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authorJoseph Myers <joseph@codesourcery.com>2015-06-12 17:34:11 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-06-12 17:34:11 +0000
commit9714012ca015f1f6763f66bd74d6f3f9e1512b36 (patch)
tree418f7f2316fdce01a1e14b2dd19f2df91c2ea0e4 /sysdeps/pthread
parent498c1f6a7c7f7b634d02e740f15789cf68820a54 (diff)
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Fix aio_* pread namespace (bug 18519).
aio_* bring in references to pread, which isn't in all the standards containing aio_* (as a reference from one library to another, this is a bug for dynamic as well as static linking). This patch fixes this by using __libc_pread instead, exporting that function from libc at symbol version GLIBC_PRIVATE; the code, with conditionals that may call either __pread64 or __libc_pread, becomes exactly analogous to that elsewhere in the same file that may call either __pwrite64 or __libc_pwrite. Tested for x86_64 and x86 (testsuite, and comparison of disassembly of installed shared libraries). libc changes because of the PLT entry for the newly exported __libc_pread; librt changes because of assertion line numbers and PLT rearrangement; other stripped installed shared libraries do not change. [BZ #18519] * posix/Versions (libc): Export __libc_pread at version GLIBC_PRIVATE. * sysdeps/pthread/aio_misc.c (handle_fildes_io): Call __libc_pread instead of pread. * conform/Makefile (test-xfail-POSIX/aio.h/linknamespace): Remove variable.
Diffstat (limited to 'sysdeps/pthread')
-rw-r--r--sysdeps/pthread/aio_misc.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/sysdeps/pthread/aio_misc.c b/sysdeps/pthread/aio_misc.c
index 83a6cb9..d9740d7 100644
--- a/sysdeps/pthread/aio_misc.c
+++ b/sysdeps/pthread/aio_misc.c
@@ -536,10 +536,11 @@ handle_fildes_io (void *arg)
aiocbp->aiocb64.aio_offset));
else
aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (pread (fildes,
- (void *) aiocbp->aiocb.aio_buf,
- aiocbp->aiocb.aio_nbytes,
- aiocbp->aiocb.aio_offset));
+ TEMP_FAILURE_RETRY (__libc_pread (fildes,
+ (void *)
+ aiocbp->aiocb.aio_buf,
+ aiocbp->aiocb.aio_nbytes,
+ aiocbp->aiocb.aio_offset));
if (aiocbp->aiocb.__return_value == -1 && errno == ESPIPE)
/* The Linux kernel is different from others. It returns