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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-12-06 11:09:46 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-12-17 14:59:08 -0300
commit5192bde7d98c99f2cd80225649e3c2e7493722f7 (patch)
treed122759d10f1630509d07aa0f161b42dda751f46 /fs/ceph/mds_client.c
parent7572588085a13d5db02bf159542189f52fdb507e (diff)
perf header: Fix unchecked usage of strncpy()
The strncpy() function may leave the destination string buffer unterminated, better use strlcpy() that we have a __weak fallback implementation for systems without it. This fixes this warning on an Alpine Linux Edge system with gcc 8.2: util/header.c: In function 'perf_event__synthesize_event_update_name': util/header.c:3625:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] strncpy(ev->data, evsel->name, len); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ util/header.c:3618:15: note: length computed here size_t len = strlen(evsel->name); ^~~~~~~~~~~~~~~~~~~ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: a6e5281780d1 ("perf tools: Add event_update event unit type") Link: https://lkml.kernel.org/n/tip-wycz66iy8dl2z3yifgqf894p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'fs/ceph/mds_client.c')
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