05aaebfb7b
Support for mtime and further expandability of dir command * include/grub/lib/datetime.h: moved to ... * include/grub/datetime.h: ... moved here and added declaration of grub_unixtime2datetime. All users updated * include/grub/fs.h: new syntax for dir and mtime functionin struct grub_fs * include/grub/fshelp.h: new declarations of GRUB_FSHELP_TYPE_MASK and GRUB_FSHELP_FLAGS_MASK * commands/ls.c (grub_ls_list_files): Write mtime in long format * fs/ext2.c (grub_ext2_dir): use new dir syntax and supply mtime (grub_ext2_mtime): new function * fs/hfsplus.c (grub_hfsplus_dir): use new dir syntax and supply mtime (grub_hfsplus_mtime): new function * fs/ufs.c (GRUB_UFS_ATTR_TYPE): new definition (GRUB_UFS_ATTR_FILE): likewise (GRUB_UFS_ATTR_LNK): likewise (struct grub_ufs_sblock): new fields mtime (grub_ufs_read_inode): new parameter to read inode to a separate buffer all users updated (grub_ufs_dir): mtime support (grub_ufs_mtime): new function * fs/affs.c (grub_affs_dir): use new dir syntax * fs/afs.c (grub_afs_dir): likewise * fs/cpio.c (grub_cpio_dir): likewise * fs/fat.c (grub_fat_find_dir): likewise * fs/hfs.c (grub_hfs_dir): likewise * fs/iso9660.c (grub_iso9660_dir): likewise * fs/jfs.c (grub_jfs_dir): likewise * fs/minix.c (grub_minix_dir): likewise * fs/ntfs.c (grub_ntfs_dir): likewise * fs/reiserfs.c (grub_reiserfs_dir): likewise * fs/sfs.c (grub_sfs_dir): likewise * fs/xfs.c (grub_xfs_dir): likewise * util/hostfs.c (grub_hostfs_dir): likewise * lib/datetime.c: moved to ... * normal/datetime.c: ... moved here (grub_unixtime2datetime): new function * kern/rescue.c (grub_rescue_print_files): use new dir syntax * normal/completition.c (iterate_dir): use new dir syntax * normal/misc.c (grub_normal_print_device_info): tell the last modification time of a volume * kern/fs.c (grub_fs_probe): updated dummy function to use new syntax * conf/common.rmk: added lib/datetime.c to ls.mod * conf/i386-coreboot.rmk (grub_emu_SOURCES): add normal/datetime.c (normal_mod_SOURCES): likewise (datetime_mod_SOURCES): Removed lib/datetime.c * conf/i386-efi.rmk: likewise * conf/i386-ieee1275.rmk: likewise * conf/i386-pc.rmk: likewise * conf/powerpc-ieee1275.rmk: likewise * conf/sparc64-ieee1275.rmk: likewise * conf/x86_64-efi.rmk: likewise
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* datetime.c - Module for common datetime function. */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2008 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <grub/datetime.h>
|
|
|
|
static char *grub_weekday_names[] =
|
|
{
|
|
"Sunday",
|
|
"Monday",
|
|
"Tuesday",
|
|
"Wednesday",
|
|
"Thursday",
|
|
"Friday",
|
|
"Saturday",
|
|
};
|
|
|
|
int
|
|
grub_get_weekday (struct grub_datetime *datetime)
|
|
{
|
|
int a, y, m;
|
|
|
|
a = (14 - datetime->month) / 12;
|
|
y = datetime->year - a;
|
|
m = datetime->month + 12 * a - 2;
|
|
|
|
return (datetime->day + y + y / 4 - y / 100 + y / 400 + (31 * m / 12)) % 7;
|
|
}
|
|
|
|
char *
|
|
grub_get_weekday_name (struct grub_datetime *datetime)
|
|
{
|
|
return grub_weekday_names[grub_get_weekday (datetime)];
|
|
}
|
|
|
|
#define SECPERMIN 60
|
|
#define SECPERHOUR (60*SECPERMIN)
|
|
#define SECPERDAY (24*SECPERHOUR)
|
|
#define SECPERYEAR (365*SECPERDAY)
|
|
#define SECPER4YEARS (4*SECPERYEAR+SECPERDAY)
|
|
|
|
|
|
void
|
|
grub_unixtime2datetime (grub_int32_t nix, struct grub_datetime *datetime)
|
|
{
|
|
int i;
|
|
int div;
|
|
grub_uint8_t months[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
|
|
/* In the period of validity of unixtime all years divisible by 4
|
|
are bissextile*/
|
|
/* Convenience: let's have 3 consecutive non-bissextile years
|
|
at the begining of the epoch. So count from 1973 instead of 1970 */
|
|
nix -= 3*SECPERYEAR + SECPERDAY;
|
|
/* Transform C divisions and modulos to mathematical ones */
|
|
div = nix / SECPER4YEARS;
|
|
if (nix < 0)
|
|
div--;
|
|
datetime->year = 1973 + 4 * div;
|
|
nix -= div * SECPER4YEARS;
|
|
|
|
/* On 31st december of bissextile years 365 days from the begining
|
|
of the year elapsed but year isn't finished yet*/
|
|
if (nix / SECPERYEAR == 4)
|
|
{
|
|
datetime->year += 3;
|
|
nix -= 3*SECPERYEAR;
|
|
}
|
|
else
|
|
{
|
|
datetime->year += nix / SECPERYEAR;
|
|
nix %= SECPERYEAR;
|
|
}
|
|
for (i = 0; i < 12
|
|
&& nix >= ((grub_int32_t) (i==1 && datetime->year % 4 == 0
|
|
? 29 : months[i]))*SECPERDAY; i++)
|
|
nix -= ((grub_int32_t) (i==1 && datetime->year % 4 == 0
|
|
? 29 : months[i]))*SECPERDAY;
|
|
datetime->month = i + 1;
|
|
datetime->day = 1 + (nix / SECPERDAY);
|
|
nix %= SECPERDAY;
|
|
datetime->hour = (nix / SECPERHOUR);
|
|
nix %= SECPERHOUR;
|
|
datetime->minute = nix / SECPERMIN;
|
|
datetime->second = nix % SECPERMIN;
|
|
}
|