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fs: fat: add file attributes to struct fs_dirent

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When reading a directory in the UEFI file system we have to return file
attributes and timestamps. Copy this data to the directory entry structure.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2021-05-15 22:06:16 +02:00
parent 41a4a30855
commit 13c11c6653
2 changed files with 49 additions and 5 deletions
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32
fs/fat/fat.c
View File

@ -1187,6 +1187,28 @@ out:
return ret == 0;
}
/**
* fat2rtc() - convert FAT time stamp to RTC file stamp
*
* @date: FAT date
* @time: FAT time
* @tm: RTC time stamp
*/
static void __maybe_unused fat2rtc(u16 date, u16 time, struct rtc_time *tm)
{
tm->tm_mday = date & 0x1f;
tm->tm_mon = (date & 0x1e0) >> 4;
tm->tm_year = (date >> 9) + 1980;
tm->tm_sec = (time & 0x1f) << 1;
tm->tm_min = (time & 0x7e0) >> 5;
tm->tm_hour = time >> 11;
rtc_calc_weekday(tm);
tm->tm_yday = 0;
tm->tm_isdst = 0;
}
int fat_size(const char *filename, loff_t *size)
{
fsdata fsdata;
@ -1325,7 +1347,15 @@ int fat_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp)
memset(dent, 0, sizeof(*dent));
strcpy(dent->name, dir->itr.name);
if (CONFIG_IS_ENABLED(EFI_LOADER)) {
dent->attr = dir->itr.dent->attr;
fat2rtc(le16_to_cpu(dir->itr.dent->cdate),
le16_to_cpu(dir->itr.dent->ctime), &dent->create_time);
fat2rtc(le16_to_cpu(dir->itr.dent->date),
le16_to_cpu(dir->itr.dent->time), &dent->change_time);
fat2rtc(le16_to_cpu(dir->itr.dent->adate),
0, &dent->access_time);
}
if (fat_itr_isdir(&dir->itr)) {
dent->type = FS_DT_DIR;
} else {

22
include/fs.h
View File

@ -6,6 +6,7 @@
#define _FS_H
#include <common.h>
#include <rtc.h>
struct cmd_tbl;
@ -160,13 +161,26 @@ int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
#define FS_DT_REG 8 /* regular file */
#define FS_DT_LNK 10 /* symbolic link */
/*
* A directory entry, returned by fs_readdir(). Returns information
/**
* struct fs_dirent - directory entry
*
* A directory entry, returned by fs_readdir(). Returns information
* about the file/directory at the current directory entry position.
*/
struct fs_dirent {
unsigned type; /* one of FS_DT_x (not a mask) */
loff_t size; /* size in bytes */
/** @type: one of FS_DT_x (not a mask) */
unsigned int type;
/** @size: file size */
loff_t size;
/** @flags: attribute flags (FS_ATTR_*) */
u32 attr;
/** create_time: time of creation */
struct rtc_time create_time;
/** access_time: time of last access */
struct rtc_time access_time;
/** change_time: time of last modification */
struct rtc_time change_time;
/** name: file name */
char name[256];
};