44 lines
786 B
C
44 lines
786 B
C
#include "types.h"
|
|
#include "stat.h"
|
|
#include "user.h"
|
|
#include "fs.h"
|
|
|
|
char buf[512];
|
|
struct stat stat;
|
|
struct dirent dirent;
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int fd;
|
|
uint off;
|
|
|
|
if(argc > 1){
|
|
puts("Usage: ls\n");
|
|
exit();
|
|
}
|
|
|
|
fd = open(".", 0);
|
|
if(fd < 0){
|
|
printf(2, "ls: cannot open .\n");
|
|
exit();
|
|
}
|
|
if (fstat(fd, &stat) < 0) {
|
|
printf(2, "ls: cannot open .\n");
|
|
exit();
|
|
}
|
|
if (stat.st_type != T_DIR) {
|
|
printf(2, "ls: . is not a dir\n");
|
|
}
|
|
for(off = 0; off < stat.st_size; off += sizeof(struct dirent)) {
|
|
if (read(fd, &dirent, sizeof(struct dirent)) != sizeof(struct dirent)) {
|
|
printf(2, "ls: read error\n");
|
|
exit();
|
|
}
|
|
if (dirent.inum != 0)
|
|
printf(1, "%s\n", dirent.name);
|
|
}
|
|
close(fd);
|
|
|
|
exit();
|
|
}
|