GELF_UPDATE_VERSYM(3)

NAME
gelf_update_versym, gelf_update_verdef, gelf_update_verdaux, gelf_update_verneed, gelf_update_vernaux - modify class-independent symbol versioning records

SYNOPSIS
#include <gelf.h>

int gelf_update_versym (Elf_Data *data, int ndx, GElf_Versym  *src);
int gelf_update_verdef (Elf_Data *data, int offset, GElf_Verdef  *src);
int gelf_update_verdaux(Elf_Data *data, int offset, GElf_Verdaux *src);
int gelf_update_verneed(Elf_Data *data, int offset, GElf_Verneed *src);
int gelf_update_vernaux(Elf_Data *data, int offset, GElf_Vernaux *src);

DESCRIPTION
These functions provide class-independent modification of GNU ELF symbol versioning sections. Each function copies the contents of the caller-supplied src into the symbol versioning entry at the specified index or offset within data.

gelf_update_versym()
    Write a symbol version index into the SHT_GNU_versym section associated with data at index ndx.

gelf_update_verdef()
    Write a version definition entry into the SHT_GNU_verdef section associated with data at section offset offset.

gelf_update_verdaux()
    Write a version definition auxiliary entry into the SHT_GNU_verdef section associated with data at section offset offset.

gelf_update_verneed()
    Write a version needed entry into the SHT_GNU_verneed section associated with data at section offset offset.

gelf_update_vernaux()
    Write a version needed auxiliary entry into the SHT_GNU_verneed section associated with data at section offset offset.

PARAMETERS

data
    Elf_Data pointer corresponding to the appropriate GNU symbol versioning section.

ndx (For gelf_update_versym() only.) Zero-based index of the entry within data.

offset
    (For gelf_update_verdef(), gelf_update_verdaux(), gelf_update_verneed(), and gelf_update_vernaux().) Section-relative byte offset of the entry within data.

src Pointer to the caller-supplied symbol: GElf_Versym, GElf_Verdef, GElf_Verdaux, GElf_Verneed, or GElf_Vernaux as appropriate. This argument must not be NULL.

RETURN VALUE
On success, these functions store the requested entry in src, mark the section corresponding to data with ELF_F_DIRTY and return a non-zero value. On failure, 0 is returned and elf_errno is set. If data is NULL, 0 is returned without setting elf_errno.

SEE ALSO
gelf_getverdaux(3), gelf_getverdef(3), gelf_getvernaux(3), gelf_getverneed(3), gelf_getversym(3), libelf(3), elf(5)

ATTRIBUTES
Interface | Attribute | Value
 | Thread safety | MT-Safe

REPORTING BUGS
Report bugs to <elfutils-devel@sourceware.org> or https://sourceware.org/bugzilla/.