gelf_update_ehdr,
gelf_update_phdr,
gelf_update_shdr —
update underlying ELF data structures
ELF Access Library (libelf, -lelf)
#include
<gelf.h>
int
gelf_update_ehdr(
Elf
*elf,
GElf_Ehdr
*ehdr);
int
gelf_update_phdr(
Elf
*elf,
int
ndx,
GElf_Phdr
*phdr);
int
gelf_update_shdr(
Elf_Scn
*scn,
GElf_Shdr
*shdr);
These functions are used to update ELF data structures on the underlying ELF
descriptor. Class-dependent data structures in the underlying ELF descriptor
are updated using the data in the class-independent GElf descriptors and the
underlying ELF data structures are marked “dirty”. The
conversion process signals an error if the values being copied to the target
ELF data structure would exceed representation limits. GElf descriptors are
described in
gelf(3).
Function
gelf_update_ehdr() updates the ELF
Executable Header with the values in the class-independent executable header
ehdr.
Function
gelf_update_phdr() updates the ELF Program
Header structure at index
ndx with the values
in the class-independent program header
phdr.
Function
gelf_update_shdr() updates the ELF Section
Header structure associated with section descriptor
scn with the values in argument
shdr.
These functions return a non-zero integer on success, or zero in case of an
error.
These functions may fail with the following errors:
-
-
- [
ELF_E_ARGUMENT
]
- Arguments elf,
ehdr,
phdr,
scn, or
shdr were NULL.
-
-
- [
ELF_E_ARGUMENT
]
- Argument elf was not a
descriptor for an ELF object.
-
-
- [
ELF_E_ARGUMENT
]
- Argument elf had an
unsupported ELF class.
-
-
- [
ELF_E_ARGUMENT
]
- Argument ndx exceeded the
number of entries in the program header table.
-
-
- [
ELF_E_ARGUMENT
]
- Section descriptor scn was
not associated with an ELF descriptor.
-
-
- [
ELF_E_MODE
]
- ELF descriptor elf was not
opened for writing or updating.
-
-
- [
ELF_E_RESOURCE
]
- An out of memory condition was detected.
elf(3),
elf_flagelf(3),
elf_flagphdr(3),
elf_flagshdr(3),
gelf(3),
gelf_getehdr(3),
gelf_getphdr(3),
gelf_getshdr(3)