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Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
03fc0c626d
While running vircryptotest, it was found that valgrind pointed out the following error: ==27453== Invalid write of size 1 ==27453== at 0x4C7D7C9: virCryptoHashString (vircrypto.c:76) ==27453== by 0x401C4E: testCryptoHash (vircryptotest.c:41) ==27453== by 0x402A11: virtTestRun (testutils.c:199) ==27453== by 0x401AD5: mymain (vircryptotest.c:76) ==27453== by 0x40318D: virtTestMain (testutils.c:782) ==27453== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==27453== Address 0x51f0541 is 0 bytes after a block of size 65 alloc'd ==27453== at 0x4A0577B: calloc (vg_replace_malloc.c:593) ==27453== by 0x4C69F2E: virAllocN (viralloc.c:189) ==27453== by 0x4C7D76B: virCryptoHashString (vircrypto.c:69) ==27453== by 0x401C4E: testCryptoHash (vircryptotest.c:41) ==27453== by 0x402A11: virtTestRun (testutils.c:199) ==27453== by 0x401AD5: mymain (vircryptotest.c:76) ==27453== by 0x40318D: virtTestMain (testutils.c:782) ==27453== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==27453== ...and many more. Two observations: hashstrlen was already set to include the trailing NUL byte (so writing to hashstrlen as the array offset was indeed writing one byte beyond bounds), and VIR_ALLOC_N already guarantees zero-initialization (so we already have a trailing NUL without needing to explicitly write one). Signed-off-by: Eric Blake <eblake@redhat.com> |
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.gnulib@72fb9075b2 | ||
build-aux | ||
daemon | ||
docs | ||
examples | ||
gnulib | ||
include | ||
m4 | ||
po | ||
src | ||
tests | ||
tools | ||
.ctags | ||
.dir-locals.el | ||
.gitignore | ||
.gitmodules | ||
.mailmap | ||
AUTHORS.in | ||
autobuild.sh | ||
autogen.sh | ||
bootstrap | ||
bootstrap.conf | ||
cfg.mk | ||
ChangeLog-old | ||
config-post.h | ||
configure.ac | ||
COPYING | ||
COPYING.LESSER | ||
HACKING | ||
libvirt.pc.in | ||
libvirt.spec.in | ||
Makefile.am | ||
Makefile.nonreentrant | ||
mingw-libvirt.spec.in | ||
README | ||
README-hacking | ||
run.in | ||
TODO |
LibVirt : simple API for virtualization Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C API initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms if needed. Daniel Veillard <veillard@redhat.com>