Commit graph

30 commits

Author SHA1 Message Date
Elliott Hughes
3b2096a9d6 Remove unnecessary 'extern's.
Change-Id: Iba2b3fb6ff88e504f1657b915120ae43d58a1e03
2016-07-22 18:57:12 -07:00
Elliott Hughes
203e13d97d Always include <sys/cdefs.h>.
I made a mistake caught by code review earlier, so let's try to be
safer by default.

This patch also moves all our "forwarding" headers to the guardless
just-include-the-other-thing style that we usually use. (Where we
have a comment explaining where the header comes from, I've kept
that.)

Change-Id: I37342cf5e2563c6a269b2ba61a697069b1c7913b
2016-07-22 17:01:54 -07:00
Elliott Hughes
3ba55f8022 Rationalize visibility.
If it's C or POSIX, it's in. If it's BSD or GNU, it's guarded by __USE_BSD
or __USE_GNU.

Bug: https://code.google.com/p/android/issues/detail?id=194631
Change-Id: Ife51a21c2b37b060db56780d29c929805b199cb6
2016-06-09 17:40:19 -07:00
Josh Gao
46b44160e9 Update header versions for NDK platform fixes.
Bug: http://b/28178111
Change-Id: Icd638673b409aa43a91490f77c6b4d79c9ea20d9
2016-06-02 13:40:35 -07:00
Dimitry Ivanov
41fd29532b Remove linker-namespace functions from the header
They are intended for platform use only and we shouldn't have them
in the public header file.

Bug: http://b/28174921
Change-Id: Ib9b3d0fa9442cfa2e784a693ad567d1444d774e5
2016-05-09 18:15:41 -07:00
Elliott Hughes
ed507636c0 Remove <sys/atomics.h>.
It's no longer used in the platform (including vendor code), and everyone
should be using <stdatomic.h> anyway.

Change-Id: Ic1ad743625ffb15b4837ff6ccb91dcd840d19ec2
2016-05-02 16:04:57 -07:00
Josh Gao
14adff1cfa Add versioning information to symbols.
Bug: http://b/28178111
Change-Id: I46bf95accd819f4521afb1173d8badcc5e9df31c
2016-04-29 16:39:50 -07:00
Josh Gao
b8e1b705d1 Make the legacy inline headers compile standalone.
It's useful to have the legacy inlines compile by themselves, both to
make header unification easier, and to ensure that the inline versions
match the regular declarations. Notably, this wasn't true for
sigismember, which took a const sigset_t* in the regular header, and
sigset_t* in the inline version.

Bug: http://b/28178111
Change-Id: Id8a3b7dcb1bfa61eed93c9fb50d3192744f8bef5
2016-04-15 13:06:08 -07:00
Josh Gao
99739d4280 Don't redefine __ANDROID_API__.
Bug: http://b/28178111
Change-Id: I00ded8f90694d9ed28f3b4c97778635f5a564592
2016-04-13 17:45:39 -07:00
Josh Gao
2675a9e343 Make <android/dlext.h> compile standalone.
Bug: http://b/28067717
Change-Id: If087e0c931c69bda34263ea8e0b2dc46d932b2af
2016-04-07 18:01:53 -07:00
Dimitry Ivanov
7331fe18d7 linker: implement shared namespaces
Shared namespaces clone the list of loaded native
libraries from the caller namespace. This allows
classloaders for bundled apps to share already loaded
libraries with default namespace.

Bug: http://b/22548808
Bug: http://b/26165097
Change-Id: I8949d45937fdb38e1f586ff0679003adac0d9dad
(cherry picked from commit e78deef364)
2015-12-19 23:38:27 -08:00
Dimitry Ivanov
284ae3559e Add permitted_when_isolated_path to linker namespaces
The permitted_when_isolated_path is a way to white-list
directories not present in search-path. It is ignored for
not isolated namespaces.

Bug: http://b/25853516
Bug: http://b/22548808
Change-Id: Ib1538037268eea69323ea49968a34a4a1d1938a5
2015-12-09 13:54:01 -08:00
Dmitriy Ivanov
1ffec1cc4d Introduce anonymous namespace
The anonymous namespace is introduced to
handle cases when linker can not find the
caller. This usually happens when caller
code was not loaded by dynamic linker;
for example mono-generated code.

Bug: http://b/25844435
Bug: http://b/22548808
Change-Id: I9e5b1d23c1c75bc78548d68e79216a6a943a33cf
2015-11-23 16:13:10 -08:00
Dmitriy Ivanov
42d5fcb9f4 Introducing linker namespaces
Bug: http://b/22548808
Change-Id: Ia3af3c0a167f1d16447a3d83bb045d143319b1e1
2015-11-15 12:09:16 -08:00
Dmitriy Ivanov
126af757c6 Implement load at fixed address feature
Bug: http://b/24683631
Change-Id: I3a39ab526c8f9e213339b60e135e5459d0f41381
2015-10-27 11:27:34 -07:00
Dmitriy Ivanov
8a11628355 Add flag that makes linker honor min(p_vaddr)
Bug: http://b/21523078
Change-Id: Ice72766fb6ad3bd333c32b496e7870121e17a763
2015-06-09 13:44:31 -07:00
Dmitriy Ivanov
9b82136b98 Add ANDROID_DLEXT_FORCE_LOAD flag
This flag allows to force loading of the library
  in the case when for some reason multiple ELF files
  share the same filename (because the already-loaded
  library has been removed and overwritten, for example).

