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* Deprecate elf_getshnum(), elf_getphnum() and elf_getshstrndx() in

Browse Source 
favour of `elf_getshdrnum()`, `elf_getphdrnum()` and `elf_getshdrstrndx()`
  respectively.
* Add new manual pages for `elf_getshdrstrndx()`, `elf_getphdrnum()` and
  `elf_getshdrnum()`.
* Add a deprecation warning for `elf_getshstrndx()`, `elf_getphnum()` and
  `elf_getshnum()`.

Obtained from:	elftoolchain
MFC after:		1 month
This commit is contained in:
Kai Wang 2010-07-21 12:14:50 +00:00
parent 9eab8b61d9
commit 86f5401b91
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=210345
12 changed files with 336 additions and 26 deletions
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6
lib/libelf/Makefile
View File

@ -63,7 +63,8 @@ SHLIB_MAJOR= 1
MAN= elf.3 \
elf_begin.3 \
elf_cntl.3 \
elf_end.3 elf_errmsg.3 \
elf_end.3 \
elf_errmsg.3 \
elf_fill.3 \
elf_flagdata.3 \
elf_getarhdr.3 \
@ -72,8 +73,11 @@ MAN= elf.3 \
elf_getdata.3 \
elf_getident.3 \
elf_getscn.3 \
elf_getphdrnum.3 \
elf_getphnum.3 \
elf_getshdrnum.3 \
elf_getshnum.3 \
elf_getshdrstrndx.3 \
elf_getshstrndx.3 \
elf_hash.3 \
elf_kind.3 \

3
lib/libelf/Version.map
View File

@ -39,8 +39,11 @@ global:
elf_getdata;
elf_getident;
elf_getscn;
elf_getphdrnum;
elf_getphnum;
elf_getshdrnum;
elf_getshnum;
elf_getshdrstrndx;
elf_getshstrndx;
elf_hash;
elf_kind;

86
lib/libelf/elf_getphdrnum.3 Normal file
View File

@ -0,0 +1,86 @@
.\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed. in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $FreeBSD$
.\"
.Dd August 5, 2009
.Os
.Dt ELF_GETPHDRNUM 3
.Sh NAME
.Nm elf_getphdrnum
.Nd return the number of program headers in an ELF file
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft int
.Fn elf_getphdrnum "Elf *elf" "size_t *phnum"
.Sh DESCRIPTION
Function
.Fn elf_getphdrnum
retrieves the number of ELF program headers associated with descriptor
.Ar elf
and stores it into the location pointed to by argument
.Ar phnum .
.Pp
This routine allows applications to uniformly process both normal ELF
objects and ELF objects that use extended numbering.
.Pp
.Sh RETURN VALUES
Function
.Fn elf_getphdrnum
returns a zero value if successful, or -1 in case of an error.
.Sh ERRORS
Function
.Fn elf_getphnum
can fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
A NULL value was passed in for argument
.Ar elf .
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not for an ELF file.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
lacks an ELF Executable Header.
.It Bq Er ELF_E_HEADER
The ELF Executable Header associated with argument
.Ar elf
was corrupt.
.It Bq Er ELF_E_SECTION
The section header at index
.Dv SHN_UNDEF
was corrupt.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getshdrnum 3 ,
.Xr elf_getshdrstrndx 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

12
lib/libelf/elf_getphnum.3
View File

@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd December 16, 2006
.Dd August 5, 2009
.Dt ELF_GETPHNUM 3
.Os
.Sh NAME
@ -36,6 +36,11 @@
.Ft int
.Fn elf_getphnum "Elf *elf" "size_t *phnum"
.Sh DESCRIPTION
This function is deprecated.
Please use function
.Xr elf_getphdrnum 3
instead.
.Pp
Function
.Fn elf_getphnum
retrieves the number of ELF program headers associated with descriptor
@ -81,7 +86,8 @@ was corrupt.
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getshnum 3 ,
.Xr elf_getshstrndx 3 ,
.Xr elf_getphdrnum 3 ,
.Xr elf_getshdrnum 3 ,
.Xr elf_getshdrstrndx 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

