summaryrefslogtreecommitdiffstats
path: root/clockB/kd.c
diff options
context:
space:
mode:
Diffstat (limited to 'clockB/kd.c')
-rw-r--r--clockB/kd.c219
1 files changed, 0 insertions, 219 deletions
diff --git a/clockB/kd.c b/clockB/kd.c
deleted file mode 100644
index 68287cb54..000000000
--- a/clockB/kd.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/**************************************************************************
-
- This is a component of the hwclock program.
-
- This file contains the code for accessing the hardware clock via
- the KDHWCLK facility of M68k machines.
-
-****************************************************************************/
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/ioctl.h>
-
-#include "hwclock.h"
-
-
-
-#if defined(KDGHWCLK)
-const bool got_kdghwclk = TRUE;
-static const int kdghwclk_ioctl = KDGHWCLK;
-static const int kdshwclk_ioctl = KDSHWCLK;
-#else
-const bool got_kdghwclk = FALSE;
-static const int kdghwclk_ioctl; /* Never used; just to make compile work */
-struct hwclk_time {int sec;};
- /* Never used; just to make compile work */
-#endif
-
-
-void
-synchronize_to_clock_tick_KD(int *retcode_p) {
-/*----------------------------------------------------------------------------
- Wait for the top of a clock tick by calling KDGHWCLK in a busy loop until
- we see it.
------------------------------------------------------------------------------*/
- int con_fd;
-
- if (debug)
- printf("Waiting in loop for time from KDGHWCLK to change\n");
-
- con_fd = open("/dev/tty1", O_RDONLY);
- if (con_fd < 0) {
- fprintf(stderr, "%s: open() failed to open /dev/tty1, errno = %s (%d).\n",
- MYNAME, strerror(errno), errno);
- *retcode_p = 1;
- } else {
- int rc; /* return code from ioctl() */
- int i; /* local loop index */
- /* The time when we were called (and started waiting) */
- struct hwclk_time start_time, nowtime;
-
- rc = ioctl(con_fd, kdghwclk_ioctl, &start_time);
- if (rc == -1) {
- fprintf(stderr, "%s: KDGHWCLK to read time failed, "
- "errno = %s (%d).\n", MYNAME, strerror(errno), errno);
- *retcode_p = 3;
- }
-
- for (i = 0;
- (rc = ioctl(con_fd, kdghwclk_ioctl, &nowtime)) != -1
- && start_time.sec == nowtime.sec && i < 1000000;
- i++);
- if (i >= 1000000) {
- fprintf(stderr, "%s: Timed out waiting for time change.\n", MYNAME);
- *retcode_p = 2;
- } else if (rc == -1) {
- fprintf(stderr, "%s: KDGHWCLK to read time failed, "
- "errno = %s (%d).\n", MYNAME, strerror(errno), errno);
- *retcode_p = 3;
- } else *retcode_p = 0;
- close(con_fd);
- }
-}
-
-
-
-void
-read_hardware_clock_kd(struct tm *tm) {
-/*----------------------------------------------------------------------------
- Read the hardware clock and return the current time via <tm>
- argument. Use ioctls to /dev/tty1 on what we assume is an m68k
- machine.
-
- Note that we don't use /dev/console here. That might be a serial
- console.
------------------------------------------------------------------------------*/
-#ifdef KDGHWCLK
- int con_fd;
- struct hwclk_time t;
-
- con_fd = open("/dev/tty1", O_RDONLY);
- if (con_fd < 0) {
- fprintf(stderr, "%s: open() failed to open /dev/tty1, errno = %s (%d).\n",
- MYNAME, strerror(errno), errno);
- exit(5);
- } else {
- int rc; /* return code from ioctl() */
-
- rc = ioctl(con_fd, kdghwclk_ioctl, &t);
- if (rc == -1) {
- fprintf(stderr, "%s: ioctl() failed to read time from /dev/tty1, "
- "errno = %s (%d).\n",
- MYNAME, strerror(errno), errno);
- exit(5);
- }
- close(con_fd);
- }
-
- tm->tm_sec = t.sec;
- tm->tm_min = t.min;
- tm->tm_hour = t.hour;
- tm->tm_mday = t.day;
- tm->tm_mon = t.mon;
- tm->tm_year = t.year;
- tm->tm_wday = t.wday;
- tm->tm_isdst = -1; /* Don't know if it's Daylight Savings Time */
-#else
- /* This routine should never be invoked. It is here just to make the
- program compile.
