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Commit 4aee9bf7 authored by Hirofumi Ogawa's avatar Hirofumi Ogawa Committed by Linus Torvalds
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[PATCH] merges parse_options() of fat and parse_options() of vfat (2/5) 

This merges parse_options() of fat and parse_options() of vfat.
And this doesn't recognize the unknown options.
parent ac465e61
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Showing with 111 additions and 141 deletions
fs/fat/inode.c
View file @ 4aee9bf7
......@@ -201,38 +201,54 @@ void fat_put_super(struct super_block *sb)
kfree(sbi);
}
static int simple_getbool(char *s, int *setval)
{
if (s) {
if (!strcmp(s,"1") || !strcmp(s,"yes") || !strcmp(s,"true"))
*setval = 1;
else if (!strcmp(s,"0") || !strcmp(s,"no") || !strcmp(s,"false"))
*setval = 0;
else
return 0;
} else
*setval = 1;
return 1;
}
static int parse_options(char *options, int *debug,
static int parse_options(char *options, int is_vfat, int *debug,
struct fat_mount_options *opts,
char *cvf_format, char *cvf_options)
{
char *this_char,*value,save,*savep;
char *p;
int ret = 1, len;
char *this_char, *value, *p;
int ret = 1, val, len;
opts->isvfat = is_vfat;
opts->name_check = 'n';
opts->conversion = 'b';
opts->fs_uid = current->uid;
opts->fs_gid = current->gid;
opts->fs_umask = current->fs->umask;
opts->quiet = opts->sys_immutable = opts->dotsOK = opts->showexec = 0;
opts->codepage = 0;
opts->nocase = 0;
opts->shortname = 0;
opts->utf8 = 0;
opts->iocharset = NULL;
if (is_vfat)
opts->shortname = VFAT_SFN_DISPLAY_LOWER|VFAT_SFN_CREATE_WIN95;
else
opts->shortname = 0;
opts->name_check = 'n';
opts->conversion = 'b';
opts->quiet = opts->showexec = opts->sys_immutable = opts->dotsOK = 0;
opts->utf8 = opts->unicode_xlate = opts->posixfs = 0;
opts->numtail = 1;
opts->nocase = 0;
*debug = 0;
if (!options)
goto out;
save = 0;
savep = NULL;
while ((this_char = strsep(&options,",")) != NULL) {
if ((value = strchr(this_char,'=')) != NULL) {
save = *value;
savep = value;
if (!*this_char)
continue;
if ((value = strchr(this_char,'=')) != NULL)
*value++ = 0;
}
if (!strcmp(this_char,"check") && value) {
if (value[0] && !value[1] && strchr("rns",*value))
opts->name_check = *value;
......@@ -255,23 +271,18 @@ static int parse_options(char *options, int *debug,
opts->conversion = 'a';
else ret = 0;
}
else if (!strcmp(this_char,"dots")) {
opts->dotsOK = 1;
}
else if (!strcmp(this_char,"nocase")) {
opts->nocase = 1;
}
else if (!strcmp(this_char,"nodots")) {
opts->dotsOK = 0;
if (!is_vfat)
opts->nocase = 1;
else {
/* for backward compatible */
opts->shortname = VFAT_SFN_DISPLAY_WIN95
| VFAT_SFN_CREATE_WIN95;
}
}
else if (!strcmp(this_char,"showexec")) {
opts->showexec = 1;
}
else if (!strcmp(this_char,"dotsOK") && value) {
if (!strcmp(value,"yes")) opts->dotsOK = 1;
else if (!strcmp(value,"no")) opts->dotsOK = 0;
else ret = 0;
}
else if (!strcmp(this_char,"uid")) {
if (!value || !*value) ret = 0;
else {
......@@ -317,7 +328,32 @@ static int parse_options(char *options, int *debug,
opts->codepage = simple_strtoul(value,&value,0);
if (*value) ret = 0;
}
else if (!strcmp(this_char,"iocharset") && value) {
else if (!strcmp(this_char,"cvf_format")) {
if (!value)
return 0;
strncpy(cvf_format,value,20);
}
else if (!strcmp(this_char,"cvf_options")) {
if (!value)
return 0;
strncpy(cvf_options,value,100);
}
/* msdos specific */
else if (!is_vfat && !strcmp(this_char,"dots")) {
opts->dotsOK = 1;
}
else if (!is_vfat && !strcmp(this_char,"nodots")) {
opts->dotsOK = 0;
}
else if (!is_vfat && !strcmp(this_char,"dotsOK") && value) {
if (!strcmp(value,"yes")) opts->dotsOK = 1;
else if (!strcmp(value,"no")) opts->dotsOK = 0;
else ret = 0;
}
/* vfat specific */
else if (is_vfat && !strcmp(this_char,"iocharset") && value) {
p = value;
while (*value && *value != ',')
value++;
......@@ -338,23 +374,54 @@ static int parse_options(char *options, int *debug,
ret = 0;
}
}
else if (!strcmp(this_char,"cvf_format")) {
if (!value)
return 0;
strncpy(cvf_format,value,20);
else if (is_vfat && !strcmp(this_char,"utf8")) {
ret = simple_getbool(value, &val);
if (ret) opts->utf8 = val;
}
else if (!strcmp(this_char,"cvf_options")) {
if (!value)
return 0;
strncpy(cvf_options,value,100);
else if (is_vfat && !strcmp(this_char,"uni_xlate")) {
