62 lines
1.8 KiB
Diff
62 lines
1.8 KiB
Diff
commit 069e3725dd9be3b759a98e8c80ac5fc38b392b23
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Author: Arnaldo Carvalho de Melo <acme@redhat.com>
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Date: Tue Aug 9 12:42:13 2011 -0300
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perf tools: Check $HOME/.perfconfig ownership
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Just like we do already for perf.data files.
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Requested-by: Ingo Molnar <mingo@elte.hu>
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Cc: Ben Hutchings <ben@decadent.org.uk>
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Cc: Christian Ohm <chr.ohm@gmx.net>
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Cc: David Ahern <dsahern@gmail.com>
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Cc: Frederic Weisbecker <fweisbec@gmail.com>
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Cc: Jonathan Nieder <jrnieder@gmail.com>
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Cc: Mike Galbraith <efault@gmx.de>
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Cc: Paul Mackerras <paulus@samba.org>
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Cc: Peter Zijlstra <peterz@infradead.org>
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Cc: Stephane Eranian <eranian@google.com>
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Link: http://lkml.kernel.org/n/tip-qgokmxsmvppwpc5404qhyk7e@git.kernel.org
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
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index 6c86eca..fe02903 100644
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--- a/tools/perf/util/config.c
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+++ b/tools/perf/util/config.c
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@@ -413,13 +413,32 @@ int perf_config(config_fn_t fn, void *data)
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home = getenv("HOME");
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if (perf_config_global() && home) {
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char *user_config = strdup(mkpath("%s/.perfconfig", home));
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- if (!access(user_config, R_OK)) {
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- ret += perf_config_from_file(fn, user_config, data);
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- found += 1;
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+ struct stat st;
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+
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+ if (user_config == NULL) {
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+ warning("Not enough memory to process %s/.perfconfig, "
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+ "ignoring it.", home);
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+ goto out;
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+ }
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+
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+ if (stat(user_config, &st) < 0)
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+ goto out_free;
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+
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+ if (st.st_uid && (st.st_uid != geteuid())) {
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+ warning("File %s not owned by current user or root, "
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+ "ignoring it.", user_config);
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+ goto out_free;
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}
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+
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+ if (!st.st_size)
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+ goto out_free;
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+
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+ ret += perf_config_from_file(fn, user_config, data);
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+ found += 1;
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+out_free:
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free(user_config);
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}
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-
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+out:
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if (found == 0)
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return -1;
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return ret;
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