libmcrypt: moved to github
[openwrt.org/packages.git] / utils / 001-source.patch
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diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..a2660a2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,27 @@
+TARGETS = ppstest ppsctl
+
+CFLAGS += -Wall -O2 -D_GNU_SOURCE
+CFLAGS += -I .
+CFLAGS += -ggdb
+
+# -- Actions section ----------------------------------------------------------
+
+.PHONY : all depend dep
+
+all : .depend $(TARGETS)
+
+.depend depend dep :
+       $(CC) $(CFLAGS) -M $(TARGETS:=.c) > .depend
+
+ifeq (.depend,$(wildcard .depend))
+include .depend
+endif
+
+
+# -- Clean section ------------------------------------------------------------
+
+.PHONY : clean
+
+clean :
+       rm -f *.o *~ core .depend
+       rm -f ${TARGETS}
diff --git a/ppsctl.c b/ppsctl.c
new file mode 100644
index 0000000..83fd08a
--- /dev/null
+++ b/ppsctl.c
@@ -0,0 +1,62 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <linux/serial.h>
+
+void usage(char *name)
+{
+       fprintf(stderr, "usage: %s <ttyS> [enable|disable]\n", name);
+
+       exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+       int fd;
+       int ret;
+       struct serial_struct ss;
+
+       if (argc < 2)
+               usage(argv[0]);
+
+       fd = open(argv[1], O_RDWR);
+       if (fd < 0) {
+               perror("open");
+               exit(EXIT_FAILURE);
+       }
+
+       ret = ioctl(fd, TIOCGSERIAL, &ss);
+       if (ret < 0) {
+               perror("ioctl(TIOCGSERIAL)");
+               exit(EXIT_FAILURE);
+       }
+
+       if (argc < 3) {         /* just read PPS status */
+               printf("PPS is %sabled\n",
+                      ss.flags & ASYNC_HARDPPS_CD ? "en" : "dis");
+               exit(EXIT_SUCCESS);
+       }
+
+       if (argv[2][0] == 'e' || argv[2][0] == '1')
+               ss.flags |= ASYNC_HARDPPS_CD;
+       else if (argv[2][0] == 'd' || argv[2][0] == '0')
+               ss.flags &= ~ASYNC_HARDPPS_CD;
+       else {
+               fprintf(stderr, "invalid state argument \"%s\"\n", argv[2]);
+               exit(EXIT_FAILURE);
+       }
+
+       ret = ioctl(fd, TIOCSSERIAL, &ss);
+       if (ret < 0) {
+               perror("ioctl(TIOCSSERIAL)");
+               exit(EXIT_FAILURE);
+       }
+
+       return 0;
+}
diff --git a/ppsfind b/ppsfind
new file mode 100755
index 0000000..93c0e17
--- /dev/null
+++ b/ppsfind
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+SYS="/sys/class/pps/"
+
+if [ $# -lt 1 ] ; then
+       echo "usage: ppsfind <name>" >&2
+       exit 1
+fi
+
+for d in $(ls $SYS) ; do
+       if grep $1 $SYS/$d/name >& /dev/null || \
+          grep $1 $SYS/$d/path >& /dev/null ; then
+               echo "$d: name=$(cat $SYS/$d/name) path=$(cat $SYS/$d/path)"
+       fi
+done
+
+exit 0
diff --git a/ppstest.c b/ppstest.c
new file mode 100644
index 0000000..d125ffa
--- /dev/null
+++ b/ppstest.c
@@ -0,0 +1,151 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <timepps.h>
+
+int find_source(char *path, pps_handle_t *handle, int *avail_mode)
+{
+       pps_params_t params;
+       int ret;
+
+       printf("trying PPS source \"%s\"\n", path);
+
+       /* Try to find the source by using the supplied "path" name */
+       ret = open(path, O_RDWR);
+       if (ret < 0) {
+               fprintf(stderr, "unable to open device \"%s\" (%m)\n", path);
+               return ret;
+       }
+
+       /* Open the PPS source (and check the file descriptor) */
+       ret = time_pps_create(ret, handle);
+       if (ret < 0) {
+               fprintf(stderr, "cannot create a PPS source from device "
+                               "\"%s\" (%m)\n", path);
+               return -1;
+       }
+       printf("found PPS source \"%s\"\n", path);
+
+       /* Find out what features are supported */
+       ret = time_pps_getcap(*handle, avail_mode);
+       if (ret < 0) {
+               fprintf(stderr, "cannot get capabilities (%m)\n");
+               return -1;
+       }
+       if ((*avail_mode & PPS_CAPTUREASSERT) == 0) {
+               fprintf(stderr, "cannot CAPTUREASSERT\n");
+               return -1;
+       }
+       if ((*avail_mode & PPS_OFFSETASSERT) == 0) {
+               fprintf(stderr, "cannot OFFSETASSERT\n");
+               return -1;
+       }
+
+       /* Capture assert timestamps, and compensate for a 675 nsec
+        * propagation delay */
+       ret = time_pps_getparams(*handle, &params);
+       if (ret < 0) {
+               fprintf(stderr, "cannot get parameters (%m)\n");
+               return -1;
+       }
+       params.assert_offset.tv_sec = 0;
+       params.assert_offset.tv_nsec = 675;
+       params.mode |= PPS_CAPTUREASSERT | PPS_OFFSETASSERT;
+       ret = time_pps_setparams(*handle, &params);
+       if (ret < 0) {
+               fprintf(stderr, "cannot set parameters (%m)\n");
+               return -1;
+       }
