X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=ipc%2Fshm.c;h=a9e09ad2263e36e611c8e7599e34115cfb467b92;hb=f1f055f1036a20742608c28ee82139f572dfd031;hp=b125b560240ec1ceb204f5ed0ff6f63ba97081d8;hpb=db30c70575822cc84d87b5613c19cac24734b99f;p=linux-2.6-omap-h63xx.git

diff --git a/ipc/shm.c b/ipc/shm.c
index b125b560240..a9e09ad2263 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -440,7 +440,7 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp,
 	return 0;
 }
 
-asmlinkage long sys_shmget (key_t key, size_t size, int shmflg)
+SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg)
 {
 	struct ipc_namespace *ns;
 	struct ipc_ops shm_ops;
@@ -621,7 +621,7 @@ out_up:
 	return err;
 }
 
-asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
+SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)
 {
 	struct shmid_kernel *shp;
 	int err, version;
@@ -939,7 +939,7 @@ out_put_dentry:
 	goto out_nattch;
 }
 
-asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg)
+SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg)
 {
 	unsigned long ret;
 	long err;
@@ -955,7 +955,7 @@ asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg)
  * detach and kill segment if marked destroyed.
  * The work is done in shm_close.
  */
-asmlinkage long sys_shmdt(char __user *shmaddr)
+SYSCALL_DEFINE1(shmdt, char __user *, shmaddr)
 {
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma, *next;
@@ -990,6 +990,7 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
 	 */
 	vma = find_vma(mm, addr);
 
+#ifdef CONFIG_MMU
 	while (vma) {
 		next = vma->vm_next;
 
@@ -1034,6 +1035,17 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
 		vma = next;
 	}
 
+#else /* CONFIG_MMU */
+	/* under NOMMU conditions, the exact address to be destroyed must be
+	 * given */
+	retval = -EINVAL;
+	if (vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) {
+		do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);
+		retval = 0;
+	}
+
+#endif
+
 	up_write(&mm->mmap_sem);
 	return retval;
 }