NAME
elf_strptr — make a string pointer
SYNOPSIS
cc
[flag... ]
file...
-lelf
[library] ...
#include
<libelf.h>
char *elf_strptr(Elf *elf, size_t section, size_t offset);
DESCRIPTION
This function converts a string section
offset
to a string
pointer.
elf
identifies the file in which the string section
resides, and
section
gives the section table index for the
strings.
elf_strptr
normally returns a pointer to a string,
but it returns a null pointer when
elf
is null,
section
is invalid or is not a section of type
SHT_STRTAB,
the section data cannot be obtained,
offset
is invalid, or an error occurs.
EXAMPLES
A prototype for retrieving section names appears below. The
file header specifies the section name string table in the
e_shstrndx
member. The following code loops through the
sections, printing their names.
if ((ehdr = elf32_getehdr(elf)) == 0)
{
/* handle the error */
return;
}
ndx = ehdr->e_shstrndx;
scn = 0;
while ((scn = elf_nextscn(elf, scn)) != 0)
{
char *name = 0;
if ((shdr = elf32_getshdr(scn)) != 0)
name = elf_strptr(elf, ndx,
(size_t)shdr->sh_name);
printf("'%s'\n", name? name: "(null)");
}
Note
A program may call
elf_getdata
to retrieve an entire string table section. For some
applications, that would be both more
efficient and more convenient than using
elf_strptr.
Printable version
