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2016-07-12tools: Introduce str_error_r()Arnaldo Carvalho de Melo1-0/+2
The tools so far have been using the strerror_r() GNU variant, that returns a string, be it the buffer passed or something else. But that, besides being tricky in cases where we expect that the function using strerror_r() returns the error formatted in a provided buffer (we have to check if it returned something else and copy that instead), breaks the build on systems not using glibc, like Alpine Linux, where musl libc is used. So, introduce yet another wrapper, str_error_r(), that has the GNU interface, but uses the portable XSI variant of strerror_r(), so that users rest asured that the provided buffer is used and it is what is returned. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-d4t42fnf48ytlk8rjxs822tf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-12-16perf tools: Move strlcpy() from perf to tools/lib/string.cJosh Poimboeuf1-0/+4
strlcpy() will be needed by the subcmd library. Move it to the shared tools/lib/string.c file which can be used by other tools. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-18tools: Clone the kernel's strtobool functionWang Nan1-0/+2
Copying it to tools/lib/string.c, the counterpart to the kernel's lib/string.c. This is preparation for enhancing BPF program configuration, which will allow config string like 'inlines=yes'. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1447675815-166222-6-git-send-email-wangnan0@huawei.com [ Copied it to tools/lib/string.c instead, to make it usable by other tools/ ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-11-18tools: Adopt memdup() from tools/perf, moving it to tools/lib/string.cArnaldo Carvalho de Melo1-0/+9
That will contain more string functions with counterparts, sometimes verbatim copies, in the kernel. Acked-by: Wang Nan <wangnan0@huawei.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/n/tip-rah6g97kn21vfgmlramorz6o@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>