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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;
void
pname(char *n)
{
int i;
for(i = 0; (i < DIRSIZ) && (n[i] != '\0') ; i++) {
printf(1, "%c", n[i]);
}
for(; i < DIRSIZ; i++)
printf(1, " ");
}
int
main(int argc, char *argv[])
{
int fd;
uint off;
uint sz;
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 %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();
}
switch(st.type) {
case T_FILE:
pname(argv[1]);
printf(1, "%d %d %d\n", st.type, st.ino, st.size);
break;
case T_DIR:
sz = st.size;
for(off = 0; off < sz; off += sizeof(struct dirent)) {
if(read(fd, &dirent, sizeof dirent) != sizeof 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;
}
pname(dirent.name);
printf(1, "%d %d %d\n", st.type, dirent.inum, st.size);
}
}
break;
}
close(fd);
exit();
}
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