+
+       return 0;
+}
+
+int fetch_source(int i, pps_handle_t *handle, int *avail_mode)
+{
+       struct timespec timeout;
+       pps_info_t infobuf;
+       int ret;
+
+       /* create a zero-valued timeout */
+       timeout.tv_sec = 3;
+       timeout.tv_nsec = 0;
+
+retry:
+       if (*avail_mode & PPS_CANWAIT) /* waits for the next event */
+               ret = time_pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf,
+                                  &timeout);
+       else {
+               sleep(1);
+               ret = time_pps_fetch(*handle, PPS_TSFMT_TSPEC, &infobuf,
+                                  &timeout);
+       }
+       if (ret < 0) {
+               if (ret == -EINTR) {
+                       fprintf(stderr, "time_pps_fetch() got a signal!\n");
+                       goto retry;
+               }
+
+               fprintf(stderr, "time_pps_fetch() error %d (%m)\n", ret);
+               return -1;
+       }
+
+       printf("source %d - "
+              "assert %ld.%09ld, sequence: %ld - "
+              "clear  %ld.%09ld, sequence: %ld\n",
+              i,
+              infobuf.assert_timestamp.tv_sec,
+              infobuf.assert_timestamp.tv_nsec,
+              infobuf.assert_sequence,
+              infobuf.clear_timestamp.tv_sec,
+              infobuf.clear_timestamp.tv_nsec, infobuf.clear_sequence);
+
+       return 0;
+}
+
+void usage(char *name)
+{
+       fprintf(stderr, "usage: %s <ppsdev> [<ppsdev> ...]\n", name);
+       exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+       int num;
+       pps_handle_t handle[4];
+       int avail_mode[4];
+       int i = 0;
+       int ret;
+
+       /* Check the command line */
+       if (argc < 2)
+               usage(argv[0]);
+
+       for (i = 1; i < argc && i <= 4; i++) {
+               ret = find_source(argv[i], &handle[i - 1], &avail_mode[i - 1]);
+               if (ret < 0)
+                       exit(EXIT_FAILURE);
+       }
+
+       num = i - 1;
+       printf("ok, found %d source(s), now start fetching data...\n", num);
+
+       /* loop, printing the most recent timestamp every second or so */
+       while (1) {
+               for (i = 0; i < num; i++) {
+                       ret = fetch_source(i, &handle[i], &avail_mode[i]);
+                       if (ret < 0 && errno != ETIMEDOUT)
+                               exit(EXIT_FAILURE);
+               }
+       }
+
+       for (; i >= 0; i--)
+               time_pps_destroy(handle[i]);
+
+       return 0;
+}
diff --git a/timepps.h b/timepps.h
new file mode 100644
index 0000000..28ebf4c
--- /dev/null
+++ b/timepps.h
@@ -0,0 +1,193 @@
+/*
+ * timepps.h -- PPS API main header
+ *
+ * Copyright (C) 2005-2007   Rodolfo Giometti <giometti@linux.it>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _SYS_TIMEPPS_H_
+#define _SYS_TIMEPPS_H_
+
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <errno.h>
+#include <linux/pps.h>
+
+/*
+ * New data structures
+ */
+
+struct ntp_fp {
+       unsigned int integral;
+       unsigned int fractional;
+};
+
+union pps_timeu {
+       struct timespec tspec;
+       struct ntp_fp ntpfp;
+       unsigned long longpad[3];
+};
+
+struct pps_info {
+       unsigned long assert_sequence;  /* seq. num. of assert event */
+       unsigned long clear_sequence;   /* seq. num. of clear event */
+       union pps_timeu assert_tu;      /* time of assert event */
+       union pps_timeu clear_tu;       /* time of clear event */
+       int current_mode;               /* current mode bits */
+};
+
+struct pps_params {
+       int api_version;                /* API version # */
+       int mode;                       /* mode bits */
+       union pps_timeu assert_off_tu;  /* offset compensation for assert */
+       union pps_timeu clear_off_tu;   /* offset compensation for clear */
+};
+
+typedef int pps_handle_t;              /* represents a PPS source */
+typedef unsigned long pps_seq_t;       /* sequence number */
+typedef struct ntp_fp ntp_fp_t;                /* NTP-compatible time stamp */
+typedef union pps_timeu pps_timeu_t;   /* generic data type for time stamps */
+typedef struct pps_info pps_info_t;
+typedef struct pps_params pps_params_t;
+
+#define assert_timestamp        assert_tu.tspec
+#define clear_timestamp         clear_tu.tspec
+
+#define assert_timestamp_ntpfp  assert_tu.ntpfp
+#define clear_timestamp_ntpfp   clear_tu.ntpfp
+
+#define assert_offset          assert_off_tu.tspec
+#define clear_offset           clear_off_tu.tspec
+
+#define assert_offset_ntpfp     assert_off_tu.ntpfp
+#define clear_offset_ntpfp      clear_off_tu.ntpfp
+
+/*
+ * The PPS API
+ */
+
+static __inline int time_pps_create(int source, pps_handle_t *handle)
+{
+       int ret;
+
+       if (!handle) {
+               errno = EINVAL;
+               return -1;
+       }
+
+       /* First we check if current device is a PPS valid PPS one...
