elf_cntl man page on Minix

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ELF_CNTL(3)		 BSD Library Functions Manual		   ELF_CNTL(3)

NAME
     elf_cntl — control an elf file descriptor

LIBRARY
     library “libelf”

SYNOPSIS
     #include <libelf.h>

     int
     elf_cntl(Elf *elf, Elf_Cmd cmd);

DESCRIPTION
     Function elf_cntl() controls the ELF library's subsequent use of the file
     descriptor used to create ELF descriptor elf.

     Argument cmd informs the library of the action to be taken:

     ELF_C_FDDONE  This value instructs the ELF library not to perform any
		   further I/O on the file descriptor associated with argument
		   elf.	 For ELF descriptors opened with mode ELF_C_WRITE or
		   ELF_C_RDWR subsequent elf_update() operations on the
		   descriptor will fail.

     ELF_C_FDREAD  This value instructs the ELF library to read in all neces‐
		   sary data associated with ELF descriptor elf into memory so
		   that the underlying file descriptor can be safely closed
		   with command ELF_C_FDDONE.

     Argument elf must be an ELF descriptor associated with a file system
     object (e.g., an ar(1) archive, an ELF file, or other data file).

IMPLEMENTATION NOTES
     Due to use of mmap(2) internally, this function is a no-op for ELF
     objects opened in ELF_C_READ mode.

RETURN VALUES
     Function elf_cntl() returns 0 on success, or -1 if an error was detected.

ERRORS
     [ELF_E_ARCHIVE]   Argument elf is a descriptor for an archive member.

     [ELF_E_ARGUMENT]  Argument elf was NULL.

     [ELF_E_ARGUMENT]  Argument cmd was not recognized.

     [ELF_E_MODE]      An ELF_C_FDREAD operation was requested on an ELF
		       descriptor opened for writing.

SEE ALSO
     elf(3), elf_begin(3), elf_end(3), elf_next(3), elf_update(3), gelf(3)

BSD				August 9, 2006				   BSD
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