/[public]/fat-epoc/trunk/fat-epoc-2.6.19.diff
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Diff of /fat-epoc/trunk/fat-epoc-2.6.19.diff

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Revision 303 Revision 309
1diff -up -r linux-2.6.19.org/fs/fat/dir.c linux-2.6.19/fs/fat/dir.c 1diff -r -u2 -p linux-2.6.19.vanilla/fs/fat/dir.c linux-2.6.19/fs/fat/dir.c
2--- linux-2.6.19.org/fs/fat/dir.c 2007-09-29 15:27:28.000000000 +0200 2--- linux-2.6.19.vanilla/fs/fat/dir.c 2007-11-09 11:31:48.000000000 +0100
3+++ linux-2.6.19/fs/fat/dir.c 2007-09-29 15:28:16.000000000 +0200 3+++ linux-2.6.19/fs/fat/dir.c 2007-11-09 11:37:58.000000000 +0100
4@@ -241,6 +241,7 @@ static int fat_parse_long(struct inode * 4@@ -242,4 +242,5 @@ static int fat_parse_long(struct inode *
5 {
6 struct msdos_dir_slot *ds; 5 struct msdos_dir_slot *ds;
7 unsigned char id, slot, slots, alias_checksum; 6 unsigned char id, slot, slots, alias_checksum;
8+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc; 7+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc;
9 8
10 if (!*unicode) { 9 if (!*unicode) {
11 *unicode = (wchar_t *)__get_free_page(GFP_KERNEL);
12@@ -287,6 +288,8 @@ parse_long: 10@@ -288,4 +289,8 @@ parse_long:
13 }
14 if ((*de)->name[0] == DELETED_FLAG) 11 if ((*de)->name[0] == DELETED_FLAG)
15 return PARSE_INVALID; 12 return PARSE_INVALID;
16+ if (epoc && ((*de)->name[0] == EOD_FLAG)) 13+ if (epoc && ((*de)->name[0] == EOD_FLAG)) {
14+ while (fat_get_entry(dir, pos, bh, de) >= 0);
17+ return PARSE_EOF; 15+ return PARSE_EOF;
16+ }
18 if ((*de)->attr == ATTR_EXT) 17 if ((*de)->attr == ATTR_EXT)
19 goto parse_long; 18 goto parse_long;
20 if (IS_FREE((*de)->name) || ((*de)->attr & ATTR_VOLUME))
21@@ -320,6 +323,7 @@ int fat_search_long(struct inode *inode, 19@@ -321,4 +326,5 @@ int fat_search_long(struct inode *inode,
22 unsigned short opt_shortname = sbi->options.shortname;
23 loff_t cpos = 0; 20 loff_t cpos = 0;
24 int chl, i, j, last_u, err; 21 int chl, i, j, last_u, err;
25+ int epoc = sbi->options.epoc; 22+ int epoc = sbi->options.epoc;
26 23
27 err = -ENOENT; 24 err = -ENOENT;
28 while(1) {
29@@ -329,6 +333,9 @@ parse_record: 25@@ -330,4 +336,8 @@ parse_record:
30 nr_slots = 0;
31 if (de->name[0] == DELETED_FLAG) 26 if (de->name[0] == DELETED_FLAG)
32 continue; 27 continue;
33+ if (epoc && (de->name[0] == EOD_FLAG)) 28+ if (epoc && (de->name[0] == EOD_FLAG)) {
29+ while (fat_get_entry(inode, &cpos, &bh, &de) >= 0);
34+ goto EODir; 30+ goto EODir;
35+ 31+ }
36 if (de->attr != ATTR_EXT && (de->attr & ATTR_VOLUME)) 32 if (de->attr != ATTR_EXT && (de->attr & ATTR_VOLUME))
37 continue; 33 continue;
38 if (de->attr != ATTR_EXT && IS_FREE(de->name))
39@@ -456,6 +463,8 @@ static int __fat_readdir(struct inode *i 34@@ -457,4 +467,6 @@ static int __fat_readdir(struct inode *i
40 int chi, chl, i, i2, j, last, last_u, dotoffset = 0;
41 loff_t cpos; 35 loff_t cpos;
42 int ret = 0; 36 int ret = 0;
43+ int epoc = MSDOS_SB(sb)->options.epoc; 37+ int epoc = MSDOS_SB(sb)->options.epoc;
44+ 38+
45 39
46 lock_kernel(); 40 lock_kernel();
47 41@@ -487,4 +499,8 @@ parse_record:
48@@ -486,6 +495,8 @@ GetNew:
49 parse_record:
50 long_slots = 0; 42 long_slots = 0;
51 /* Check for long filename entry */ 43 /* Check for long filename entry */
52+ if (epoc && (de->name[0] == EOD_FLAG)) 44+ if (epoc && (de->name[0] == EOD_FLAG)) {
