The function is used to check if one member disk is alive.
Signed-off-by: Xiao Ni <xni@xxxxxxxxxx>
Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxxxxxxxx>
---
lib.c | 11 +++++++++++
mdadm.h | 2 ++
2 files changed, 13 insertions(+)
diff --git a/lib.c b/lib.c
index 76d1fbb..7e3e3d4 100644
--- a/lib.c
+++ b/lib.c
@@ -27,6 +27,17 @@
#include <ctype.h>
#include <limits.h>
+bool is_dev_alive(char *path)
+{
+ if (!path)
+ return false;
+
+ if (access(path, R_OK) == 0)
+ return true;
+
+ return false;
+}
+
/* This fill contains various 'library' style function. They
* have no dependency on anything outside this file.
*/
diff --git a/mdadm.h b/mdadm.h
index 53ea0de..4e483bf 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -45,6 +45,7 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
#include <errno.h>
#include <string.h>
#include <syslog.h>
+#include <stdbool.h>
/* Newer glibc requires sys/sysmacros.h directly for makedev() */
#include <sys/sysmacros.h>
#ifdef __dietlibc__
@@ -1499,6 +1500,7 @@ extern int check_partitions(int fd, char *dname,
extern int fstat_is_blkdev(int fd, char *devname, dev_t *rdev);
extern int stat_is_blkdev(char *devname, dev_t *rdev);
+extern bool is_dev_alive(char *path);
extern int get_mdp_major(void);
extern int get_maj_min(char *dev, int *major, int *minor);
extern int dev_open(char *dev, int flags);
--
2.7.5