78
lib/libelf/elf_getshdrnum.3 Normal file
View File

@ -0,0 +1,78 @@
.\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed. in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $FreeBSD$
.\"
.Dd August 4, 2009
.Os
.Dt ELF_GETSHDRNUM 3
.Sh NAME
.Nm elf_getshdrnum
.Nd return the number of sections in an ELF file
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft int
.Fn elf_getshdrnum "Elf *elf" "size_t *shnum"
.Sh DESCRIPTION
Function
.Fn elf_getshdrnum
retrieves the number of ELF sections associated with descriptor
.Ar elf
and stores it into the location pointed to by argument
.Ar shnum .
.Pp
This routine allows applications to uniformly process both normal ELF
objects, and ELF objects that use extended section numbering.
.Pp
.Sh RETURN VALUES
Function
.Fn elf_getshdrnum
returns zero value if successful, or -1 in case of an error.
.Sh ERRORS
Function
.Fn elf_getshdrnum
can fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
A NULL value was passed in for argument
.Ar elf .
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not for an ELF file.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
lacks an ELF Executable header.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getphdrnum 3 ,
.Xr elf_getshdrstrndx 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

79
lib/libelf/elf_getshdrstrndx.3 Normal file
View File

@ -0,0 +1,79 @@
.\" Copyright (c) 2006,2008 Joseph Koshy. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed. in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $FreeBSD$
.\"
.Dd August 5, 2009
.Os
.Dt ELF_GETSHDRSTRNDX 3
.Sh NAME
.Nm elf_getshdrstrndx
.Nd retrieve the index of the section name string table
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft int
.Fn elf_getshdrstrndx "Elf *elf" "size_t *ndxptr"
.Sh DESCRIPTION
Function
.Fn elf_getshdrstrndx
retrieves the section index of the string table containing section
names from descriptor
.Ar elf
and stores it into the location pointed to by argument
.Ar ndxptr .
.Pp
This function allow applications to process both normal ELF
objects and ELF objects that use extended section numbering uniformly.
.Pp
.Sh RETURN VALUES
These functions return zero if successful, or -1 in case of an error.
.Sh ERRORS
These functions can fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
A NULL value was passed in for argument
.Ar elf .
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not for an ELF file.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
lacks an ELF Executable header.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar ndx
contained a value in the reserved range of section indices.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getphdrnum 3 ,
.Xr elf_getshdrnum 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

10
lib/libelf/elf_getshnum.3
View File

@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 31, 2006
.Dd August 5, 2009
.Dt ELF_GETSHNUM 3
.Os
.Sh NAME
@ -36,6 +36,11 @@
.Ft int
.Fn elf_getshnum "Elf *elf" "size_t *shnum"
.Sh DESCRIPTION
This function is deprecated.
Please use
.Xr elf_getshdrnum 3
instead.
.Pp
Function
.Fn elf_getshnum
retrieves the number of ELF sections associated with descriptor
@ -73,6 +78,7 @@ lacks an ELF Executable header.
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getshstrndx 3 ,
.Xr elf_getphdrnum 3 ,
.Xr elf_getshdrstrndx 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

11
lib/libelf/elf_getshstrndx.3
View File

@ -23,7 +23,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 31, 2006
.Dd August 5, 2009
.Dt ELF_GETSHSTRNDX 3
.Os
.Sh NAME
@ -46,6 +46,12 @@ names from descriptor
.Ar elf
and stores it into the location pointed to by argument
.Ar ndxptr .
Function
.Fn elf_getshstrndx
is deprecated.
Please use
.Xr elf_getshdrstrndx 3
instead.
.Pp
Function
.Fn elf_setshstrndx
@ -82,6 +88,7 @@ contained a value in the reserved range of section indices.
.Xr elf32_getehdr 3 ,
.Xr elf64_getehdr 3 ,
.Xr elf_getident 3 ,
.Xr elf_getshnum 3 ,
.Xr elf_getphdrnum 3 ,
.Xr elf_getshdrnum 3 ,
.Xr gelf 3 ,
.Xr gelf_getehdr 3

