| 1 |
diff -u2 -r kernel-source-2.6.0-clean/fs/fat/dir.c kernel-source-2.6.0/fs/fat/dir.c |
| 2 |
--- kernel-source-2.6.0-clean/fs/fat/dir.c 2003-10-08 21:24:01.000000000 +0200 |
| 3 |
+++ kernel-source-2.6.0/fs/fat/dir.c 2004-02-01 15:23:28.000000000 +0100 |
| 4 |
@@ -194,4 +194,5 @@ |
| 5 |
int chl, i, j, last_u, res = 0; |
| 6 |
loff_t i_pos, cpos = 0; |
| 7 |
+ int epoc = MSDOS_SB(sb)->options.epoc; |
| 8 |
|
| 9 |
while(1) { |
| 10 |
@@ -200,4 +201,6 @@ |
| 11 |
parse_record: |
| 12 |
long_slots = 0; |
| 13 |
+ if (epoc && (de->name[0] == EOD_FLAG)) |
| 14 |
+ goto EODir; |
| 15 |
if (de->name[0] == DELETED_FLAG) |
| 16 |
continue; |
| 17 |
@@ -259,4 +262,6 @@ |
| 18 |
goto parse_long; |
| 19 |
} |
| 20 |
+ if (epoc && (de->name[0] == EOD_FLAG)) |
| 21 |
+ goto EODir; |
| 22 |
if (de->name[0] == DELETED_FLAG) |
| 23 |
continue; |
| 24 |
@@ -363,4 +368,6 @@ |
| 25 |
loff_t i_pos, cpos; |
| 26 |
int ret = 0; |
| 27 |
+ int epoc = MSDOS_SB(sb)->options.epoc; |
| 28 |
+ int last_entry = 0; |
| 29 |
|
| 30 |
lock_kernel(); |
| 31 |
@@ -391,4 +398,8 @@ |
| 32 |
if (fat_get_entry(inode,&cpos,&bh,&de,&i_pos) == -1) |
| 33 |
goto EODir; |
| 34 |
+ if (epoc && (de->name[0] == EOD_FLAG)) |
| 35 |
+ last_entry = 1; |
| 36 |
+ if (last_entry) |
| 37 |
+ goto RecEnd; |
| 38 |
/* Check for long filename entry */ |
| 39 |
if (isvfat) { |
| 40 |
@@ -459,4 +470,8 @@ |
| 41 |
goto ParseLong; |
| 42 |
} |
| 43 |
+ if (epoc && (de->name[0] == EOD_FLAG)) { |
| 44 |
+ last_entry = 1; |
| 45 |
+ goto RecEnd; |
| 46 |
+ } |
| 47 |
if (de->name[0] == DELETED_FLAG) |
| 48 |
goto RecEnd; |
| 49 |
@@ -689,4 +704,20 @@ |
| 50 |
} |
| 51 |
|
| 52 |
+/* Set the first character of the next entry to zero. */ |
| 53 |
+void fat_write_zero_entry(struct inode *dir, loff_t curr) |
| 54 |
+{ |
| 55 |
+ struct msdos_dir_entry *de = NULL; |
| 56 |
+ struct buffer_head *bh = NULL; |
| 57 |
+ loff_t ipos,pos; |
| 58 |
+ |
| 59 |
+ pos = curr; |
| 60 |
+ if (fat_get_entry(dir,&pos,&bh,&de,&ipos) < 0) |
| 61 |
+ return; |
| 62 |
+ |
| 63 |
+ de->name[0] = EOD_FLAG; |
| 64 |
+ mark_buffer_dirty(bh); |
| 65 |
+ brelse(bh); |
| 66 |
+} |
| 67 |
+ |
| 68 |
/* This assumes that size of cluster is above the 32*slots */ |
| 69 |
|
| 70 |
@@ -698,4 +729,6 @@ |
| 71 |
int row; |
| 72 |
struct buffer_head *new_bh; |
| 73 |
+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc; |
| 74 |
+ int last_entry = 0; |
| 75 |
|
| 76 |
offset = curr = 0; |
| 77 |
@@ -709,7 +742,12 @@ |
| 78 |
} |
| 79 |
|
| 80 |
- if (IS_FREE((*de)->name)) { |
| 81 |
- if (++row == slots) |
| 82 |
+ if ((epoc && ((*de)->name[0] == EOD_FLAG))) |
| 83 |
+ last_entry = 1; |
| 84 |
+ if (last_entry || IS_FREE((*de)->name)) { |
| 85 |
+ if (++row == slots) { |
| 86 |
+ if (last_entry) |
| 87 |
+ fat_write_zero_entry(dir,curr); |
| 88 |
return offset; |
| 89 |
+ } |
| 90 |
} else { |
| 91 |
row = 0; |
| 92 |
@@ -730,4 +768,6 @@ |
| 93 |
