[RELEASE] flxutils-0.1.4.2v0.1.4.2

4 files changed, 76 insertions, 0 deletions

diff --git a/findcdrom/Makefile b/findcdrom/Makefile
new file mode 100644
index 0000000..dd663c6
--- /dev/null
+++ b/findcdrom/Makefile
@@ -0,0 +1,3 @@
+OBJS=findcdrom findcdrom-debug
+include ../include/rules.make
+CFLAGS+=-fomit-frame-pointer
diff --git a/findcdrom/findcdrom b/findcdrom/findcdrom
new file mode 100755
index 0000000..ca03e7d
--- /dev/null
+++ b/findcdrom/findcdrom
diff --git a/findcdrom/findcdrom-debug b/findcdrom/findcdrom-debug
new file mode 100755
index 0000000..116ad95
--- /dev/null
+++ b/findcdrom/findcdrom-debug
diff --git a/findcdrom/findcdrom.c b/findcdrom/findcdrom.c
new file mode 100644
index 0000000..3c99b34
--- /dev/null
+++ b/findcdrom/findcdrom.c
@@ -0,0 +1,73 @@
+#include <fcntl.h>
+
+#ifdef DEBUG
+#  define PRINTF printf
+#else
+#  define PRINTF(...) 
+#endif
+
+// RETURN VALUE:
+// 0 : ok
+// 1 : no file /proc/sys/dev/cdrom
+// 2 : failed to chdir /dev 
+// 3 : cdrom found but cannot creat /dev/cdrom
+// 4 : no cdrom data found
+
+
+int main() {
+  int fd,fd2,s,t=0;
+  char tmp[4096],buff[4096],*p,*f;
+  static const char nocdrom[]="No CDROM found\n";
+
+  // find CDROM detection in /proc/sys/dev/cdrom/info
+  if ((fd=open("/proc/sys/dev/cdrom/info",O_RDONLY)) < 0) {
+    write(2,nocdrom,sizeof(nocdrom));
+    exit(1);
+  }
+  if (chdir("/dev")) { 
+    PRINTF("Cannot chdir to /dev\n");
+    exit(2);
+  }
+  // looking for "driver name:"
+  while ((s=read(fd,tmp+t,4096-t)) > 0) {
+    t+=s;
+    if ((p=(char*)strstr(tmp,"\ndrive name:")) && strchr(p+=13,'\n')) {
+      // have found it, looking for drive name(s)
+      while (*p != '\n') {
+        while (*p == ' ' || *p == '\t') p++;
+        for (f=p;*f > ' ' ; f++) ;
+        if (*f == '\n') *f=0; else *f++=0; 
+        // found and now try
+        PRINTF("Trying [%s]\n",p);
+        if ((fd2=open(p,O_RDONLY)) >= 0) {
+          // read a small packet to detect valid iso9660
+          if (read(fd2,buff,4096) > 0) {
+            close(fd2);
+            close(fd);
+            // creat the symbolic link to /dev/cdrom
+            if (symlink(p,"cdrom") == 0) {
+#ifdef DEBUG
+              write(2,"  ",2);
+#endif
+              write(2,"Found CDROM: ",13);
+              write(2,p,strlen(p)); 
+              write(2,"\n",1);
+              exit(0);
+            }
+            exit(3);
+          } 
+          PRINTF("  read failed\n");
+          close(fd2);
+        } else {
+          PRINTF("  open failed\n");
+        }
+        p=f;
+      }
+      break;
+    }
+  }
+  if (s >= 0) close(fd);
+  write(2,nocdrom,sizeof(nocdrom));
+  return (4);
+}
+