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
|
/* Check for corner case: readlink of too-long name.
#progos: linux
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdarg.h>
void bye (const char *s, int i)
{
fprintf (stderr, "%s: %d\n", s, i);
fflush (NULL);
abort ();
}
int main (int argc, char *argv[])
{
char *buf;
char buf2[1024];
int max, i;
/* We assume this limit is what we see in the simulator as well. */
#ifdef PATH_MAX
max = PATH_MAX;
#else
max = pathconf (argv[0], _PC_PATH_MAX);
#endif
max *= 10;
if (max <= 0)
bye ("path_max", max);
if ((buf = malloc (max + 1)) == NULL)
bye ("malloc", 0);
strcat (buf, argv[0]);
if (strrchr (buf, '/') == NULL)
strcat (buf, "./");
for (i = strrchr (buf, '/') - buf + 1; i < max; i++)
buf[i] = 'a';
buf [i] = 0;
i = readlink (buf, buf2, sizeof (buf2) - 1);
if (i != -1)
bye ("i", i);
if (errno != ENAMETOOLONG)
{
perror (buf);
bye ("errno", errno);
}
printf ("pass\n");
exit (0);
}
|
