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