Change-Id: I798d44409ee13d63eaa75d685e99c4d028d2b0c1
2015-04-03 10:50:48 -07:00
Dan Albert
466dbe4444 Put back inline definitions if using an old API.
All these inlines were turned in to out of line definitions in L.
This brings us a step closer to being able to just use the current
bionic headers for the NDK, rather than having many old versions of
them.

Change-Id: Ie010bc727d78d3742abc577c70f6578db2e68625
2015-01-29 17:30:40 -08:00
David 'Digit' Turner
aad1a39dfb libc: Fix headers to allow direct inclusion.
These headers are missing a few #includes to allow their direct
inclusion from C

http://b.android.com/79841

Change-Id: Ifc712c17f4da70b26adb67d4d49ed659f53c3621
2014-12-01 15:44:24 +01:00
Dmitriy Ivanov
a6c1279098 Rename library_offset to library_fd_offset
replace lseek() and use pread() instead
 add test for library_fd_offset > file_size case

Bug: 17762003
Change-Id: I4555f0be635124efe849c1f226985bcba72ffcbd
2014-10-21 13:51:08 -07:00
Dmitriy Ivanov
07e5bc152d Add file_offset parameter to android_extinfo
Bug: 17762003
Change-Id: I8fb267a3155acef3dba534038cf5d1ef00d7154b
2014-10-06 10:02:34 -07:00
Dan Albert
3a25ab952b Missing #include <sys/cdefs.h>.
Needed for __BEGIN_DECLS/__END_DECLS. Currently fine because it's being
included after other files that do this.

Change-Id: I1f12368fc461f6ef5ca90992cf19f317f0b5d7af
2014-08-19 11:08:02 -07:00
Dan Albert
ce6b1abbb1 Expose android_set_abort_message().
Removes the leading underscores from __android_set_abort_message() and
moves its declaration into a public header file.

Bug: 17059126
Change-Id: I470c79db47ec783ea7a54b800f8b78ecbe7479ab
2014-08-18 14:37:42 -07:00
Dmitriy Ivanov
3a8646fc5d Change android_dlextinfo flags to uint64_t
Change-Id: Id27e8f8e58dbcf6ae79644f2ad3af3dd0aef9ae7
2014-07-08 11:24:03 -07:00
Dmitriy Ivanov
04dc91ae76 Load library using file handle.
* This patch enables dlopen by file descriptor
   instead of path/name.

Bug: 15984217
Change-Id: Ib39051e00567fb97070bf96d8ce63993877c0a01
2014-07-02 13:20:47 -07:00
Elliott Hughes
4aa2e6a32a Give bionic's __ANDROID_API__ a more reasonable value.
This matches what frameworks/base does with Build.VERSION and means that
bionic's version number will always sort >= than any released version.
This should prevent confusion in code that builds both against bionic
and the NDK.

(Note that <sys/cdefs.h> drags this in, so it's always in the namespace.)

Bug: 14613709
Change-Id: I91fb745920e848a6b20f2f5797c0a7d6cde6c032
2014-05-07 12:57:51 -07:00
Torne (Richard Coles)
183ad9df53 Allow sharing the RELRO section via a file.
Add flags and a file descriptor to android_dlopen_ext() to allow writing
the RELRO section of the loaded library to a file after relocation
processing, and to allow mapping identical pages from the file over the
top of relocated memory in another process. Explicitly comparing the
pages is required in case a page contains a reference to a symbol
defined in another library loaded at a random base address.

Bug: 13005501
Change-Id: Ibb5b2d384edfaa5acf3e97a5f8b6115c10497a1e
2014-04-17 14:30:46 +01:00
Torne (Richard Coles)
12bbb91645 Support loading libraries to a reserved address.
Add flags and parameters to android_dlopen_ext() to allow loading a
library at an already-reserved fixed address. If the library to be
loaded will not fit within the space reserved, then the linker will
either fail, or allocate its own address space as usual, according to
which flag has been specified. This behaviour only applies to the
specific library requested; any other libraries loaded as dependencies
will be loaded in the normal fashion.

There is a new gtest included to cover the functionality added.

Bug: 13005501
Change-Id: I5d1810375b20fc51ba6a9b3191a25f9792c687f1
2014-04-17 14:22:17 +01:00
Torne (Richard Coles)
012cb4583a Add android_dlopen_ext() interface to linker.
Add a function "android_dlopen_ext()", defined in <android/dlext.h>.
This is an extended version of dlopen() which takes a struct for passing
additional parameters for Android-specific functionality. This will be
used to support RELRO section sharing between separate processes.

Bug: 13005501
Change-Id: I9c99b2f2a02ee329dedaeba09ef3a1113b17b2d6
2014-04-17 13:50:55 +01:00
David 'Digit' Turner
23d24394e7 libc: Add <android/api-level.h>
Add a new header that defines __ANDROID_API__ as a constant integer
corresponding to the current native API level. This header is included
by <sys/cdefs.h>

Change-Id: Ib4774e247b395991266245815a24292afc919848
NOTE: This header is already provided by the NDK's platform headers.
      for levels 3 to 9.
2010-12-06 12:05:11 +01:00