initial files

.gitignore

+html/*
+attic/*
+.project
+.cproject
+.pydevproject
+.settings
+*.directory
+generated*
+sysroots
+bitbake-logs
\ No newline at end of file

Makefile

+PROGS      = autocampars launch_php_script
+PHPSCRIPTS = autocampars.php
+SRCS       = autocampars.c launch_php_script.c
+OBJS =       $(SRC:.c=.o)
+#OBJS       = autocampars.o launch_php_script.o
+
+
+BINDIR       = $(DESTDIR)/usr/bin/
+SYSCONFDIR   = $(DESTDIR)/etc/
+DOCUMENTROOT = $(DESTDIR)/www/pages
+
+INSTALL    = install
+INSTMODE   = 0755
+INSTDOCS   = 0644
+OWN =        -o root -g root
+
+INCDIR     = $(STAGING_DIR_HOST)/usr/include-uapi/elphel
+CFLAGS   += -Wall -I$(INCDIR)
+
+all: $(PROGS)
+
+$(PROGS): $(OBJS)
+	$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
+
+install: $(PROGS)
+	$(INSTALL) -d $(BINDIR)
+	$(INSTALL) -d $(DOCUMENTROOT)
+	$(INSTALL) -d $(SYSCONFDIR)
+	$(INSTALL) $(OWN) -m $(INSTMODE) $(PROGS) $(BINDIR)
+	$(INSTALL) $(OWN) -m $(INSTMODE) $(PHPSCRIPTS)  $(DOCUMENTROOT)
+
+clean:
+	rm -rf $(PROGS) *.o core
+configsubs:
+

VERSION

+1.0 

autocampars.c

+/*!***************************************************************************
+*! FILE NAME  : autocampars.c
+*! DESCRIPTION: Daemon to save/restore parameter (calls autocampars.php)
+*!              This program is needed not to have an extra instance of
+*!              PHP (2+ MB) just waiting as a daemon.
+*! Copyright (C) 2008 Elphel, Inc.
+*! -----------------------------------------------------------------------------**
+*!  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 3 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, see <http://www.gnu.org/licenses/>.
+*! -----------------------------------------------------------------------------**
+*!
+*!  $Log: autocampars.c,v $
+*!  Revision 1.2  2008/12/08 08:13:37  elphel
+*!  added one more error check
+*!
+*!  Revision 1.1.1.1  2008/11/27 20:04:01  elphel
+*!
+*!
+*!  Revision 1.4  2008/11/22 05:52:47  elphel
+*!  added TODO
+*!
+*!  Revision 1.3  2008/11/18 07:37:10  elphel
+*!  snapshot
+*!
+*!  Revision 1.2  2008/11/17 23:42:59  elphel
+*!  snapshot
+*!
+*!  Revision 1.1  2008/11/17 06:41:20  elphel
+*!  8.0.alpha18 - started autocampars - camera parameters save/restore/init manager
+*!
+*!
+*/ 
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <asm/elphel/c313a.h>
+int main (int argc, char *argv[]) {
+  const char framepars_driver_name[]="/dev/frameparsall";
+//  const char php_path[]="/usr/local/sbin/php";
+  const char script_path[]="/usr/html/autocampars.php";
+  int fd_fparmsall= open(framepars_driver_name, O_RDWR);
+  unsigned long write_data[4]; 
+  int rslt;
+  if (fd_fparmsall <0) {
+     ELP_FERR(fprintf(stderr, "Open failed: (%s)\n", framepars_driver_name));
+     exit (1);
+  }
+///TODO: Use it to re-running ccamftp.php
+/// see if any arguments are provided. If they are - they are bit number, sleep time in seconds and command/arguments of an external program
+/// to be launched. Usually - a php script, so it makes sense not to keep the php instance in memory if it is not used most of the time
+/// (done so for ccamftp.php)
+///
+/// Daemon loop - waiting for being enabled, run autocampars.php
+/// NOTE: Requires sequencers and sensor to be running, to reset everything if stuck - use autocampars.php directly
+  int pid;
+  while (1) {
+   lseek(fd_fparmsall, LSEEK_DAEMON_FRAME+DAEMON_BIT_AUTOCAMPARS, SEEK_END);   /// wait for autocampars bit to be enabled (let it sleep if not)
+   write_data[0]= FRAMEPARS_SETFRAMEREL;
+   write_data[1]= 1;
+   write_data[2]= P_DAEMON_EN_AUTOCAMPARS;
+   write_data[3]= 0;
+   rslt=write(fd_fparmsall, write_data, sizeof(write_data));
+   if (rslt < sizeof(write_data)) {
+     ELP_FERR(fprintf(stderr, "Failed writing to %s\n", framepars_driver_name));
+     exit (1); 
+   }
+   fprintf(stderr, "autocampars triggered\n");
+   signal(SIGCHLD, SIG_IGN); // no zombies
+//! do we need any fork at all if we now serve images to one client at a time? 
+   if (((pid=fork())) <0) { /// error
+     ELP_FERR(fprintf(stderr, "fork() failed\n"));
+     exit (1);
+   } else if (pid == 0) { /// child
+       fflush(stdout);
+       fflush(stderr);
+//       rslt= execl(php_path, "-q", script_path, "", "--daemon", (char *) NULL); /// We do not need to pass any parameters here, but if we had to - first argument is lost (probably to "-q" in the script line 1
+       rslt= execl(script_path, "", "--daemon", (char *) NULL); /// We do not need to pass any parameters here, but if we had to - first argument is lost (probably to "-q" in the script line 1
+       ELP_FERR(fprintf(stderr, "execl failed, returned %d, errno=%d\n", rslt,errno));
+      _exit(2);/// comes here only if error
+   } // end of child process
+   lseek(fd_fparmsall, LSEEK_FRAME_WAIT_REL+1, SEEK_END);   /// skip 1 frame before returning
+  }
+  return 0;
+}
+

