127 lines
1.9 KiB
C
127 lines
1.9 KiB
C
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/*
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* <sys/uio.h> wrapper functions.
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*
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* Authors:
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* Steffen Kiess (s-kiess@web.de)
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*
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* Copyright (C) 2012 Steffen Kiess
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*/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif /* ndef _GNU_SOURCE */
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#include <sys/uio.h>
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#include "map.h"
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#include "mph.h"
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G_BEGIN_DECLS
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static struct iovec*
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from_iovec (struct Mono_Posix_Iovec *iov, gint32 iovcnt)
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{
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struct iovec* v;
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gint32 i;
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if (iovcnt < 0) {
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errno = EINVAL;
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return NULL;
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}
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v = malloc (iovcnt * sizeof (struct iovec));
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if (!v) {
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return NULL;
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}
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for (i = 0; i < iovcnt; i++) {
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if (Mono_Posix_FromIovec (&iov[i], &v[i]) != 0) {
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free (v);
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return NULL;
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}
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}
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return v;
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}
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#ifdef HAVE_READV
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gint64
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Mono_Posix_Syscall_readv (int dirfd, struct Mono_Posix_Iovec *iov, gint32 iovcnt)
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{
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struct iovec* v;
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gint64 res;
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v = from_iovec (iov, iovcnt);
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if (!v) {
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return -1;
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}
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res = readv(dirfd, v, iovcnt);
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free (v);
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return res;
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}
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#endif /* def HAVE_READV */
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#ifdef HAVE_WRITEV
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gint64
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Mono_Posix_Syscall_writev (int dirfd, struct Mono_Posix_Iovec *iov, gint32 iovcnt)
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{
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struct iovec* v;
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gint64 res;
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v = from_iovec (iov, iovcnt);
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if (!v) {
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return -1;
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}
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res = writev (dirfd, v, iovcnt);
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free (v);
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return res;
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}
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#endif /* def HAVE_WRITEV */
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#ifdef HAVE_PREADV
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gint64
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Mono_Posix_Syscall_preadv (int dirfd, struct Mono_Posix_Iovec *iov, gint32 iovcnt, gint64 off)
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{
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struct iovec* v;
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gint64 res;
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mph_return_if_off_t_overflow (off);
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v = from_iovec (iov, iovcnt);
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if (!v) {
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return -1;
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}
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res = preadv (dirfd, v, iovcnt, (off_t) off);
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free (v);
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return res;
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}
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#endif /* def HAVE_PREADV */
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#ifdef HAVE_PWRITEV
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gint64
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Mono_Posix_Syscall_pwritev (int dirfd, struct Mono_Posix_Iovec *iov, gint32 iovcnt, gint64 off)
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{
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struct iovec* v;
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gint64 res;
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mph_return_if_off_t_overflow (off);
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v = from_iovec (iov, iovcnt);
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if (!v) {
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return -1;
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}
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res = pwritev (dirfd, v, iovcnt, (off_t) off);
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free (v);
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return res;
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}
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#endif /* def HAVE_PWRITEV */
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/*
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* vim: noexpandtab
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*/
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