} |
| 94 |
|
| 95 |
+ |
| 96 |
+ |
| 97 |
int fat_new_dir(struct inode *dir, struct inode *parent, int is_vfat) |
| 98 |
{ |
| 99 |
@@ -769,5 +809,9 @@ |
| 100 |
struct msdos_dir_entry **de, loff_t *i_pos) |
| 101 |
{ |
| 102 |
+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc; |
| 103 |
+ |
| 104 |
while (fat_get_entry(dir, pos, bh, de, i_pos) >= 0) { |
| 105 |
+ if (epoc && ((*de)->name[0] == EOD_FLAG)) |
| 106 |
+ return -ENOENT; |
| 107 |
/* free entry or long name entry or volume label */ |
| 108 |
if (!IS_FREE((*de)->name) && !((*de)->attr & ATTR_VOLUME)) |
| 109 |
diff -u2 -r kernel-source-2.6.0-clean/fs/fat/inode.c kernel-source-2.6.0/fs/fat/inode.c |
| 110 |
--- kernel-source-2.6.0-clean/fs/fat/inode.c 2003-11-24 08:13:12.000000000 +0100 |
| 111 |
+++ kernel-source-2.6.0/fs/fat/inode.c 2004-02-01 13:48:46.000000000 +0100 |
| 112 |
@@ -255,4 +255,5 @@ |
| 113 |
Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes, |
| 114 |
Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, |
| 115 |
+ Opt_epoc, |
| 116 |
Opt_obsolate, Opt_err, |
| 117 |
}; |
| 118 |
@@ -276,4 +277,5 @@ |
| 119 |
{Opt_debug, "debug"}, |
| 120 |
{Opt_immutable, "sys_immutable"}, |
| 121 |
+ {Opt_epoc, "epoc"}, |
| 122 |
{Opt_obsolate, "conv=binary"}, |
| 123 |
{Opt_obsolate, "conv=text"}, |
| 124 |
@@ -427,4 +429,8 @@ |
| 125 |
opts->codepage = option; |
| 126 |
break; |
| 127 |
+ case Opt_epoc: |
| 128 |
+ opts->epoc = 1; |
| 129 |
+ break; |
| 130 |
+ |
| 131 |
|
| 132 |
/* msdos specific */ |
| 133 |
diff -u2 -r kernel-source-2.6.0-clean/include/linux/msdos_fs.h kernel-source-2.6.0/include/linux/msdos_fs.h |
| 134 |
--- kernel-source-2.6.0-clean/include/linux/msdos_fs.h 2003-08-09 10:12:03.000000000 +0200 |
| 135 |
+++ kernel-source-2.6.0/include/linux/msdos_fs.h 2004-02-01 13:48:46.000000000 +0100 |
| 136 |
@@ -45,4 +45,5 @@ |
| 137 |
|
| 138 |
#define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */ |
| 139 |
+#define EOD_FLAG 0x00 /* marks end of directory when in name[0] for old fats */ |
| 140 |
#define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG) |
| 141 |
|
| 142 |
diff -u2 -r kernel-source-2.6.0-clean/include/linux/msdos_fs_sb.h kernel-source-2.6.0/include/linux/msdos_fs_sb.h |
| 143 |
--- kernel-source-2.6.0-clean/include/linux/msdos_fs_sb.h 2003-07-27 19:01:58.000000000 +0200 |
| 144 |
+++ kernel-source-2.6.0/include/linux/msdos_fs_sb.h 2004-02-01 13:48:46.000000000 +0100 |
| 145 |
@@ -24,5 +24,6 @@ |
| 146 |
numtail:1, /* Does first alias have a numeric '~1' type tail? */ |
| 147 |
atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */ |
| 148 |
- nocase:1; /* Does this need case conversion? 0=need case conversion*/ |
| 149 |
+ nocase:1, /* Does this need case conversion? 0=need case conversion*/ |
| 150 |
+ epoc:1; /* Filename starting with 0x00 marks end of dir? */ |
| 151 |
}; |
| 152 |
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