개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(1M)을 검색하려면 섹션에서 1M 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

elf_getscn(3elf)

elf_getscn(3ELF)             ELF Library Functions            elf_getscn(3ELF)



NAME
       elf_getscn,  elf_ndxscn, elf_newscn, elf_nextscn - get section informa‐
       tion

SYNOPSIS
       cc [ flag ... ] file ... -lelf [ library ... ]
       #include <libelf.h>

       Elf_Scn *elf_getscn(Elf *elf, size_t index);


       size_t elf_ndxscn(Elf_Scn *scn);


       Elf_Scn *elf_newscn(Elf *elf);


       Elf_Scn *elf_nextscn(Elf *elf, Elf_Scn *scn);

DESCRIPTION
       These functions provide indexed and sequential access to  the  sections
       associated  with  the  ELF descriptor elf. If the program is building a
       new file, it is responsible for creating the file's ELF  header  before
       creating sections; see elf32_getehdr(3ELF).


       The  elf_getscn() function returns a section descriptor, given an index
       into the file's section header table. Note that the first  "real"  sec‐
       tion has an index of 1. Although a program can get a section descriptor
       for the section whose index is 0 (SHN_UNDEF,  the  undefined  section),
       the  section  has  no  data  and  the section header is "empty" (though
       present). If the specified section does not exist, an error occurs,  or
       elf is NULL, elf_getscn() returns a null pointer.


       The  elf_newscn()  function creates a new section and appends it to the
       list for elf. Because the SHN_UNDEF section is required and not "inter‐
       esting" to applications, the library creates it automatically. Thus the
       first call to elf_newscn() for an ELF descriptor with no existing  sec‐
       tions  returns a descriptor for section 1. If an error occurs or elf is
       NULL, elf_newscn() returns a null pointer.


       After creating a new section descriptor, the program can use elf32_get‐
       shdr()  to  retrieve the newly created, "clean" section header. The new
       section  descriptor  will  have  no  associated  data   (see   elf_get‐
       data(3ELF)).  When  creating  a  new  section  in this way, the library
       updates the e_shnum member of the ELF header and sets  the  ELF_F_DIRTY
       bit  for the section (see elf_flagdata(3ELF)). If the program is build‐
       ing a new file, it is responsible for creating the  file's  ELF  header
       (see elf32_getehdr(3ELF)) before creating new sections.


       The  elf_nextscn()  function takes an existing section descriptor, scn,
       and returns a section descriptor for the next higher section.  One  may
       use  a  null  scn  to obtain a section descriptor for the section whose
       index is 1 (skipping the section whose index is SHN_UNDEF). If no  fur‐
       ther  sections  are present or an error occurs, elf_nextscn() returns a
       null pointer.


       The elf_ndxscn() function takes an existing  section  descriptor,  scn,
       and returns its section table index. If scn is null or an error occurs,
       elf_ndxscn() returns SHN_UNDEF.

EXAMPLES
       Example 1 A sample of calling elf_getscn() function.




       An example of sequential access appears below. Each  pass  through  the
       loop  processes  the next section in the file; the loop terminates when
       all sections have been processed.


         scn = 0;
         while ((scn = elf_nextscn(elf, scn)) != 0)
         {
              /* process section */
         }


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe


SEE ALSO
       elf(3ELF),  elf32_getehdr(3ELF),  elf32_getshdr(3ELF), elf_begin(3ELF),
       elf_flagdata(3ELF), elf_getdata(3ELF), libelf(3LIB), attributes(7)



Oracle Solaris 11.4               11 Jul 2001                 elf_getscn(3ELF)