Си на Linux. Создание процесса демона

#include<stdio.h>
#include<sys/wait.h>
#include<unistd.h>
#include<sys/stat.h>
#include<stdlib.h>
#include<fcntl.h>
#define fsizen 14
 
int main(int argc, char* argv[])
{
    int fd[2], fif, rdes;
    int resnum;
    pid_t pid;
    if(pipe(fd) < 0)
{
    printf("Eror pipe\n");
    exit(6);
}
    if((pid = fork()) < 0){
printf("Eror fork: \n");
exit(2);
    }else if(pid > 0)
    {
        printf("pid = %d \n", pid);
 
close(fd[1]);
printf("close fd[1]\n");
char name[100];
if((rdes = read(fd[0], name, 100)) == -1)
{
    printf("eror read name\n");
}
else
    printf("Read file %s\n", name);
}
    FILE *infile;
    char *namefile;
    char inbuf[100];
    namefile = name;
    infile = fopen(namefile, "r");
    if(infile == NULL)
    {
         printf("Error open file\n");
         exit(-2);
    }
    int sizefile = fseek(infile, 0, SEEK_END);
    sizefile = ftell(infile);
    printf("sizefile = %d \n", sizefile);
    fseek(infile, 0, SEEK_SET);
    if(fread(inbuf, sizeof(char), sizefile, infile)!= sizefile)
    {
        fclose(infile);
        printf("Файл пустой\n");
        exit(-3);
    }
    int i, result;
    for( i = 0; i < sizefile; i++)
    {
        if( inbuf[i] == 0x0A)
            result++;
    }
        if((fif = open("fifo", O_WRONLY)) == -1)
    {
printf("Eror open chanel fifo");
exit(1);
    }
    size_t wr;
    int b[1];
    b[0] = result;
if((wr = write(fif, b, 100)) == -1)
{
    printf("Eror write into fifo-chanel\n");
}
pid = wait(0);
    }
    else
    {
        if((fif = open("fifo", O_RDONLY)) == -1)
    {
printf("Eror open chanel fifo");
exit(1);
    }
ssize_t w, r;
printf("Close fd[0]\n");
close(fd[0]);
 
if((w = write(fd[1], argv[1], fsizen)) == -1)
{
    printf("Eror write info in fd[1]\n");
}
int a[1];
 
if((r = read(fif, a, fsizen)) == -1)
{
    printf("Eror read fifo-chanel\n");
}
printf("Number of strings in %s: %d\n", argv[1], a[0] + 1);
    }
    return 0;
}