mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-03-03 18:28:01 +01:00
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
153 lines
3.1 KiB
C
153 lines
3.1 KiB
C
/* mpiutil.ac - Utility functions for MPI
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* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <linux/export.h>
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#include "mpi-internal.h"
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/****************
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* Note: It was a bad idea to use the number of limbs to allocate
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* because on a alpha the limbs are large but we normally need
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* integers of n bits - So we should change this to bits (or bytes).
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*
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* But mpi_alloc is used in a lot of places :-)
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*/
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MPI mpi_alloc(unsigned nlimbs)
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{
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MPI a;
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a = kmalloc_obj(*a);
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if (!a)
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return a;
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if (nlimbs) {
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a->d = mpi_alloc_limb_space(nlimbs);
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if (!a->d) {
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kfree(a);
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return NULL;
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}
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} else {
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a->d = NULL;
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}
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a->alloced = nlimbs;
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a->nlimbs = 0;
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a->sign = 0;
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a->flags = 0;
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a->nbits = 0;
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return a;
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}
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EXPORT_SYMBOL_GPL(mpi_alloc);
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mpi_ptr_t mpi_alloc_limb_space(unsigned nlimbs)
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{
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size_t len = nlimbs * sizeof(mpi_limb_t);
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if (!len)
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return NULL;
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return kmalloc(len, GFP_KERNEL);
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}
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void mpi_free_limb_space(mpi_ptr_t a)
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{
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if (!a)
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return;
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kfree_sensitive(a);
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}
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void mpi_assign_limb_space(MPI a, mpi_ptr_t ap, unsigned nlimbs)
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{
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mpi_free_limb_space(a->d);
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a->d = ap;
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a->alloced = nlimbs;
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}
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/****************
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* Resize the array of A to NLIMBS. the additional space is cleared
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* (set to 0) [done by m_realloc()]
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*/
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int mpi_resize(MPI a, unsigned nlimbs)
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{
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void *p;
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if (nlimbs <= a->alloced)
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return 0; /* no need to do it */
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if (a->d) {
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p = kzalloc_objs(mpi_limb_t, nlimbs);
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if (!p)
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return -ENOMEM;
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memcpy(p, a->d, a->alloced * sizeof(mpi_limb_t));
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kfree_sensitive(a->d);
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a->d = p;
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} else {
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a->d = kzalloc_objs(mpi_limb_t, nlimbs);
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if (!a->d)
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return -ENOMEM;
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}
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a->alloced = nlimbs;
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return 0;
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}
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void mpi_free(MPI a)
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{
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if (!a)
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return;
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if (a->flags & 4)
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kfree_sensitive(a->d);
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else
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mpi_free_limb_space(a->d);
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if (a->flags & ~7)
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pr_info("invalid flag value in mpi\n");
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kfree(a);
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}
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EXPORT_SYMBOL_GPL(mpi_free);
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/****************
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* Note: This copy function should not interpret the MPI
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* but copy it transparently.
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*/
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MPI mpi_copy(MPI a)
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{
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int i;
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MPI b;
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if (a) {
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b = mpi_alloc(a->nlimbs);
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if (!b)
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return NULL;
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b->nlimbs = a->nlimbs;
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b->sign = a->sign;
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b->flags = a->flags;
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b->flags &= ~(16|32); /* Reset the immutable and constant flags. */
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for (i = 0; i < b->nlimbs; i++)
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b->d[i] = a->d[i];
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} else
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b = NULL;
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return b;
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}
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MODULE_DESCRIPTION("Multiprecision maths library");
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MODULE_LICENSE("GPL");
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