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author | Joseph Koshy <jkoshy@FreeBSD.org> | 2006-11-11 17:16:35 +0000 |
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committer | Joseph Koshy <jkoshy@FreeBSD.org> | 2006-11-11 17:16:35 +0000 |
commit | 3eb1a62e694a65c67f6f86ca86a47dc06c93f1ee (patch) | |
tree | c2ad604787a38d6ad26a0bffea71f283f73e901d /lib/libelf/elf_next.c | |
parent | 5416cda82973bcbaa1882b11a260722885db33e5 (diff) | |
download | src-3eb1a62e694a65c67f6f86ca86a47dc06c93f1ee.tar.gz src-3eb1a62e694a65c67f6f86ca86a47dc06c93f1ee.zip |
MFP4: Add an implementation of the ELF(3) and GELF(3) API set.
Bump __FreeBSD_version.
Reviewed by: jb
Notes
Notes:
svn path=/head/; revision=164190
Diffstat (limited to 'lib/libelf/elf_next.c')
-rw-r--r-- | lib/libelf/elf_next.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/lib/libelf/elf_next.c b/lib/libelf/elf_next.c new file mode 100644 index 000000000000..1e1627c83ed6 --- /dev/null +++ b/lib/libelf/elf_next.c @@ -0,0 +1,61 @@ +/*- + * Copyright (c) 2006 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 THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <ar.h> +#include <assert.h> +#include <libelf.h> + +#include "_libelf.h" + +Elf_Cmd +elf_next(Elf *e) +{ + off_t next; + Elf *parent; + + if (e == NULL) + return (ELF_C_NULL); + + if ((parent = e->e_parent) == NULL) { + LIBELF_SET_ERROR(ARGUMENT, 0); + return (ELF_C_NULL); + } + + assert (parent->e_kind == ELF_K_AR); + assert (parent->e_cmd == ELF_C_READ); + assert((uintptr_t) e->e_rawfile % 2 == 0); + assert(e->e_rawfile > parent->e_rawfile); + + next = e->e_rawfile - parent->e_rawfile + e->e_rawsize; + next = (next + 1) & ~1; /* round up to an even boundary */ + + parent->e_u.e_ar.e_next = (next >= (off_t) parent->e_rawsize) ? (off_t) 0 : next; + + return (ELF_C_READ); +} |