Commit 1ce5ab7c authored by Wyes Karny's avatar Wyes Karny Committed by Shuah Khan
Browse files

cpupower: Add is_valid_path API 



Add is_valid_path API to check whether the sysfs file is present or not.

Suggested-by: default avatarGautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarWyes Karny <wyes.karny@amd.com>
Tested-by: default avatarPerry Yuan <Perry.Yuan@amd.com>
Acked-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent a1cf97c2

tools/power/cpupower/lib/cpupower.c

+7 −0
Original line number Diff line number Diff line
@@ -14,6 +14,13 @@ 
#include "cpupower.h"

#include "cpupower_intern.h"



int is_valid_path(const char *path)

{

	if (access(path, F_OK) == -1)

		return 0;

	return 1;

}



unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen)

{

	ssize_t numread;

tools/power/cpupower/lib/cpupower_intern.h

+1 −0
Original line number Diff line number Diff line
@@ -7,5 +7,6 @@ 


#define SYSFS_PATH_MAX 255



int is_valid_path(const char *path);

unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen);

unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen);