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Diffstat (limited to 'fs/isofs/inode.c')
-rw-r--r--fs/isofs/inode.c122
1 files changed, 73 insertions, 49 deletions
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 068b34b5a107..85f96bc651c7 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -141,13 +141,17 @@ static const struct dentry_operations isofs_dentry_ops[] = {
};
struct iso9660_options{
- char map;
- char rock;
- char joliet;
- char cruft;
- char hide;
- char showassoc;
- char nocompress;
+ unsigned int rock:1;
+ unsigned int joliet:1;
+ unsigned int cruft:1;
+ unsigned int hide:1;
+ unsigned int showassoc:1;
+ unsigned int nocompress:1;
+ unsigned int overriderockperm:1;
+ unsigned int uid_set:1;
+ unsigned int gid_set:1;
+ unsigned int utf8:1;
+ unsigned char map;
unsigned char check;
unsigned int blocksize;
mode_t fmode;
@@ -155,7 +159,6 @@ struct iso9660_options{
gid_t gid;
uid_t uid;
char *iocharset;
- unsigned char utf8;
/* LVE */
s32 session;
s32 sbsector;
@@ -312,7 +315,7 @@ enum {
Opt_block, Opt_check_r, Opt_check_s, Opt_cruft, Opt_gid, Opt_ignore,
Opt_iocharset, Opt_map_a, Opt_map_n, Opt_map_o, Opt_mode, Opt_nojoliet,
Opt_norock, Opt_sb, Opt_session, Opt_uid, Opt_unhide, Opt_utf8, Opt_err,
- Opt_nocompress, Opt_hide, Opt_showassoc, Opt_dmode,
+ Opt_nocompress, Opt_hide, Opt_showassoc, Opt_dmode, Opt_overriderockperm,
};
static const match_table_t tokens = {
@@ -340,6 +343,7 @@ static const match_table_t tokens = {
{Opt_gid, "gid=%u"},
{Opt_mode, "mode=%u"},
{Opt_dmode, "dmode=%u"},
+ {Opt_overriderockperm, "overriderockperm"},
{Opt_block, "block=%u"},
{Opt_ignore, "conv=binary"},
{Opt_ignore, "conv=b"},
@@ -359,24 +363,22 @@ static int parse_options(char *options, struct iso9660_options *popt)
int option;
popt->map = 'n';
- popt->rock = 'y';
- popt->joliet = 'y';
- popt->cruft = 'n';
- popt->hide = 'n';
- popt->showassoc = 'n';
+ popt->rock = 1;
+ popt->joliet = 1;
+ popt->cruft = 0;
+ popt->hide = 0;
+ popt->showassoc = 0;
popt->check = 'u'; /* unset */
popt->nocompress = 0;
popt->blocksize = 1024;
- popt->fmode = popt->dmode = S_IRUGO | S_IXUGO; /*
- * r-x for all. The disc could
- * be shared with DOS machines so
- * virtually anything could be
- * a valid executable.
- */
+ popt->fmode = popt->dmode = ISOFS_INVALID_MODE;
+ popt->uid_set = 0;
+ popt->gid_set = 0;
popt->gid = 0;
popt->uid = 0;
popt->iocharset = NULL;
popt->utf8 = 0;
+ popt->overriderockperm = 0;
popt->session=-1;
popt->sbsector=-1;
if (!options)
@@ -393,20 +395,20 @@ static int parse_options(char *options, struct iso9660_options *popt)
token = match_token(p, tokens, args);
switch (token) {
case Opt_norock:
- popt->rock = 'n';
+ popt->rock = 0;
break;
case Opt_nojoliet:
- popt->joliet = 'n';
+ popt->joliet = 0;
break;
case Opt_hide:
- popt->hide = 'y';
+ popt->hide = 1;
break;
case Opt_unhide:
case Opt_showassoc:
- popt->showassoc = 'y';
+ popt->showassoc = 1;
break;
case Opt_cruft:
- popt->cruft = 'y';
+ popt->cruft = 1;
break;
case Opt_utf8:
popt->utf8 = 1;
@@ -450,11 +452,13 @@ static int parse_options(char *options, struct iso9660_options *popt)
if (match_int(&args[0], &option))
return 0;
popt->uid = option;
+ popt->uid_set = 1;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
popt->gid = option;
+ popt->gid_set = 1;
break;
case Opt_mode:
if (match_int(&args[0], &option))
@@ -466,6 +470,9 @@ static int parse_options(char *options, struct iso9660_options *popt)
return 0;
popt->dmode = option;
break;
+ case Opt_overriderockperm:
+ popt->overriderockperm = 1;
+ break;
case Opt_block:
if (match_int(&args[0], &option))
return 0;
@@ -625,7 +632,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
else if (isonum_711(vdp->type) == ISO_VD_SUPPLEMENTARY) {
sec = (struct iso_supplementary_descriptor *)vdp;
if (sec->escape[0] == 0x25 && sec->escape[1] == 0x2f) {
- if (opt.joliet == 'y') {
+ if (opt.joliet) {
if (sec->escape[2] == 0x40)
joliet_level = 1;
else if (sec->escape[2] == 0x43)
@@ -650,7 +657,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
goto out_freebh;
sbi->s_high_sierra = 1;
- opt.rock = 'n';
+ opt.rock = 0;
h_pri = (struct hs_primary_descriptor *)vdp;
goto root_found;
}
@@ -673,7 +680,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
root_found:
- if (joliet_level && (pri == NULL || opt.rock == 'n')) {
+ if (joliet_level && (pri == NULL || !opt.rock)) {
/* This is the case of Joliet with the norock mount flag.
