Messages in this thread Patch in this message | | | From | Roland McGrath <> | Subject | [PATCH 21/27] ptrace: generic PTRACE_SINGLEBLOCK | Date | Sun, 25 Nov 2007 14:06:11 -0800 (PST) |
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This makes ptrace_request handle PTRACE_SINGLEBLOCK along with PTRACE_CONT et al. The new generic code makes use of the arch_has_block_step macro and generic entry points on machines that define them.
Signed-off-by: Roland McGrath <roland@redhat.com> --- kernel/ptrace.c | 15 ++++++++++++++- 1 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 309796a..2824726 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -373,6 +373,12 @@ static int ptrace_setsiginfo(struct task_struct *child, siginfo_t __user * data) #define is_singlestep(request) 0 #endif +#ifdef PTRACE_SINGLEBLOCK +#define is_singleblock(request) ((request) == PTRACE_SINGLEBLOCK) +#else +#define is_singleblock(request) 0 +#endif + #ifdef PTRACE_SYSEMU #define is_sysemu_singlestep(request) ((request) == PTRACE_SYSEMU_SINGLESTEP) #else @@ -396,7 +402,11 @@ static int ptrace_resume(struct task_struct *child, long request, long data) clear_tsk_thread_flag(child, TIF_SYSCALL_EMU); #endif - if (is_singlestep(request) || is_sysemu_singlestep(request)) { + if (is_singleblock(request)) { + if (unlikely(!arch_has_block_step())) + return -EIO; + user_enable_block_step(child); + } else if (is_singlestep(request) || is_sysemu_singlestep(request)) { if (unlikely(!arch_has_single_step())) return -EIO; user_enable_single_step(child); @@ -438,6 +448,9 @@ int ptrace_request(struct task_struct *child, long request, #ifdef PTRACE_SINGLESTEP case PTRACE_SINGLESTEP: #endif +#ifdef PTRACE_SINGLEBLOCK + case PTRACE_SINGLEBLOCK: +#endif #ifdef PTRACE_SYSEMU case PTRACE_SYSEMU: case PTRACE_SYSEMU_SINGLESTEP: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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