Em Thu, Nov 12, 2015 at 04:04:44PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Nov 12, 2015 at 10:59:36AM -0800, Brendan Gregg escreveu:
> > On Thu, Nov 12, 2015 at 10:52 AM, Arnaldo Carvalho de Melo
> > <arnaldo.m...@gmail.com> wrote:
> > > Em Thu, Nov 12, 2015 at 10:27:26AM -0800, Brendan Gregg escreveu:
> > >> G'Day,
> > >>
> > >> # perf record -F 99 -a -g -- sleep 30
> > >> [...]
> > >> # perf report -n --stdio
> > >> File /tmp/perf-25958.map not owned by current user or root, ignoring it.
> > >>
> > >> Can root bypass this test? I'm root, and profiling apps from different
> > >
> > > In other places such tests are overridable via '-f' (force), this one
> > > should too, I think.
> > >
> > > # perf report
> > > File perf.data not owned by current user or root (use -f to override)
> > > [root@zoo linux]# ls -la perf.data
> > > -rw-------. 1 acme acme 20032 Nov 12 15:50 perf.data
> >
> > Yes, a -f option would work too...
>
> Cooking up a patch right now.
This way it gets consistent with the other checks, please let me know if
I can have your Tested-by, checking other places where this check is
done to make it follow this rule too.
- Arnaldo
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2853ad2bd435..f256fac1e722 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -44,7 +44,7 @@
struct report {
struct perf_tool tool;
struct perf_session *session;
- bool force, use_tui, use_gtk, use_stdio;
+ bool use_tui, use_gtk, use_stdio;
bool hide_unresolved;
bool dont_use_callchains;
bool show_full_info;
@@ -678,7 +678,7 @@ int cmd_report(int argc, const char **argv, const char
*prefix __maybe_unused)
"file", "vmlinux pathname"),
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
"file", "kallsyms pathname"),
- OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
+ OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE
kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
@@ -832,7 +832,7 @@ int cmd_report(int argc, const char **argv, const char
*prefix __maybe_unused)
}
file.path = input_name;
- file.force = report.force;
+ file.force = symbol_conf.force;
repeat:
session = perf_session__new(&file, false, &report.tool);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 09343a880c0b..cd08027a6d2c 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1436,9 +1436,9 @@ int dso__load(struct dso *dso, struct map *map,
symbol_filter_t filter)
if (lstat(dso->name, &st) < 0)
goto out;
- if (st.st_uid && (st.st_uid != geteuid())) {
+ if (!symbol_conf.force && st.st_uid && (st.st_uid !=
geteuid())) {
pr_warning("File %s not owned by current user or root, "
- "ignoring it.\n", dso->name);
+ "ignoring it (use -f to override).\n",
dso->name);
goto out;
}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 40073c60b83d..dcd786e364f2 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -84,6 +84,7 @@ struct symbol_conf {
unsigned short priv_size;
unsigned short nr_events;
bool try_vmlinux_path,
+ force,
ignore_vmlinux,
ignore_vmlinux_buildid,
show_kernel_path,
--
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