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authorMark Wielaard <mark@klomp.org>2018-10-21 23:41:32 +0200
committerMark Wielaard <mark@klomp.org>2018-11-09 18:11:48 +0100
commitecbe3120cddb1b9597a19a68c4265e4f2c530444 (patch)
tree40f6549cda3aa5bff3df983f15ac88d0da597b72 /libdw
parent4b0342b85b5b1a3d3636e06e3b5320954828dfb1 (diff)
downloadelfutils-ecbe3120cddb1b9597a19a68c4265e4f2c530444.tar.gz
libdwelf: New function dwelf_elf_begin.
This introduces a new function dwelf_elf_begin which creates a (read-only) ELF handle from a possibly compressed file handle or a file that start with a linux kernel header. This can be used in eu-readelf to (re)open a (pure) ELF. eu-readelf uses libdwfl to relocate addresses in the original file in case it is ET_REL. But to show the "raw" data it might need to (re)open the file. Which could fail if the file was compressed. And produced an obscure error message: "cannot create EBL handle". This rewrites __libdw_open_file a little so that the given file handle will never be closed (whether on success or failure) and introduces a new internal function __libdw_open_elf that dwelf_elf_begin wraps. Signed-off-by: Mark Wielaard <mark@klomp.org>
Diffstat (limited to 'libdw')
-rw-r--r--libdw/ChangeLog4
-rw-r--r--libdw/libdw.map5
2 files changed, 9 insertions, 0 deletions
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 627fddeb..7caa2234 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,7 @@
+2018-10-20 Mark Wielaard <mark@klomp.org>
+
+ * libdw.map (ELFUTILS_0.175): New section. Add dwelf_elf_begin.
+
2018-10-29 Milian Wolff <milian.wolff@kdab.com>
* dwarf_getcfi_elf.c (getcfi_shdr): Check sh_type != SHT_NOBITS.
diff --git a/libdw/libdw.map b/libdw/libdw.map
index 3fef2ede..55482d58 100644
--- a/libdw/libdw.map
+++ b/libdw/libdw.map
@@ -356,3 +356,8 @@ ELFUTILS_0.173 {
global:
dwarf_next_lines;
} ELFUTILS_0.171;
+
+ELFUTILS_0.175 {
+ global:
+ dwelf_elf_begin;
+} ELFUTILS_0.173; \ No newline at end of file