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security: pass mount flags to security_sb_kern_mount()

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Pass mount flags to security_sb_kern_mount(), so security modules
can determine if a mount operation is being performed by the kernel.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
This commit is contained in:
James Morris 2008-12-19 10:44:42 +11:00
parent 459c19f524
commit 12204e24b1
6 changed files with 10 additions and 9 deletions
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2
fs/super.c
View file

@ -914,7 +914,7 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
goto out_free_secdata;
BUG_ON(!mnt->mnt_sb);
error = security_sb_kern_mount(mnt->mnt_sb, secdata);
error = security_sb_kern_mount(mnt->mnt_sb, flags, secdata);
if (error)
goto out_sb;

6
include/linux/security.h
View file

@ -1308,7 +1308,7 @@ struct security_operations {
int (*sb_alloc_security) (struct super_block *sb);
void (*sb_free_security) (struct super_block *sb);
int (*sb_copy_data) (char *orig, char *copy);
int (*sb_kern_mount) (struct super_block *sb, void *data);
int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
int (*sb_statfs) (struct dentry *dentry);
int (*sb_mount) (char *dev_name, struct path *path,
@ -1575,7 +1575,7 @@ int security_bprm_secureexec(struct linux_binprm *bprm);
int security_sb_alloc(struct super_block *sb);
void security_sb_free(struct super_block *sb);
int security_sb_copy_data(char *orig, char *copy);
int security_sb_kern_mount(struct super_block *sb, void *data);
int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
int security_sb_show_options(struct seq_file *m, struct super_block *sb);
int security_sb_statfs(struct dentry *dentry);
int security_sb_mount(char *dev_name, struct path *path,
@ -1850,7 +1850,7 @@ static inline int security_sb_copy_data(char *orig, char *copy)
return 0;
}
static inline int security_sb_kern_mount(struct super_block *sb, void *data)
static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
return 0;
}

2
security/capability.c
View file

@ -59,7 +59,7 @@ static int cap_sb_copy_data(char *orig, char *copy)
return 0;
}
static int cap_sb_kern_mount(struct super_block *sb, void *data)
static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
return 0;
}

4
security/security.c
View file

@ -254,9 +254,9 @@ int security_sb_copy_data(char *orig, char *copy)
}
EXPORT_SYMBOL(security_sb_copy_data);
int security_sb_kern_mount(struct super_block *sb, void *data)
int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
return security_ops->sb_kern_mount(sb, data);
return security_ops->sb_kern_mount(sb, flags, data);
}
int security_sb_show_options(struct seq_file *m, struct super_block *sb)

2
security/selinux/hooks.c
View file

@ -2474,7 +2474,7 @@ out:
return rc;
}
static int selinux_sb_kern_mount(struct super_block *sb, void *data)
static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
const struct cred *cred = current_cred();
struct avc_audit_data ad;

3
security/smack/smack_lsm.c
View file

@ -250,11 +250,12 @@ static int smack_sb_copy_data(char *orig, char *smackopts)
/**
* smack_sb_kern_mount - Smack specific mount processing
* @sb: the file system superblock
* @flags: the mount flags
* @data: the smack mount options
*
* Returns 0 on success, an error code on failure
*/
static int smack_sb_kern_mount(struct super_block *sb, void *data)
static int smack_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
struct dentry *root = sb->s_root;
struct inode *inode = root->d_inode;