+        */
+       ret = ioctl(source, PPS_CHECK);
+       if (ret) {
+               errno = EOPNOTSUPP;
+               return -1;
+       }
+
+       /* ... then since in LinuxPPS there are no differences between a
+        * "PPS source" and a "PPS handle", we simply return the same value.
+        */
+       *handle = source;
+
+       return 0;
+}
+
+static __inline int time_pps_destroy(pps_handle_t handle)
+{
+       return close(handle);
+}
+
+static __inline int time_pps_getparams(pps_handle_t handle,
+                                       pps_params_t *ppsparams)
+{
+       int ret;
+       struct pps_kparams __ppsparams;
+
+       ret = ioctl(handle, PPS_GETPARAMS, &__ppsparams);
+
+       ppsparams->api_version = __ppsparams.api_version;
+       ppsparams->mode = __ppsparams.mode;
+       ppsparams->assert_off_tu.tspec.tv_sec = __ppsparams.assert_off_tu.sec;
+       ppsparams->assert_off_tu.tspec.tv_nsec = __ppsparams.assert_off_tu.nsec;
+       ppsparams->clear_off_tu.tspec.tv_sec = __ppsparams.clear_off_tu.sec;
+       ppsparams->clear_off_tu.tspec.tv_nsec = __ppsparams.clear_off_tu.nsec;
+
+       return ret;
+}
+
+static __inline int time_pps_setparams(pps_handle_t handle,
+                                       const pps_params_t *ppsparams)
+{
+       struct pps_kparams __ppsparams;
+
+       __ppsparams.api_version = ppsparams->api_version;
+       __ppsparams.mode = ppsparams->mode;
+       __ppsparams.assert_off_tu.sec = ppsparams->assert_off_tu.tspec.tv_sec;
+       __ppsparams.assert_off_tu.nsec = ppsparams->assert_off_tu.tspec.tv_nsec;
+       __ppsparams.clear_off_tu.sec = ppsparams->clear_off_tu.tspec.tv_sec;
+       __ppsparams.clear_off_tu.nsec = ppsparams->clear_off_tu.tspec.tv_nsec;
+
+       return ioctl(handle, PPS_SETPARAMS, &__ppsparams);
+}
+
+/* Get capabilities for handle */
+static __inline int time_pps_getcap(pps_handle_t handle, int *mode)
+{
+       return ioctl(handle, PPS_GETCAP, mode);
+}
+
+static __inline int time_pps_fetch(pps_handle_t handle, const int tsformat,
+                                       pps_info_t *ppsinfobuf,
+                                       const struct timespec *timeout)
+{
+       struct pps_fdata __fdata;
+       int ret;
+
+       /* Sanity checks */
+       if (tsformat != PPS_TSFMT_TSPEC) {
+               errno = EINVAL;
+               return -1;
+       }
+
+       if (timeout) {
+               __fdata.timeout.sec = timeout->tv_sec;
+               __fdata.timeout.nsec = timeout->tv_nsec;
+               __fdata.timeout.flags = ~PPS_TIME_INVALID;
+       } else
+               __fdata.timeout.flags = PPS_TIME_INVALID;
+
+       ret = ioctl(handle, PPS_FETCH, &__fdata);
+
+       ppsinfobuf->assert_sequence = __fdata.info.assert_sequence;
+       ppsinfobuf->clear_sequence = __fdata.info.clear_sequence;
+       ppsinfobuf->assert_tu.tspec.tv_sec = __fdata.info.assert_tu.sec;
+       ppsinfobuf->assert_tu.tspec.tv_nsec = __fdata.info.assert_tu.nsec;
+       ppsinfobuf->clear_tu.tspec.tv_sec = __fdata.info.clear_tu.sec;
+       ppsinfobuf->clear_tu.tspec.tv_nsec = __fdata.info.clear_tu.nsec;
+       ppsinfobuf->current_mode = __fdata.info.current_mode;
+
+       return ret;
+}
+
+static __inline int time_pps_kcbind(pps_handle_t handle,
+                                       const int kernel_consumer,
+                                       const int edge, const int tsformat)
+{
+       /* LinuxPPS doesn't implement kernel consumer feature */
+       errno = EOPNOTSUPP;
+       return -1;
+}
+
+#endif                         /* _SYS_TIMEPPS_H_ */
 
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