- */
-#endif
-}
-
-
-
-void
-set_hardware_clock_kd(const struct tm new_broken_time,
- const bool testing) {
-/*----------------------------------------------------------------------------
- Set the Hardware Clock to the time <new_broken_time>. Use ioctls to
- /dev/tty1 on what we assume is an m68k machine.
-
- Note that we don't use /dev/console here. That might be a serial console.
-----------------------------------------------------------------------------*/
-#ifdef KDGHWCLK
- int con_fd; /* File descriptor of /dev/tty1 */
- struct hwclk_time t;
-
- con_fd = open("/dev/tty1", O_RDONLY);
- if (con_fd < 0) {
- fprintf(stderr, "%s: Error opening /dev/tty1. Errno: %s (%d)\n",
- MYNAME, strerror(errno), errno);
- exit(1);
- } else {
- int rc; /* locally used return code */
-
- t.sec = new_broken_time.tm_sec;
- t.min = new_broken_time.tm_min;
- t.hour = new_broken_time.tm_hour;
- t.day = new_broken_time.tm_mday;
- t.mon = new_broken_time.tm_mon;
- t.year = new_broken_time.tm_year;
- t.wday = new_broken_time.tm_wday;
-
- if (testing)
- printf("Not setting Hardware Clock because running in test mode.\n");
- else {
- rc = ioctl(con_fd, kdshwclk_ioctl, &t );
- if (rc < 0) {
- fprintf(stderr, "%s: ioctl() to open /dev/tty1 failed. "
- "Errno: %s (%d)\n",
- MYNAME, strerror(errno), errno);
- exit(1);
- }
- }
- close(con_fd);
- }
-#else
- /* This function should never be invoked. It is here just to make the
- program compile.
- */
-#endif
-}
-
-
-
-void
-see_if_kdghwclk_works(bool * const kdghwclk_works_p) {
-/*----------------------------------------------------------------------------
- Find out if we are capable of accessing the Hardware Clock via the
- KDHWCLK facility (ioctl to /dev/tty1).
------------------------------------------------------------------------------*/
- if (got_kdghwclk) {
- int con_fd;
- struct hwclk_time t;
-
- con_fd = open("/dev/tty1", O_RDONLY);
- if (con_fd >= 0) {
- if (ioctl( con_fd, kdghwclk_ioctl, &t ) >= 0)
- *kdghwclk_works_p = TRUE;
- else {
- if (errno == EINVAL) {
- /* KDGHWCLK not implemented in this kernel... */
- *kdghwclk_works_p = FALSE;
- if (debug)
- printf(MYNAME "was built with KDGHWCLK capability, but the "
- "ioctl does not exist in the kernel. The ioctl (to "
- "/dev/tty1) failed with errno EINVAL.\n");
- } else {
- *kdghwclk_works_p = FALSE;
- fprintf(stderr,
- "%s: KDGHWCLK ioctl failed, errno = %s (%d).\n",
- MYNAME, strerror(errno), errno);
- }
- }
- } else {
- *kdghwclk_works_p = FALSE;
- fprintf(stderr,
- "%s: Can't open /dev/tty1. open() errno = %s (%d).\n",
- MYNAME, strerror(errno), errno);
- }
- close(con_fd);
- } else *kdghwclk_works_p = FALSE;
-}
-
-
-
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-10 14:48:39 +0200