[src/trunk]: src/lib/libossaudio ossaudio(3): Set errno and return -1 rather ...

[nia <nia%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/65a5668d5019
branches:  trunk
changeset: 945709:65a5668d5019
user:      nia <nia%NetBSD.org@localhost>
date:      Wed Nov 04 22:59:24 2020 +0000

description:
ossaudio(3): Set errno and return -1 rather than returning errno.

diffstat:

 lib/libossaudio/ossaudio.c |  69 ++++++++++++++++++++++++++++++----------------
 1 files changed, 45 insertions(+), 24 deletions(-)

diffs (159 lines):

diff -r 29b1dc63bada -r 65a5668d5019 lib/libossaudio/ossaudio.c
--- a/lib/libossaudio/ossaudio.c        Wed Nov 04 22:06:38 2020 +0000
+++ b/lib/libossaudio/ossaudio.c        Wed Nov 04 22:59:24 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ossaudio.c,v 1.62 2020/11/03 09:46:00 nia Exp $        */
+/*     $NetBSD: ossaudio.c,v 1.63 2020/11/04 22:59:24 nia Exp $        */
 
 /*-
  * Copyright (c) 1997, 2020 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: ossaudio.c,v 1.62 2020/11/03 09:46:00 nia Exp $");
+__RCSID("$NetBSD: ossaudio.c,v 1.63 2020/11/04 22:59:24 nia Exp $");
 
 /*
  * This is an Open Sound System compatibility layer, which provides
@@ -146,8 +146,10 @@
                break;
        case SNDCTL_DSP_GETERROR:
                tmperrinfo = (struct audio_errinfo *)argp;
-               if (tmperrinfo == NULL)
-                       return EINVAL;
+               if (tmperrinfo == NULL) {
+                       errno = EINVAL;
+                       return -1;
+               }
                memset(tmperrinfo, 0, sizeof(struct audio_errinfo));
                if ((retval = ioctl(fd, AUDIO_GETBUFINFO, &tmpinfo)) < 0)
                        return retval;
@@ -413,8 +415,10 @@
        case SNDCTL_DSP_SETFRAGMENT:
                AUDIO_INITINFO(&tmpinfo);
                idat = INTARG;
-               if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17)
-                       return EINVAL;
+               if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17) {
+                       errno = EINVAL;
+                       return -1;
+               }
                tmpinfo.blocksize = 1 << (idat & 0xffff);
                tmpinfo.hiwat = ((unsigned)idat >> 16) & 0x7fff;
                if (tmpinfo.hiwat == 0) /* 0 means set to max */
@@ -613,8 +617,9 @@
                INTARG = getvol(tmpinfo.record.gain, tmpinfo.record.balance);
                break;
        case SNDCTL_DSP_SKIP:
-       case SNDCTL_DSP_SILENCE:
-               return EINVAL;
+       case SNDCTL_DSP_SILENCE: 
+               errno = EINVAL;
+               return -1;
        case SNDCTL_DSP_SETDUPLEX:
                idat = 1;
                retval = ioctl(fd, AUDIO_SETFD, &idat);
@@ -865,8 +870,10 @@
                strlcpy(omi->name, adev.name, sizeof omi->name);
                return 0;
        case SOUND_MIXER_READ_RECSRC:
-               if (di->source == -1)
-                       return EINVAL;
+               if (di->source == -1) {
+                       errno = EINVAL;
+                       return -1;
+               }
                mc.dev = di->source;
                if (di->caps & SOUND_CAP_EXCL_INPUT) {
                        mc.type = AUDIO_MIXER_ENUM;
@@ -900,8 +907,10 @@
                break;
        case SOUND_MIXER_WRITE_RECSRC:
        case SOUND_MIXER_WRITE_R_RECSRC:
-               if (di->source == -1)
-                       return EINVAL;
+               if (di->source == -1) {
+                       errno = EINVAL;
+                       return -1;
+               }
                mc.dev = di->source;
                idat = INTARG;
                if (di->caps & SOUND_CAP_EXCL_INPUT) {
@@ -910,16 +919,20 @@
                                if (idat & (1 << i))
                                        break;
                        if (i >= SOUND_MIXER_NRDEVICES ||
-                           di->devmap[i] == -1)
-                               return EINVAL;
+                           di->devmap[i] == -1) {
+                               errno = EINVAL;
+                               return -1;
+                       }
                        mc.un.ord = enum_to_ord(di, di->devmap[i]);
                } else {
                        mc.type = AUDIO_MIXER_SET;
                        mc.un.mask = 0;
                        for(i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
                                if (idat & (1 << i)) {
-                                       if (di->devmap[i] == -1)
-                                               return EINVAL;
+                                       if (di->devmap[i] == -1) {
+                                               errno = EINVAL;
+                                               return -1;
+                                       }
                                        mc.un.mask |=
                                            enum_to_mask(di, di->devmap[i]);
                                }
@@ -930,8 +943,10 @@
                if (MIXER_READ(SOUND_MIXER_FIRST) <= com &&
                    com < MIXER_READ(SOUND_MIXER_NRDEVICES)) {
                        n = GET_DEV(com);
-                       if (di->devmap[n] == -1)
-                               return EINVAL;
+                       if (di->devmap[n] == -1) {
+                               errno = EINVAL;
+                               return -1;
+                       }
                        mc.dev = di->devmap[n];
                        mc.type = AUDIO_MIXER_VALUE;
                    doread:
@@ -940,8 +955,10 @@
                        retval = ioctl(fd, AUDIO_MIXER_READ, &mc);
                        if (retval < 0)
                                return retval;
-                       if (mc.type != AUDIO_MIXER_VALUE)
-                               return EINVAL;
+                       if (mc.type != AUDIO_MIXER_VALUE) {
+                               errno = EINVAL;
+                               return -1;
+                       }
                        if (mc.un.value.num_channels != 2) {
                                l = r =
                                    mc.un.value.level[AUDIO_MIXER_LEVEL_MONO];
@@ -956,8 +973,10 @@
                           (MIXER_WRITE(SOUND_MIXER_FIRST) <= com &&
                           com < MIXER_WRITE(SOUND_MIXER_NRDEVICES))) {
                        n = GET_DEV(com);
-                       if (di->devmap[n] == -1)
-                               return EINVAL;
+                       if (di->devmap[n] == -1) {
+                               errno = EINVAL;
+                               return -1;
+                       }
                        idat = INTARG;
                        l = FROM_OSSVOL((u_int)idat & 0xff);
                        r = FROM_OSSVOL(((u_int)idat >> 8) & 0xff);
@@ -1114,8 +1133,10 @@
                break;
        case SNDCTL_CARDINFO:
                cardinfo = (oss_card_info *)argp;
-               if (cardinfo == NULL)
-                       return EINVAL;
+               if (cardinfo == NULL) {
+                       errno = EINVAL;
+                       return -1;
+               }
                if (cardinfo->card != -1) {
                        snprintf(devname, sizeof(devname),
                            "/dev/audio%d", cardinfo->card);