| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20230112133503.16802-1-frank.li@vivo.com>
Date: Thu, 12 Jan 2023 21:35:03 +0800
From: Yangtao Li <frank.li@...o.com>
To: jaegeuk@...nel.org, chao@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Yangtao Li <frank.li@...o.com>
Subject: [PATCH 2/3] f2fs: add F2FS_IOC_SET_COMPRESS_OPTION_V2 ioctl
Added a new F2FS_IOC_SET_COMPRESS_OPTION_V2 ioctl to change file
compression option of a file.
struct f2fs_comp_option_v2 {
union {
struct {
__u8 algorithm;
__u8 log_cluster_size;
__u16 compress_flag;
};
struct f2fs_comp_option option;
};
};
struct f2fs_comp_option_v2 option;
option.algorithm = 2;
option.log_cluster_size = 2;
option.compress_flag = (5 << COMPRESS_LEVEL_OFFSET) | BIT(COMPRESS_CHKSUM);
ioctl(fd, F2FS_IOC_SET_COMPRESS_OPTION_V2, &option);
Signed-off-by: Yangtao Li <frank.li@...o.com>
---
fs/f2fs/f2fs.h | 8 +-------
fs/f2fs/file.c | 41 ++++++++++++++++++++++++++++++++-------
include/uapi/linux/f2fs.h | 21 ++++++++++++++++++++
3 files changed, 56 insertions(+), 14 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index f3c5f7740c1a..c2267f44bcf8 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -25,6 +25,7 @@
#include <linux/quotaops.h>
#include <linux/part_stat.h>
#include <crypto/hash.h>
+#include <uapi/linux/f2fs.h>
#include <linux/fscrypt.h>
#include <linux/fsverity.h>
@@ -1501,11 +1502,6 @@ enum compress_algorithm_type {
COMPRESS_MAX,
};
-enum compress_flag {
- COMPRESS_CHKSUM,
- COMPRESS_MAX_FLAG,
-};
-
#define COMPRESS_WATERMARK 20
#define COMPRESS_PERCENT 20
@@ -1521,8 +1517,6 @@ struct compress_data {
#define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000
-#define COMPRESS_LEVEL_OFFSET 8
-
/* compress context */
struct compress_ctx {
struct inode *inode; /* inode the context belong to */
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f5c1b7814954..719706ef0d46 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -25,6 +25,8 @@
#include <linux/fileattr.h>
#include <linux/fadvise.h>
#include <linux/iomap.h>
+#include <linux/zstd.h>
+#include <linux/lz4.h>
#include "f2fs.h"
#include "node.h"
@@ -3910,12 +3912,13 @@ static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
return 0;
}
-static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
+static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg,
+ unsigned int cmd)
{
struct inode *inode = file_inode(filp);
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
- struct f2fs_comp_option option;
- int ret = 0;
+ struct f2fs_comp_option_v2 option;
+ int ret = 0, len;
if (!f2fs_sb_has_compression(sbi))
return -EOPNOTSUPP;
@@ -3923,8 +3926,12 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
if (!(filp->f_mode & FMODE_WRITE))
return -EBADF;
- if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
- sizeof(option)))
+ if (cmd == F2FS_IOC_SET_COMPRESS_OPTION_V2)
+ len = sizeof(struct f2fs_comp_option_v2);
+ else
+ len = sizeof(struct f2fs_comp_option);
+
+ if (copy_from_user(&option, (void __user *)arg, len))
