lkml.org 
[lkml]   [2019]   [Sep]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 2/4] staging: exfat: drop duplicate date_time_t struct
Date
Use timestamp_t for everything and cleanup duplicate code.

Signed-off-by: Valentin Vidic <vvidic@valentin-vidic.from.hr>
---
drivers/staging/exfat/exfat.h | 35 +++---
drivers/staging/exfat/exfat_super.c | 158 ++++++++--------------------
2 files changed, 55 insertions(+), 138 deletions(-)

diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 0aa14dea4e09..58e1e889779f 100644
--- a/drivers/staging/exfat/exfat.h
+++ b/drivers/staging/exfat/exfat.h
@@ -241,16 +241,6 @@ static inline u16 get_row_index(u16 i)
#define UNI_PAR_DIR_NAME "\0.\0."
#endif

-struct date_time_t {
- u16 Year;
- u16 Month;
- u16 Day;
- u16 Hour;
- u16 Minute;
- u16 Second;
- u16 MilliSecond;
-};
-
struct part_info_t {
u32 Offset; /* start sector number of the partition */
u32 Size; /* in sectors */
@@ -289,6 +279,16 @@ struct file_id_t {
u32 hint_last_clu;
};

+struct timestamp_t {
+ u16 millisec; /* 0 ~ 999 */
+ u16 sec; /* 0 ~ 59 */
+ u16 min; /* 0 ~ 59 */
+ u16 hour; /* 0 ~ 23 */
+ u16 day; /* 1 ~ 31 */
+ u16 mon; /* 1 ~ 12 */
+ u16 year; /* 0 ~ 127 (since 1980) */
+};
+
struct dir_entry_t {
char Name[MAX_NAME_LENGTH * MAX_CHARSET_SIZE];

@@ -298,18 +298,9 @@ struct dir_entry_t {
u32 Attr;
u64 Size;
u32 NumSubdirs;
- struct date_time_t CreateTimestamp;
- struct date_time_t ModifyTimestamp;
- struct date_time_t AccessTimestamp;
-};
-
-struct timestamp_t {
- u16 sec; /* 0 ~ 59 */
- u16 min; /* 0 ~ 59 */
- u16 hour; /* 0 ~ 23 */
- u16 day; /* 1 ~ 31 */
- u16 mon; /* 1 ~ 12 */
- u16 year; /* 0 ~ 127 (since 1980) */
+ struct timestamp_t CreateTimestamp;
+ struct timestamp_t ModifyTimestamp;
+ struct timestamp_t AccessTimestamp;
};

/* MS_DOS FAT partition boot record (512 bytes) */
diff --git a/drivers/staging/exfat/exfat_super.c b/drivers/staging/exfat/exfat_super.c
index 3a58907caf7c..54b6c2ff3c96 100644
--- a/drivers/staging/exfat/exfat_super.c
+++ b/drivers/staging/exfat/exfat_super.c
@@ -56,16 +56,16 @@ static void exfat_write_super(struct super_block *sb);
#define UNIX_SECS_2108 4354819200L

/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
-static void exfat_time_fat2unix(struct timespec64 *ts, struct date_time_t *tp)
+static void exfat_time_fat2unix(struct timespec64 *ts, struct timestamp_t *tp)
{
- ts->tv_sec = mktime64(tp->Year + 1980, tp->Month + 1, tp->Day,
- tp->Hour, tp->Minute, tp->Second);
+ ts->tv_sec = mktime64(tp->year + 1980, tp->mon + 1, tp->day,
+ tp->hour, tp->min, tp->sec);

- ts->tv_nsec = tp->MilliSecond * NSEC_PER_MSEC;
+ ts->tv_nsec = tp->millisec * NSEC_PER_MSEC;
}

/* Convert linear UNIX date to a FAT time/date pair. */
-static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
+static void exfat_time_unix2fat(struct timespec64 *ts, struct timestamp_t *tp)
{
time64_t second = ts->tv_sec;
struct tm tm;
@@ -73,69 +73,42 @@ static void exfat_time_unix2fat(struct timespec64 *ts, struct date_time_t *tp)
time64_to_tm(second, 0, &tm);

if (second < UNIX_SECS_1980) {
- tp->MilliSecond = 0;
- tp->Second = 0;
- tp->Minute = 0;
- tp->Hour = 0;
- tp->Day = 1;
- tp->Month = 1;
- tp->Year = 0;
+ tp->millisec = 0;
+ tp->sec = 0;
+ tp->min = 0;
+ tp->hour = 0;
+ tp->day = 1;
+ tp->mon = 1;
+ tp->year = 0;
return;
}

if (second >= UNIX_SECS_2108) {
- tp->MilliSecond = 999;
- tp->Second = 59;
- tp->Minute = 59;
- tp->Hour = 23;
- tp->Day = 31;
- tp->Month = 12;
- tp->Year = 127;
+ tp->millisec = 999;
+ tp->sec = 59;
+ tp->min = 59;
+ tp->hour = 23;
+ tp->day = 31;
+ tp->mon = 12;
+ tp->year = 127;
return;
}

