C 利用strtok, feof 截取字符串

#cat  /tmp/fff
10:hugetlb:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
9:devices:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
8:perf_event:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
7:cpuacct,cpu,cpuset:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
6:memory:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
4:freezer:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
3:intel_rdt:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
2:blkio:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18
1:name=systemd:/hello/06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18

#cat gg.c
#include <stdio.h>
#include <string.h>
#include <errno.h>
 int main()
 {
     char filename[] = "/tmp/fff";
     FILE *fp = NULL;
     char newline[128];
	 char *keyword = "cpuset";
	 char final1[64];
	 char *delim = "/";
	 char *p = NULL;
	 char final2[12];
	 int length = 12;

     if((fp = fopen(filename,"r")) == NULL)
     {
         printf("error!");
         return -1;
     }

     while (!feof(fp))
     {
         fgets(newline, 128, fp);

		 if (strstr(newline, keyword)) {
			strtok(newline, delim);
			while((p = strtok(NULL, delim))) {
				strcpy(final1, p);
			}
			printf("final1:%s\n", final1);
			break;
		 }
     }

	strncpy(final2, final1, length);
   	printf("final2:%s\n", final2);
	fclose(fp);
	return 0;
 }

#./gg
final1:06b11c9967cc0e106f5f4673246f671aa7388f623f58b250d9d9cb0f8c0f2b18

final2:06b11c9967cc