file_descriptors / adhoc_open_directory-int.trace

Checked Trace
linux_spec@[/nix/store/fxisrpncjn4cxxwnq2lvilriqx63s9k9-fs_test]	sexp	stdout	stderr

Traced Execution	stdout	stderr

Script	script

1	# processing file 'adhoc_open_directory-int.trace' ...
2	@type trace
3
4	# #############################################
5	# O_DIRECTORY
6	# #############################################
7
8	mkdir "d1" 0o755
9	Tau
10	RV_none
11
12	# open directory for searching
13	open "d1" [O_RDONLY]
14	Tau
15	RV_num(3)
16	read (FD 3) 100
17	Tau
18	EISDIR
19	close (FD 3)
20	Tau
21	RV_none
22
23	# using O_DIRECTORY with dirs is fine
24	# but we can't do anything afterwards :-)
25	open "d1" [O_RDONLY;O_DIRECTORY]
26	Tau
27	RV_num(3)
28	read (FD 3) 100
29	Tau
30	EISDIR
31	close (FD 3)
32	Tau
33	RV_none
34
35	# using O_DIRECTORY with files fails
36	open_close "f1.txt" [O_RDONLY;O_CREAT] 0o600
37	Tau
38	RV_none
39	open "f1.txt" [O_RDONLY;O_DIRECTORY]
40	Tau
41	RV_num(3)
42	read (FD 3) 100
43	Tau
44	RV_bytes("")
45	close (FD 3)
46	Tau
47	RV_none
48
49	# using O_DIRECTORY on non-existing files
50	open "no-such-file.txt" [O_RDONLY;O_DIRECTORY]
51	Tau
52	ENOENT
53	read (FD 3) 100
54	Tau
55	EBADF
56	close (FD 3)
57	Tau
58	EBADF
59
60	# using O_DIRECTORY on non-existing dir
61	open "/no-such-dir/" [O_RDONLY;O_DIRECTORY]
62	Tau
63	ENOENT
64	read (FD 3) 100
65	Tau
66	EBADF
67	close (FD 3)
68	Tau
69	EBADF
70
71	# we can't create directories
72	open "/no-such-dir/" [O_RDONLY;O_DIRECTORY;O_CREAT] 0o700
73	Tau
74	EISDIR
75	read (FD 3) 100
76	Tau
77	EBADF
78	close (FD 3)
79	Tau
80	EBADF
81
82	open "/no-such-dir/" [O_RDONLY;O_CREAT] 0o700
83	Tau
84	EISDIR
85	read (FD 3) 100
86	Tau
87	EBADF
88	close (FD 3)
89	Tau
90	EBADF
91
92