return -EFAULT;
if (!f2fs_compressed_file(inode) ||
@@ -3933,6 +3940,21 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
option.algorithm >= COMPRESS_MAX)
return -EINVAL;
+ if (cmd == F2FS_IOC_SET_COMPRESS_OPTION_V2) {
+ unsigned int level = GET_COMPRESS_LEVEL(option.compress_flag);
+
+ switch (option.algorithm) {
+ case COMPRESS_LZ4:
+ if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL)
+ return -EINVAL;
+ break;
+ case COMPRESS_ZSTD:
+ if (!level || level > zstd_max_clevel())
+ return -EINVAL;
+ break;
+ }
+ }
+
file_start_write(filp);
inode_lock(inode);
@@ -3948,7 +3970,10 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
F2FS_I(inode)->i_compress_algorithm = option.algorithm;
F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
- F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
+ F2FS_I(inode)->i_cluster_size = BIT(option.log_cluster_size);
+
+ if (cmd == F2FS_IOC_SET_COMPRESS_OPTION_V2)
+ F2FS_I(inode)->i_compress_flag = option.compress_flag & COMPRESS_OPTION_MASK;
f2fs_mark_inode_dirty_sync(inode, true);
if (!f2fs_is_compress_backend_ready(inode))
@@ -4221,7 +4246,9 @@ static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case F2FS_IOC_GET_COMPRESS_OPTION:
return f2fs_ioc_get_compress_option(filp, arg);
case F2FS_IOC_SET_COMPRESS_OPTION:
- return f2fs_ioc_set_compress_option(filp, arg);
+ return f2fs_ioc_set_compress_option(filp, arg, F2FS_IOC_SET_COMPRESS_OPTION);
+ case F2FS_IOC_SET_COMPRESS_OPTION_V2:
+ return f2fs_ioc_set_compress_option(filp, arg, F2FS_IOC_SET_COMPRESS_OPTION_V2);
case F2FS_IOC_DECOMPRESS_FILE:
return f2fs_ioc_decompress_file(filp, arg);
case F2FS_IOC_COMPRESS_FILE:
diff --git a/include/uapi/linux/f2fs.h b/include/uapi/linux/f2fs.h
index 955d440be104..aaf7f55273fb 100644
--- a/include/uapi/linux/f2fs.h
+++ b/include/uapi/linux/f2fs.h
@@ -43,6 +43,8 @@
#define F2FS_IOC_DECOMPRESS_FILE _IO(F2FS_IOCTL_MAGIC, 23)
#define F2FS_IOC_COMPRESS_FILE _IO(F2FS_IOCTL_MAGIC, 24)
#define F2FS_IOC_START_ATOMIC_REPLACE _IO(F2FS_IOCTL_MAGIC, 25)
+#define F2FS_IOC_SET_COMPRESS_OPTION_V2 _IOW(F2FS_IOCTL_MAGIC, 26, \
+ struct f2fs_comp_option_v2)
/*
* should be same as XFS_IOC_GOINGDOWN.
@@ -62,6 +64,15 @@
#define F2FS_TRIM_FILE_ZEROOUT 0x2 /* zero out */
#define F2FS_TRIM_FILE_MASK 0x3
+/*
+ * Flags used by F2FS_IOC_SET_COMPRESS_OPTION_V2
+ */
+#define COMPRESS_CHKSUM 0x0 /* enable chksum for compress file */
+#define COMPRESS_LEVEL_OFFSET 8
+#define COMPRESS_LEVEL_MASK GENMASK(15, COMPRESS_LEVEL_OFFSET)
+#define COMPRESS_OPTION_MASK (COMPRESS_LEVEL_MASK | BIT(COMPRESS_CHKSUM))
+#define GET_COMPRESS_LEVEL(x) (((x) & COMPRESS_LEVEL_MASK) >> COMPRESS_LEVEL_OFFSET)
+
struct f2fs_gc_range {
__u32 sync;
__u64 start;
@@ -96,4 +107,14 @@ struct f2fs_comp_option {
__u8 log_cluster_size;
};
+struct f2fs_comp_option_v2 {
+ union {
+ struct {
+ __u8 algorithm;
+ __u8 log_cluster_size;
+ __u16 compress_flag;
+ };
+ struct f2fs_comp_option option;
+ };
+};
#endif /* _UAPI_LINUX_F2FS_H */
--
2.25.1
Powered by blists - more mailing lists