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.TH ELF32_FSIZE 3 2024-08-14 "Libelf" "Libelf Programmer's Manual"
.SH NAME
elf32_fsize, elf64_fsize \- calculate the file size of an ELF data structure
.SH SYNOPSIS
.nf
.B #include <libelf.h>
.BI "size_t elf32_fsize(Elf_Type " type ", size_t " count ", unsigned int " version ");"
.BI "size_t elf64_fsize(Elf_Type " type ", size_t " count ", unsigned int " version ");"
.SH DESCRIPTION
Given an
.B Elf_Type
representation of a core ELF structure as well as the number of items, return
the number of bytes needed for the on-disk representation in a 32-bit or 64-bit
ELF file. The on-disk and in-memory representations of
.B Elf_Type
are assumed to be the same. See
.BR libelf (3)
for more information regarding
.BR Elf_Type .
.SH PARAMETERS
.TP
.I type
The ELF data structure type for which the file size is to be calculated.
.TP
.I count
The number of elements of the specified type.
.TP
.I version
The ELF version. This should be set to
.BR EV_CURRENT ,
which is the only valid value.
.SH RETURN VALUE
The size in bytes of the specified count and type of data structure.
If version is not set to
.B EV_CURRENT
or
.I type
is not a valid
.BR Elf_Type ,
return 0 and set a libelf error code. Integer overflow can occur if
the size of
.I type
multiplied by
.I count
is greater than
.BR SIZE_MAX .
.SH SEE ALSO
.BR elf_errno (3),
.BR libelf (3),
.BR elf (5)
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbx lb lb
l l l.
Interface Attribute Value
T{
.na
.nh
.BR elf32_fsize (),
.BR elf64_fsize ()
T} Thread safety MT-Safe
.TE
.SH REPORTING BUGS
Report bugs to <elfutils-devel@sourceware.org> or https://sourceware.org/bugzilla/.
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