diff options
| -rw-r--r-- | kernel/trace/trace_syscalls.c | 47 |
1 files changed, 19 insertions, 28 deletions
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 4dc8b79..a72f3d8 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -114,7 +114,7 @@ print_syscall_enter(struct trace_iterator *iter, int flags, struct trace_entry *ent = iter->ent; struct syscall_trace_enter *trace; struct syscall_metadata *entry; - int i, ret, syscall; + int i, syscall; trace = (typeof(trace))ent; syscall = trace->nr; @@ -128,35 +128,28 @@ print_syscall_enter(struct trace_iterator *iter, int flags, goto end; } - ret = trace_seq_printf(s, "%s(", entry->name); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + trace_seq_printf(s, "%s(", entry->name); for (i = 0; i < entry->nb_args; i++) { + + if (trace_seq_has_overflowed(s)) + goto end; + /* parameter types */ - if (trace_flags & TRACE_ITER_VERBOSE) { - ret = trace_seq_printf(s, "%s ", entry->types[i]); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; - } + if (trace_flags & TRACE_ITER_VERBOSE) + trace_seq_printf(s, "%s ", entry->types[i]); + /* parameter values */ - ret = trace_seq_printf(s, "%s: %lx%s", entry->args[i], - trace->args[i], - i == entry->nb_args - 1 ? "" : ", "); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + trace_seq_printf(s, "%s: %lx%s", entry->args[i], + trace->args[i], + i == entry->nb_args - 1 ? "" : ", "); } - ret = trace_seq_putc(s, ')'); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; - + trace_seq_putc(s, ')'); end: - ret = trace_seq_putc(s, '\n'); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + trace_seq_putc(s, '\n'); - return TRACE_TYPE_HANDLED; + return trace_handle_return(s); } static enum print_line_t @@ -168,7 +161,6 @@ print_syscall_exit(struct trace_iterator *iter, int flags, struct syscall_trace_exit *trace; int syscall; struct syscall_metadata *entry; - int ret; trace = (typeof(trace))ent; syscall = trace->nr; @@ -176,7 +168,7 @@ print_syscall_exit(struct trace_iterator *iter, int flags, if (!entry) { trace_seq_putc(s, '\n'); - return TRACE_TYPE_HANDLED; + goto out; } if (entry->exit_event->event.type != ent->type) { @@ -184,12 +176,11 @@ print_syscall_exit(struct trace_iterator *iter, int flags, return TRACE_TYPE_UNHANDLED; } - ret = trace_seq_printf(s, "%s -> 0x%lx\n", entry->name, + trace_seq_printf(s, "%s -> 0x%lx\n", entry->name, trace->ret); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; - return TRACE_TYPE_HANDLED; + out: + return trace_handle_return(s); } extern char *__bad_type_size(void); |
