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Diffstat (limited to 'ipc/compat.c')
-rw-r--r--ipc/compat.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/ipc/compat.c b/ipc/compat.c
index a6df704f521e..ad9518eb26e0 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -118,7 +118,7 @@ extern int sem_ctls[];
118 118
119static inline int compat_ipc_parse_version(int *cmd) 119static inline int compat_ipc_parse_version(int *cmd)
120{ 120{
121#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC 121#ifdef CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION
122 int version = *cmd & IPC_64; 122 int version = *cmd & IPC_64;
123 123
124 /* this is tricky: architectures that have support for the old 124 /* this is tricky: architectures that have support for the old
@@ -373,21 +373,21 @@ long compat_sys_semctl(int semid, int semnum, int cmd, int arg)
373} 373}
374 374
375long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp, 375long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
376 size_t msgsz, int msgflg) 376 compat_ssize_t msgsz, int msgflg)
377{ 377{
378 compat_long_t mtype; 378 compat_long_t mtype;
379 379
380 if (get_user(mtype, &msgp->mtype)) 380 if (get_user(mtype, &msgp->mtype))
381 return -EFAULT; 381 return -EFAULT;
382 return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg); 382 return do_msgsnd(msqid, mtype, msgp->mtext, (ssize_t)msgsz, msgflg);
383} 383}
384 384
385long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp, 385long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp,
386 size_t msgsz, long msgtyp, int msgflg) 386 compat_ssize_t msgsz, long msgtyp, int msgflg)
387{ 387{
388 long err, mtype; 388 long err, mtype;
389 389
390 err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg); 390 err = do_msgrcv(msqid, &mtype, msgp->mtext, (ssize_t)msgsz, msgtyp, msgflg);
391 if (err < 0) 391 if (err < 0)
392 goto out; 392 goto out;
393 393
@@ -514,6 +514,10 @@ long compat_sys_msgctl(int first, int second, void __user *uptr)
514 return err; 514 return err;
515} 515}
516 516
517#ifndef COMPAT_SHMLBA
518#define COMPAT_SHMLBA SHMLBA
519#endif
520
517#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC 521#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
518long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, 522long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
519 void __user *uptr) 523 void __user *uptr)
@@ -524,7 +528,7 @@ long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
524 528
525 if (version == 1) 529 if (version == 1)
526 return -EINVAL; 530 return -EINVAL;
527 err = do_shmat(first, uptr, second, &raddr); 531 err = do_shmat(first, uptr, second, &raddr, COMPAT_SHMLBA);
528 if (err < 0) 532 if (err < 0)
529 return err; 533 return err;
530 uaddr = compat_ptr(third); 534 uaddr = compat_ptr(third);
@@ -536,7 +540,7 @@ long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg)
536 unsigned long ret; 540 unsigned long ret;
537 long err; 541 long err;
538 542
539 err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret); 543 err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA);
540 if (err) 544 if (err)
541 return err; 545 return err;
542 force_successful_syscall_return(); 546 force_successful_syscall_return();