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| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-10-07 10:02:21 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-15 18:05:18 +0300 |
| commit | 5a0baf5123236362fda4e9772cc63b7faa16a0df (patch) | |
| tree | 613553545de11d225af3f73f59393e2b347516cb /tools/include | |
| parent | f948eb45e3af9fb18a0487d0797a773897ef6929 (diff) | |
| download | linux-5a0baf5123236362fda4e9772cc63b7faa16a0df.tar.xz | |
perf tools: Fix mode setting in copyfile_mode_ns()
slow_copyfile() opens the file by name, so "write" permissions must not
be removed in copyfile_mode_ns() before calling slow_copyfile().
Example:
Before:
$ sudo chmod +r /proc/kcore
$ sudo setcap "cap_sys_admin,cap_sys_ptrace,cap_syslog,cap_sys_rawio=ep" tools/perf/perf
$ tools/perf/perf buildid-cache -k /proc/kcore
Couldn't add /proc/kcore
After:
$ sudo chmod +r /proc/kcore
$ sudo setcap "cap_sys_admin,cap_sys_ptrace,cap_syslog,cap_sys_rawio=ep" tools/perf/perf
$ tools/perf/perf buildid-cache -v -k /proc/kcore
kcore added to build-id cache directory /home/ahunter/.debug/[kernel.kcore]/37e340b1b5a7cf4f57ba8de2bc777359588a957f/2019100709562289
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lore.kernel.org/lkml/20191007070221.11158-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
0 files changed, 0 insertions, 0 deletions