From 1da91ea87aefe2c25b68c9f96947a9271ba6325d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 31 May 2024 14:12:01 -0400 Subject: introduce fd_file(), convert all accessors to it. For any changes of struct fd representation we need to turn existing accesses to fields into calls of wrappers. Accesses to struct fd::flags are very few (3 in linux/file.h, 1 in net/socket.c, 3 in fs/overlayfs/file.c and 3 more in explicit initializers). Those can be dealt with in the commit converting to new layout; accesses to struct fd::file are too many for that. This commit converts (almost) all of f.file to fd_file(f). It's not entirely mechanical ('file' is used as a member name more than just in struct fd) and it does not even attempt to distinguish the uses in pointer context from those in boolean context; the latter will be eventually turned into a separate helper (fd_empty()). NOTE: mass conversion to fd_empty(), tempting as it might be, is a bad idea; better do that piecewise in commit that convert from fdget...() to CLASS(...). [conflicts in fs/fhandle.c, kernel/bpf/syscall.c, mm/memcontrol.c caught by git; fs/stat.c one got caught by git grep] [fs/xattr.c conflict] Reviewed-by: Christian Brauner Signed-off-by: Al Viro --- ipc/mqueue.c | 50 +++++++++++++++++++++++++------------------------- 1 file changed, 25 insertions(+), 25 deletions(-) (limited to 'ipc') diff --git a/ipc/mqueue.c b/ipc/mqueue.c index a7cbd69efbef..34fa0bd8bb11 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -1085,20 +1085,20 @@ static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, audit_mq_sendrecv(mqdes, msg_len, msg_prio, ts); f = fdget(mqdes); - if (unlikely(!f.file)) { + if (unlikely(!fd_file(f))) { ret = -EBADF; goto out; } - inode = file_inode(f.file); - if (unlikely(f.file->f_op != &mqueue_file_operations)) { + inode = file_inode(fd_file(f)); + if (unlikely(fd_file(f)->f_op != &mqueue_file_operations)) { ret = -EBADF; goto out_fput; } info = MQUEUE_I(inode); - audit_file(f.file); + audit_file(fd_file(f)); - if (unlikely(!(f.file->f_mode & FMODE_WRITE))) { + if (unlikely(!(fd_file(f)->f_mode & FMODE_WRITE))) { ret = -EBADF; goto out_fput; } @@ -1138,7 +1138,7 @@ static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, } if (info->attr.mq_curmsgs == info->attr.mq_maxmsg) { - if (f.file->f_flags & O_NONBLOCK) { + if (fd_file(f)->f_flags & O_NONBLOCK) { ret = -EAGAIN; } else { wait.task = current; @@ -1199,20 +1199,20 @@ static int do_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, audit_mq_sendrecv(mqdes, msg_len, 0, ts); f = fdget(mqdes); - if (unlikely(!f.file)) { + if (unlikely(!fd_file(f))) { ret = -EBADF; goto out; } - inode = file_inode(f.file); - if (unlikely(f.file->f_op != &mqueue_file_operations)) { + inode = file_inode(fd_file(f)); + if (unlikely(fd_file(f)->f_op != &mqueue_file_operations)) { ret = -EBADF; goto out_fput; } info = MQUEUE_I(inode); - audit_file(f.file); + audit_file(fd_file(f)); - if (unlikely(!(f.file->f_mode & FMODE_READ))) { + if (unlikely(!(fd_file(f)->f_mode & FMODE_READ))) { ret = -EBADF; goto out_fput; } @@ -1242,7 +1242,7 @@ static int do_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, } if (info->attr.mq_curmsgs == 0) { - if (f.file->f_flags & O_NONBLOCK) { + if (fd_file(f)->f_flags & O_NONBLOCK) { spin_unlock(&info->lock); ret = -EAGAIN; } else { @@ -1356,11 +1356,11 @@ static int do_mq_notify(mqd_t mqdes, const struct sigevent *notification) /* and attach it to the socket */ retry: f = fdget(notification->sigev_signo); - if (!f.file) { + if (!fd_file(f)) { ret = -EBADF; goto out; } - sock = netlink_getsockbyfilp(f.file); + sock = netlink_getsockbyfilp(fd_file(f)); fdput(f); if (IS_ERR(sock)) { ret = PTR_ERR(sock); @@ -1379,13 +1379,13 @@ retry: } f = fdget(mqdes); - if (!f.file) { + if (!fd_file(f)) { ret = -EBADF; goto out; } - inode = file_inode(f.file); - if (unlikely(f.file->f_op != &mqueue_file_operations)) { + inode = file_inode(fd_file(f)); + if (unlikely(fd_file(f)->f_op != &mqueue_file_operations)) { ret = -EBADF; goto out_fput; } @@ -1460,31 +1460,31 @@ static int do_mq_getsetattr(int mqdes, struct mq_attr *new, struct mq_attr *old) return -EINVAL; f = fdget(mqdes); - if (!f.file) + if (!fd_file(f)) return -EBADF; - if (unlikely(f.file->f_op != &mqueue_file_operations)) { + if (unlikely(fd_file(f)->f_op != &mqueue_file_operations)) { fdput(f); return -EBADF; } - inode = file_inode(f.file); + inode = file_inode(fd_file(f)); info = MQUEUE_I(inode); spin_lock(&info->lock); if (old) { *old = info->attr; - old->mq_flags = f.file->f_flags & O_NONBLOCK; + old->mq_flags = fd_file(f)->f_flags & O_NONBLOCK; } if (new) { audit_mq_getsetattr(mqdes, new); - spin_lock(&f.file->f_lock); + spin_lock(&fd_file(f)->f_lock); if (new->mq_flags & O_NONBLOCK) - f.file->f_flags |= O_NONBLOCK; + fd_file(f)->f_flags |= O_NONBLOCK; else - f.file->f_flags &= ~O_NONBLOCK; - spin_unlock(&f.file->f_lock); + fd_file(f)->f_flags &= ~O_NONBLOCK; + spin_unlock(&fd_file(f)->f_lock); inode_set_atime_to_ts(inode, inode_set_ctime_current(inode)); } -- cgit v1.2.3-70-g09d2