summaryrefslogtreecommitdiffstats
path: root/include/linux/compat.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/compat.h')
-rw-r--r--include/linux/compat.h86
1 files changed, 52 insertions, 34 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 3f448c65511b..e6494261eaff 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -14,6 +14,7 @@
#include <linux/if.h>
#include <linux/fs.h>
#include <linux/aio_abi.h> /* for aio_context_t */
+#include <linux/unistd.h>
#include <asm/compat.h>
#include <asm/siginfo.h>
@@ -27,6 +28,9 @@
#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
#endif
+#define COMPAT_SYSCALL_DEFINE0(name) \
+ asmlinkage long compat_sys_##name(void)
+
#define COMPAT_SYSCALL_DEFINE1(name, ...) \
COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_DEFINE2(name, ...) \
@@ -68,6 +72,8 @@ typedef struct compat_sigaltstack {
typedef __compat_uid32_t compat_uid_t;
typedef __compat_gid32_t compat_gid_t;
+typedef compat_ulong_t compat_aio_context_t;
+
struct compat_sel_arg_struct;
struct rusage;
@@ -141,26 +147,23 @@ struct compat_sigaction {
};
/*
- * These functions operate strictly on struct compat_time*
- */
-extern int get_compat_timespec(struct timespec *,
- const struct compat_timespec __user *);
-extern int put_compat_timespec(const struct timespec *,
- struct compat_timespec __user *);
-extern int get_compat_timeval(struct timeval *,
- const struct compat_timeval __user *);
-extern int put_compat_timeval(const struct timeval *,
- struct compat_timeval __user *);
-/*
* These functions operate on 32- or 64-bit specs depending on
- * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
- * naming as compat_get/put_ rather than get/put_compat_.
+ * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
*/
extern int compat_get_timespec(struct timespec *, const void __user *);
extern int compat_put_timespec(const struct timespec *, void __user *);
extern int compat_get_timeval(struct timeval *, const void __user *);
extern int compat_put_timeval(const struct timeval *, void __user *);
+/*
+ * This function convert a timespec if necessary and returns a *user
+ * space* pointer. If no conversion is necessary, it returns the
+ * initial pointer. NULL is a legitimate argument and will always
+ * output NULL.
+ */
+extern int compat_convert_timespec(struct timespec __user **,
+ const void __user *);
+
struct compat_iovec {
compat_uptr_t iov_base;
compat_size_t iov_len;
@@ -318,7 +321,7 @@ asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
compat_ssize_t msgsz, int msgflg);
asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
- compat_ssize_t msgsz, long msgtyp, int msgflg);
+ compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg);
long compat_sys_msgctl(int first, int second, void __user *uptr);
long compat_sys_shmctl(int first, int second, void __user *uptr);
long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
@@ -337,6 +340,19 @@ asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
const struct compat_iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high);
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
+asmlinkage long compat_sys_preadv64(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, loff_t pos);
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
+asmlinkage long compat_sys_pwritev64(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, loff_t pos);
+#endif
+
asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
@@ -451,7 +467,7 @@ asmlinkage long compat_sys_timerfd_settime(int ufd, int flags,
asmlinkage long compat_sys_timerfd_gettime(int ufd,
struct compat_itimerspec __user *otmr);
-asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page,
+asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages,
__u32 __user *pages,
const int __user *nodes,
int __user *status,
@@ -481,20 +497,20 @@ asmlinkage long compat_sys_statfs64(const char __user *pathname,
asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz,
struct compat_statfs64 __user *buf);
asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
- unsigned long arg);
+ compat_ulong_t arg);
asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd,
- unsigned long arg);
+ compat_ulong_t arg);
asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p);
-asmlinkage long compat_sys_io_getevents(aio_context_t ctx_id,
- unsigned long min_nr,
- unsigned long nr,
+asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id,
+ compat_long_t min_nr,
+ compat_long_t nr,
struct io_event __user *events,
struct compat_timespec __user *timeout);
-asmlinkage long compat_sys_io_submit(aio_context_t ctx_id, int nr,
+asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr,
u32 __user *iocb);
asmlinkage long compat_sys_mount(const char __user *dev_name,
const char __user *dir_name,
- const char __user *type, unsigned long flags,
+ const char __user *type, compat_ulong_t flags,
const void __user *data);
asmlinkage long compat_sys_old_readdir(unsigned int fd,
struct compat_old_linux_dirent __user *,
@@ -502,9 +518,11 @@ asmlinkage long compat_sys_old_readdir(unsigned int fd,
asmlinkage long compat_sys_getdents(unsigned int fd,
struct compat_linux_dirent __user *dirent,
unsigned int count);
+#ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64
asmlinkage long compat_sys_getdents64(unsigned int fd,
struct linux_dirent64 __user *dirent,
unsigned int count);
+#endif
asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
unsigned int nr_segs, unsigned int flags);
asmlinkage long compat_sys_open(const char __user *filename, int flags,
@@ -549,9 +567,9 @@ asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
unsigned vlen, unsigned int flags);
asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
unsigned int flags);
-asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
+asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
unsigned flags);
-asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
+asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
unsigned flags, struct sockaddr __user *addr,
int __user *addrlen);
asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
@@ -615,16 +633,16 @@ asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig,
struct compat_siginfo __user *uinfo);
asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info);
asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
- unsigned long arg);
+ compat_ulong_t arg);
asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
struct compat_timespec __user *utime, u32 __user *uaddr2,
u32 val3);
asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
char __user *optval, int __user *optlen);
-asmlinkage long compat_sys_kexec_load(unsigned long entry,
- unsigned long nr_segments,
+asmlinkage long compat_sys_kexec_load(compat_ulong_t entry,
+ compat_ulong_t nr_segments,
struct compat_kexec_segment __user *,
- unsigned long flags);
+ compat_ulong_t flags);
asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes,
const struct compat_mq_attr __user *u_mqstat,
struct compat_mq_attr __user *u_omqstat);
@@ -635,11 +653,11 @@ asmlinkage long compat_sys_mq_open(const char __user *u_name,
struct compat_mq_attr __user *u_attr);
asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
const char __user *u_msg_ptr,
- size_t msg_len, unsigned int msg_prio,
+ compat_size_t msg_len, unsigned int msg_prio,
const struct compat_timespec __user *u_abs_timeout);
asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
char __user *u_msg_ptr,
- size_t msg_len, unsigned int __user *u_msg_prio,
+ compat_size_t msg_len, unsigned int __user *u_msg_prio,
const struct compat_timespec __user *u_abs_timeout);
asmlinkage long compat_sys_socketcall(int call, u32 __user *args);
asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args);
@@ -654,12 +672,12 @@ extern void __user *compat_alloc_user_space(unsigned long len);
asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
const struct compat_iovec __user *lvec,
- unsigned long liovcnt, const struct compat_iovec __user *rvec,
- unsigned long riovcnt, unsigned long flags);
+ compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+ compat_ulong_t riovcnt, compat_ulong_t flags);
asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
const struct compat_iovec __user *lvec,
- unsigned long liovcnt, const struct compat_iovec __user *rvec,
- unsigned long riovcnt, unsigned long flags);
+ compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
+ compat_ulong_t riovcnt, compat_ulong_t flags);
asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
compat_off_t __user *offset, compat_size_t count);