perf machine: Pass buffer size to machine__mmap_name
Don't blindly assume that the size of the buffer is enough, use snprintf. Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Zhang, Yanmin <yanmin_zhang@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@@ -629,14 +629,14 @@ void machines__process(struct rb_root *self, machine__process_t process, void *d
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}
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}
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char *machine__mmap_name(struct machine *self, char *buff)
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char *machine__mmap_name(struct machine *self, char *bf, size_t size)
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{
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if (machine__is_host(self))
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sprintf(buff, "[%s]", "kernel.kallsyms");
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snprintf(bf, size, "[%s]", "kernel.kallsyms");
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else if (machine__is_default_guest(self))
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sprintf(buff, "[%s]", "guest.kernel.kallsyms");
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snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
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else
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sprintf(buff, "[%s.%d]", "guest.kernel.kallsyms", self->pid);
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snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid);
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return buff;
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return bf;
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}
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