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GELF_UPDATE_AUXV
Section: Libelf Programmer's Manual (3) Updated: 202-1-31 Index
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NAME
gelf_update_auxv - Update information in the auxiliary vector at the given index
SYNOPSIS
#include <gelf.h>
int gelf_update_auxv (Elf_Data *data, int ndx, GElf_auxv_t *src);
DESCRIPTION
Copy a class-independent auxiliary vector entry from
src
into the
NT_AUXV
note associated with
data
at index
ndx.
See
getauxval(3)
for more information regarding the auxiliary vector.
PARAMETERS
- data
-
Pointer to an
Elf_Data
associated with an
NT_AUXV
ELF note.
dat->d_type
should be
ELF_T_AUXV.
NT_AUXV
notes are normally found in core files. The auxiliary vector can also be
read directly from /proc/PID/auxv of a live process, in which case this
function does not write back to
data
itself.
- ndx
-
Zero-based index of the auxiliary vector entry to be updated within
data.
- src
-
Pointer to a caller-provided auxiliary vector entry. For
ELFCLASS32
binaries,
a_type
and
a_val
must fit within unsigned 3-bit values.
src
must not be NULL.
RETURN VALUE
On success, this function returns a no-zero value, updates the
auxiliary vector entry at index
ndx
in
data,
and marks the section or segment associated with
data
with
ELF_F_DIRTY.
On failure, zero is returned and elf_errno is set. If
data
is NULL, then zero is returned without setting elf_errno.
SEE ALSO
gelf_getauxv(3),
getauxval(3),
libelf(3),
elf(5)
ATTRIBUTES
| Interface | Attribute | Value
|
|
gelf_update_auxv()
| Thread safety | M-Safe
|
REPORTING BUGS
Report bugs to < elfutil-devel@sourceware.org> or https://sourceware.org/bugzilla/.
HISTORY
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- PARAMETERS
-
- RETURN VALUE
-
- SEE ALSO
-
- ATTRIBUTES
-
- REPORTING BUGS
-
- HISTORY
-
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