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[PATCH] refactor capable() to one implementation, add __capable() helper

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Move capable() to kernel/capability.c and eliminate duplicate
implementations.  Add __capable() function which can be used to check for
capabiilty of any process.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Wright 2006-03-25 03:07:41 -08:00 • committed by Linus Torvalds
parent 77d47582c2
commit 12b5989be1
5 changed files with 34 additions and 42 deletions
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22
include/linux/security.h
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@ -1040,6 +1040,11 @@ struct swap_info_struct;
* @effective contains the effective capability set.
* @inheritable contains the inheritable capability set.
* @permitted contains the permitted capability set.
* @capable:
* Check whether the @tsk process has the @cap capability.
* @tsk contains the task_struct for the process.
* @cap contains the capability <include/linux/capability.h>.
* Return 0 if the capability is granted for @tsk.
* @acct:
* Check permission before enabling or disabling process accounting. If
* accounting is being enabled, then @file refers to the open file used to
@ -1053,11 +1058,6 @@ struct swap_info_struct;
* @table contains the ctl_table structure for the sysctl variable.
* @op contains the operation (001 = search, 002 = write, 004 = read).
* Return 0 if permission is granted.
* @capable:
* Check whether the @tsk process has the @cap capability.
* @tsk contains the task_struct for the process.
* @cap contains the capability <include/linux/capability.h>.
* Return 0 if the capability is granted for @tsk.
* @syslog:
* Check permission before accessing the kernel message ring or changing
* logging to the console.
@ -1099,9 +1099,9 @@ struct security_operations {
kernel_cap_t * effective,
kernel_cap_t * inheritable,
kernel_cap_t * permitted);
int (*capable) (struct task_struct * tsk, int cap);
int (*acct) (struct file * file);
int (*sysctl) (struct ctl_table * table, int op);
int (*capable) (struct task_struct * tsk, int cap);
int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
int (*quota_on) (struct dentry * dentry);
int (*syslog) (int type);
@ -1347,6 +1347,11 @@ static inline void security_capset_set (struct task_struct *target,
security_ops->capset_set (target, effective, inheritable, permitted);
}
static inline int security_capable(struct task_struct *tsk, int cap)
{
return security_ops->capable(tsk, cap);
}
static inline int security_acct (struct file *file)
{
return security_ops->acct (file);
@ -2050,6 +2055,11 @@ static inline void security_capset_set (struct task_struct *target,
cap_capset_set (target, effective, inheritable, permitted);
}
static inline int security_capable(struct task_struct *tsk, int cap)
{
return cap_capable(tsk, cap);
}
static inline int security_acct (struct file *file)
{
return 0;