Index: sys/dev/sound/pcm/sndstat.c =================================================================== --- sys/dev/sound/pcm/sndstat.c +++ sys/dev/sound/pcm/sndstat.c @@ -31,10 +31,20 @@ #include "opt_snd.h" #endif +#include +#include +#include +#include +#include +#include +#ifdef COMPAT_FREEBSD32 +#include +#endif + #include #include #include -#include + SND_DECLARE_FILE("$FreeBSD$"); @@ -47,12 +57,14 @@ static void sndstat_close(void *); static d_read_t sndstat_read; static d_write_t sndstat_write; +static d_ioctl_t sndstat_ioctl; static struct cdevsw sndstat_cdevsw = { .d_version = D_VERSION, .d_open = sndstat_open, .d_read = sndstat_read, .d_write = sndstat_write, + .d_ioctl = sndstat_ioctl, .d_name = "sndstat", .d_flags = D_TRACKCLOSE, }; @@ -65,11 +77,31 @@ int type, unit; }; +struct sndstat_userdev { + TAILQ_ENTRY(sndstat_userdev) link; + char *nameunit; + char *devnode; + char *desc; + unsigned int pchan; + unsigned int rchan; + uint32_t pminrate; + uint32_t pmaxrate; + uint32_t rminrate; + uint32_t rmaxrate; + uint32_t pfmts; + uint32_t rfmts; +}; + struct sndstat_file { TAILQ_ENTRY(sndstat_file) entry; struct sbuf sbuf; + struct sx lock; + void *devs_nvlbuf; /* (l) */ + size_t devs_nbytes; /* (l) */ + TAILQ_HEAD(, sndstat_userdev) userdev_list; /* (l) */ int out_offset; int in_offset; + int fflags; }; static struct sx sndstat_lock; @@ -84,6 +116,8 @@ int snd_verbose = 0; static int sndstat_prepare(struct sndstat_file *); +static struct sndstat_userdev * +sndstat_line2userdev(struct sndstat_file *, const char *, int); static int sysctl_hw_sndverbose(SYSCTL_HANDLER_ARGS) @@ -112,12 +146,16 @@ pf = malloc(sizeof(*pf), M_DEVBUF, M_WAITOK | M_ZERO); - SNDSTAT_LOCK(); if (sbuf_new(&pf->sbuf, NULL, 4096, SBUF_AUTOEXTEND) == NULL) { - SNDSTAT_UNLOCK(); free(pf, M_DEVBUF); return (ENOMEM); } + + pf->fflags = flags; + TAILQ_INIT(&pf->userdev_list); + sx_init(&pf->lock, "sndstat_file"); + + SNDSTAT_LOCK(); TAILQ_INSERT_TAIL(&sndstat_filelist, pf, entry); SNDSTAT_UNLOCK(); @@ -126,6 +164,27 @@ return (0); } +/* + * Should only be called either when: + * * Closing + * * pf->lock held + */ +static void +sndstat_remove_all_userdevs(struct sndstat_file *pf) +{ + struct sndstat_userdev *ud, *tud; + + KASSERT( + sx_xlocked(&pf->lock), ("%s: Called without pf->lock", __func__)); + TAILQ_FOREACH_SAFE(ud, &pf->userdev_list, link, tud) { + TAILQ_REMOVE(&pf->userdev_list, ud, link); + free(ud->desc, M_DEVBUF); + free(ud->devnode, M_DEVBUF); + free(ud->nameunit, M_DEVBUF); + free(ud, M_DEVBUF); + } +} + static void sndstat_close(void *sndstat_file) { @@ -136,6 +195,12 @@ TAILQ_REMOVE(&sndstat_filelist, pf, entry); SNDSTAT_UNLOCK(); + free(pf->devs_nvlbuf, M_NVLIST); + sx_xlock(&pf->lock); + sndstat_remove_all_userdevs(pf); + sx_xunlock(&pf->lock); + sx_destroy(&pf->lock); + free(pf, M_DEVBUF); } @@ -203,7 +268,10 @@ err = EINVAL; } else { /* only remember the last write - allows for updates */ - sbuf_clear(&pf->sbuf); + sx_xlock(&pf->lock); + sndstat_remove_all_userdevs(pf); + sx_xunlock(&pf->lock); + while (1) { len = sizeof(temp); if (len > buf->uio_resid) @@ -221,15 +289,557 @@ } } sbuf_finish(&pf->sbuf); - if (err == 0) + + if (err == 0) { + char *line, *str; + + str = sbuf_data(&pf->sbuf); + while ((line = strsep(&str, "\n")) != NULL) { + struct sndstat_userdev *ud; + + ud = sndstat_line2userdev(pf, line, strlen(line)); + if (ud == NULL) + continue; + + sx_xlock(&pf->lock); + TAILQ_INSERT_TAIL(&pf->userdev_list, ud, link); + sx_xunlock(&pf->lock); + } + pf->out_offset = sbuf_len(&pf->sbuf); - else + } else pf->out_offset = 0; + + sbuf_clear(&pf->sbuf); } SNDSTAT_UNLOCK(); return (err); } +static void +sndstat_get_caps(struct snddev_info *d, bool play, uint32_t *min_rate, + uint32_t *max_rate, uint32_t *fmts) +{ + struct pcm_channel *c; + int dir; + + dir = play ? PCMDIR_PLAY : PCMDIR_REC; + *min_rate = 0; + *max_rate = 0; + *fmts = 0; + + if (play && d->pvchancount > 0) { + *min_rate = *max_rate = d->pvchanrate; + *fmts = d->pvchanformat; + return; + } else if (!play && d->rvchancount > 0) { + *min_rate = *max_rate = d->rvchanrate; + *fmts = d->rvchanformat; + return; + } + + CHN_FOREACH(c, d, channels.pcm) { + struct pcmchan_caps *caps; + + if (c->direction != dir || (c->flags & CHN_F_VIRTUAL) != 0) + continue; + + CHN_LOCK(c); + caps = chn_getcaps(c); + *min_rate = caps->minspeed; + *max_rate = caps->maxspeed; + *fmts = chn_getformats(c); + CHN_UNLOCK(c); + } +} + +/* + * Should only be called with the following locks held: + * * sndstat_lock + */ +static int +sndstat_create_devs_nvlist(nvlist_t **nvlp) +{ + int err; + nvlist_t *nvl; + struct sndstat_entry *ent; + struct sndstat_file *pf; + + nvl = nvlist_create(0); + if (nvl == NULL) + return (ENOMEM); + + TAILQ_FOREACH (ent, &sndstat_devlist, link) { + uint32_t maxrate, minrate, fmts; + struct snddev_info *d; + nvlist_t *di; + + if (ent->dev == NULL) + continue; + d = device_get_softc(ent->dev); + if (!PCM_REGISTERED(d)) + continue; + + di = nvlist_create(0); + if (di == NULL) { + err = ENOMEM; + goto done; + } + + nvlist_add_bool(di, SNDSTAT_LABEL_FROM_USER, false); + nvlist_add_number(di, SNDSTAT_LABEL_UNIT, + device_get_unit( + ent->dev)); // XXX: I want signed integer here + nvlist_add_stringf(di, SNDSTAT_LABEL_NAMEUNIT, "%s", + device_get_nameunit(ent->dev)); + nvlist_add_stringf(di, SNDSTAT_LABEL_DEVNODE, "dsp%d", + device_get_unit(ent->dev)); + nvlist_add_string( + di, SNDSTAT_LABEL_DESC, device_get_desc(ent->dev)); + + PCM_ACQUIRE_QUICK(d); + nvlist_add_number(di, SNDSTAT_LABEL_PCHAN, d->playcount); + nvlist_add_number(di, SNDSTAT_LABEL_RCHAN, d->reccount); + if (d->playcount > 0) { + sndstat_get_caps(d, true, &minrate, &maxrate, &fmts); + nvlist_add_number(di, SNDSTAT_LABEL_PMINRATE, minrate); + nvlist_add_number(di, SNDSTAT_LABEL_PMAXRATE, maxrate); + nvlist_add_number(di, SNDSTAT_LABEL_PFMTS, fmts); + } + if (d->reccount > 0) { + sndstat_get_caps(d, false, &minrate, &maxrate, &fmts); + nvlist_add_number(di, SNDSTAT_LABEL_RMINRATE, minrate); + nvlist_add_number(di, SNDSTAT_LABEL_RMAXRATE, maxrate); + nvlist_add_number(di, SNDSTAT_LABEL_RFMTS, fmts); + } + nvlist_add_bool( + di, SNDSTAT_LABEL_BITPERFECT, d->flags & SD_F_BITPERFECT); + nvlist_add_number(di, SNDSTAT_LABEL_PVCHAN, d->pvchancount); + nvlist_add_number(di, SNDSTAT_LABEL_RVCHAN, d->rvchancount); + PCM_RELEASE_QUICK(d); + + nvlist_append_nvlist_array(nvl, SNDSTAT_LABEL_DSPS, di); + nvlist_destroy(di); + err = nvlist_error(nvl); + if (err != 0) + goto done; + } + + TAILQ_FOREACH(pf, &sndstat_filelist, entry) { + nvlist_t *di; + struct sndstat_userdev *ud; + + sx_xlock(&pf->lock); + + TAILQ_FOREACH(ud, &pf->userdev_list, link) { + di = nvlist_create(0); + if (di == NULL) { + err = ENOMEM; + sx_xunlock(&pf->lock); + goto done; + } + + nvlist_add_bool(di, SNDSTAT_LABEL_FROM_USER, true); + nvlist_add_number(di, SNDSTAT_LABEL_PCHAN, ud->pchan); + nvlist_add_number(di, SNDSTAT_LABEL_RCHAN, ud->rchan); + nvlist_add_string(di, SNDSTAT_LABEL_NAMEUNIT, ud->nameunit); + nvlist_add_string( + di, SNDSTAT_LABEL_DEVNODE, ud->devnode); + nvlist_add_string(di, SNDSTAT_LABEL_DESC, ud->desc); + if (ud->pchan != 0) { + nvlist_add_number( + di, SNDSTAT_LABEL_PMINRATE, ud->pminrate); + nvlist_add_number( + di, SNDSTAT_LABEL_PMAXRATE, ud->pmaxrate); + nvlist_add_number( + di, SNDSTAT_LABEL_PFMTS, ud->pfmts); + } + if (ud->rchan != 0) { + nvlist_add_number( + di, SNDSTAT_LABEL_RMINRATE, ud->rminrate); + nvlist_add_number( + di, SNDSTAT_LABEL_RMAXRATE, ud->rmaxrate); + nvlist_add_number( + di, SNDSTAT_LABEL_RFMTS, ud->rfmts); + } + + nvlist_append_nvlist_array(nvl, SNDSTAT_LABEL_DSPS, di); + nvlist_destroy(di); + err = nvlist_error(nvl); + if (err != 0) { + sx_xunlock(&pf->lock); + goto done; + } + } + + sx_xunlock(&pf->lock); + } + + *nvlp = nvl; + +done: + if (err != 0) + nvlist_destroy(nvl); + return (err); +} + +static int +sndstat_refresh_devs(struct sndstat_file *pf) +{ + sx_xlock(&pf->lock); + free(pf->devs_nvlbuf, M_NVLIST); + pf->devs_nvlbuf = NULL; + pf->devs_nbytes = 0; + sx_unlock(&pf->lock); + + return (0); +} + +static int +sndstat_get_devs(struct sndstat_file *pf, caddr_t data) +{ + int err; + struct sndstat_nvlbuf_arg *arg = (struct sndstat_nvlbuf_arg *)data; + + SNDSTAT_LOCK(); + sx_xlock(&pf->lock); + + if (pf->devs_nvlbuf == NULL) { + nvlist_t *nvl; + void *nvlbuf; + size_t nbytes; + int err; + + sx_xunlock(&pf->lock); + + err = sndstat_create_devs_nvlist(&nvl); + if (err) { + SNDSTAT_UNLOCK(); + return (err); + } + + sx_xlock(&pf->lock); + + nvlbuf = nvlist_pack(nvl, &nbytes); + err = nvlist_error(nvl); + nvlist_destroy(nvl); + if (nvlbuf == NULL || err != 0) { + SNDSTAT_UNLOCK(); + sx_xunlock(&pf->lock); + if (err == 0) + return (ENOMEM); + return (err); + } + + free(pf->devs_nvlbuf, M_NVLIST); + pf->devs_nvlbuf = nvlbuf; + pf->devs_nbytes = nbytes; + } + + SNDSTAT_UNLOCK(); + + if (!arg->nbytes) { + arg->nbytes = pf->devs_nbytes; + err = 0; + goto done; + } + if (arg->nbytes < pf->devs_nbytes) { + arg->nbytes = 0; + err = 0; + goto done; + } + + err = copyout(pf->devs_nvlbuf, arg->buf, pf->devs_nbytes); + if (err) + goto done; + + arg->nbytes = pf->devs_nbytes; + + free(pf->devs_nvlbuf, M_NVLIST); + pf->devs_nvlbuf = NULL; + pf->devs_nbytes = 0; + +done: + sx_unlock(&pf->lock); + return (err); +} + +static int +sndstat_unpack_user_nvlbuf(const void *unvlbuf, size_t nbytes, nvlist_t **nvl) +{ + void *nvlbuf; + int err; + + nvlbuf = malloc(nbytes, M_DEVBUF, M_WAITOK); + err = copyin(unvlbuf, nvlbuf, nbytes); + if (err != 0) { + free(nvlbuf, M_DEVBUF); + return (err); + } + *nvl = nvlist_unpack(nvlbuf, nbytes, 0); + free(nvlbuf, M_DEVBUF); + if (nvl == NULL) { + return (EINVAL); + } + + return (0); +} + +static bool +sndstat_dsp_nvlist_is_sane(const nvlist_t *nvlist) +{ + if (!(nvlist_exists_string(nvlist, SNDSTAT_LABEL_DEVNODE) && + nvlist_exists_string(nvlist, SNDSTAT_LABEL_DESC) && + nvlist_exists_number(nvlist, SNDSTAT_LABEL_PCHAN) && + nvlist_exists_number(nvlist, SNDSTAT_LABEL_RCHAN))) + return (false); + + return (true); + +} + +static void +sndstat_dsp_unpack_nvlist(const nvlist_t *nvlist, struct sndstat_userdev *ud) +{ + const char *nameunit, *devnode, *desc; + unsigned int pchan, rchan; + uint32_t pminrate = 0, pmaxrate = 0; + uint32_t rminrate = 0, rmaxrate = 0; + uint32_t pfmts = 0, rfmts = 0; + + devnode = nvlist_get_string(nvlist, SNDSTAT_LABEL_DEVNODE); + if (nvlist_exists_string(nvlist, SNDSTAT_LABEL_NAMEUNIT)) + nameunit = nvlist_get_string(nvlist, SNDSTAT_LABEL_NAMEUNIT); + else + nameunit = devnode; + desc = nvlist_get_string(nvlist, SNDSTAT_LABEL_DESC); + pchan = nvlist_get_number(nvlist, SNDSTAT_LABEL_PCHAN); + rchan = nvlist_get_number(nvlist, SNDSTAT_LABEL_RCHAN); + if (pchan != 0) { + pminrate = dnvlist_get_number( + nvlist, SNDSTAT_LABEL_PMINRATE, 48000); + pmaxrate = dnvlist_get_number( + nvlist, SNDSTAT_LABEL_PMAXRATE, 48000); + pfmts = dnvlist_get_number(nvlist, SNDSTAT_LABEL_PFMTS, + AFMT_ENCODING(AFMT_S16_LE)); + } + if (rchan != 0) { + rminrate = dnvlist_get_number( + nvlist, SNDSTAT_LABEL_RMINRATE, 48000); + rmaxrate = dnvlist_get_number( + nvlist, SNDSTAT_LABEL_RMAXRATE, 48000); + rfmts = dnvlist_get_number(nvlist, SNDSTAT_LABEL_RFMTS, + AFMT_ENCODING(AFMT_S16_LE)); + } + + ud->devnode = strdup(devnode, M_DEVBUF); + ud->nameunit = strdup(nameunit, M_DEVBUF); + ud->desc = strdup(desc, M_DEVBUF); + ud->pchan = pchan; + ud->rchan = rchan; + ud->pminrate = pminrate; + ud->pmaxrate = pmaxrate; + ud->rminrate = rminrate; + ud->rmaxrate = rmaxrate; + ud->pfmts = pfmts; + ud->rfmts = rfmts; +} + +static int +sndstat_add_user_devs(struct sndstat_file *pf, caddr_t data) +{ + int err; + nvlist_t *nvl = NULL; + const nvlist_t * const *dsps; + size_t i, ndsps; + struct sndstat_nvlbuf_arg *arg = (struct sndstat_nvlbuf_arg *)data; + + if ((pf->fflags & FWRITE) == 0) { + err = EPERM; + goto done; + } + + err = sndstat_unpack_user_nvlbuf(arg->buf, arg->nbytes, &nvl); + if (err != 0) + goto done; + + if (!nvlist_exists_nvlist_array(nvl, SNDSTAT_LABEL_DSPS)) { + err = EINVAL; + goto done; + } + dsps = nvlist_get_nvlist_array(nvl, SNDSTAT_LABEL_DSPS, &ndsps); + for (i = 0; i < ndsps; i++) { + if (!sndstat_dsp_nvlist_is_sane(dsps[i])) { + err = EINVAL; + goto done; + } + } + sx_xlock(&pf->lock); + for (i = 0; i < ndsps; i++) { + struct sndstat_userdev *ud = + malloc(sizeof(*ud), M_DEVBUF, M_WAITOK); + sndstat_dsp_unpack_nvlist(dsps[i], ud); + TAILQ_INSERT_TAIL(&pf->userdev_list, ud, link); + } + sx_unlock(&pf->lock); + +done: + nvlist_destroy(nvl); + return (err); +} + +static int +sndstat_flush_user_devs(struct sndstat_file *pf) +{ + if ((pf->fflags & FWRITE) == 0) + return (EPERM); + + sx_xlock(&pf->lock); + sndstat_remove_all_userdevs(pf); + sx_xunlock(&pf->lock); + + return (0); +} + +#ifdef COMPAT_FREEBSD32 +static int +compat_sndstat_get_devs32(struct sndstat_file *pf, caddr_t data) +{ + struct sndstat_nvlbuf_arg32 *arg32 = (struct sndstat_nvlbuf_arg32 *)data; + struct sndstat_nvlbuf_arg arg; + int err; + + arg.buf = (void *)(uintptr_t)arg32->buf; + arg.nbytes = arg32->nbytes; + + err = sndstat_get_devs(pf, (caddr_t)&arg); + if (err == 0) { + arg32->buf = (uint32_t)(uintptr_t)arg.buf; + arg32->nbytes = arg.nbytes; + } + + return (err); +} + +static int +compat_sndstat_add_user_devs32(struct sndstat_file *pf, caddr_t data) +{ + struct sndstat_nvlbuf_arg32 *arg32 = (struct sndstat_nvlbuf_arg32 *)data; + struct sndstat_nvlbuf_arg