/*
- * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*/
/*
* Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
* HISTORY
*
* 30 July 1997 Umesh Vaishampayan (umeshv@apple.com)
- * enabled file descriptor pseudo-device.
+ * enabled file descriptor pseudo-device.
* 18 June 1993 ? at NeXT
* Cleaned up a lot of stuff in this file.
*/
/* 0 - 7 are reserved to NeXT */
- NO_BDEVICE, /* 0 */
- NO_BDEVICE, /* 1 */
- NO_BDEVICE, /* 2 */
- NO_BDEVICE, /* 3 */
- NO_BDEVICE, /* 4 */
- NO_BDEVICE, /* 5 */
- NO_BDEVICE, /* 6 */
- NO_BDEVICE, /* 7 */
+ NO_BDEVICE, /* 0 */
+ NO_BDEVICE, /* 1 */
+ NO_BDEVICE, /* 2 */
+ NO_BDEVICE, /* 3 */
+ NO_BDEVICE, /* 4 */
+ NO_BDEVICE, /* 5 */
+ NO_BDEVICE, /* 6 */
+ NO_BDEVICE, /* 7 */
/* 8 - 15 are reserved to the user */
- NO_BDEVICE, /* 8 */
- NO_BDEVICE, /* 9 */
- NO_BDEVICE, /* 10 */
- NO_BDEVICE, /* 11 */
- NO_BDEVICE, /* 12 */
- NO_BDEVICE, /* 13 */
- NO_BDEVICE, /* 14 */
- NO_BDEVICE, /* 15 */
+ NO_BDEVICE, /* 8 */
+ NO_BDEVICE, /* 9 */
+ NO_BDEVICE, /* 10 */
+ NO_BDEVICE, /* 11 */
+ NO_BDEVICE, /* 12 */
+ NO_BDEVICE, /* 13 */
+ NO_BDEVICE, /* 14 */
+ NO_BDEVICE, /* 15 */
/* 16 - 23 are reserved to NeXT */
- NO_BDEVICE, /* 16 */
- NO_BDEVICE, /* 17 */
- NO_BDEVICE, /* 18 */
- NO_BDEVICE, /* 18 */
- NO_BDEVICE, /* 20 */
- NO_BDEVICE, /* 21 */
- NO_BDEVICE, /* 22 */
- NO_BDEVICE, /* 23 */
+ NO_BDEVICE, /* 16 */
+ NO_BDEVICE, /* 17 */
+ NO_BDEVICE, /* 18 */
+ NO_BDEVICE, /* 18 */
+ NO_BDEVICE, /* 20 */
+ NO_BDEVICE, /* 21 */
+ NO_BDEVICE, /* 22 */
+ NO_BDEVICE, /* 23 */
};
const int nblkdev = sizeof(bdevsw) / sizeof(bdevsw[0]);
extern d_close_t volclose;
extern d_ioctl_t volioctl;
#else
-#define volopen eno_opcl
-#define volclose eno_opcl
-#define volioctl eno_ioctl
+#define volopen eno_opcl
+#define volclose eno_opcl
+#define volioctl eno_ioctl
#endif
extern d_open_t cttyopen;
extern d_read_t mmread;
extern d_write_t mmwrite;
extern d_ioctl_t mmioctl;
-#define mmselect (select_fcn_t *)seltrue
-#define mmmmap eno_mmap
+#define mmselect (select_fcn_t *)seltrue
+#define mmmmap eno_mmap
#include <pty.h>
#if NPTY > 0
extern d_select_t ptcselect;
extern d_ioctl_t ptyioctl;
#else
-#define ptsopen eno_opcl
-#define ptsclose eno_opcl
-#define ptsread eno_rdwrt
-#define ptswrite eno_rdwrt
-#define ptsstop nulldev
+#define ptsopen eno_opcl
+#define ptsclose eno_opcl
+#define ptsread eno_rdwrt
+#define ptswrite eno_rdwrt
+#define ptsstop nulldev
-#define ptcopen eno_opcl
-#define ptcclose eno_opcl
-#define ptcread eno_rdwrt
-#define ptcwrite eno_rdwrt
-#define ptcselect eno_select
-#define ptyioctl eno_ioctl
+#define ptcopen eno_opcl
+#define ptcclose eno_opcl
+#define ptcread eno_rdwrt
+#define ptcwrite eno_rdwrt
+#define ptcselect eno_select
+#define ptyioctl eno_ioctl
#endif
extern d_open_t logopen;
extern d_ioctl_t oslog_streamioctl;
extern d_select_t oslog_streamselect;
-extern d_open_t oslogopen;
-extern d_close_t oslogclose;
-extern d_select_t oslogselect;
-extern d_ioctl_t oslogioctl;
+extern d_open_t oslogopen;
+extern d_close_t oslogclose;
+extern d_select_t oslogselect;