ret = simple_getbool(value, &val);
if (ret) opts->unicode_xlate = val;
}
else if (is_vfat && !strcmp(this_char,"posix")) {
ret = simple_getbool(value, &val);
if (ret) opts->posixfs = val;
}
else if (is_vfat && !strcmp(this_char,"nonumtail")) {
ret = simple_getbool(value, &val);
if (ret) {
opts->numtail = !val;
}
}
else if (is_vfat && !strcmp(this_char, "shortname")) {
if (!strcmp(value, "lower"))
opts->shortname = VFAT_SFN_DISPLAY_LOWER
| VFAT_SFN_CREATE_WIN95;
else if (!strcmp(value, "win95"))
opts->shortname = VFAT_SFN_DISPLAY_WIN95
| VFAT_SFN_CREATE_WIN95;
else if (!strcmp(value, "winnt"))
opts->shortname = VFAT_SFN_DISPLAY_WINNT
| VFAT_SFN_CREATE_WINNT;
else if (!strcmp(value, "mixed"))
opts->shortname = VFAT_SFN_DISPLAY_WINNT
| VFAT_SFN_CREATE_WIN95;
else
ret = 0;
} else {
printk("FAT: Unrecognized mount option %s\n",
this_char);
ret = 0;
}
if (options) *(options-1) = ',';
if (value) *savep = save;
if (ret == 0)
break;
}
out:
if (opts->posixfs)
opts->name_check = 's';
if (opts->unicode_xlate)
opts->utf8 = 0;
return ret;
}
......@@ -658,12 +725,11 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,
sb->s_magic = MSDOS_SUPER_MAGIC;
sb->s_op = &fat_sops;
sb->s_export_op = &fat_export_ops;
sbi->options.isvfat = isvfat;
sbi->dir_ops = fs_dir_inode_ops;
sbi->cvf_format = &default_cvf;
error = -EINVAL;
if (!parse_options((char *)data, &debug, &sbi->options,
if (!parse_options((char *)data, isvfat, &debug, &sbi->options,
cvf_format, cvf_options))
goto out_fail;
......
fs/vfat/namei.c
View file @ 4aee9bf7
......@@ -80,93 +80,6 @@ static int vfat_revalidate(struct dentry *dentry, int flags)
return 0;
}
static int simple_getbool(char *s, int *setval)
{
if (s) {
if (!strcmp(s,"1") || !strcmp(s,"yes") || !strcmp(s,"true")) {
*setval = 1;
} else if (!strcmp(s,"0") || !strcmp(s,"no") || !strcmp(s,"false")) {
*setval = 0;
} else {
return 0;
}
} else {
*setval = 1;
}
return 1;
}
static int parse_options(char *options, struct fat_mount_options *opts)
{
char *this_char,*value,save,*savep;
int ret, val;
opts->unicode_xlate = opts->posixfs = 0;
opts->numtail = 1;
opts->utf8 = 0;
opts->shortname = VFAT_SFN_DISPLAY_LOWER | VFAT_SFN_CREATE_WIN95;
/* for backward compatible */
if (opts->nocase) {
opts->nocase = 0;
opts->shortname = VFAT_SFN_DISPLAY_WIN95
| VFAT_SFN_CREATE_WIN95;
}
if (!options) return 1;
save = 0;
savep = NULL;
ret = 1;
while ((this_char = strsep(&options,",")) != NULL) {
if ((value = strchr(this_char,'=')) != NULL) {
save = *value;
savep = value;
*value++ = 0;
}
if (!strcmp(this_char,"utf8")) {
ret = simple_getbool(value, &val);
if (ret) opts->utf8 = val;
} else if (!strcmp(this_char,"uni_xlate")) {
ret = simple_getbool(value, &val);
if (ret) opts->unicode_xlate = val;
} else if (!strcmp(this_char,"posix")) {
ret = simple_getbool(value, &val);
if (ret) opts->posixfs = val;
} else if (!strcmp(this_char,"nonumtail")) {
ret = simple_getbool(value, &val);
if (ret) {
opts->numtail = !val;
}
} else if (!strcmp(this_char, "shortname")) {
if (!strcmp(value, "lower"))
opts->shortname = VFAT_SFN_DISPLAY_LOWER
| VFAT_SFN_CREATE_WIN95;
else if (!strcmp(value, "win95"))
opts->shortname = VFAT_SFN_DISPLAY_WIN95
| VFAT_SFN_CREATE_WIN95;
else if (!strcmp(value, "winnt"))
opts->shortname = VFAT_SFN_DISPLAY_WINNT
| VFAT_SFN_CREATE_WINNT;
else if (!strcmp(value, "mixed"))
opts->shortname = VFAT_SFN_DISPLAY_WINNT
| VFAT_SFN_CREATE_WIN95;
else
ret = 0;
}
if (options)
*(options-1) = ',';
if (value) {
*savep = save;
}
if (ret == 0) {
return 0;
}
}
if (opts->unicode_xlate) {
opts->utf8 = 0;
}
return 1;
}
static inline unsigned char
vfat_tolower(struct nls_table *t, unsigned char c)
{
......@@ -1281,24 +1194,15 @@ struct inode_operations vfat_dir_inode_operations = {
int vfat_fill_super(struct super_block *sb, void *data, int silent)
{
int res;
struct msdos_sb_info *sbi;
res = fat_fill_super(sb, data, silent, &vfat_dir_inode_operations, 1);
if (res)
return res;
sbi = MSDOS_SB(sb);
if (parse_options((char *) data, &(sbi->options))) {
sbi->options.dotsOK = 0;
if (sbi->options.posixfs) {
sbi->options.name_check = 's';
}
}
if (sbi->options.name_check != 's') {
if (MSDOS_SB(sb)->options.name_check != 's')
sb->s_root->d_op = &vfat_dentry_ops[0];
} else {
else
sb->s_root->d_op = &vfat_dentry_ops[2];
}
return 0;
}
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