1 | // SPDX-License-Identifier: GPL-3.0-or-later |
2 | |
3 | #include "mosapi.h" |
4 | |
5 | #define dirent_next(d) ((struct dirent *) ((char *) d + d->d_reclen)) |
6 | static size_t depth = 1; |
7 | |
8 | static void print_entry(const struct dirent *dirent) |
9 | { |
10 | for (size_t i = 0; i < depth; i++) |
11 | printf(format: " " ); |
12 | printf(format: "%s\n" , dirent->d_name); |
13 | } |
14 | |
15 | static void do_tree(void) |
16 | { |
17 | const fd_t dirfd = open(path: "." , flags: OPEN_READ | OPEN_DIR); |
18 | if (dirfd < 0) |
19 | { |
20 | fprintf(stderr, format: "failed to open directory\n" ); |
21 | return; |
22 | } |
23 | |
24 | char buffer[1024]; |
25 | do |
26 | { |
27 | size_t sz = syscall_vfs_list_dir(fd: dirfd, buffer, buffer_size: sizeof(buffer)); |
28 | if (sz == 0) |
29 | break; |
30 | |
31 | for (const struct dirent *dirent = (struct dirent *) buffer; (char *) dirent < buffer + sz; dirent = dirent_next(dirent)) |
32 | { |
33 | if (dirent->d_type == FILE_TYPE_DIRECTORY) |
34 | { |
35 | if (strcmp(str1: dirent->d_name, str2: "." ) == 0 || strcmp(str1: dirent->d_name, str2: ".." ) == 0) |
36 | continue; |
37 | |
38 | print_entry(dirent); |
39 | depth++; |
40 | chdir(path: dirent->d_name); |
41 | do_tree(); |
42 | chdir(path: ".." ); |
43 | depth--; |
44 | } |
45 | else |
46 | { |
47 | print_entry(dirent); |
48 | } |
49 | } |
50 | |
51 | } while (true); |
52 | |
53 | syscall_io_close(fd: dirfd); |
54 | } |
55 | |
56 | int main(int argc, char **argv) |
57 | { |
58 | if (argc > 2) |
59 | { |
60 | fprintf(stderr, format: "too many arguments\n" ); |
61 | fprintf(stderr, format: "usage: %s [path]\n" , argv[0]); |
62 | return 1; |
63 | } |
64 | |
65 | // argv[1] may contain the path to list |
66 | const char *path = argc > 1 ? argv[1] : "." ; |
67 | |
68 | if (!chdir(path)) |
69 | { |
70 | fprintf(stderr, format: "failed to chdir to '%s'\n" , path); |
71 | return 1; |
72 | } |
73 | |
74 | printf(format: "%s\n" , path); |
75 | do_tree(); |
76 | return 0; |
77 | } |
78 | |