1 files changed, 233 insertions, 0 deletions
diff --git a/support/unistd.c b/support/unistd.c
new file mode 100644
index 00000000000..33a640895dc
--- /dev/null
+++ b/support/unistd.c
@@ -0,0 +1,233 @@
+/*
+ * <unistd.h> wrapper functions.
+ *
+ * Authors:
+ *   Jonathan Pryor (jonpryor@vt.edu)
+ *
+ * Copyright (C) 2004 Jonathan Pryor
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif /* ndef _GNU_SOURCE */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>     /* for swab(3) on Mac OS X */
+
+#include "map.h"
+#include "mph.h"
+
+G_BEGIN_DECLS
+
+mph_off_t
+Mono_Posix_Syscall_lseek (gint32 fd, mph_off_t offset, gint32 whence)
+{
+	short _whence;
+	mph_return_if_off_t_overflow (offset);
+	if (Mono_Posix_FromSeekFlags (whence, &_whence) == -1)
+		return -1;
+	whence = _whence;
+
+	return lseek (fd, offset, whence);
+}
+
+mph_ssize_t
+Mono_Posix_Syscall_read (gint32 fd, void *buf, mph_size_t count)
+{
+	mph_return_if_size_t_overflow (count);
+	return read (fd, buf, (size_t) count);
+}
+
+mph_ssize_t
+Mono_Posix_Syscall_write (gint32 fd, const void *buf, mph_size_t count)
+{
+	mph_return_if_size_t_overflow (count);
+	return write (fd, buf, (size_t) count);
+}
+
+mph_ssize_t
+Mono_Posix_Syscall_pread (gint32 fd, void *buf, mph_size_t count, mph_off_t offset)
+{
+	mph_return_if_size_t_overflow (count);
+	mph_return_if_off_t_overflow (offset);
+
+	return pread (fd, buf, (size_t) count, (off_t) offset);
+}
+
+mph_ssize_t
+Mono_Posix_Syscall_pwrite (gint32 fd, const void *buf, mph_size_t count, mph_off_t offset)
+{
+	mph_return_if_size_t_overflow (count);
+	mph_return_if_off_t_overflow (offset);
+
+	return pwrite (fd, buf, (size_t) count, (off_t) offset);
+}
+
+gint32
+Mono_Posix_Syscall_pipe (gint32 *reading, gint32 *writing)
+{
+	int filedes[2] = {-1, -1};
+	int r;
+
+	if (reading == NULL || writing == NULL) {
+		errno = EFAULT;
+		return -1;
+	}
+
+	r = pipe (filedes);
+
+	*reading = filedes[0];
+	*writing = filedes[1];
+	return r;
+}
+
+char*
+Mono_Posix_Syscall_getcwd (char *buf, mph_size_t size)
+{
+	mph_return_val_if_size_t_overflow (size, NULL);
+	return getcwd (buf, (size_t) size);
+}
+
+gint64
+Mono_Posix_Syscall_fpathconf (int filedes, int name)
+{
+	if (Mono_Posix_FromPathConf (name, &name) == -1)
+		return -1;
+	return fpathconf (filedes, name);
+}
+
+gint64
+Mono_Posix_Syscall_pathconf (char *path, int name)
+{
+	if (Mono_Posix_FromPathConf (name, &name) == -1)
+		return -1;
+	return pathconf (path, name);
+}
+
+gint64
+Mono_Posix_Syscall_sysconf (int name)
+{
+	if (Mono_Posix_FromSysConf (name, &name) == -1)
+		return -1;
+	return sysconf (name);
+}
+
+gint64
+Mono_Posix_Syscall_confstr (int name, char *buf, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	if (Mono_Posix_FromConfStr (name, &name) == -1)
+		return -1;
+	return confstr (name, buf, (size_t) len);
+}
+
+#ifdef HAVE_TTYNAME_R
+gint32
+Mono_Posix_Syscall_ttyname_r (int fd, char *buf, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return ttyname_r (fd, buf, (size_t) len);
+}
+#endif /* ndef HAVE_TTYNAME_R */
+
+gint32
+Mono_Posix_Syscall_readlink (const char *path, char *buf, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return readlink (path, buf, (size_t) len);
+}
+
+gint32
+Mono_Posix_Syscall_getlogin_r (char *buf, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return getlogin_r (buf, (size_t) len);
+}
+
+gint32
+Mono_Posix_Syscall_gethostname (char *buf, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return gethostname (buf, (size_t) len);
+}
+
+gint32
+Mono_Posix_Syscall_sethostname (const char *name, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return sethostname (name, (size_t) len);
+}
+
+gint64
+Mono_Posix_Syscall_gethostid (void)
+{
+	return gethostid ();
+}
+
+gint32
+Mono_Posix_Syscall_sethostid (gint64 hostid)
+{
+	mph_return_if_long_overflow (hostid);
+#ifdef MPH_ON_BSD
+	sethostid ((long) hostid);
+	return 0;
+#else
+	return sethostid ((long) hostid);
+#endif
+}
+
+gint32
+Mono_Posix_Syscall_getdomainname (char *name, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return getdomainname (name, (size_t) len);
+}
+
+gint32
+Mono_Posix_Syscall_setdomainname (const char *name, mph_size_t len)
+{
+	mph_return_if_size_t_overflow (len);
+	return setdomainname (name, (size_t) len);
+}
+
+gint32
+Mono_Posix_Syscall_truncate (const char *path, mph_off_t length)
+{
+	mph_return_if_off_t_overflow (length);
+	return truncate (path, (off_t) length);
+}
+
+gint32
+Mono_Posix_Syscall_ftruncate (int fd, mph_off_t length)
+{
+	mph_return_if_off_t_overflow (length);
+	return ftruncate (fd, (off_t) length);
+}
+
+gint32
+Mono_Posix_Syscall_lockf (int fd, int cmd, mph_off_t len)
+{
+	mph_return_if_off_t_overflow (len);
+	if (Mono_Posix_FromLockFlags (cmd, &cmd) == -1)
+		return -1;
+	return lockf (fd, cmd, (off_t) len);
+}
+
+void
+Mono_Posix_Syscall_swab (void *from, void *to, mph_ssize_t n)
+{
+	if (mph_have_long_overflow (n))
+		return;
+	swab (from, to, (ssize_t) n);
+}
+
+G_END_DECLS
+
+/*
+ * vim: noexpandtab
+ */