How do I find out what all symbols are exported from a shared object

Question

I have a shared object  dll   How do I find out what all symbols are exported from that

User · Answer

Use  nm --demangle  lt libname gt  so

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objdump is another good one on linux

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The cross-platform way  not only cross-platform itself  but also working  at the very least  with both   so and   dll  is using reverse-engineering framework radare2  E g      rabin2 -s glew32 dll   head -n 5   Symbols  vaddr 0x62afda8d paddr 0x0005ba8d ord 000 fwd NONE sz 0 bind GLOBAL type FUNC name glew32 dll   GLEW 3DFX multisample vaddr 0x62afda8e paddr 0x0005ba8e ord 001 fwd NONE sz 0 bind GLOBAL type FUNC name glew32 dll   GLEW 3DFX tbuffer vaddr 0x62afda8f paddr 0x0005ba8f ord 002 fwd NONE sz 0 bind GLOBAL type FUNC name glew32 dll   GLEW 3DFX texture compression FXT1 vaddr 0x62afdab8 paddr 0x0005bab8 ord 003 fwd NONE sz 0 bind GLOBAL type FUNC name glew32 dll   GLEW AMD blend minmax factor   As a bonus  rabin2 recognizes C   name mangling  for example  and also with  so file      rabin2 -s  usr lib libabw-0 1 so 1 0 1   head -n 5  Symbols  vaddr 0x00027590 paddr 0x00027590 ord 124 fwd NONE sz 430 bind GLOBAL type FUNC name libabw  AbiDocument  isFileFormatSupported vaddr 0x0000a730 paddr 0x0000a730 ord 125 fwd NONE sz 58 bind UNKNOWN type FUNC name boost  exception   exception vaddr 0x00232680 paddr 0x00032680 ord 126 fwd NONE sz 16 bind UNKNOWN type OBJECT name typeinfoforboost  exception detail  clone base vaddr 0x00027740 paddr 0x00027740 ord 127 fwd NONE sz 235 bind GLOBAL type FUNC name libabw  AbiDocument  parse   Works with object files too     g   test cpp -c -o a o   rabin2 -s a o   head -n 5 Warning  Cannot initialize program headers Warning  Cannot initialize dynamic strings Warning  Cannot initialize dynamic section  Symbols  vaddr 0x08000149 paddr 0x00000149 ord 006 fwd NONE sz 1 bind LOCAL type OBJECT name std  piecewise construct vaddr 0x08000149 paddr 0x00000149 ord 007 fwd NONE sz 1 bind LOCAL type OBJECT name std    ioinit vaddr 0x080000eb paddr 0x000000eb ord 017 fwd NONE sz 73 bind LOCAL type FUNC name   static initialization and destruction 0 vaddr 0x08000134 paddr 0x00000134 ord 018 fwd NONE sz 21 bind LOCAL type FUNC name  GLOBAL  sub I  Z4funcP6Animal

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Usually  you would also have a header file that you include in your code to access the symbols

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Do you have a  shared object   usually a shared library on AIX   a UNIX shared library  or a Windows DLL  These are all different things  and your question conflates them all  -    For an AIX shared object  use dump -Tv  path to foo o  For an ELF shared library  use readelf -Ws  path to libfoo so  or  if you have GNU nm  nm -D  path to libfoo so  For a non-ELF UNIX shared library  please state which UNIX you are interested in  For a Windows DLL  use dumpbin  EXPORTS foo dll

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On  nix check nm  On windows use the program Dependency Walker

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You can use gnu objdump  objdump -p your dll  Then pan to the  edata section contents and you ll find the exported functions under  Ordinal Name Pointer  Table

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see man nm    GNU  nm lists  the symbols from object files objfile      If no object        files are listed as arguments  nm assumes the file a out

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If it is a Windows DLL file and your OS is Linux then use winedump     winedump -j export pcre dll  Contents of pcre dll  229888 bytes  Exports table     Name             pcre dll   Characteristics  00000000   TimeDateStamp    53BBA519 Tue Jul  8 10 00 25 2014   Version          0 00   Ordinal base     1     of functions   31     of Names       31 Addresses of functions  000375C8 Addresses of name ordinals  000376C0 Addresses of names  00037644    Entry Pt  Ordn  Name   0001FDA0     1 pcre assign jit stack   000380B8     2 pcre callout   00009030     3 pcre compile

[linux] How do I find out what all symbols are exported from a shared object?

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