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RTEMS: Introduce <machine/_kernel_uio.h> 

This helps to avoid Newlib updates due to FreeBSD kernel space changes.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This commit is contained in:
Sebastian Huber 2018-08-07 15:35:37 +02:00
parent 9bbf89dd11
commit c07fa084e0
1 changed files with 6 additions and 54 deletions
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60
newlib/libc/sys/rtems/include/sys/uio.h
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@ -50,59 +50,7 @@ typedef __off_t off_t;
#define _OFF_T_DECLARED
#endif
#ifdef _KERNEL
struct uio {
struct iovec *uio_iov; /* scatter/gather list */
int uio_iovcnt; /* length of scatter/gather list */
off_t uio_offset; /* offset in target object */
ssize_t uio_resid; /* remaining bytes to process */
enum uio_seg uio_segflg; /* address space */
enum uio_rw uio_rw; /* operation */
struct thread *uio_td; /* owner */
};
/*
* Limits
*
* N.B.: UIO_MAXIOV must be no less than IOV_MAX from <sys/syslimits.h>
* which in turn must be no less than _XOPEN_IOV_MAX from <limits.h>. If
* we ever make this tunable (probably pointless), then IOV_MAX should be
* removed from <sys/syslimits.h> and applications would be expected to use
* sysconf(3) to find out the correct value, or else assume the worst
* (_XOPEN_IOV_MAX). Perhaps UIO_MAXIOV should be simply defined as
* IOV_MAX.
*/
#define UIO_MAXIOV 1024 /* max 1K of iov's */
struct vm_object;
struct vm_page;
struct bus_dma_segment;
struct uio *cloneuio(struct uio *uiop);
int copyinfrom(const void * __restrict src, void * __restrict dst,
size_t len, int seg);
int copyiniov(const struct iovec *iovp, u_int iovcnt, struct iovec **iov,
int error);
int copyinstrfrom(const void * __restrict src, void * __restrict dst,
size_t len, size_t * __restrict copied, int seg);
int copyinuio(const struct iovec *iovp, u_int iovcnt, struct uio **uiop);
int copyout_map(struct thread *td, vm_offset_t *addr, size_t sz);
int copyout_unmap(struct thread *td, vm_offset_t addr, size_t sz);
int physcopyin(void *src, vm_paddr_t dst, size_t len);
int physcopyout(vm_paddr_t src, void *dst, size_t len);
int physcopyin_vlist(struct bus_dma_segment *src, off_t offset,
vm_paddr_t dst, size_t len);
int physcopyout_vlist(vm_paddr_t src, struct bus_dma_segment *dst,
off_t offset, size_t len);
int uiomove(void *cp, int n, struct uio *uio);
int uiomove_frombuf(void *buf, int buflen, struct uio *uio);
int uiomove_fromphys(struct vm_page *ma[], vm_offset_t offset, int n,
struct uio *uio);
int uiomove_nofault(void *cp, int n, struct uio *uio);
int uiomove_object(struct vm_object *obj, off_t obj_size, struct uio *uio);
#else /* !_KERNEL */
#ifndef _KERNEL
__BEGIN_DECLS
ssize_t readv(int, const struct iovec *, int);
@ -113,6 +61,10 @@ ssize_t pwritev(int, const struct iovec *, int, off_t);
#endif
__END_DECLS
#endif /* _KERNEL */
#endif /* !_KERNEL */
#ifdef _KERNEL
/* Header file provided outside of Newlib */
#include <machine/_kernel_uio.h>
#endif
#endif /* !_SYS_UIO_H_ */