Commit-ID: 42e3c4a1274d49b42e9d4306ec096b282a6e14aa Gitweb: http://git.kernel.org/tip/42e3c4a1274d49b42e9d4306ec096b282a6e14aa Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Thu, 11 Dec 2014 13:37:10 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Thu, 11 Dec 2014 17:53:00 -0300
tools lib fs: Add sysctl__read_int helper Will come in handy for tools, see next patches. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/lib/api/fs/fs.c | 13 +++++++++++++ tools/lib/api/fs/fs.h | 1 + 2 files changed, 14 insertions(+) diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c index b8d0df8..65d9be3 100644 --- a/tools/lib/api/fs/fs.c +++ b/tools/lib/api/fs/fs.c @@ -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); +} diff --git a/tools/lib/api/fs/fs.h b/tools/lib/api/fs/fs.h index 4d0aef6..6caa2bb 100644 --- a/tools/lib/api/fs/fs.h +++ b/tools/lib/api/fs/fs.h @@ -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__ */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
