All of lore.kernel.org
 help / color / mirror / Atom feed
From: Chao Yu <yuchao0@huawei.com>
To: <jaegeuk@kernel.org>
Cc: <linux-f2fs-devel@lists.sourceforge.net>,
	<linux-kernel@vger.kernel.org>, <chao@kernel.org>,
	Chao Yu <yuchao0@huawei.com>
Subject: [PATCH 1/2] f2fs: compress: fix to disallow wildcard extension for hot/cold file
Date: Tue, 18 May 2021 17:54:57 +0800	[thread overview]
Message-ID: <20210518095458.99728-1-yuchao0@huawei.com> (raw)

If all files are hot or cold, hot/cold separation is not needed anymore,
so let's disallow configure wildcard extension.

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/f2fs.h  |  1 +
 fs/f2fs/namei.c | 12 ++++++++----
 fs/f2fs/sysfs.c |  3 +++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b753cc88c77e..ecb13c3b458d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3322,6 +3322,7 @@ void f2fs_handle_failed_inode(struct inode *inode);
 /*
  * namei.c
  */
+bool f2fs_is_wildcard_char(const char *ext);
 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 							bool hot, bool set);
 struct dentry *f2fs_get_parent(struct dentry *child);
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index a9cd9cf97229..8d78b96a8b3b 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -153,15 +153,17 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	return ERR_PTR(err);
 }
 
+bool f2fs_is_wildcard_char(const char *ext)
+{
+	return *ext == '*' && strlen(ext) == 1;
+}
+
 static inline int is_extension_exist(const unsigned char *s, const char *sub)
 {
 	size_t slen = strlen(s);
 	size_t sublen = strlen(sub);
 	int i;
 
-	if (sublen == 1 && *sub == '*')
-		return 1;
-
 	/*
 	 * filename format of multimedia file should be defined as:
 	 * "filename + '.' + extension + (optional: '.' + temp extension)".
@@ -306,9 +308,11 @@ static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
 	ext = F2FS_OPTION(sbi).extensions;
 
 	for (i = 0; i < ext_cnt; i++) {
+		if (f2fs_is_wildcard_char(ext[i]))
+			goto set_compress;
 		if (!is_extension_exist(name, ext[i]))
 			continue;
-
+set_compress:
 		set_compress_context(inode);
 		return;
 	}
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index dc71bc968c72..ff5acb4de1b6 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -343,6 +343,9 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
 		if (strlen(name) >= F2FS_EXTENSION_LEN)
 			return -EINVAL;
 
+		if (f2fs_is_wildcard_char(name))
+			return -EINVAL;
+
 		down_write(&sbi->sb_lock);
 
 		ret = f2fs_update_extension_list(sbi, name, hot, set);
-- 
2.29.2


WARNING: multiple messages have this Message-ID (diff)
From: Chao Yu <yuchao0@huawei.com>
To: <jaegeuk@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH 1/2] f2fs: compress: fix to disallow wildcard extension for hot/cold file
Date: Tue, 18 May 2021 17:54:57 +0800	[thread overview]
Message-ID: <20210518095458.99728-1-yuchao0@huawei.com> (raw)

If all files are hot or cold, hot/cold separation is not needed anymore,
so let's disallow configure wildcard extension.

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/f2fs.h  |  1 +
 fs/f2fs/namei.c | 12 ++++++++----
 fs/f2fs/sysfs.c |  3 +++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b753cc88c77e..ecb13c3b458d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3322,6 +3322,7 @@ void f2fs_handle_failed_inode(struct inode *inode);
 /*
  * namei.c
  */
+bool f2fs_is_wildcard_char(const char *ext);
 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
 							bool hot, bool set);
 struct dentry *f2fs_get_parent(struct dentry *child);
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index a9cd9cf97229..8d78b96a8b3b 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -153,15 +153,17 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
 	return ERR_PTR(err);
 }
 
+bool f2fs_is_wildcard_char(const char *ext)
+{
+	return *ext == '*' && strlen(ext) == 1;
+}
+
 static inline int is_extension_exist(const unsigned char *s, const char *sub)
 {
 	size_t slen = strlen(s);
 	size_t sublen = strlen(sub);
 	int i;
 
-	if (sublen == 1 && *sub == '*')
-		return 1;
-
 	/*
 	 * filename format of multimedia file should be defined as:
 	 * "filename + '.' + extension + (optional: '.' + temp extension)".
@@ -306,9 +308,11 @@ static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
 	ext = F2FS_OPTION(sbi).extensions;
 
 	for (i = 0; i < ext_cnt; i++) {
+		if (f2fs_is_wildcard_char(ext[i]))
+			goto set_compress;
 		if (!is_extension_exist(name, ext[i]))
 			continue;
-
+set_compress:
 		set_compress_context(inode);
 		return;
 	}
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index dc71bc968c72..ff5acb4de1b6 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -343,6 +343,9 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
 		if (strlen(name) >= F2FS_EXTENSION_LEN)
 			return -EINVAL;
 
+		if (f2fs_is_wildcard_char(name))
+			return -EINVAL;
+
 		down_write(&sbi->sb_lock);
 
 		ret = f2fs_update_extension_list(sbi, name, hot, set);
-- 
2.29.2



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

             reply	other threads:[~2021-05-18  9:55 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-18  9:54 Chao Yu [this message]
2021-05-18  9:54 ` [f2fs-dev] [PATCH 1/2] f2fs: compress: fix to disallow wildcard extension for hot/cold file Chao Yu
2021-05-18  9:54 ` [PATCH 2/2] f2fs: compress: fix to disallow temp extension Chao Yu
2021-05-18  9:54   ` [f2fs-dev] " Chao Yu
2021-05-20  2:21 ` [PATCH 1/2] f2fs: compress: fix to disallow wildcard extension for hot/cold file Jaegeuk Kim
2021-05-20  2:21   ` [f2fs-dev] " Jaegeuk Kim
2021-05-20  3:17   ` Chao Yu
2021-05-20  3:17     ` [f2fs-dev] " Chao Yu
2021-05-25 12:26     ` Jaegeuk Kim
2021-05-25 12:26       ` [f2fs-dev] " Jaegeuk Kim

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210518095458.99728-1-yuchao0@huawei.com \
    --to=yuchao0@huawei.com \
    --cc=chao@kernel.org \
    --cc=jaegeuk@kernel.org \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.