Commit 42e3c4a1 authored Dec 11, 2014 by Arnaldo Carvalho de Melo

tools lib fs: Add sysctl__read_int helper

Will come in handy for tools, see next patches.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-nay9j62ztxpytt4ew1tkl4op@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 3a351127

tools/lib/api/fs/fs.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -184,3 +184,16 @@ int filename__read_int(const char filename, int value)
		close(fd);
		return err;
		}

		int sysctl__read_int(const char sysctl, int value)
		{
		char path[PATH_MAX];
		const char *procfs = procfs__mountpoint();

		if (!procfs)
		return -1;

		snprintf(path, sizeof(path), "%s/sys/%s", procfs, sysctl);

		return filename__read_int(path, value);
		}

tools/lib/api/fs/fs.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -13,4 +13,5 @@ const char *sysfs__mountpoint(void);
		const char *procfs__mountpoint(void);

		int filename__read_int(const char filename, int value);
		int sysctl__read_int(const char sysctl, int value);
		#endif /* __API_FS__ */

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