52 lines
764 B
C
52 lines
764 B
C
#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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int readFile(){
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int fd2 = open("./test/fileat", O_RDONLY);
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if(fd2 < 0){
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printf("Error in opening file fileat\n");
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return -1;
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}
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char buff2[1024];
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ssize_t rbit = read(fd2, buff2, 1024);
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if(rbit < 0){
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printf("Error in reading file fileat\n");
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return -1;
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}
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buff2[rbit] = 0;
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printf("rbit: %ld %s", rbit, buff2);
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close(fd2);
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return 0;
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}
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int main(void){
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int fd = open("./test/fileat", O_RDWR | O_APPEND);
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char buff[] = "Helloworld";
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ssize_t wbit = write(fd, buff, sizeof(buff));
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if(wbit != sizeof(buff)){
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printf("Error occur when wrote file fileat\n");
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return -1;
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}
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readFile();
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fsync(fd);
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readFile();
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close(fd);
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return 0;
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}
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