45+ while (fat_get_entry(inode, &cpos, &bh, &de) >= 0);
53+ goto EODir; 46+ goto EODir;
47+ }
54 if (isvfat) { 48 if (isvfat) {
55 if (de->name[0] == DELETED_FLAG) 49 if (de->name[0] == DELETED_FLAG)
56 goto RecEnd;
57@@ -808,7 +819,10 @@ static int fat_get_short_entry(struct in 50@@ -809,5 +825,10 @@ static int fat_get_short_entry(struct in
58 struct buffer_head **bh,
59 struct msdos_dir_entry **de) 51 struct msdos_dir_entry **de)
60 { 52 {
61+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc; 53+ int epoc = MSDOS_SB(dir->i_sb)->options.epoc;
62 while (fat_get_entry(dir, pos, bh, de) >= 0) { 54 while (fat_get_entry(dir, pos, bh, de) >= 0) {
63+ if (epoc && ((*de)->name[0] == EOD_FLAG)) 55+ if (epoc && ((*de)->name[0] == EOD_FLAG)) {
56+ while (fat_get_entry(dir, pos, bh, de) >= 0);
64+ return -ENOENT; 57+ return -ENOENT;
58+ }
65 /* free entry or long name entry or volume label */ 59 /* free entry or long name entry or volume label */
66 if (!IS_FREE((*de)->name) && !((*de)->attr & ATTR_VOLUME)) 60 if (!IS_FREE((*de)->name) && !((*de)->attr & ATTR_VOLUME))
67 return 0;
68@@ -1186,6 +1200,25 @@ error: 61@@ -1187,4 +1208,23 @@ error:
69 return err;
70 } 62 }
71 63
72+int fat_write_zero_entry(struct inode *dir, loff_t curr) 64+int fat_write_zero_entry(struct inode *dir, loff_t curr)
73+{ 65+{
74+ struct msdos_dir_entry *de = NULL; 66+ struct msdos_dir_entry *de = NULL;
… …
88+ return err; 80+ return err;
89+} 81+}
90+ 82+
91 int fat_add_entries(struct inode *dir, void *slots, int nr_slots, 83 int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
92 struct fat_slot_info *sinfo) 84 struct fat_slot_info *sinfo)
93 {
94@@ -1195,6 +1228,8 @@ int fat_add_entries(struct inode *dir, v 85@@ -1196,4 +1236,6 @@ int fat_add_entries(struct inode *dir, v
95 struct msdos_dir_entry *de;
96 int err, free_slots, i, nr_bhs; 86 int err, free_slots, i, nr_bhs;
97 loff_t pos, i_pos; 87 loff_t pos, i_pos;
98+ int epoc = sbi->options.epoc; 88+ int epoc = sbi->options.epoc;
99+ int last_entry = 0; 89+ int last_entry = 0;
100 90
101 sinfo->nr_slots = nr_slots; 91 sinfo->nr_slots = nr_slots;
102
103@@ -1208,7 +1243,9 @@ int fat_add_entries(struct inode *dir, v 92@@ -1209,5 +1251,7 @@ int fat_add_entries(struct inode *dir, v
104 if (pos >= FAT_MAX_DIR_SIZE)
105 goto error; 93 goto error;
106 94
107- if (IS_FREE(de->name)) { 95- if (IS_FREE(de->name)) {
108+ if (epoc && (de->name[0] == EOD_FLAG)) 96+ if (epoc && (de->name[0] == EOD_FLAG))
109+ last_entry = 1; 97+ last_entry = 1;
110+ if (last_entry || IS_FREE(de->name)) { 98+ if (last_entry || IS_FREE(de->name)) {
111 if (prev != bh) { 99 if (prev != bh) {
112 get_bh(bh); 100 get_bh(bh);
113 bhs[nr_bhs] = prev = bh;
114@@ -1238,6 +1275,17 @@ found: 101@@ -1239,4 +1283,15 @@ found:
115 err = 0;
116 pos -= free_slots * sizeof(*de); 102 pos -= free_slots * sizeof(*de);
117 nr_slots -= free_slots; 103 nr_slots -= free_slots;
118+ 104+
119+ /* We need to write an end-of-directory slot. And we do it first, 105+ /* We need to write an end-of-directory slot. And we do it first,
120+ * because we want to keep the directory in a readble state. 106+ * because we want to keep the directory in a readble state.
… …
126+ if (err) 112+ if (err)
127+ goto error; 113+ goto error;
128+ 114+
129 if (free_slots) { 115 if (free_slots) {
130 /* 116 /*
131 * Second stage: filling the free entries with new entries.
