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(_hurd_alloc_fd): When expanding the dtable, make sure the new size exceeds FIRST_FD.

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This commit is contained in:
Roland McGrath 1995-05-12 00:50:29 +00:00
parent 63deb0e4e7
commit 5f5ab9533b
1 changed files with 9 additions and 6 deletions
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15
hurd/alloc-fd.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1994 Free Software Foundation, Inc.
/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -89,17 +89,20 @@ _hurd_alloc_fd (int *fd, int first_fd)
/* Enlarge the table. */
int save = errno;
struct hurd_fd **new;
/* Try to double the table size (but don't exceed the limit).
If there isn't any at all, give it three slots (because
stdio will take that many anyway). */
int size = _hurd_dtablesize ? _hurd_dtablesize * 2 : 3;
/* Try to double the table size, but don't exceed the limit,
and make sure it exceeds FIRST_FD. */
int size = _hurd_dtablesize * 2;
if (size > rlimit)
size = rlimit;
else if (size <= first_fd)
size = first_fd + 1;
/* If we fail to allocate that, decrement the desired size
until we succeed in allocating it. */
do
new = realloc (_hurd_dtable, size * sizeof (*_hurd_dtable));
while (new == NULL && size-- > _hurd_dtablesize);
while (new == NULL && size-- > first_fd);
if (new != NULL)
{
/* We managed to allocate a new table. Now install it. */