1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
static char root_dir[64];
static void eatinodes_start(void)
{
int err;
root_dir[0] = '\0';
do
{
snprintf(root_dir, sizeof(root_dir), "eatinodes-%d", rand());
err = mkdir(root_dir, 0777);
if (err && errno != EEXIST)
{
printf("Failed to make test root directory: %s\n", strerror(errno));
exit(errno);
}
} while (err != 0);
printf("Created test root directory: ./%s\n", root_dir);
err = chdir(root_dir);
if (err < 0)
{
printf("Could not cd into test directory\n");
exit(1);
}
}
static void eatinodes(void)
{
int i;
int fd;
int err = 0;
char fname[32];
for (i = 0; !err; ++i)
{
snprintf(fname, sizeof(fname), "test-%d", i);
fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0666);
if (fd < 0)
{
printf("Could not open file %d: %s\n", i, strerror(errno));
break;
}
err = close(fd);
if (err < 0)
{
printf("Could not close fd %d: %s\n", fd, strerror(errno));
break;
}
printf("Created %d files\n", i);
}
int j;
printf("Cleaning up...\n");
for (j = 0; j < i; ++j)
{
snprintf(fname, sizeof(fname), "test-%d", j);
err = unlink(fname);
if (err < 0)
{
printf("Could not remove file %d: %s\n", j, strerror(errno));
}
}
}
static void eatinodes_end(void)
{
chdir("..");
int err = rmdir(root_dir);
if (err < 0)
{
printf("Could not remove test directory: %s\n", strerror(errno));
}
}
int main(int argc, char **argv)
{
eatinodes_start();
eatinodes();
eatinodes_end();
return 0;
}
|
