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Release 4.16 lib/mpi/mpiutil.c

Directory: lib/mpi
/* mpiutil.ac  -  Utility functions for MPI
 * Copyright (C) 1998, 1999 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#include "mpi-internal.h"

/****************
 * Note:  It was a bad idea to use the number of limbs to allocate
 *        because on a alpha the limbs are large but we normally need
 *        integers of n bits - So we should chnage this to bits (or bytes).
 *
 *        But mpi_alloc is used in a lot of places :-)
 */

MPI mpi_alloc(unsigned nlimbs) { MPI a; a = kmalloc(sizeof *a, GFP_KERNEL); if (!a) return a; if (nlimbs) { a->d = mpi_alloc_limb_space(nlimbs); if (!a->d) { kfree(a); return NULL; } } else { a->d = NULL; } a->alloced = nlimbs; a->nlimbs = 0; a->sign = 0; a->flags = 0; a->nbits = 0; return a; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin104100.00%1100.00%
Total104100.00%1100.00%

EXPORT_SYMBOL_GPL(mpi_alloc);
mpi_ptr_t mpi_alloc_limb_space(unsigned nlimbs) { size_t len = nlimbs * sizeof(mpi_limb_t); if (!len) return NULL; return kmalloc(len, GFP_KERNEL); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin34100.00%2100.00%
Total34100.00%2100.00%


void mpi_free_limb_space(mpi_ptr_t a) { if (!a) return; kzfree(a); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin1894.74%150.00%
Tadeusz Struk15.26%150.00%
Total19100.00%2100.00%


void mpi_assign_limb_space(MPI a, mpi_ptr_t ap, unsigned nlimbs) { mpi_free_limb_space(a->d); a->d = ap; a->alloced = nlimbs; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin33100.00%1100.00%
Total33100.00%1100.00%

/**************** * Resize the array of A to NLIMBS. the additional space is cleared * (set to 0) [done by m_realloc()] */
int mpi_resize(MPI a, unsigned nlimbs) { void *p; if (nlimbs <= a->alloced) return 0; /* no need to do it */ if (a->d) { p = kmalloc(nlimbs * sizeof(mpi_limb_t), GFP_KERNEL); if (!p) return -ENOMEM; memcpy(p, a->d, a->alloced * sizeof(mpi_limb_t)); kzfree(a->d); a->d = p; } else { a->d = kzalloc(nlimbs * sizeof(mpi_limb_t), GFP_KERNEL); if (!a->d) return -ENOMEM; } a->alloced = nlimbs; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin12799.22%150.00%
Tadeusz Struk10.78%150.00%
Total128100.00%2100.00%


void mpi_free(MPI a) { if (!a) return; if (a->flags & 4) kzfree(a->d); else mpi_free_limb_space(a->d); if (a->flags & ~7) pr_info("invalid flag value in mpi\n"); kfree(a); }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin5598.21%150.00%
Tadeusz Struk11.79%150.00%
Total56100.00%2100.00%

EXPORT_SYMBOL_GPL(mpi_free); MODULE_DESCRIPTION("Multiprecision maths library"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Dmitry Kasatkin38796.75%250.00%
Konstantin Khlebnikov102.50%125.00%
Tadeusz Struk30.75%125.00%
Total400100.00%4100.00%
Directory: lib/mpi
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