diff options
Diffstat (limited to 'fs/fat')
| -rw-r--r-- | fs/fat/fat.h | 3 | ||||
| -rw-r--r-- | fs/fat/inode.c | 55 | ||||
| -rw-r--r-- | fs/fat/misc.c | 9 |
3 files changed, 48 insertions, 19 deletions
diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 623f36f..12701a5 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -29,6 +29,7 @@ struct fat_mount_options { unsigned short fs_fmask; unsigned short fs_dmask; unsigned short codepage; /* Codepage for shortname conversions */ + int time_offset; /* Offset of timestamps from UTC (in minutes) */ char *iocharset; /* Charset used for filename input/display */ unsigned short shortname; /* flags for shortname display/create rule */ unsigned char name_check; /* r = relaxed, n = normal, s = strict */ @@ -45,7 +46,7 @@ struct fat_mount_options { flush:1, /* write things quickly */ nocase:1, /* Does this need case conversion? 0=need case conversion*/ usefree:1, /* Use free_clusters for FAT32 */ - tz_utc:1, /* Filesystem timestamps are in UTC */ + tz_set:1, /* Filesystem timestamps' offset set */ rodir:1, /* allow ATTR_RO for directory */ discard:1, /* Issue discard requests on deletions */ nfs:1; /* Do extra work needed for NFS export */ diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 5bafaad..3580681 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -26,6 +26,7 @@ #include <linux/writeback.h> #include <linux/log2.h> #include <linux/hash.h> +#include <linux/blkdev.h> #include <asm/unaligned.h> #include "fat.h" @@ -725,7 +726,8 @@ static int fat_show_options(struct seq_file *m, struct dentry *root) if (opts->allow_utime) seq_printf(m, ",allow_utime=%04o", opts->allow_utime); if (sbi->nls_disk) - seq_printf(m, ",codepage=%s", sbi->nls_disk->charset); + /* strip "cp" prefix from displayed option */ + seq_printf(m, ",codepage=%s", &sbi->nls_disk->charset[2]); if (isvfat) { if (sbi->nls_io) seq_printf(m, ",iocharset=%s", sbi->nls_io->charset); @@ -777,8 +779,12 @@ static int fat_show_options(struct seq_file *m, struct dentry *root) } if (opts->flush) seq_puts(m, ",flush"); - if (opts->tz_utc) - seq_puts(m, ",tz=UTC"); + if (opts->tz_set) { + if (opts->time_offset) + seq_printf(m, ",time_offset=%d", opts->time_offset); + else + seq_puts(m, ",tz=UTC"); + } if (opts->errors == FAT_ERRORS_CONT) seq_puts(m, ",errors=continue"); else if (opts->errors == FAT_ERRORS_PANIC) @@ -800,7 +806,8 @@ enum { Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes, Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, Opt_obsolete, Opt_flush, Opt_tz_utc, Opt_rodir, Opt_err_cont, - Opt_err_panic, Opt_err_ro, Opt_discard, Opt_nfs, Opt_err, + Opt_err_panic, Opt_err_ro, Opt_discard, Opt_nfs, Opt_time_offset, + Opt_err, }; static const match_table_t fat_tokens = { @@ -825,6 +832,7 @@ static const match_table_t fat_tokens = { {Opt_immutable, "sys_immutable"}, {Opt_flush, "flush"}, {Opt_tz_utc, "tz=UTC"}, + {Opt_time_offset, "time_offset=%d"}, {Opt_err_cont, "errors=continue"}, {Opt_err_panic, "errors=panic"}, {Opt_err_ro, "errors=remount-ro"}, @@ -909,7 +917,7 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, opts->utf8 = opts->unicode_xlate = 0; opts->numtail = 1; opts->usefree = opts->nocase = 0; - opts->tz_utc = 0; + opts->tz_set = 0; opts->nfs = 0; opts->errors = FAT_ERRORS_RO; *debug = 0; @@ -965,48 +973,57 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, break; case Opt_uid: if (match_int(&args[0], &option)) - return 0; + return -EINVAL; opts->fs_uid = make_kuid(current_user_ns(), option); if (!uid_valid(opts->fs_uid)) - return 0; + return -EINVAL; break; case Opt_gid: if (match_int(&args[0], &option)) - return 0; + return -EINVAL; opts->fs_gid = make_kgid(current_user_ns(), option); if (!gid_valid(opts->fs_gid)) - return 0; + return -EINVAL; break; case Opt_umask: if (match_octal(&args[0], &option)) - return 0; + return -EINVAL; opts->fs_fmask = opts->fs_dmask = option; break; case Opt_dmask: if (match_octal(&args[0], &option)) - return 0; + return -EINVAL; opts->fs_dmask = option; break; case Opt_fmask: if (match_octal(&args[0], &option)) - return 0; + return -EINVAL; opts->fs_fmask = option; break; case Opt_allow_utime: if (match_octal(&args[0], &option)) - return 0; + return -EINVAL; opts->allow_utime = option & (S_IWGRP | S_IWOTH); break; case Opt_codepage: if (match_int(&args[0], &option)) - return 0; + return -EINVAL; opts->codepage = option; break; case Opt_flush: opts->flush = 1; break; + case Opt_time_offset: + if (match_int(&args[0], &option)) + return -EINVAL; + if (option < -12 * 60 || option > 12 * 60) + return -EINVAL; + opts->tz_set = 1; + opts->time_offset = option; + break; case Opt_tz_utc: - opts->tz_utc = 1; + opts->tz_set = 1; + opts->time_offset = 0; break; case Opt_err_cont: opts->errors = FAT_ERRORS_CONT; @@ -1431,6 +1448,14 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, goto out_fail; } + if (sbi->options.discard) { + struct request_queue *q = bdev_get_queue(sb->s_bdev); + if (!blk_queue_discard(q)) + fat_msg(sb, KERN_WARNING, + "mounting with \"discard\" option, but " + "the device does not support discard"); + } + return 0; out_invalid: diff --git a/fs/fat/misc.c b/fs/fat/misc.c index 6d93360..5eb600d 100644 --- a/fs/fat/misc.c +++ b/fs/fat/misc.c @@ -212,8 +212,10 @@ void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts, + days_in_year[month] + day + DAYS_DELTA) * SECS_PER_DAY; - if (!sbi->options.tz_utc) + if (!sbi->options.tz_set) second += sys_tz.tz_minuteswest * SECS_PER_MIN; + else + second -= sbi->options.time_offset * SECS_PER_MIN; if (time_cs) { ts->tv_sec = second + (time_cs / 100); @@ -229,8 +231,9 @@ void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec *ts, __le16 *time, __le16 *date, u8 *time_cs) { struct tm tm; - time_to_tm(ts->tv_sec, sbi->options.tz_utc ? 0 : - -sys_tz.tz_minuteswest * 60, &tm); + time_to_tm(ts->tv_sec, + (sbi->options.tz_set ? sbi->options.time_offset : + -sys_tz.tz_minuteswest) * SECS_PER_MIN, &tm); /* FAT can only support year between 1980 to 2107 */ if (tm.tm_year < 1980 - 1900) { |
