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Diffstat (limited to 'include/linux/compat.h')
-rw-r--r--include/linux/compat.h65
1 files changed, 23 insertions, 42 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index b354ce58966e..14d514233e1d 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -91,6 +91,11 @@
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#endif /* COMPAT_SYSCALL_DEFINEx */
+struct compat_iovec {
+ compat_uptr_t iov_base;
+ compat_size_t iov_len;
+};
+
#ifdef CONFIG_COMPAT
#ifndef compat_user_stack_pointer
@@ -248,11 +253,6 @@ typedef struct compat_siginfo {
} _sifields;
} compat_siginfo_t;
-struct compat_iovec {
- compat_uptr_t iov_base;
- compat_size_t iov_len;
-};
-
struct compat_rlimit {
compat_ulong_t rlim_cur;
compat_ulong_t rlim_max;
@@ -451,12 +451,6 @@ extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
struct epoll_event; /* fortunately, this one is fixed-layout */
-extern ssize_t compat_rw_copy_check_uvector(int type,
- const struct compat_iovec __user *uvector,
- unsigned long nr_segs,
- unsigned long fast_segs, struct iovec *fast_pointer,
- struct iovec **ret_pointer);
-
extern void __user *compat_alloc_user_space(unsigned long len);
int compat_restore_altstack(const compat_stack_t __user *uss);
@@ -522,12 +516,6 @@ asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd,
asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
compat_ulong_t arg);
-/* fs/namespace.c */
-asmlinkage long compat_sys_mount(const char __user *dev_name,
- const char __user *dir_name,
- const char __user *type, compat_ulong_t flags,
- const void __user *data);
-
/* fs/open.c */
asmlinkage long compat_sys_statfs(const char __user *pathname,
struct compat_statfs __user *buf);
@@ -551,26 +539,22 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
/* fs/read_write.c */
asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
-asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd,
- const struct compat_iovec __user *vec, compat_ulong_t vlen);
-asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd,
- const struct compat_iovec __user *vec, compat_ulong_t vlen);
/* No generic prototype for pread64 and pwrite64 */
asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
- const struct compat_iovec __user *vec,
+ const struct iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high);
asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
- const struct compat_iovec __user *vec,
+ const struct 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,
+ const struct 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,
+ const struct iovec __user *vec,
unsigned long vlen, loff_t pos);
#endif
@@ -607,10 +591,6 @@ asmlinkage long compat_sys_signalfd4(int ufd,
const compat_sigset_t __user *sigmask,
compat_size_t sigsetsize, int flags);
-/* fs/splice.c */
-asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
- unsigned int nr_segs, unsigned int flags);
-
/* fs/stat.c */
asmlinkage long compat_sys_newfstatat(unsigned int dfd,
const char __user *filename,
@@ -794,32 +774,24 @@ asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
int flags);
asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
unsigned vlen, unsigned int flags);
-asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid,
- const struct compat_iovec __user *lvec,
- 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,
- compat_ulong_t liovcnt, const struct compat_iovec __user *rvec,
- compat_ulong_t riovcnt, compat_ulong_t flags);
asmlinkage long compat_sys_execveat(int dfd, const char __user *filename,
const compat_uptr_t __user *argv,
const compat_uptr_t __user *envp, int flags);
asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
- const struct compat_iovec __user *vec,
+ const struct iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
- const struct compat_iovec __user *vec,
+ const struct iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2
-asmlinkage long compat_sys_readv64v2(unsigned long fd,
- const struct compat_iovec __user *vec,
+asmlinkage long compat_sys_preadv64v2(unsigned long fd,
+ const struct iovec __user *vec,
unsigned long vlen, loff_t pos, rwf_t flags);
#endif
#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2
asmlinkage long compat_sys_pwritev64v2(unsigned long fd,
- const struct compat_iovec __user *vec,
+ const struct iovec __user *vec,
unsigned long vlen, loff_t pos, rwf_t flags);
#endif
@@ -933,6 +905,15 @@ static inline bool in_compat_syscall(void) { return false; }
#endif /* CONFIG_COMPAT */
/*
+ * Some legacy ABIs like the i386 one use less than natural alignment for 64-bit
+ * types, and will need special compat treatment for that. Most architectures
+ * don't need that special handling even for compat syscalls.
+ */
+#ifndef compat_need_64bit_alignment_fixup
+#define compat_need_64bit_alignment_fixup() false
+#endif
+
+/*
* A pointer passed in from user mode. This should not
* be used for syscall parameters, just declare them
* as pointers because the syscall entry code will have