Introduce stat2kname() and fd2kname()

These are similar to stat2devnm() and fd2devnm() but not limited to md
devices. If the device is a partition they will return its kernel name,
not the whole device's name. For more information see commit:
8d83493 ("Introduce devid2kname - slightly different to devid2devnm.")

Also remove unsued declaration for fmt_devname().

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 6808f62d..621edf3b 100644
--- a/lib.c
+++ b/lib.c
@@ -84,6 +84,21 @@ char *devid2kname(int devid)
 	return NULL;
 }
 
+char *stat2kname(struct stat *st)
+{
+	if ((S_IFMT & st->st_mode) != S_IFBLK)
+		return NULL;
+	return devid2kname(st->st_rdev);
+}
+
+char *fd2kname(int fd)
+{
+	struct stat stb;
+	if (fstat(fd, &stb) == 0)
+		return stat2kname(&stb);
+	return NULL;
+}
+
 char *devid2devnm(int devid)
 {
 	char path[30];