linux-stable/tools/perf/util/setns.c

// SPDX-License-Identifier: LGPL-2.1

#include "namespaces.h"
#include <unistd.h>
#include <sys/syscall.h>

int setns(int fd, int nstype)
{
	return syscall(__NR_setns, fd, nstype);
}
perf namespaces: Move the conditional setns() prototype to namespaces.h Out of util.h, to reduce its scope, and since we have a namespaces.h header, much better to have it there, where it is related to. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-zlu81bbtccuzygh7m8nmgybc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2019-07-05 16:59:06 +00:00			`// SPDX-License-Identifier: LGPL-2.1`

			`#include "namespaces.h"`
tools build: Add test for setns() And provide an alternative implementation to keep perf building on older distros as we're about to add initial support for namespaces. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Krister Johansen <kjlx@templeofstupid.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-bqdwijunhjlvps1ardykhw1i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2017-07-18 20:15:29 +00:00			`#include <unistd.h>`
			`#include <sys/syscall.h>`

			`int setns(int fd, int nstype)`
			`{`
			`return syscall(__NR_setns, fd, nstype);`
			`}`