launch_php_script.c

+/*!***************************************************************************
+*! FILE NAME  : launch_php_script.c
+*! DESCRIPTION: Companion to PHP scripts used as daemons (currently camftp.php)
+*!              to save memory when script is disabled. When the specidied bit
+*!              is set in P_DAEMON_EN it launches the script and waits for it
+*!              to finish, then sleeps (if the enable bit is off)
+*!              The script is supposed to monitor enable bit and termonate when
+*!              it is off
+*! Copyright (C) 2008 Elphel, Inc.
+*! -----------------------------------------------------------------------------**
+*!  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 3 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, see <http://www.gnu.org/licenses/>.
+*! -----------------------------------------------------------------------------**
+*!
+*!  $Log: launch_php_script.c,v $
+*!  Revision 1.1  2008/12/08 08:12:42  elphel
+*!  added launch_php_script - a companion program to the php scripts used as daemons (like ccamftp.php) - it is used to reduce memory footprint when daemon is disabled
+*!
+*!
+*/ 
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+#include <asm/elphel/c313a.h>
+int main (int argc, char *argv[]) {
+  if (argc < 3) {
+    printf ("  This is a companion program that works with PHP scripts to make a daemon,\n"
+            "conserving memory footprint when disabled.\n"
+            "It waits for the the specified bit in the global daemon control word (P_DAEMON_EN)\n"
+            "to be set (using driver functionality) and then launches the specified script\n"
+            "with optional parameters, blocking itself until the script terminates.\n\n"
+            "  After that it sleeps again until the bit is reenabled (normally script exits\n"
+            "when this bit is cleared) and launches the script again. That reduces memory usage\n"
+            "when the script is disabled - no need to keep PHP interpreter in teh memory (>2MB)\n\n"
+            "Usage:\n"
+            "%s <bit_number> <command> [<parameter>...]\n",argv[0]);
+            exit (1);
+  }
+  int pid, status;
+  int en_bit=strtol(argv[1], NULL, 10);
+  if ((en_bit<0) || (en_bit>31)) {printf ("Invalid bit number %d (should be 0..31)\n", en_bit); exit (1);}
+
+  const char framepars_driver_name[]="/dev/frameparsall";
+  int fd_fparmsall= open(framepars_driver_name, O_RDONLY);
+  int rslt;
+  if (fd_fparmsall <0) {
+     ELP_FERR(fprintf(stderr, "Open failed: (%s)\n", framepars_driver_name));
+     exit (1);
+  }
+/// Daemon loop - waiting for being enabled, run script
+//int execv(const char *path, char *const argv[]);
+  while (1) {
+   lseek(fd_fparmsall, LSEEK_DAEMON_FRAME+en_bit, SEEK_END);   /// wait for the specified bit in P_DAEMON_EN to be enabled (and sleep while not)
+   signal(SIGCHLD, SIG_IGN); // no zombies
+//! do we need any fork at all if we now serve images to one client at a time? 
+   if (((pid=fork())) <0) { /// error
+     ELP_FERR(fprintf(stderr, "fork() failed\n"));
+     exit (1);
+   } else if (pid == 0) { /// child
+       fflush(stdout);
+       fflush(stderr);
+       rslt= execv(argv[2], &argv[2]); /// script path, all parameters starting with the script path
+       ELP_FERR(fprintf(stderr, "execl failed, returned %d, errno=%d\n", rslt,errno));
+      _exit(2);/// comes here only if error
+   } /// Only parent will get below here
+   wait(&status); // always returns -1, errno=10 -  no child processes
+///   lseek(fd_fparmsall, LSEEK_FRAME_WAIT_REL+1, SEEK_END);   /// skip 1 frame before returning
+  }
+  return 0; ///will never get here
+}

run_bitbake.sh

+#!/bin/bash
+args="$@"
+while (( "$#" )); do
+  shift
+done
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+echo "Launching bitbake $args"
+cd $DIR/../../poky
+. ./oe-init-build-env
+bitbake $args  | sed -u 's@| @@'
+exit 0