* A disc with both Joliet and Rock Ridge is handled later
*/
@@ -802,22 +809,31 @@ root_found:
s->s_op = &isofs_sops;
s->s_export_op = &isofs_export_ops;
sbi->s_mapping = opt.map;
- sbi->s_rock = (opt.rock == 'y' ? 2 : 0);
+ sbi->s_rock = (opt.rock ? 2 : 0);
sbi->s_rock_offset = -1; /* initial offset, will guess until SP is found*/
sbi->s_cruft = opt.cruft;
sbi->s_hide = opt.hide;
sbi->s_showassoc = opt.showassoc;
sbi->s_uid = opt.uid;
sbi->s_gid = opt.gid;
+ sbi->s_uid_set = opt.uid_set;
+ sbi->s_gid_set = opt.gid_set;
sbi->s_utf8 = opt.utf8;
sbi->s_nocompress = opt.nocompress;
+ sbi->s_overriderockperm = opt.overriderockperm;
/*
* It would be incredibly stupid to allow people to mark every file
* on the disk as suid, so we merely allow them to set the default
* permissions.
*/
- sbi->s_fmode = opt.fmode & 0777;
- sbi->s_dmode = opt.dmode & 0777;
+ if (opt.fmode != ISOFS_INVALID_MODE)
+ sbi->s_fmode = opt.fmode & 0777;
+ else
+ sbi->s_fmode = ISOFS_INVALID_MODE;
+ if (opt.dmode != ISOFS_INVALID_MODE)
+ sbi->s_dmode = opt.dmode & 0777;
+ else
+ sbi->s_dmode = ISOFS_INVALID_MODE;
/*
* Read the root inode, which _may_ result in changing
@@ -1095,18 +1111,6 @@ static const struct address_space_operations isofs_aops = {
.bmap = _isofs_bmap
};
-static inline void test_and_set_uid(uid_t *p, uid_t value)
-{
- if (value)
- *p = value;
-}
-
-static inline void test_and_set_gid(gid_t *p, gid_t value)
-{
- if (value)
- *p = value;
-}
-
static int isofs_read_level3_size(struct inode *inode)
{
unsigned long bufsize = ISOFS_BUFFER_SIZE(inode);
@@ -1261,7 +1265,10 @@ static int isofs_read_inode(struct inode *inode)
ei->i_file_format = isofs_file_normal;
if (de->flags[-high_sierra] & 2) {
- inode->i_mode = sbi->s_dmode | S_IFDIR;
+ if (sbi->s_dmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFDIR | sbi->s_dmode;
+ else
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
inode->i_nlink = 1; /*
* Set to 1. We know there are 2, but
* the find utility tries to optimize
@@ -1270,8 +1277,16 @@ static int isofs_read_inode(struct inode *inode)
* do it the hard way.
*/
} else {
- /* Everybody gets to read the file. */
- inode->i_mode = sbi->s_fmode | S_IFREG;
+ if (sbi->s_fmode != ISOFS_INVALID_MODE) {
+ inode->i_mode = S_IFREG | sbi->s_fmode;
+ } else {
+ /*
+ * Set default permissions: r-x for all. The disc
+ * could be shared with DOS machines so virtually
+ * anything could be a valid executable.
+ */
+ inode->i_mode = S_IFREG | S_IRUGO | S_IXUGO;
+ }
inode->i_nlink = 1;
}
inode->i_uid = sbi->s_uid;
@@ -1300,7 +1315,7 @@ static int isofs_read_inode(struct inode *inode)
* this CDROM was mounted with the cruft option.
*/
- if (sbi->s_cruft == 'y')
+ if (sbi->s_cruft)
inode->i_size &= 0x00ffffff;
if (de->interleave[0]) {
@@ -1346,9 +1361,18 @@ static int isofs_read_inode(struct inode *inode)
if (!high_sierra) {
parse_rock_ridge_inode(de, inode);
/* if we want uid/gid set, override the rock ridge setting */
- test_and_set_uid(&inode->i_uid, sbi->s_uid);
- test_and_set_gid(&inode->i_gid, sbi->s_gid);
+ if (sbi->s_uid_set)
+ inode->i_uid = sbi->s_uid;
+ if (sbi->s_gid_set)
+ inode->i_gid = sbi->s_gid;
}
+ /* Now set final access rights if overriding rock ridge setting */
+ if (S_ISDIR(inode->i_mode) && sbi->s_overriderockperm &&
+ sbi->s_dmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFDIR | sbi->s_dmode;
+ if (S_ISREG(inode->i_mode) && sbi->s_overriderockperm &&
+ sbi->s_fmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFREG | sbi->s_fmode;
/* Install the inode operations vector */
if (S_ISREG(inode->i_mode)) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.