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#include "types.h"
#include "stat.h"
#include "user.h"
#include "fs.h"
char buf[512];
struct stat st;
struct dirent dirent;
int
main(int argc, char *argv[])
{
int fd;
uint off;
uint sz;
int i;
if(argc > 2){
puts("Usage: ls [dir]\n");
exit();
}
if (argc == 2) {
fd = open(argv[1], 0);
if(fd < 0){
printf(2, "ls: cannot open dir %s\n", argv[1]);
exit();
}
} else {
fd = open(".", 0);
if(fd < 0){
printf(2, "ls: cannot open .\n");
exit();
}
}
if (fstat(fd, &st) < 0) {
printf(2, "ls: cannot stat dir\n");
exit();
}
if (st.st_type != T_DIR) {
printf(2, "ls: dir is not a directory\n");
}
sz = st.st_size;
for(off = 0; off < sz; off += sizeof(struct dirent)) {
if (read(fd, &dirent, sizeof(struct dirent)) != sizeof(struct dirent)) {
printf(1, "ls: read error\n");
break;
}
if (dirent.inum != 0) {
// xxx prepend to name the pathname supplied to ls (e.g. .. in ls ..)
if (stat (dirent.name, &st) < 0) {
printf(1, "stat: failed %s\n", dirent.name);
continue;
}
for (i = 0; i < DIRSIZ; i++) {
if (dirent.name[i] != '\0')
printf(1, "%c", dirent.name[i]);
else
printf(1, " ");
}
printf(1, "%d %d %d\n", st.st_type, dirent.inum, st.st_size);
}
}
close(fd);
exit();
}
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