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Added basic fcntl() functions and syscalls.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9201 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-05 13:36:44 +00:00
parent 6acb672431
commit d6571884c7
1 changed files with 83 additions and 4 deletions
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87
src/kernel/core/fs/vfs.cpp
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@ -2594,21 +2594,86 @@ common_ioctl(struct file_descriptor *descriptor, ulong op, void *buffer, size_t
{
struct vnode *vnode = descriptor->u.vnode;
if (FS_CALL(vnode, ioctl))
return FS_CALL(vnode, ioctl)(vnode->mount->cookie,vnode->private_node,descriptor->cookie,op,buffer,length);
if (FS_CALL(vnode, ioctl)) {
return FS_CALL(vnode, ioctl)(vnode->mount->cookie, vnode->private_node,
descriptor->cookie, op, buffer, length);
}
return EOPNOTSUPP;
}
static status_t
common_fcntl(int fd, int op, uint32 argument, bool kernel)
{
struct file_descriptor *descriptor;
struct vnode *vnode;
status_t status;
FUNCTION(("common_fcntl(fd = %d, op = %d, argument = %lx, %s)\n",
fd, op, argument, kernel ? "kernel" : "user"));
descriptor = get_fd_and_vnode(fd, &vnode, kernel);
if (descriptor == NULL)
return B_FILE_ERROR;
switch (op) {
case F_SETFD:
// Set file descriptor flags
// O_CLOEXEC is the only flag available at this time
if (argument == FD_CLOEXEC)
descriptor->open_mode |= O_CLOEXEC;
else
descriptor->open_mode &= O_CLOEXEC;
status = B_OK;
break;
case F_GETFD:
// Get file descriptor flags
status = (descriptor->open_mode & O_CLOEXEC) ? FD_CLOEXEC : 0;
break;
case F_SETFL:
// Set file descriptor open mode
if (FS_CALL(vnode, set_flags)) {
// we only accept changes to O_APPEND and O_NONBLOCK
argument &= O_APPEND | O_NONBLOCK;
status = FS_CALL(vnode, set_flags)(vnode->mount->cookie, vnode->private_node, descriptor->cookie, (int)argument);
if (status == B_OK) {
// update this descriptor's open_mode field
descriptor->open_mode = (descriptor->open_mode & ~(O_APPEND | O_NONBLOCK)) | argument;
}
} else
status = EOPNOTSUPP;
break;
case F_GETFL:
// Get file descriptor open mode
status = descriptor->open_mode;
break;
// ToDo: add support for more ops
default:
status = B_BAD_VALUE;
}
put_fd(descriptor);
return status;
}
static status_t
common_sync(int fd, bool kernel)
{
struct file_descriptor *descriptor;
struct vnode *vnode;
int status;
status_t status;
FUNCTION(("vfs_fsync: entry. fd %d kernel %d\n", fd, kernel));
FUNCTION(("common_fsync: entry. fd %d kernel %d\n", fd, kernel));
descriptor = get_fd_and_vnode(fd, &vnode, kernel);
if (descriptor == NULL)
@ -4026,6 +4091,13 @@ _kern_open_dir(int fd, const char *path)
}
status_t
_kern_fcntl(int fd, int op, uint32 argument)
{
return common_fcntl(fd, op, argument, true);
}
status_t
_kern_fsync(int fd)
{
@ -4805,6 +4877,13 @@ _user_open_parent_dir(int fd, char *userName, size_t nameLength)
}
status_t
_user_fcntl(int fd, int op, uint32 argument)
{
return common_fcntl(fd, op, argument, false);
}
status_t
_user_fsync(int fd)
{