arg; + int err; + + arg.buf = (void *)(uintptr_t)arg32->buf; + arg.nbytes = arg32->nbytes; + + err = sndstat_add_user_devs(pf, (caddr_t)&arg); + if (err == 0) { + arg32->buf = (uint32_t)(uintptr_t)arg.buf; + arg32->nbytes = arg.nbytes; + } + + return (err); +} +#endif + +static int +sndstat_ioctl( + struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td) +{ + int err; + struct sndstat_file *pf; + + err = devfs_get_cdevpriv((void **)&pf); + if (err != 0) + return (err); + + switch (cmd) { + case SNDSTAT_GET_DEVS: + err = sndstat_get_devs(pf, data); + break; +#ifdef COMPAT_FREEBSD32 + case SNDSTAT_GET_DEVS32: + if (!SV_CURPROC_FLAG(SV_ILP32)) { + err = ENODEV; + break; + } + err = compat_sndstat_get_devs32(pf, data); + break; +#endif + case SNDSTAT_ADD_USER_DEVS: + err = sndstat_add_user_devs(pf, data); + break; +#ifdef COMPAT_FREEBSD32 + case SNDSTAT_ADD_USER_DEVS32: + if (!SV_CURPROC_FLAG(SV_ILP32)) { + err = ENODEV; + break; + } + err = compat_sndstat_add_user_devs32(pf, data); + break; +#endif + case SNDSTAT_REFRESH_DEVS: + err = sndstat_refresh_devs(pf); + break; + case SNDSTAT_FLUSH_USER_DEVS: + err = sndstat_flush_user_devs(pf); + break; + default: + err = ENODEV; + } + + return (err); +} + +static struct sndstat_userdev * +sndstat_line2userdev(struct sndstat_file *pf, const char *line, int n) +{ + struct sndstat_userdev *ud; + const char *e, *m; + + ud = malloc(sizeof(*ud), M_DEVBUF, M_WAITOK|M_ZERO); + + e = strchr(line, ':'); + if (e == NULL) + goto fail; + ud->nameunit = strndup(line, e - line, M_DEVBUF); + ud->devnode = (char *)malloc(e - line + 1, M_DEVBUF, M_WAITOK | M_ZERO); + strlcat(ud->devnode, ud->nameunit, e - line + 1); + line = e + 1; + + e = strchr(line, '<'); + if (e == NULL) + goto fail; + line = e + 1; + e = strrchr(line, '>'); + if (e == NULL) + goto fail; + ud->desc = strndup(line, e - line, M_DEVBUF); + line = e + 1; + + e = strchr(line, '('); + if (e == NULL) + goto fail; + line = e + 1; + e = strrchr(line, ')'); + if (e == NULL) + goto fail; + m = strstr(line, "play"); + if (m != NULL && m < e) + ud->pchan = 1; + m = strstr(line, "rec"); + if (m != NULL && m < e) + ud->rchan = 1; + + return (ud); + +fail: + free(ud->nameunit, M_DEVBUF); + free(ud->devnode, M_DEVBUF); + free(ud->desc, M_DEVBUF); + free(ud, M_DEVBUF); + return (NULL); +} + /************************************************************************/ int @@ -379,14 +989,26 @@ /* append any input from userspace */ k = 0; TAILQ_FOREACH(pf, &sndstat_filelist, entry) { + struct sndstat_userdev *ud; + if (pf == pf_self) continue; - if (pf->out_offset == 0) + sx_xlock(&pf->lock); + if (TAILQ_EMPTY(&pf->userdev_list)) { + sx_unlock(&pf->lock); continue; + } if (!k++) sbuf_printf(s, "Installed devices from userspace:\n"); - sbuf_bcat(s, sbuf_data(&pf->sbuf), - sbuf_len(&pf->sbuf)); + TAILQ_FOREACH(ud, &pf->userdev_list, link) { + const char *caps = (ud->pchan && ud->rchan) ? + "play/rec" : + (ud->pchan ? "play" : (ud->rchan ? "rec" : "")); + sbuf_printf(s, "%s: <%s>", ud->nameunit, ud->desc); + sbuf_printf(s, " (%s)", caps); + sbuf_printf(s, "\n"); + } + sx_unlock(&pf->lock); } if (k == 0) sbuf_printf(s, "No devices installed from userspace.\n"); Index: sys/dev/sound/pcm/sound.h =================================================================== --- sys/dev/sound/pcm/sound.h +++ sys/dev/sound/pcm/sound.h @@ -64,6 +64,7 @@ #include #include #include +#include #include #include #include Index: sys/sys/sndstat.h =================================================================== --- /dev/null +++ sys/sys/sndstat.h @@ -0,0 +1,88 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2020 The FreeBSD Foundation + * + * This software was developed by Ka Ho Ng + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _SYS_SNDSTAT_H_ +#define _SYS_SNDSTAT_H_ + +#include +#ifndef _IOWR +#include +#endif /* !_IOWR */ + +struct sndstat_nvlbuf_arg { + size_t nbytes; /* [IN/OUT] buffer size/number of bytes filled */ + void *buf; /* [OUT] buffer holding a packed nvlist */ +}; + +#define SNDSTAT_LABEL_DSPS "dsps" +#define SNDSTAT_LABEL_FROM_USER "from_user" +#define SNDSTAT_LABEL_UNIT "unit" +#define SNDSTAT_LABEL_PCHAN "pchan" +#define SNDSTAT_LABEL_RCHAN "rchan" +#define SNDSTAT_LABEL_PVCHAN "pvchan" +#define SNDSTAT_LABEL_RVCHAN "rvchan" +#define SNDSTAT_LABEL_PMINRATE "pminrate" +#define SNDSTAT_LABEL_PMAXRATE "pmaxrate" +#define SNDSTAT_LABEL_RMINRATE "rminrate" +#define SNDSTAT_LABEL_RMAXRATE "rmaxrate" +#define SNDSTAT_LABEL_PFMTS "pfmts" +#define SNDSTAT_LABEL_RFMTS "rfmts" +#define SNDSTAT_LABEL_BITPERFECT "bitperfect" +#define SNDSTAT_LABEL_NAMEUNIT "nameunit" +#define SNDSTAT_LABEL_DEVNODE "devnode" +#define SNDSTAT_LABEL_DESC "desc" + +#define SNDSTAT_DEVS_VER_MAJOR 1 +#define SNDSTAT_DEVS_VER_MINOR 0 + +#define SNDSTAT_REFRESH_DEVS _IO('D', 100) +#define SNDSTAT_GET_DEVS _IOWR('D', 101, struct sndstat_nvlbuf_arg) +#define SNDSTAT_ADD_USER_DEVS _IOWR('D', 102, struct sndstat_nvlbuf_arg) +#define SNDSTAT_FLUSH_USER_DEVS _IO('D', 103) + +#ifdef _KERNEL +#ifdef COMPAT_FREEBSD32 + +struct sndstat_nvlbuf_arg32 { + uint32_t nbytes; + uint32_t buf; +}; + +#define SNDSTAT_GET_DEVS32 \ + _IOC_NEWTYPE(SNDSTAT_GET_DEVS, struct sndstat_nvlbuf_arg32) +#define SNDSTAT_ADD_USER_DEVS32 \ + _IOC_NEWTYPE(SNDSTAT_ADD_USER_DEVS, struct sndstat_nvlbuf_arg32) + +#endif +#endif + +#endif /* !_SYS_SNDSTAT_H_ */