diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-23 18:49:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-23 18:49:06 -0700 |
commit | e05644e17e744315bce12b0948cdc36910b9a76e (patch) | |
tree | 92d62ff59c57f991ef6b5c3cc2c2dcd205946a11 /lib/mpi/mpi-bit.c | |
parent | 97e7292ab5ccd30a13c3612835535fc3f3e59715 (diff) | |
parent | 663728418e3494f8e4a82f5d1b2f23c22d11be35 (diff) |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Nothing groundbreaking for this kernel, just cleanups and fixes, and a
couple of Smack enhancements."
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (21 commits)
Smack: Maintainer Record
Smack: don't show empty rules when /smack/load or /smack/load2 is read
Smack: user access check bounds
Smack: onlycap limits on CAP_MAC_ADMIN
Smack: fix smack_new_inode bogosities
ima: audit is compiled only when enabled
ima: ima_initialized is set only if successful
ima: add policy for pseudo fs
ima: remove unused cleanup functions
ima: free securityfs violations file
ima: use full pathnames in measurement list
security: Fix nommu build.
samples: seccomp: add .gitignore for untracked executables
tpm: check the chip reference before using it
TPM: fix memleak when register hardware fails
TPM: chip disabled state erronously being reported as error
MAINTAINERS: TPM maintainers' contacts update
Merge branches 'next-queue' and 'next' into next
Remove unused code from MPI library
Revert "crypto: GnuPG based MPI lib - additional sources (part 4)"
...
Diffstat (limited to 'lib/mpi/mpi-bit.c')
-rw-r--r-- | lib/mpi/mpi-bit.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/lib/mpi/mpi-bit.c b/lib/mpi/mpi-bit.c index 0c505361da1..568724804f2 100644 --- a/lib/mpi/mpi-bit.c +++ b/lib/mpi/mpi-bit.c @@ -54,165 +54,3 @@ unsigned mpi_get_nbits(MPI a) return n; } EXPORT_SYMBOL_GPL(mpi_get_nbits); - -/**************** - * Test whether bit N is set. - */ -int mpi_test_bit(MPI a, unsigned n) -{ - unsigned limbno, bitno; - mpi_limb_t limb; - - limbno = n / BITS_PER_MPI_LIMB; - bitno = n % BITS_PER_MPI_LIMB; - - if (limbno >= a->nlimbs) - return 0; /* too far left: this is a 0 */ - limb = a->d[limbno]; - return (limb & (A_LIMB_1 << bitno)) ? 1 : 0; -} - -/**************** - * Set bit N of A. - */ -int mpi_set_bit(MPI a, unsigned n) -{ - unsigned limbno, bitno; - - limbno = n / BITS_PER_MPI_LIMB; - bitno = n % BITS_PER_MPI_LIMB; - - if (limbno >= a->nlimbs) { /* resize */ - if (a->alloced >= limbno) - if (mpi_resize(a, limbno + 1) < 0) - return -ENOMEM; - a->nlimbs = limbno + 1; - } - a->d[limbno] |= (A_LIMB_1 << bitno); - return 0; -} - -/**************** - * Set bit N of A. and clear all bits above - */ -int mpi_set_highbit(MPI a, unsigned n) -{ - unsigned limbno, bitno; - - limbno = n / BITS_PER_MPI_LIMB; - bitno = n % BITS_PER_MPI_LIMB; - - if (limbno >= a->nlimbs) { /* resize */ - if (a->alloced >= limbno) - if (mpi_resize(a, limbno + 1) < 0) - return -ENOMEM; - a->nlimbs = limbno + 1; - } - a->d[limbno] |= (A_LIMB_1 << bitno); - for (bitno++; bitno < BITS_PER_MPI_LIMB; bitno++) - a->d[limbno] &= ~(A_LIMB_1 << bitno); - a->nlimbs = limbno + 1; - return 0; -} - -/**************** - * clear bit N of A and all bits above - */ -void mpi_clear_highbit(MPI a, unsigned n) -{ - unsigned limbno, bitno; - - limbno = n / BITS_PER_MPI_LIMB; - bitno = n % BITS_PER_MPI_LIMB; - - if (limbno >= a->nlimbs) - return; /* not allocated, so need to clear bits :-) */ - - for (; bitno < BITS_PER_MPI_LIMB; bitno++) - a->d[limbno] &= ~(A_LIMB_1 << bitno); - a->nlimbs = limbno + 1; -} - -/**************** - * Clear bit N of A. - */ -void mpi_clear_bit(MPI a, unsigned n) -{ - unsigned limbno, bitno; - - limbno = n / BITS_PER_MPI_LIMB; - bitno = n % BITS_PER_MPI_LIMB; - - if (limbno >= a->nlimbs) - return; /* don't need to clear this bit, it's to far to left */ - a->d[limbno] &= ~(A_LIMB_1 << bitno); -} - -/**************** - * Shift A by N bits to the right - * FIXME: should use alloc_limb if X and A are same. - */ -int mpi_rshift(MPI x, MPI a, unsigned n) -{ - mpi_ptr_t xp; - mpi_size_t xsize; - - xsize = a->nlimbs; - x->sign = a->sign; - if (RESIZE_IF_NEEDED(x, (size_t) xsize) < 0) - return -ENOMEM; - xp = x->d; - - if (xsize) { - mpihelp_rshift(xp, a->d, xsize, n); - MPN_NORMALIZE(xp, xsize); - } - x->nlimbs = xsize; - return 0; -} - -/**************** - * Shift A by COUNT limbs to the left - * This is used only within the MPI library - */ -int mpi_lshift_limbs(MPI a, unsigned int count) -{ - const int n = a->nlimbs; - mpi_ptr_t ap; - int i; - - if (!count || !n) - return 0; - - if (RESIZE_IF_NEEDED(a, n + count) < 0) - return -ENOMEM; - - ap = a->d; - for (i = n - 1; i >= 0; i--) - ap[i + count] = ap[i]; - for (i = 0; i < count; i++) - ap[i] = 0; - a->nlimbs += count; - return 0; -} - -/**************** - * Shift A by COUNT limbs to the right - * This is used only within the MPI library - */ -void mpi_rshift_limbs(MPI a, unsigned int count) -{ - mpi_ptr_t ap = a->d; - mpi_size_t n = a->nlimbs; - unsigned int i; - - if (count >= n) { - a->nlimbs = 0; - return; - } - - for (i = 0; i < n - count; i++) - ap[i] = ap[i + count]; - ap[i] = 0; - a->nlimbs -= count; -} |