summaryrefslogtreecommitdiff
path: root/src/misc/ioctl.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/misc/ioctl.c')
-rw-r--r--src/misc/ioctl.c50
1 files changed, 49 insertions, 1 deletions
diff --git a/src/misc/ioctl.c b/src/misc/ioctl.c
index 245876e2..84a50d44 100644
--- a/src/misc/ioctl.c
+++ b/src/misc/ioctl.c
@@ -23,9 +23,49 @@ struct ioctl_compat_map {
#define COUNT(...) NINTH(__VA_ARGS__,8,7,6,5,4,3,2,1,0)
#define OFFS(...) COUNT(__VA_ARGS__), { __VA_ARGS__ }
+/* yields a type for a struct with original size n, with a misaligned
+ * timeval/timespec expanded from 32- to 64-bit. for use with ioctl
+ * number producing macros; only size of result is meaningful. */
+#define new_misaligned(n) struct { int i; time_t t; char c[(n)-4]; }
+
static const struct ioctl_compat_map compat_map[] = {
{ SIOCGSTAMP, SIOCGSTAMP_OLD, 8, R, 0, OFFS(0, 4) },
{ SIOCGSTAMPNS, SIOCGSTAMPNS_OLD, 8, R, 0, OFFS(0, 4) },
+
+ /* SNDRV_TIMER_IOCTL_STATUS */
+ { _IOR('T', 0x14, char[96]), _IOR('T', 0x14, 88), 88, R, 0, OFFS(0,4) },
+
+ /* SNDRV_PCM_IOCTL_STATUS[_EXT] */
+ { _IOR('A', 0x20, char[128]), _IOR('A', 0x20, char[108]), 108, R, 1, OFFS(4,8,12,16,52,56,60,64) },
+ { _IOWR('A', 0x24, char[128]), _IOWR('A', 0x24, char[108]), 108, WR, 1, OFFS(4,8,12,16,52,56,60,64) },
+
+ /* SNDRV_RAWMIDI_IOCTL_STATUS */
+ { _IOWR('W', 0x20, char[48]), _IOWR('W', 0x20, char[36]), 36, WR, 1, OFFS(4,8) },
+
+ /* SNDRV_PCM_IOCTL_SYNC_PTR - with 3 subtables */
+ { _IOWR('A', 0x23, char[136]), _IOWR('A', 0x23, char[132]), 0, WR, 1, 0 },
+ { 0, 0, 4, WR, 1, 0 }, /* snd_pcm_sync_ptr (flags only) */
+ { 0, 0, 32, WR, 1, OFFS(8,12,16,24,28) }, /* snd_pcm_mmap_status */
+ { 0, 0, 8, WR, 1, OFFS(0,4) }, /* snd_pcm_mmap_control */
+
+ /* VIDIOC_QUERYBUF, VIDIOC_QBUF, VIDIOC_DQBUF, VIDIOC_PREPARE_BUF */
+ { _IOWR('V', 9, new_misaligned(72)), _IOWR('V', 9, char[72]), 72, WR, 0, OFFS(20) },
+ { _IOWR('V', 15, new_misaligned(72)), _IOWR('V', 15, char[72]), 72, WR, 0, OFFS(20) },
+ { _IOWR('V', 17, new_misaligned(72)), _IOWR('V', 17, char[72]), 72, WR, 0, OFFS(20) },
+ { _IOWR('V', 93, new_misaligned(72)), _IOWR('V', 93, char[72]), 72, WR, 0, OFFS(20) },
+
+ /* VIDIOC_DQEVENT */
+ { _IOR('V', 89, new_misaligned(96)), _IOR('V', 89, char[96]), 96, R, 0, OFFS(76,80) },
+
+ /* PPPIOCGIDLE */
+ { _IOR('t', 63, char[16]), _IOR('t', 63, char[8]), 8, R, 0, OFFS(0,4) },
+
+ /* PPGETTIME, PPSETTIME */
+ { _IOR('p', 0x95, char[16]), _IOR('p', 0x95, char[8]), 8, R, 0, OFFS(0,4) },
+ { _IOW('p', 0x96, char[16]), _IOW('p', 0x96, char[8]), 8, W, 0, OFFS(0,4) },
+
+ /* LPSETTIMEOUT */
+ { _IOW(0x6, 0xf, char[16]), 0x060f, 8, W, 0, OFFS(0,4) },
};
static void convert_ioctl_struct(const struct ioctl_compat_map *map, char *old, char *new, int dir)
@@ -34,6 +74,14 @@ static void convert_ioctl_struct(const struct ioctl_compat_map *map, char *old,
int old_offset = 0;
int old_size = map->old_size;
if (!(dir & map->dir)) return;
+ if (!map->old_size) {
+ /* offsets hard-coded for SNDRV_PCM_IOCTL_SYNC_PTR;
+ * if another exception appears this needs changing. */
+ convert_ioctl_struct(map+1, old, new, dir);
+ convert_ioctl_struct(map+2, old+4, new+8, dir);
+ convert_ioctl_struct(map+3, old+68, new+72, dir);
+ return;
+ }
for (int i=0; i < map->noffs; i++) {
int ts_offset = map->offsets[i];
int len = ts_offset-old_offset;
@@ -69,7 +117,7 @@ int ioctl(int fd, int req, ...)
arg = va_arg(ap, void *);
va_end(ap);
int r = __syscall(SYS_ioctl, fd, req, arg);
- if (r==-ENOTTY) {
+ if (req && r==-ENOTTY) {
for (int i=0; i<sizeof compat_map/sizeof *compat_map; i++) {
if (compat_map[i].new_req != req) continue;
union {