132diff -up -r linux-2.6.19.org/fs/fat/inode.c linux-2.6.19/fs/fat/inode.c 117diff -r -u2 -p linux-2.6.19.vanilla/fs/fat/inode.c linux-2.6.19/fs/fat/inode.c
133--- linux-2.6.19.org/fs/fat/inode.c 2007-09-29 15:27:28.000000000 +0200 118--- linux-2.6.19.vanilla/fs/fat/inode.c 2007-11-09 11:31:48.000000000 +0100
134+++ linux-2.6.19/fs/fat/inode.c 2007-09-29 15:29:36.000000000 +0200 119+++ linux-2.6.19/fs/fat/inode.c 2007-11-09 11:37:58.000000000 +0100
135@@ -854,6 +854,7 @@ enum { 120@@ -855,4 +855,5 @@ enum {
136 Opt_charset, Opt_shortname_lower, Opt_shortname_win95,
137 Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes, 121 Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes,
138 Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, 122 Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes,
139+ Opt_epoc, 123+ Opt_epoc,
140 Opt_obsolate, Opt_flush, Opt_err, 124 Opt_obsolate, Opt_flush, Opt_err,
141 }; 125 };
142
143@@ -875,6 +876,7 @@ static match_table_t fat_tokens = { 126@@ -876,4 +877,5 @@ static match_table_t fat_tokens = {
144 {Opt_showexec, "showexec"},
145 {Opt_debug, "debug"}, 127 {Opt_debug, "debug"},
146 {Opt_immutable, "sys_immutable"}, 128 {Opt_immutable, "sys_immutable"},
147+ {Opt_epoc, "epoc"}, 129+ {Opt_epoc, "epoc"},
148 {Opt_obsolate, "conv=binary"}, 130 {Opt_obsolate, "conv=binary"},
149 {Opt_obsolate, "conv=text"}, 131 {Opt_obsolate, "conv=text"},
150 {Opt_obsolate, "conv=auto"},
151@@ -1031,6 +1033,10 @@ static int parse_options(char *options, 132@@ -1032,4 +1034,8 @@ static int parse_options(char *options,
152 case Opt_flush:
153 opts->flush = 1; 133 opts->flush = 1;
154 break; 134 break;
155+ case Opt_epoc: 135+ case Opt_epoc:
156+ opts->epoc = 1; 136+ opts->epoc = 1;
157+ break; 137+ break;
158+ 138+
159 139
160 /* msdos specific */ 140 /* msdos specific */
161 case Opt_dots:
162diff -up -r linux-2.6.19.org/include/linux/msdos_fs.h linux-2.6.19/include/linux/msdos_fs.h 141diff -r -u2 -p linux-2.6.19.vanilla/include/linux/msdos_fs.h linux-2.6.19/include/linux/msdos_fs.h
163--- linux-2.6.19.org/include/linux/msdos_fs.h 2007-09-29 15:27:43.000000000 +0200 142--- linux-2.6.19.vanilla/include/linux/msdos_fs.h 2007-11-09 11:32:00.000000000 +0100
164+++ linux-2.6.19/include/linux/msdos_fs.h 2007-09-29 15:31:01.000000000 +0200 143+++ linux-2.6.19/include/linux/msdos_fs.h 2007-11-09 11:39:36.000000000 +0100
165@@ -44,6 +44,7 @@ 144@@ -45,4 +45,5 @@
166 #define CASE_LOWER_EXT 16 /* extension is lower case */
167 145
168 #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */ 146 #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */
169+#define EOD_FLAG 0x00 /* marks end of directory when in name[0] for old fats */ 147+#define EOD_FLAG 0x00 /* marks end of directory when in name[0] for old fats */
170 #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG) 148 #define IS_FREE(n) (!*(n) || *(n) == DELETED_FLAG)
171 149
172 /* valid file mode bits */
173@@ -206,6 +207,7 @@ struct fat_mount_options { 150@@ -206,5 +207,6 @@ struct fat_mount_options {
174 atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */ 151 atari:1, /* Use Atari GEMDOS variation of MS-DOS fs */
175 flush:1, /* write things quickly */ 152 flush:1, /* write things quickly */
176 nocase:1; /* Does this need case conversion? 0=need case conversion*/ 153- nocase:1; /* Does this need case conversion? 0=need case conversion*/
154+ nocase:1, /* Does this need case conversion? 0=need case conversion*/
177+ epoc:1; /* Filename starting with 0x00 marks end of dir? */ 155+ epoc:1; /* Filename starting with 0x00 marks end of dir? */
178 }; 156 };
179 157
180 #define FAT_HASH_BITS 8
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