From: Anand Jain <anand.jain@oracle.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH v7 1/5] btrfs: add btrfs_strmatch helper
Date: Mon, 6 Apr 2020 19:51:07 +0800 [thread overview]
Message-ID: <1586173871-5559-2-git-send-email-anand.jain@oracle.com> (raw)
In-Reply-To: <1586173871-5559-1-git-send-email-anand.jain@oracle.com>
Add a generic helper to match the golden-string in the given-string,
and ignore the leading and trailing whitespaces if any.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Suggested-by: David Sterba <dsterba@suse.com>
---
v5: born
fs/btrfs/sysfs.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 93cf76118a04..7bb68cef98ab 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -809,6 +809,29 @@ static ssize_t btrfs_checksum_show(struct kobject *kobj,
BTRFS_ATTR(, checksum, btrfs_checksum_show);
+/*
+ * Match the %golden in the %given. Ignore the leading and trailing whitespaces
+ * if any.
+ */
+static int btrfs_strmatch(const char *given, const char *golden)
+{
+ size_t len = strlen(golden);
+ char *stripped;
+
+ /* strip leading whitespace */
+ stripped = skip_spaces(given);
+
+ if (strncmp(stripped, golden, len) == 0) {
+ /* strip trailing whitespace */
+ if (strlen(skip_spaces(stripped + len)))
+ return -EINVAL;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
static const struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(, label),
BTRFS_ATTR_PTR(, nodesize),
--
2.23.0
next prev parent reply other threads:[~2020-04-06 11:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 11:51 [PATCH v7 rebased 0/5] readmirror feature (sysfs and in-memory only approach; with new read_policy device) Anand Jain
2020-04-06 11:51 ` Anand Jain [this message]
2020-04-06 11:51 ` [PATCH v7 2/5] btrfs: create read policy framework Anand Jain
2020-04-06 11:51 ` [PATCH v7 3/5] btrfs: create read policy sysfs attribute, pid Anand Jain
2020-05-19 10:07 ` Johannes Thumshirn
2020-05-20 8:54 ` Anand Jain
2020-05-20 8:55 ` Johannes Thumshirn
2020-04-06 11:51 ` [PATCH v7 4/5] btrfs: introduce new device-state read_preferred Anand Jain
2020-04-06 11:51 ` [PATCH v7 5/5] btrfs: introduce new read_policy device Anand Jain
2020-04-30 9:02 ` [PATCH v7 rebased 0/5] readmirror feature (sysfs and in-memory only approach; with new read_policy device) Anand Jain
2020-05-15 19:58 ` David Sterba
2020-05-19 10:02 ` Anand Jain
2020-05-22 13:46 ` David Sterba
2020-05-26 7:23 ` Anand Jain
2020-06-01 15:07 ` David Sterba
2020-05-22 19:15 ` Steven Davies
-- strict thread matches above, loose matches on Subject: below --
2020-02-21 6:15 [PATCH v7 " Anand Jain
2020-02-21 6:15 ` [PATCH v7 1/5] btrfs: add btrfs_strmatch helper Anand Jain
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