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95 lines
2.4 KiB
95 lines
2.4 KiB
2 years ago
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#include "user_lib.h"
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#include "util/string.h"
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#include "util/types.h"
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void ls(char *path) {
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int dir_fd = opendir_u(path);
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printu("------------------------------\n");
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printu("ls \"%s\":\n", path);
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printu("[name] [inode_num]\n");
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struct dir dir;
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int width = 20;
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while(readdir_u(dir_fd, &dir) == 0) {
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// we do not have %ms :(
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char name[width + 1];
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memset(name, ' ', width + 1);
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name[width] = '\0';
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if (strlen(dir.name) < width) {
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strcpy(name, dir.name);
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name[strlen(dir.name)] = ' ';
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printu("%s %d\n", name, dir.inum);
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}
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else
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printu("%s %d\n", dir.name, dir.inum);
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}
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printu("------------------------------\n");
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closedir_u(dir_fd);
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}
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int main(int argc, char *argv[]) {
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int MAXBUF = 512;
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char str[] = "hello world";
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char buf[MAXBUF];
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int fd1, fd2;
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printu("\n======== establish the file ========\n");
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fd1 = open("/RAMDISK0/ramfile", O_RDWR | O_CREAT);
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printu("create file: /RAMDISK0/ramfile\n");
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close(fd1);
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printu("\n======== Test 1: hard link ========\n");
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link_u("/RAMDISK0/ramfile", "/RAMDISK0/ramfile2");
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printu("create hard link: /RAMDISK0/ramfile2 -> /RAMDISK0/ramfile\n");
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fd1 = open("/RAMDISK0/ramfile", O_RDWR);
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fd2 = open("/RAMDISK0/ramfile2", O_RDWR);
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printu("file descriptor fd1 (ramfile): %d\n", fd1);
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printu("file descriptor fd2 (ramfile2): %d\n", fd2);
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// check the number of hard links to ramfile on disk
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struct istat st;
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disk_stat_u(fd1, &st);
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printu("ramfile hard links: %d\n", st.st_nlinks);
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if (st.st_nlinks != 2) {
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printu("ERROR: the number of hard links to ramfile should be 2, but it is %d\n",
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st.st_nlinks);
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exit(-1);
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}
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write_u(fd1, str, strlen(str));
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printu("/RAMDISK0/ramfile write content: \n%s\n", str);
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read_u(fd2, buf, MAXBUF);
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printu("/RAMDISK0/ramfile2 read content: \n%s\n", buf);
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close(fd1);
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close(fd2);
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printu("\n======== Test 2: unlink ========\n");
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ls("/RAMDISK0");
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unlink_u("/RAMDISK0/ramfile");
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printu("unlink: /RAMDISK0/ramfile\n");
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ls("/RAMDISK0");
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// check the number of hard links to ramfile2 on disk
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fd2 = open("/RAMDISK0/ramfile2", O_RDWR);
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disk_stat_u(fd2, &st);
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printu("ramfile2 hard links: %d\n", st.st_nlinks);
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if (st.st_nlinks != 1) {
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printu("ERROR: the number of hard links to ramfile should be 1, but it is %d\n",
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st.st_nlinks);
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exit(-1);
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}
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close(fd2);
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printu("\nAll tests passed!\n\n");
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exit(0);
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return 0;
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}
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