + 13;
-
- umax_streams = max_streams;
- if (param.umax_streams)
- umax_streams = param.umax_streams;
- if (param.log_level > OSSP_LOG_MAX)
- param.log_level = OSSP_LOG_MAX;
- if (!param.fg)
- param.log_level = -param.log_level;
- ossp_log_level = param.log_level;
- ossp_log_timestamp = param.timestamp;
-
- if (!param.fg)
- ossp_daemonize();
-
- /* daemonization already handled, prevent forking inside FUSE */
- fuse_opt_add_arg(&args, "-f");
-
- info("OSS Proxy v%s (C) 2008-2010 by Tejun Heo <teheo@suse.de>",
- OSSP_VERSION);
-
- /* ignore stupid SIGPIPEs */
- memset(&sa, 0, sizeof(sa));
- sa.sa_handler = SIG_IGN;
- if (sigaction(SIGPIPE, &sa, NULL))
- fatal_e(-errno, "failed to ignore SIGPIPE");
-
- /* determine slave path and check for availability */
- ret = readlink("/proc/self/exe", path_buf, PATH_MAX - 1);
- if (ret < 0)
- fatal_e(-errno, "failed to determine executable path");
- path_buf[ret] = '\0';
- dir = dirname(path_buf);
-
- if (param.dsp_slave_path) {
- strncpy(dsp_slave_path, param.dsp_slave_path, PATH_MAX - 1);
- dsp_slave_path[PATH_MAX - 1] = '\0';
- } else {
- ret = snprintf(dsp_slave_path, PATH_MAX, "%s/%s",
- dir, "ossp-padsp");
- if (ret >= PATH_MAX)
- fatal("dsp slave pathname too long");
- }
-
- if (stat(dsp_slave_path, &stat_buf))
- fatal_e(-errno, "failed to stat %s", dsp_slave_path);
- if (!S_ISREG(stat_buf.st_mode) || !(stat_buf.st_mode & 0444))
- fatal("%s is not executable", dsp_slave_path);
-
- /* allocate tables */
- os_id_bitmap = calloc(BITS_TO_LONGS(max_streams), sizeof(long));
- mixer_tbl = calloc(hashtbl_size, sizeof(mixer_tbl[0]));
- os_tbl = calloc(hashtbl_size, sizeof(os_tbl[0]));
- os_pgrp_tbl = calloc(hashtbl_size, sizeof(os_pgrp_tbl[0]));
- os_notify_tbl = calloc(hashtbl_size, sizeof(os_notify_tbl[0]));
- if (!os_id_bitmap || !mixer_tbl || !os_tbl || !os_pgrp_tbl ||
- !os_notify_tbl)
- fatal("failed to allocate stream hash tables");
- for (u = 0; u < hashtbl_size; u++) {
- INIT_LIST_HEAD(&mixer_tbl[u]);
- INIT_LIST_HEAD(&os_tbl[u]);
- INIT_LIST_HEAD(&os_pgrp_tbl[u]);
- INIT_LIST_HEAD(&os_notify_tbl[u]);
- }
- __set_bit(0, os_id_bitmap); /* don't use id 0 */
-
- /* create mixer delayed reference worker */
- ret = -pthread_create(&mixer_delayed_put_thread, NULL,
- mixer_delayed_put_worker, NULL);
- if (ret)
- fatal_e(ret, "failed to create mixer delayed put worker");
-
- /* if exit_on_idle, touch mixer for pgrp0 */
- exit_on_idle = param.exit_on_idle;
- if (exit_on_idle) {
- struct ossp_mixer *mixer;
-
- mixer = get_mixer(0);
- if (!mixer)
- fatal("failed to touch idle mixer");
- put_mixer(mixer);
- }
-
- /* create notify epoll and kick off watcher thread */
- notify_epfd = epoll_create(max_streams);
- if (notify_epfd < 0)
- fatal_e(-errno, "failed to create notify epoll");
- if (fcntl(notify_epfd, F_SETFD, FD_CLOEXEC) < 0)
- fatal_e(-errno, "failed to set CLOEXEC on notify epfd");
-
- ret = -pthread_create(¬ify_poller_thread, NULL, notify_poller, NULL);
- if (ret)
- fatal_e(ret, "failed to create notify poller thread");
-
- /* create reaper for slave corpses */
- ret = -pthread_create(&slave_reaper_thread, NULL, slave_reaper, NULL);
- if (ret)
- fatal_e(ret, "failed to create slave reaper thread");
-
- /* we're set, let's setup fuse structures */
- if (strlen(param.mixer_name))
- mixer_se = setup_ossp_cuse(&mixer_ops, param.mixer_name,
- param.mixer_major, param.mixer_minor,
- args.argc, args.argv);
- if (strlen(param.adsp_name))
- adsp_se = setup_ossp_cuse(&dsp_ops, param.adsp_name,
- param.adsp_major, param.adsp_minor,
- args.argc, args.argv);
-
- dsp_se = setup_ossp_cuse(&dsp_ops, param.dsp_name,
- param.dsp_major, param.dsp_minor,
- args.argc, args.argv);
- if (!dsp_se)
- fatal("can't create dsp, giving up");
-
- if (mixer_se)
- snprintf(mixer_buf, sizeof(mixer_buf), ", %s (%d:%d)",
- param.mixer_name, param.mixer_major, param.mixer_minor);
- if (adsp_se)
- snprintf(adsp_buf, sizeof(adsp_buf), ", %s (%d:%d)",
- param.adsp_name, param.adsp_major, param.adsp_minor);
-
- info("Creating %s (%d:%d)%s%s", param.dsp_name, param.dsp_major,
- param.dsp_minor, adsp_buf, mixer_buf);
-
- /* start threads for mixer and adsp */
- if (mixer_se) {
- ret = -pthread_create(&cuse_mixer_thread, NULL,
- cuse_worker, mixer_se);
- if (ret)
- err_e(ret, "failed to create mixer worker");
- }
- if (adsp_se) {
- ret = -pthread_create(&cuse_adsp_thread, NULL,
- cuse_worker, adsp_se);
- if (ret)
- err_e(ret, "failed to create adsp worker");
- }
-
- /* run CUSE for /dev/dsp in the main thread */
- ret = (ssize_t)cuse_worker(dsp_se);
- if (ret < 0)
- fatal("dsp worker failed");
- return 0;
-}
projects / osspd.git / commitdiff