1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <fcntl.h> |
19 | #include <pthread.h> |
20 | #include <stdbool.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <unistd.h> |
24 | #include <sys/stat.h> |
25 | |
26 | |
27 | static struct |
28 | { |
29 | int (*fp) (const char *, mode_t); |
30 | const char *name; |
31 | bool is_fd; |
32 | } fcts[] = |
33 | { |
34 | { creat, "creat" , true }, |
35 | { mkdir, "mkdir" , false }, |
36 | { mkfifo, "mkfifo" , false }, |
37 | }; |
38 | #define nfcts (sizeof (fcts) / sizeof (fcts[0])) |
39 | |
40 | |
41 | static int |
42 | work (const char *fname, int mask) |
43 | { |
44 | int result = 0; |
45 | size_t i; |
46 | for (i = 0; i < nfcts; ++i) |
47 | { |
48 | remove (fname); |
49 | int fd = fcts[i].fp (fname, 0777); |
50 | if (fd == -1) |
51 | { |
52 | printf (format: "cannot %s %s: %m\n" , fcts[i].name, fname); |
53 | exit (1); |
54 | } |
55 | if (fcts[i].is_fd) |
56 | close (fd: fd); |
57 | struct stat64 st; |
58 | if (stat64 (file: fname, buf: &st) == -1) |
59 | { |
60 | printf (format: "cannot stat %s after %s: %m\n" , fname, fcts[i].name); |
61 | exit (1); |
62 | } |
63 | |
64 | if ((st.st_mode & mask) != 0) |
65 | { |
66 | printf (format: "mask not successful after %s: %x still set\n" , |
67 | fcts[i].name, (unsigned int) (st.st_mode & mask)); |
68 | result = 1; |
69 | } |
70 | } |
71 | |
72 | return result; |
73 | } |
74 | |
75 | |
76 | static pthread_barrier_t bar; |
77 | |
78 | |
79 | static void * |
80 | tf (void *arg) |
81 | { |
82 | pthread_barrier_wait (barrier: &bar); |
83 | |
84 | int result = work (fname: arg, mask: 022); |
85 | |
86 | pthread_barrier_wait (barrier: &bar); |
87 | |
88 | pthread_barrier_wait (barrier: &bar); |
89 | |
90 | return (work (fname: arg, mask: 0) | result) ? (void *) -1l : NULL; |
91 | } |
92 | |
93 | |
94 | static int |
95 | do_test (const char *fname) |
96 | { |
97 | int result = 0; |
98 | |
99 | umask (mask: 0); |
100 | result |= work (fname, mask: 0); |
101 | |
102 | pthread_barrier_init (barrier: &bar, NULL, count: 2); |
103 | |
104 | pthread_t th; |
105 | if (pthread_create (newthread: &th, NULL, start_routine: tf, arg: (void *) fname) != 0) |
106 | { |
107 | puts (s: "cannot create thread" ); |
108 | exit (1); |
109 | } |
110 | |
111 | umask (mask: 022); |
112 | result |= work (fname, mask: 022); |
113 | |
114 | pthread_barrier_wait (barrier: &bar); |
115 | |
116 | pthread_barrier_wait (barrier: &bar); |
117 | |
118 | umask (mask: 0); |
119 | |
120 | pthread_barrier_wait (barrier: &bar); |
121 | |
122 | void *res; |
123 | if (pthread_join (th: th, thread_return: &res) != 0) |
124 | { |
125 | puts (s: "join failed" ); |
126 | exit (1); |
127 | } |
128 | |
129 | remove (fname); |
130 | |
131 | return result || res != NULL; |
132 | } |
133 | |
134 | #define TEST_FUNCTION do_test (argc < 2 ? "/tmp/tst-umask.tmp" : argv[1]) |
135 | #include "../test-skeleton.c" |
136 | |