linux - Using mknod on Ubuntu in c program -

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i trying make c program using mknod command like

#include<stdio.h> #include<fcntl.h> #include<string.h>  char info[50];  main() {     int fdr;     int rc = mknod("testfile",'b',0);     if(rc<0) {         perror("error in mnod");     }     fdr=open("testfile",o_rdonly);     read(fdr,info,50);     printf("\n received message=%s",info);     printf("\n"); }

and stuff. works on red hat system, fails on ubuntu giving error invalid argument.

mknod deprecated; should not using it. if want create fifo, use standard mkfifo. if want create ordinary file, use creat or open o_creat. yes mknod can create device nodes, , on systems might still way it, on modern linux system rely on kernel and/or udevd handle this.


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