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ftruncate_test.c (160199) ftruncate_test.c (160200)
1/*-
2 * Copyright (c) 2006 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
1/*-
2 * Copyright (c) 2006 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 9 unchanged lines hidden (view full) ---

18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/tools/regression/file/ftruncate/ftruncate.c 160199 2006-07-09 10:19:07Z rwatson $
26 * $FreeBSD: head/tools/regression/file/ftruncate/ftruncate.c 160200 2006-07-09 10:43:31Z rwatson $
27 */
28
29/*
27 */
28
29/*
30 * Very simple regression test. Open a temporary file, then proceed to
31 * ftruncate it to various values and check that fstat returns those values.
32 * First we run forwards through a set of sizes starting with zero, then back
33 * again.
30 * Very simple regression test.
34 *
35 * Future tests that might be of interest:
36 *
37 * - Make sure that files grown via ftruncate() return 0 bytes for data
38 * reads.
39 *
40 * - Make sure that we can't ftruncate on a read-only descriptor.
41 *
42 * - Make sure we get EISDIR on a directory.
43 */
44
31 *
32 * Future tests that might be of interest:
33 *
34 * - Make sure that files grown via ftruncate() return 0 bytes for data
35 * reads.
36 *
37 * - Make sure that we can't ftruncate on a read-only descriptor.
38 *
39 * - Make sure we get EISDIR on a directory.
40 */
41
42#include <sys/types.h>
43#include <sys/event.h>
44#include <sys/socket.h>
45#include <sys/stat.h>
46
47#include <err.h>
48#include <errno.h>
49#include <limits.h>
50#include <stdio.h>
51#include <unistd.h>
52

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58 1024, 1025, 2047, 2048, 2049, 4095, 4096, 4097, 8191, 8192, 8193, 16383,
59 16384, 16385};
60static int size_count = sizeof(sizes) / sizeof(off_t);
61
62int
63main(int argc, char *argv[])
64{
65 char path[PATH_MAX];
45#include <sys/stat.h>
46
47#include <err.h>
48#include <errno.h>
49#include <limits.h>
50#include <stdio.h>
51#include <unistd.h>
52

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58 1024, 1025, 2047, 2048, 2049, 4095, 4096, 4097, 8191, 8192, 8193, 16383,
59 16384, 16385};
60static int size_count = sizeof(sizes) / sizeof(off_t);
61
62int
63main(int argc, char *argv[])
64{
65 char path[PATH_MAX];
66 int fd, fds[2], i;
66 struct stat sb;
67 struct stat sb;
67 int fd, i;
68
68
69 /*
70 * Tests using a writable temporary file: grow and then shrink a file
71 * using ftruncate and various sizes. Make sure that a negative file
72 * size is rejected.
73 */
69 snprintf(path, PATH_MAX, "/tmp/ftruncate.XXXXXXXXXXXXX");
70 fd = mkstemp(path);
71 if (fd < 0)
72 err(-1, "makestemp");
73 (void)unlink(path);
74
75 if (ftruncate(fd, -1) == 0)
76 errx(-1, "ftruncate(fd, -1) succeeded");

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91 if (ftruncate(fd, sizes[i]) < 0)
92 err(-1, "ftruncate(%llu) down", sizes[i]);
93 if (fstat(fd, &sb) < 0)
94 err(-1, "stat");
95 if (sb.st_size != sizes[i])
96 errx(-1, "fstat(%llu) returned %llu down", sizes[i],
97 sb.st_size);
98 }
74 snprintf(path, PATH_MAX, "/tmp/ftruncate.XXXXXXXXXXXXX");
75 fd = mkstemp(path);
76 if (fd < 0)
77 err(-1, "makestemp");
78 (void)unlink(path);
79
80 if (ftruncate(fd, -1) == 0)
81 errx(-1, "ftruncate(fd, -1) succeeded");

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96 if (ftruncate(fd, sizes[i]) < 0)
97 err(-1, "ftruncate(%llu) down", sizes[i]);
98 if (fstat(fd, &sb) < 0)
99 err(-1, "stat");
100 if (sb.st_size != sizes[i])
101 errx(-1, "fstat(%llu) returned %llu down", sizes[i],
102 sb.st_size);
103 }
104 close(fd);
99
105
106 /*
107 * Make sure that ftruncate on sockets doesn't work.
108 */
109 fd = socket(PF_UNIX, SOCK_STREAM, 0);
110 if (fd < 0)
111 err(-1, "socket(PF_UNIX, SOCK_STREAM, 0)");
112 if (ftruncate(fd, 0) == 0)
113 errx(-1, "ftruncate(socket) succeeded");
114 if (errno != EINVAL)
115 err(-1, "ftruncate(socket) returned wrong error");
100 close(fd);
116 close(fd);
117
118 /*
119 * Make sure that ftruncate on pipes doesn't work.
120 */
121 if (pipe(fds) < 0)
122 err(-1, "pipe");
123 if (ftruncate(fds[0], 0) == 0)
124 errx(-1, "ftruncate(pipe) succeeded");
125 if (errno != EINVAL)
126 err(-1, "ftruncate(pipe) returned wrong error");
127 close(fds[0]);
128 close(fds[1]);
129
130 /*
131 * Make sure that ftruncate on kqueues doesn't work.
132 */
133 fd = kqueue();
134 if (fd < 0)
135 err(-1, "kqueue");
136 if (ftruncate(fds[0], 0) == 0)
137 errx(-1, "ftruncate(kqueue) succeeded");
138 if (errno != EINVAL)
139 err(-1, "ftruncate(kqueue) returned wrong error");
140 close(fd);
141
101 return (0);
102}
142 return (0);
143}