X-Git-Url: http://dolda2000.com/gitweb/?p=utils.git;a=blobdiff_plain;f=serialize.c;fp=serialize.c;h=4a851b1683ec74cf05b3e40a8cf4df2991404689;hp=0000000000000000000000000000000000000000;hb=21e62b992c09d307c38a58dbfc6ae9a23de82128;hpb=d740b990e5e6202dc9f4b5976de67342504add62

diff --git a/serialize.c b/serialize.c
new file mode 100644
index 0000000..4a851b1
--- /dev/null
+++ b/serialize.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/file.h>
+
+int main(int argc, unsigned char **argv)
+{
+    int c;
+    int fd, locktype;
+    pid_t pid;
+    int status;
+    
+    locktype = LOCK_EX;
+    while((c = getopt(argc, argv, "se")) > 0)
+    {
+	switch(c)
+	{
+	case 's':
+	    locktype = LOCK_SH;
+	    break;
+	case 'e':
+	    locktype = LOCK_EX;
+	    break;
+	default:
+	    return(1);
+	}
+    }
+    if(argc - optind < 2)
+    {
+	fprintf(stderr, "Wrong number of arguments\n");
+	return(1);
+    }
+    if((fd = open(argv[optind], O_RDWR | O_CREAT, 0600)) < 0)
+    {
+	perror(argv[optind]);
+	return(1);
+    }
+    optind++;
+    flock(fd, locktype);
+    if((pid = fork()) < 0)
+    {
+	perror("fork");
+	return(1);
+    } else if(!pid) {
+	execvp(argv[optind], argv + optind);
+	perror(argv[optind]);
+	exit(127);
+    }
+    while(wait(&status) != pid);
+    flock(fd, LOCK_UN);
+    return(status);
+}