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CRED: Separate task security context from task_struct
Separate the task security context from task_struct. At this point, the security data is temporarily embedded in the task_struct with two pointers pointing to it. Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in entry.S via asm-offsets. With comment fixes Signed-off-by: Marc Dionne <[email protected]> Signed-off-by: David Howells <[email protected]> Acked-by: James Morris <[email protected]> Acked-by: Serge Hallyn <[email protected]> Signed-off-by: James Morris <[email protected]>
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63 changed files with 832 additions and 677 deletions
10
mm/migrate.c
10
mm/migrate.c
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@ -1045,10 +1045,10 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
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const int __user *nodes,
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int __user *status, int flags)
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{
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struct cred *cred, *tcred;
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struct task_struct *task;
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struct mm_struct *mm;
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int err;
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uid_t uid, euid;
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/* Check flags */
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if (flags & ~(MPOL_MF_MOVE|MPOL_MF_MOVE_ALL))
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@ -1076,10 +1076,10 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
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* capabilities, superuser privileges or the same
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* userid as the target process.
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*/
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uid = current_uid();
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euid = current_euid();
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if (euid != task->suid && euid != task->uid &&
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uid != task->suid && uid != task->uid &&
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cred = current->cred;
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tcred = task->cred;
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if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
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cred->uid != tcred->suid && cred->uid != tcred->uid &&
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!capable(CAP_SYS_NICE)) {
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err = -EPERM;
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goto out;
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