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mkfs.f2fs: add -T flag

Browse Source 
T flag sets timestamps to a given value

Signed-off-by: Theotime Combes <tcombes@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Theotime Combes 2020-08-18 11:18:50 +00:00 committed by Jaegeuk Kim
parent f7029e2cf2
commit 5c723d1713
4 changed files with 28 additions and 13 deletions
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2
include/f2fs_fs.h
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@ -404,6 +404,7 @@ struct f2fs_configuration {
int large_nat_bitmap;
int fix_chksum; /* fix old cp.chksum position */
__le32 feature; /* defined features */
time_t fixed_time;
/* mkfs parameters */
u_int32_t next_free_nid;
@ -426,7 +427,6 @@ struct f2fs_configuration {
char *mount_point;
char *target_out_dir;
char *fs_config_file;
time_t fixed_time;
#ifdef HAVE_LIBSELINUX
struct selinux_opt seopt_file[8];
int nr_opt;

8
man/mkfs.f2fs.8
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@ -74,6 +74,10 @@ mkfs.f2fs \- create an F2FS file system
.I nodiscard/discard
]
[
.B \-T
.I timestamp
]
[
.B \-w
.I wanted-sector-size
]
@ -228,6 +232,10 @@ Enable sparse mode.
Specify 1 or 0 to enable or disable discard policy, respectively.
The default value is 1.
.TP
.BI \-T " timestamp"
Set inodes times to a given timestamp. By default, the current time will be used.
This behaviour corresponds to the value -1.
.TP
.BI \-w " wanted-sector-size"
Specify the sector size in bytes.
Without it, the sectors will be calculated by device sector size.

25
mkfs/f2fs_format.c
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@ -35,6 +35,9 @@ struct f2fs_checkpoint *cp;
#define last_zone(cur) ((cur - 1) * c.segs_per_zone)
#define last_section(cur) (cur + (c.secs_per_zone - 1) * c.segs_per_sec)
/* Return time fixed by the user or current time by default */
#define mkfs_time ((c.fixed_time == -1) ? time(NULL) : c.fixed_time)
static unsigned int quotatype_bits = 0;
const char *media_ext_lists[] = {
@ -1143,11 +1146,11 @@ static int f2fs_write_root_inode(void)
raw_node->i.i_size = cpu_to_le64(1 * blk_size_bytes); /* dentry */
raw_node->i.i_blocks = cpu_to_le64(2);
raw_node->i.i_atime = cpu_to_le32(time(NULL));
raw_node->i.i_atime = cpu_to_le32(mkfs_time);
raw_node->i.i_atime_nsec = 0;
raw_node->i.i_ctime = cpu_to_le32(time(NULL));
raw_node->i.i_ctime = cpu_to_le32(mkfs_time);
raw_node->i.i_ctime_nsec = 0;
raw_node->i.i_mtime = cpu_to_le32(time(NULL));
raw_node->i.i_mtime = cpu_to_le32(mkfs_time);
raw_node->i.i_mtime_nsec = 0;
raw_node->i.i_generation = 0;
raw_node->i.i_xattr_nid = 0;
@ -1164,7 +1167,7 @@ static int f2fs_write_root_inode(void)
raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID);
if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CRTIME)) {
raw_node->i.i_crtime = cpu_to_le32(time(NULL));
raw_node->i.i_crtime = cpu_to_le32(mkfs_time);
raw_node->i.i_crtime_nsec = 0;
}
@ -1301,11 +1304,11 @@ static int f2fs_write_qf_inode(int qtype)
raw_node->i.i_size = cpu_to_le64(1024 * 6); /* Hard coded */
raw_node->i.i_blocks = cpu_to_le64(1 + QUOTA_DATA(qtype));
raw_node->i.i_atime = cpu_to_le32(time(NULL));
raw_node->i.i_atime = cpu_to_le32(mkfs_time);
raw_node->i.i_atime_nsec = 0;
raw_node->i.i_ctime = cpu_to_le32(time(NULL));
raw_node->i.i_ctime = cpu_to_le32(mkfs_time);
raw_node->i.i_ctime_nsec = 0;
raw_node->i.i_mtime = cpu_to_le32(time(NULL));
raw_node->i.i_mtime = cpu_to_le32(mkfs_time);
raw_node->i.i_mtime_nsec = 0;
raw_node->i.i_generation = 0;
raw_node->i.i_xattr_nid = 0;
@ -1496,11 +1499,11 @@ static int f2fs_write_lpf_inode(void)
raw_node->i.i_size = cpu_to_le64(1 * blk_size_bytes);
raw_node->i.i_blocks = cpu_to_le64(2);
raw_node->i.i_atime = cpu_to_le32(time(NULL));
raw_node->i.i_atime = cpu_to_le32(mkfs_time);
raw_node->i.i_atime_nsec = 0;
raw_node->i.i_ctime = cpu_to_le32(time(NULL));
raw_node->i.i_ctime = cpu_to_le32(mkfs_time);
raw_node->i.i_ctime_nsec = 0;
raw_node->i.i_mtime = cpu_to_le32(time(NULL));
raw_node->i.i_mtime = cpu_to_le32(mkfs_time);
raw_node->i.i_mtime_nsec = 0;
raw_node->i.i_generation = 0;
raw_node->i.i_xattr_nid = 0;
@ -1520,7 +1523,7 @@ static int f2fs_write_lpf_inode(void)
raw_node->i.i_projid = cpu_to_le32(F2FS_DEF_PROJID);
if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CRTIME)) {
raw_node->i.i_crtime = cpu_to_le32(time(NULL));
raw_node->i.i_crtime = cpu_to_le32(mkfs_time);
raw_node->i.i_crtime_nsec = 0;
}

6
mkfs/f2fs_format_main.c
View File

@ -62,6 +62,7 @@ static void mkfs_usage()
MSG(0, " -s # of segments per section [default:1]\n");
MSG(0, " -S sparse mode\n");
MSG(0, " -t 0: nodiscard, 1: discard [default:1]\n");
MSG(0, " -T timestamps\n");
MSG(0, " -w wanted sector size\n");
MSG(0, " -z # of sections per zone [default:1]\n");
MSG(0, " -V print the version number and exit\n");
@ -123,7 +124,7 @@ static void add_default_options(void)
static void f2fs_parse_options(int argc, char *argv[])
{
static const char *option_string = "qa:c:C:d:e:E:g:il:mo:O:R:s:S:z:t:U:Vfw:";
static const char *option_string = "qa:c:C:d:e:E:g:il:mo:O:R:s:S:z:t:T:U:Vfw:";
int32_t option=0;
int val;
char *token;
@ -201,6 +202,9 @@ static void f2fs_parse_options(int argc, char *argv[])
case 't':
c.trim = atoi(optarg);
break;
case 'T':
c.fixed_time = strtoul(optarg, NULL, 0);
break;
case 'U':
c.vol_uuid = strdup(optarg);
break;