- tp->MilliSecond = ts->tv_nsec / NSEC_PER_MSEC;
- tp->Second = tm.tm_sec;
- tp->Minute = tm.tm_min;
- tp->Hour = tm.tm_hour;
- tp->Day = tm.tm_mday;
- tp->Month = tm.tm_mon + 1;
- tp->Year = tm.tm_year + 1900 - 1980;
+ tp->millisec = ts->tv_nsec / NSEC_PER_MSEC;
+ tp->sec = tm.tm_sec;
+ tp->min = tm.tm_min;
+ tp->hour = tm.tm_hour;
+ tp->day = tm.tm_mday;
+ tp->mon = tm.tm_mon + 1;
+ tp->year = tm.tm_year + 1900 - 1980;
}

struct timestamp_t *tm_current(struct timestamp_t *tp)
{
- time64_t second = ktime_get_real_seconds();
- struct tm tm;
-
- time64_to_tm(second, 0, &tm);
-
- if (second < UNIX_SECS_1980) {
- tp->sec = 0;
- tp->min = 0;
- tp->hour = 0;
- tp->day = 1;
- tp->mon = 1;
- tp->year = 0;
- return tp;
- }
+ struct timespec64 ts;

- if (second >= UNIX_SECS_2108) {
- tp->sec = 59;
- tp->min = 59;
- tp->hour = 23;
- tp->day = 31;
- tp->mon = 12;
- tp->year = 127;
- return tp;
- }
-
- tp->sec = tm.tm_sec;
- tp->min = tm.tm_min;
- tp->hour = tm.tm_hour;
- tp->day = tm.tm_mday;
- tp->mon = tm.tm_mon + 1;
- tp->year = tm.tm_year + 1900 - 1980;
+ ktime_get_real_ts64(&ts);
+ exfat_time_unix2fat(&ts, tp);

return tp;
}
@@ -1500,7 +1473,6 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
int ret = FFS_SUCCESS;
struct chain_t dir;
struct uni_name_t uni_name;
- struct timestamp_t tm;
struct dentry_t *ep, *ep2;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
@@ -1518,11 +1490,11 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
(fid->entry == -1)) {
info->Attr = ATTR_SUBDIR;
memset((char *)&info->CreateTimestamp, 0,
- sizeof(struct date_time_t));
+ sizeof(struct timestamp_t));
memset((char *)&info->ModifyTimestamp, 0,
- sizeof(struct date_time_t));
+ sizeof(struct timestamp_t));
memset((char *)&info->AccessTimestamp, 0,
- sizeof(struct date_time_t));
+ sizeof(struct timestamp_t));
strcpy(info->ShortName, ".");
strcpy(info->Name, ".");

@@ -1573,25 +1545,9 @@ static int ffsReadStat(struct inode *inode, struct dir_entry_t *info)
/* set FILE_INFO structure using the acquired struct dentry_t */
info->Attr = p_fs->fs_func->get_entry_attr(ep);

- p_fs->fs_func->get_entry_time(ep, &tm, TM_CREATE);
- info->CreateTimestamp.Year = tm.year;
- info->CreateTimestamp.Month = tm.mon;
- info->CreateTimestamp.Day = tm.day;
- info->CreateTimestamp.Hour = tm.hour;
- info->CreateTimestamp.Minute = tm.min;
- info->CreateTimestamp.Second = tm.sec;
- info->CreateTimestamp.MilliSecond = 0;
-
- p_fs->fs_func->get_entry_time(ep, &tm, TM_MODIFY);
- info->ModifyTimestamp.Year = tm.year;
- info->ModifyTimestamp.Month = tm.mon;
- info->ModifyTimestamp.Day = tm.day;
- info->ModifyTimestamp.Hour = tm.hour;
- info->ModifyTimestamp.Minute = tm.min;
- info->ModifyTimestamp.Second = tm.sec;
- info->ModifyTimestamp.MilliSecond = 0;
-
- memset((char *) &info->AccessTimestamp, 0, sizeof(struct date_time_t));
+ p_fs->fs_func->get_entry_time(ep, &info->CreateTimestamp, TM_CREATE);
+ p_fs->fs_func->get_entry_time(ep, &info->ModifyTimestamp, TM_MODIFY);
+ memset((char *)&info->AccessTimestamp, 0, sizeof(struct timestamp_t));

