glibc/pldd-wait-ptrace-stop.patch
Andreas Schwab 746e16d2b9 Accepting request 186119 from home:Andreas_Schwab:glibc
- Update to glibc 2.17.90 85891acadf1b:
  * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
    has been fixed by disabling the use of pt_chown (Bugzilla #15755).
    Distributions can re-enable building and using pt_chown via the new configure
    option `--enable-pt_chown'.  Enabling the use of pt_chown carries with it
    considerable security risks and should only be used if the distribution
    understands and accepts the risks.
  * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
    #15078).
  * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
    fixed (Bugzilla #15330).
  * Add support for calling C++11 thread_local object destructors on thread
    and program exit.  This needs compiler support for offloading C++11
    destructor calls to glibc.
  * Improved worst case performance of libm functions with double inputs and
    output.
  * Support for priority inherited mutexes in pthread condition variables on
    non-x86 architectures.
  * Optimized string functions for AArch64.  Implemented by Marcus Shawcroft.
  * Optimized string functions for ARM.  Implemented by Will Newton and
    Richard Henderson.
  * Added a benchmark framework to track performance of functions in glibc.
  * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
    It is based on draft TS 18661 and currently enabled as a GNU extension.
  * On Linux, the clock function now uses the clock_gettime system call
    for improved precision, rather than old times system call.
  * Added new API functions pthread_getattr_default_np and
    pthread_setattr_default_np to get and set the default pthread
    attributes of a process.
  * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.

OBS-URL: https://build.opensuse.org/request/show/186119
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=304
2013-08-06 14:52:55 +00:00

60 lines
1.6 KiB
Diff

2013-07-31 Andreas Schwab <schwab@suse.de>
* elf/pldd.c (wait_for_ptrace_stop): New function.
(main): Call it after attaching.
Index: glibc-2.17.90/elf/pldd.c
===================================================================
--- glibc-2.17.90.orig/elf/pldd.c
+++ glibc-2.17.90/elf/pldd.c
@@ -34,6 +34,7 @@
#include <unistd.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
+#include <sys/wait.h>
#include <ldsodefs.h>
#include <version.h>
@@ -82,6 +83,7 @@ static char *exe;
/* Local functions. */
static int get_process_info (int dfd, long int pid);
+static void wait_for_ptrace_stop (long int pid);
int
@@ -170,6 +172,8 @@ main (int argc, char *argv[])
tid);
}
+ wait_for_ptrace_stop (tid);
+
struct thread_list *newp = alloca (sizeof (*newp));
newp->tid = tid;
newp->next = thread_list;
@@ -194,6 +198,24 @@ main (int argc, char *argv[])
}
+/* Wait for PID to enter ptrace-stop state after being attached. */
+static void
+wait_for_ptrace_stop (long int pid)
+{
+ int status;
+
+ /* While waiting for SIGSTOP being delivered to the tracee we have to
+ reinject any other pending signal. Ignore all other errors. */
+ while (waitpid (pid, &status, __WALL) == pid && WIFSTOPPED (status))
+ {
+ /* The STOP signal should not be delivered to the tracee. */
+ if (WSTOPSIG (status) == SIGSTOP)
+ return;
+ ptrace (PTRACE_CONT, pid, NULL, (void *) (uintptr_t) WSTOPSIG (status));
+ }
+}
+
+
/* Handle program arguments. */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)