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https://github.com/stefanberger/libtpms
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a0098eda2d
This is the initial import of the libtpms library. The libtpms library provides software emulation of a Trusted Platform Module (TPM). It is intended to be used by applications when a hardware TPM is not adequate. For example, a hypervisor can use libtpms to emulate an independent TPM for each of it's virtual machine guests. The library provides a high- level API for developers to integrate the emulated TPM support into their application. The code was originally written by Kenneth Goldman <kgoldman@us.ibm.com> and Stefan Berger <stefanb@us.ibm.com>. The code is licensed under the Modified BSD License. Signed-off-by: Corey Bryant <coreyb@linux.vnet.ibm.com>
191 lines
5.8 KiB
Groff
191 lines
5.8 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "TPM_MALLOC 1"
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.TH TPM_MALLOC 1 "2011-10-12" "libtpms-0.5.1" "libtpms documentation"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.nh
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.SH "NAME"
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TPM_Malloc \- Allocate memory
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.PP
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TPM_Realloc \- Reallocate memory
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.PP
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TPM_Free \- Free memory
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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\&\fB#include <libtpms/tpm_types.h\fR>
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.PP
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\&\fB#include <libtpms/tpm_memory.h\fR>
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.PP
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\&\fB#include <libtpms/tpm_error.h\fR>
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.PP
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\&\fB\s-1TPM_RESULT\s0 TPM_Malloc(unsigned char\fR **\fIbuffer\fR\fB,
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uint32_t\fR \fIsize\fR\fB);\fR
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.PP
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\&\fB\s-1TPM_RESULT\s0 TPM_Realloc(unsigned char\fR **\fIbuffer\fR\fB,
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uint32_t\fR \fIsize\fR\fB);\fR
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.PP
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\&\fBvoid TPM_Free(unsigned char\fR *\fIbuffer\fR\fB);\fR
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The \fB\f(BITPM_Malloc()\fB\fR function is used to allocate a buffer of the given size.
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The allocated buffer will be returned in the \fIbuffer\fR parameter.
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.PP
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The \fB\f(BITPM_Realloc()\fB\fR function is used to resize a buffer. The new size of
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the buffer is given in the \fIsize\fR parameter. The reallocated buffer will
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contain the data from the original buffer.
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.PP
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Both functions have the restriction that the buffer they can allocate
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is limited to \fB\s-1TPM_ALLOC_MAX\s0\fR (64k) bytes. This size is sufficent
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for all buffers needed by the \s-1TPM\s0.
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.PP
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Upon successful completion, the functions return \fB\s-1TPM_SUCCESS\s0\fR. In case the
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requested buffer exceeds the limit, \fB\s-1TPM_SIZE\s0\fR will be returned. See further
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possible error codes below.
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.PP
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The \fB\f(BITPM_Free()\fB\fR function frees the memory previously allocated using
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either \fB\f(BITPM_Malloc()\fB\fR or \fB\f(BITPM_Realloc()\fB\fR.
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.SH "ERRORS"
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.IX Header "ERRORS"
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.IP "\fB\s-1TPM_SUCCESS\s0\fR" 4
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.IX Item "TPM_SUCCESS"
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The function completed sucessfully.
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.IP "\fB\s-1TPM_SIZE\s0\fR" 4
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.IX Item "TPM_SIZE"
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The size of the requested buffer exceeds the limit or the
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system is out of memory.
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.IP "\fB\s-1TPM_FAIL\s0\fR" 4
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.IX Item "TPM_FAIL"
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Requested buffer is of size 0.
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.PP
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For a complete list of \s-1TPM\s0 error codes please consult the include file
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\&\fBlibtpms/tpm_error.h\fR
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fBTPMLIB_MainInit\fR(3), \fBTPMLIB_Terminate\fR(3)
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\&\fBTPMLIB_Process\fR(3), \fBTPMLIB_RegisterCallbacks\fR(3), \fBTPMLIB_GetVersion\fR(3)
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