+extern d_ioctl_t oslogioctl;
-#define nullopen (d_open_t *)&nulldev
-#define nullclose (d_close_t *)&nulldev
-#define nullread (d_read_t *)&nulldev
-#define nullwrite (d_write_t *)&nulldev
-#define nullioctl (d_ioctl_t *)&nulldev
-#define nullselect (d_select_t *)&nulldev
-#define nullstop (d_stop_t *)&nulldev
-#define nullreset (d_reset_t *)&nulldev
+#define nullopen (d_open_t *)&nulldev
+#define nullclose (d_close_t *)&nulldev
+#define nullread (d_read_t *)&nulldev
+#define nullwrite (d_write_t *)&nulldev
+#define nullioctl (d_ioctl_t *)&nulldev
+#define nullselect (d_select_t *)&nulldev
+#define nullstop (d_stop_t *)&nulldev
+#define nullreset (d_reset_t *)&nulldev
struct cdevsw cdevsw[] = {
/*
kmioctl, nullstop, nullreset, km_tty, ttselect,
eno_mmap, eno_strat, eno_getc, eno_putc, 0
},
- [13 ... 41] = NO_CDEVICE,
- [42] = {
- volopen, volclose, eno_rdwrt, eno_rdwrt,
- volioctl, eno_stop, eno_reset, 0, (select_fcn_t *) seltrue,
- eno_mmap, eno_strat, eno_getc, eno_putc, 0
- }
+ [13 ... 42] = NO_CDEVICE,
};
const int nchrdev = sizeof(cdevsw) / sizeof(cdevsw[0]);
uint64_t cdevsw_flags[sizeof(cdevsw) / sizeof(cdevsw[0])];
-#include <sys/vnode.h> /* for VCHR and VBLK */
+#include <sys/vnode.h> /* for VCHR and VBLK */
/*
* return true if a disk
*/
switch (type) {
case VCHR:
- maj = chrtoblk(maj);
+ maj = chrtoblk(dev);
if (maj == NODEV) {
break;
}
- /* FALL THROUGH */
+ OS_FALLTHROUGH;
case VBLK:
if (bdevsw[maj].d_type == D_DISK) {
- return (1);
+ return 1;
}
break;
}
- return (0);
+ return 0;
}
-static int chrtoblktab[] = {
- /* CHR *//* BLK *//* CHR *//* BLK */
- /* 0 */ NODEV, /* 1 */ NODEV,
- /* 2 */ NODEV, /* 3 */ NODEV,
- /* 4 */ NODEV, /* 5 */ NODEV,
- /* 6 */ NODEV, /* 7 */ NODEV,
- /* 8 */ NODEV, /* 9 */ NODEV,
- /* 10 */ NODEV, /* 11 */ NODEV,
- /* 12 */ NODEV, /* 13 */ NODEV,
- /* 14 */ NODEV, /* 15 */ NODEV,
- /* 16 */ NODEV, /* 17 */ NODEV,
- /* 18 */ NODEV, /* 19 */ NODEV,
- /* 20 */ NODEV, /* 21 */ NODEV,
- /* 22 */ NODEV, /* 23 */ NODEV,
- /* 24 */ NODEV, /* 25 */ NODEV,
- /* 26 */ NODEV, /* 27 */ NODEV,
- /* 28 */ NODEV, /* 29 */ NODEV,
- /* 30 */ NODEV, /* 31 */ NODEV,
- /* 32 */ NODEV, /* 33 */ NODEV,
- /* 34 */ NODEV, /* 35 */ NODEV,
- /* 36 */ NODEV, /* 37 */ NODEV,
- /* 38 */ NODEV, /* 39 */ NODEV,
- /* 40 */ NODEV, /* 41 */ NODEV,
- /* 42 */ NODEV, /* 43 */ NODEV,
- /* 44 */ NODEV,
-};
+static int chrtoblktab[] = {[0 ... nchrdev] = NODEV };
/*
* convert chr dev to blk dev
{
int blkmaj;
- if (major(dev) >= nchrdev)
- return (NODEV);
+ if (major(dev) >= nchrdev) {
+ return NODEV;
+ }
blkmaj = chrtoblktab[major(dev)];
- if (blkmaj == NODEV)
- return (NODEV);
- return (makedev(blkmaj, minor(dev)));
+ if (blkmaj == NODEV) {
+ return NODEV;
+ }
+ return makedev(blkmaj, minor(dev));
}
int
chrtoblk_set(int cdev, int bdev)
{
- if (cdev >= nchrdev)
- return (-1);
- if (bdev != NODEV && bdev >= nblkdev)
- return (-1);
+ if (cdev >= nchrdev) {
+ return -1;
+ }
+ if (bdev != NODEV && bdev >= nblkdev) {
+ return -1;
+ }
chrtoblktab[cdev] = bdev;
return 0;
}
projects / apple / xnu.git / blobdiff