23
lib/libelf/elf_phnum.c
View File

@ -32,8 +32,8 @@ __FBSDID("$FreeBSD$");
#include "_libelf.h"
int
elf_getphnum(Elf *e, size_t *phnum)
static int
_libelf_getphdrnum(Elf *e, size_t *phnum)
{
void *eh;
int ec;
@ -41,13 +41,26 @@ elf_getphnum(Elf *e, size_t *phnum)
if (e == NULL || e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
return (-1);
}
if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
return (0);
return (-1);
*phnum = e->e_u.e_elf.e_nphdr;
return (1);
return (0);
}
int
elf_getphdrnum(Elf *e, size_t *phnum)
{
return (_libelf_getphdrnum(e, phnum));
}
/* Deprecated API */
int
elf_getphnum(Elf *e, size_t *phnum)
{
return (_libelf_getphdrnum(e, phnum) >= 0);
}

23
lib/libelf/elf_shnum.c
View File

@ -32,8 +32,8 @@ __FBSDID("$FreeBSD$");
#include "_libelf.h"
int
elf_getshnum(Elf *e, size_t *shnum)
static int
_libelf_getshdrnum(Elf *e, size_t *shnum)
{
void *eh;
int ec;
@ -41,13 +41,26 @@ elf_getshnum(Elf *e, size_t *shnum)
if (e == NULL || e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
return (-1);
}
if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
return (0);
return (-1);
*shnum = e->e_u.e_elf.e_nscn;
return (1);
return (0);
}
int
elf_getshdrnum(Elf *e, size_t *shnum)
{
return (_libelf_getshdrnum(e, shnum));
}
/* Deprecated API. */
int
elf_getshnum(Elf *e, size_t *shnum)
{
return (_libelf_getshdrnum(e, shnum) >= 0);
}

22
lib/libelf/elf_shstrndx.c
View File

@ -32,8 +32,8 @@ __FBSDID("$FreeBSD$");
#include "_libelf.h"
int
elf_getshstrndx(Elf *e, size_t *strndx)
static int
_libelf_getshdrstrndx(Elf *e, size_t *strndx)
{
void *eh;
int ec;
@ -41,15 +41,27 @@ elf_getshstrndx(Elf *e, size_t *strndx)
if (e == NULL || e->e_kind != ELF_K_ELF ||
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
return (-1);
}
if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
return (0);
return (-1);
*strndx = e->e_u.e_elf.e_strndx;
return (1);
return (0);
}
int
elf_getshdrstrndx(Elf *e, size_t *strndx)
{
return (_libelf_getshdrstrndx(e, strndx));
}
int
elf_getshstrndx(Elf *e, size_t *strndx) /* Deprecated API. */
{
return (_libelf_getshdrstrndx(e, strndx) >= 0);
}
int

9
lib/libelf/libelf.h
View File

@ -193,10 +193,13 @@ Elf_Arsym *elf_getarsym(Elf *_elf, size_t *_ptr);
off_t elf_getbase(Elf *_elf);
Elf_Data *elf_getdata(Elf_Scn *, Elf_Data *);
char *elf_getident(Elf *_elf, size_t *_ptr);
int elf_getphnum(Elf *_elf, size_t *_dst);
int elf_getphdrnum(Elf *_elf, size_t *_dst);
int elf_getphnum(Elf *_elf, size_t *_dst); /* Deprecated */
Elf_Scn *elf_getscn(Elf *_elf, size_t _index);
int elf_getshnum(Elf *_elf, size_t *_dst);
int elf_getshstrndx(Elf *_elf, size_t *_dst);
int elf_getshdrnum(Elf *_elf, size_t *_dst);
int elf_getshnum(Elf *_elf, size_t *_dst); /* Deprecated */
int elf_getshdrstrndx(Elf *_elf, size_t *_dst);
int elf_getshstrndx(Elf *_elf, size_t *_dst); /* Deprecated */
unsigned long elf_hash(const char *_name);
Elf_Kind elf_kind(Elf *_elf);
Elf *elf_memory(char *_image, size_t _size);