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-rw-r--r--lib/libmtd_legacy.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/libmtd_legacy.c b/lib/libmtd_legacy.c
index d6c3938..d3f1672 100644
--- a/lib/libmtd_legacy.c
+++ b/lib/libmtd_legacy.c
@@ -170,6 +170,31 @@ int legacy_libmtd_open(void)
}
/**
+ * legacy_dev_presentl - legacy version of 'mtd_dev_present()'.
+ * @info: the MTD device information is returned here
+ *
+ * When the kernel does not provide sysfs files for the MTD subsystem,
+ * fall-back to parsing the /proc/mtd file to determine whether an mtd device
+ * number @mtd_num is present.
+ */
+int legacy_dev_present(int mtd_num)
+{
+ int ret;
+ struct proc_parse_info pi;
+
+ ret = proc_parse_start(&pi);
+ if (ret)
+ return -1;
+
+ while (proc_parse_next(&pi)) {
+ if (pi.mtd_num == mtd_num)
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
* legacy_mtd_get_info - legacy version of 'mtd_get_info()'.
* @info: the MTD device information is returned here
*