d7b3b802f4
shell parses arguments (very simplistic) readme version of README (sh doesn't deal with capital characters) printf recognizes %c nicer output format for ls
59 lines
1 KiB
C
59 lines
1 KiB
C
#include "types.h"
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#include "stat.h"
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#include "user.h"
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#include "fs.h"
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char buf[512];
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struct stat st;
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struct dirent dirent;
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int
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main(int argc, char *argv[])
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{
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int fd;
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uint off;
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uint sz;
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int i;
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if(argc > 1){
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puts("Usage: ls\n");
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exit();
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}
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fd = open(".", 0);
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if(fd < 0){
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printf(2, "ls: cannot open .\n");
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exit();
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}
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if (fstat(fd, &st) < 0) {
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printf(2, "ls: cannot open .\n");
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exit();
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}
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if (st.st_type != T_DIR) {
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printf(2, "ls: . is not a dir\n");
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}
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sz = st.st_size;
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for(off = 0; off < sz; off += sizeof(struct dirent)) {
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if (read(fd, &dirent, sizeof(struct dirent)) != sizeof(struct dirent)) {
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printf(1, "ls: read error\n");
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break;
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}
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if (dirent.inum != 0) {
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if (stat (dirent.name, &st) < 0) {
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printf(1, "stat: failed\n");
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break;
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}
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for (i = 0; i < DIRSIZ; i++) {
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if (dirent.name[i] != '\0')
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printf(1, "%c", dirent.name[i]);
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else
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printf(1, " ");
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}
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printf(1, "%d %d %d\n", st.st_type, dirent.inum, st.st_size);
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}
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}
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close(fd);
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exit();
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}
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