aboutsummaryrefslogtreecommitdiff
path: root/arch/ia64/kernel/ptrace.c
AgeCommit message (Collapse)Author
2006-05-01[PATCH] drop task argument of audit_syscall_{entry,exit}Al Viro
... it's always current, and that's a good thing - allows simpler locking. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] Fix IA64 success/failure indication in syscall auditing.David Woodhouse
Original 2.6.9 patch and explanation from somewhere within HP via bugzilla... ia64 stores a success/failure code in r10, and the return value (normal return, or *positive* errno) in r8. The patch also sets the exit code to negative errno if it's a failure result for consistency with other architectures. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-01-12[PATCH] ia64: task_pt_regs()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] use ptrace_get_task_struct in various placesChristoph Hellwig
The ptrace_get_task_struct() helper that I added as part of the ptrace consolidation is useful in variety of places that currently opencode it. Switch them to the common helpers. Add a ptrace_traceme() helper that needs to be explicitly called, and simplify the ptrace_get_task_struct() interface. We don't need the request argument now, and we return the task_struct directly, using ERR_PTR() for error returns. It's a bit more code in the callers, but we have two sane routines that do one thing well now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[IA64] fix warning unused variable `g'Tony Luck
4ac0068f44f192f2de95a7bb36df3e19767a45fb forgot to delete the declaration of this variable which is no longer used. Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-10-27[IA64] ptrace - find memory sharers on children listCliff Wickman
In arch/ia64/kernel/ptrace.c there is a test for a peek or poke of a register image (in register backing storage). The test can be unnecessarily long (and occurs while holding the tasklist_lock). Especially long on a large system with thousands of active tasks. The ptrace caller (presumably a debugger) specifies the pid of its target and an address to peek or poke. But the debugger could be attached to several tasks. The idea of find_thread_for_addr() is to find whether the target address is in the RBS for any of those tasks. Currently it searches the thread-list of the target pid. If that search does not find a match, and the shared mm-struct's user count indicates that there are other tasks sharing this address space (a rare occurrence), a search is made of all the tasks in the system. Another approach can drastically shorten this procedure. It depends upon the fact that in order to peek or poke from/to any task, the debugger must first attach to that task. And when it does, the attached task is made a child of the debugger (is chained to its children list). Therefore we can search just the debugger's children list. Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-28Auto merge with /home/aegl/GIT/ia64-testTony Luck
2005-06-21[IA64] ptrace and restore_sigcontext() allow ar.rsc.pl==0Matthew Chapman
This patch fixes handling of accesses to ar.rsc via ptrace & restore_sigcontext [With Thanks to Chris Wright for noticing the restore_sigcontext path] Signed-off-by: Matthew Chapman <matthewc@hp.com> Acked-by: David Mosberger <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-15Auto merge with /home/aegl/GIT/linusTony Luck
2005-06-08[PATCH] ia64: fix floating-point preemption problemPeter Chubb
There've been reports of problems with CONFIG_PREEMPT=y and the high floating point partition. This is caused by the possibility of preemption and rescheduling on a different processor while saving or restioirng the high partition. The only places where the FPU state is touched are in ptrace, in switch_to(), and where handling a floating-point exception. In switch_to() preemption is off. So it's only in trap.c and ptrace.c that we need to prevent preemption. Here is a patch that adds commentary to make the conditions clear, and adds appropriate preempt_{en,dis}able() calls to make it so. In trap.c I use preempt_enable_no_resched(), as we're about to return to user space where the preemption flag will be checked anyway. Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17[IA64] Fix convert_to_non_syscall() so gdb inferior calls work againDavid Mosberger-Tang
Fix convert_to_non_syscall() so it arranges for the kernel to be left via ia64_leave_kernel() rather than ia64_leave_syscall(). The latter no longer tolerates being called with pSys=0 and pNonSys=1. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-17[IA64] Correct convert_to_non_syscall()David Mosberger-Tang
convert_to_non_syscall() has the same problem that unwind_to_user() used to have. Fix it likewise. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-05-03Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse
2005-05-01[PATCH] convert that currently tests _NSIG directly to use valid_signal()Jesper Juhl
Convert most of the current code that uses _NSIG directly to instead use valid_signal(). This avoids gcc -W warnings and off-by-one errors. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-29[AUDIT] Don't allow ptrace to fool auditing, log arch of audited syscalls.
We were calling ptrace_notify() after auditing the syscall and arguments, but the debugger could have _changed_ them before the syscall was actually invoked. Reorder the calls to fix that. While we're touching ever call to audit_syscall_entry(), we also make it take an extra argument: the architecture of the syscall which was made, because some architectures allow more than one type of syscall. Also add an explicit success/failure flag to audit_syscall_exit(), for the benefit of architectures which return that in a condition register rather than only returning a single register. Change type of syscall return value to 'long' not 'int'. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!