*(uni_name.name) = 0x0;
/* XXX this is very bad for exfat cuz name is already included in es.
@@ -1650,7 +1606,6 @@ static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
{
sector_t sector = 0;
int ret = FFS_SUCCESS;
- struct timestamp_t tm;
struct dentry_t *ep, *ep2;
struct entry_set_cache_t *es = NULL;
struct super_block *sb = inode->i_sb;
@@ -1697,22 +1652,8 @@ static int ffsWriteStat(struct inode *inode, struct dir_entry_t *info)
p_fs->fs_func->set_entry_attr(ep, info->Attr);

/* set FILE_INFO structure using the acquired struct dentry_t */
- tm.sec = info->CreateTimestamp.Second;
- tm.min = info->CreateTimestamp.Minute;
- tm.hour = info->CreateTimestamp.Hour;
- tm.day = info->CreateTimestamp.Day;
- tm.mon = info->CreateTimestamp.Month;
- tm.year = info->CreateTimestamp.Year;
- p_fs->fs_func->set_entry_time(ep, &tm, TM_CREATE);
-
- tm.sec = info->ModifyTimestamp.Second;
- tm.min = info->ModifyTimestamp.Minute;
- tm.hour = info->ModifyTimestamp.Hour;
- tm.day = info->ModifyTimestamp.Day;
- tm.mon = info->ModifyTimestamp.Month;
- tm.year = info->ModifyTimestamp.Year;
- p_fs->fs_func->set_entry_time(ep, &tm, TM_MODIFY);
-
+ p_fs->fs_func->set_entry_time(ep, &info->CreateTimestamp, TM_CREATE);
+ p_fs->fs_func->set_entry_time(ep, &info->ModifyTimestamp, TM_MODIFY);
p_fs->fs_func->set_entry_size(ep2, info->Size);

if (p_fs->vol_type != EXFAT) {
@@ -1939,7 +1880,6 @@ static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
sector_t sector;
struct chain_t dir, clu;
struct uni_name_t uni_name;
- struct timestamp_t tm;
struct dentry_t *ep;
struct super_block *sb = inode->i_sb;
struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
@@ -2036,26 +1976,12 @@ static int ffsReadDir(struct inode *inode, struct dir_entry_t *dir_entry)
buf_lock(sb, sector);
dir_entry->Attr = fs_func->get_entry_attr(ep);

- fs_func->get_entry_time(ep, &tm, TM_CREATE);
- dir_entry->CreateTimestamp.Year = tm.year;
- dir_entry->CreateTimestamp.Month = tm.mon;
- dir_entry->CreateTimestamp.Day = tm.day;
- dir_entry->CreateTimestamp.Hour = tm.hour;
- dir_entry->CreateTimestamp.Minute = tm.min;
- dir_entry->CreateTimestamp.Second = tm.sec;
- dir_entry->CreateTimestamp.MilliSecond = 0;
-
- fs_func->get_entry_time(ep, &tm, TM_MODIFY);
- dir_entry->ModifyTimestamp.Year = tm.year;
- dir_entry->ModifyTimestamp.Month = tm.mon;
- dir_entry->ModifyTimestamp.Day = tm.day;
- dir_entry->ModifyTimestamp.Hour = tm.hour;
- dir_entry->ModifyTimestamp.Minute = tm.min;
- dir_entry->ModifyTimestamp.Second = tm.sec;
- dir_entry->ModifyTimestamp.MilliSecond = 0;
-
+ fs_func->get_entry_time(ep, &dir_entry->CreateTimestamp,
+ TM_CREATE);
+ fs_func->get_entry_time(ep, &dir_entry->ModifyTimestamp,
+ TM_MODIFY);
memset((char *)&dir_entry->AccessTimestamp, 0,
- sizeof(struct date_time_t));
+ sizeof(struct timestamp_t));

*(uni_name.name) = 0x0;
fs_func->get_uni_name_from_ext_entry(sb, &dir, dentry,
--
2.20.1
\
 
 \ /
  Last update: 2019-09-08 19:36    [W:0.053 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site