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add preadv/pwritev syscall wrappers

This commit is contained in:
Rich Felker 2012-09-09 16:29:33 -04:00
parent 743546a933
commit ea544bfe80
3 changed files with 35 additions and 0 deletions
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9
include/sys/uio.h
View File

@ -11,6 +11,10 @@ extern "C" {
#define __NEED_ssize_t
#define __NEED_struct_iovec
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define __NEED_off_t
#endif
#ifdef _GNU_SOURCE
#define __NEED_pid_t
#endif
@ -20,6 +24,11 @@ extern "C" {
ssize_t readv (int, const struct iovec *, int);
ssize_t writev (int, const struct iovec *, int);
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
ssize_t preadv (int, const struct iovec *, int, off_t);
ssize_t pwritev (int, const struct iovec *, int, off_t);
#endif
#ifdef _GNU_SOURCE
ssize_t process_vm_writev(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long);
ssize_t process_vm_readv(pid_t, const struct iovec *, unsigned long, const struct iovec *, unsigned long, unsigned long);

13
src/unistd/preadv.c Normal file
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@ -0,0 +1,13 @@
#define _GNU_SOURCE
#include <sys/uio.h>
#include <unistd.h>
#include "syscall.h"
#include "libc.h"
ssize_t preadv(int fd, const struct iovec *iov, int count, off_t ofs)
{
return syscall_cp(SYS_preadv, fd, iov, count,
(long)(ofs), (long)(ofs>>32));
}
LFS64(preadv);

13
src/unistd/pwritev.c Normal file
View File

@ -0,0 +1,13 @@
#define _GNU_SOURCE
#include <sys/uio.h>
#include <unistd.h>
#include "syscall.h"
#include "libc.h"
ssize_t pwritev(int fd, const struct iovec *iov, int count, off_t ofs)
{
return syscall_cp(SYS_pwritev, fd, iov, count,
(long)(ofs), (long)(ofs>>32));
}
LFS64(pwritev);