[PATCH v4 04/15] nilfs-utils: fsck: modify check_mount() function with the purpose of adding opportunity of RO mount checking

[Vyacheslav Dubeyko <slava-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>]

Hi,

This patch modifies check_mount() function with the purpose of adding opportunity of RO mount checking.

With the best regards,
Vyacheslav Dubeyko.
--
From: Vyacheslav Dubeyko <slava-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
Subject: [PATCH v4 04/15] nilfs-utils: fsck: modify check_mount() function with the purpose of adding opportunity of RO mount checking

This patch modifies check_mount() function with the purpose of adding opportunity of RO mount checking.

Signed-off-by: Vyacheslav Dubeyko <slava-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
---
 lib/ismounted.c |   15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/lib/ismounted.c b/lib/ismounted.c
index 7c5f0fc..d16dce9 100644
--- a/lib/ismounted.c
+++ b/lib/ismounted.c
@@ -31,6 +31,15 @@
 
 #define LINE_BUFFER_SIZE	256  /* Line buffer size for reading mtab */
 
+/*
+ * check_mount - Check that device mounted or not.
+ * @device: pointer on device.
+ *
+ * Return value:
+ * 0 - device is not mounted.
+ * -1 - device is mounted in RW mode.
+ * -2 - device is mounted in RO mode.
+ */
 int check_mount(const char *device)
 {
 	struct mntent *mnt;
@@ -38,6 +47,7 @@ int check_mount(const char *device)
 	FILE *f;
 	dev_t file_dev = 0, file_rdev = 0;
 	ino_t file_ino = 0;
+	int mount_type = 0;
 
 	f = setmntent(_PATH_MOUNTED, "r");
 	if (f == NULL) {
@@ -71,6 +81,9 @@ int check_mount(const char *device)
 		}
 	}
 
+	if (mnt)
+		mount_type = (hasmntopt(mnt, MNTOPT_RO)) ? -2 : -1;
+
 	endmntent(f);
-	return (mnt == NULL) ? 0 : -1;
+	return (mnt == NULL) ? 0 : mount_type;
 }
-- 
1.7.9.5



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