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Message-ID: <20251108002542.GN196391@frogsfrogsfrogs>
Date: Fri, 7 Nov 2025 16:25:42 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: Amir Goldstein <amir73il@...il.com>
Cc: tytso@....edu, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 04/23] fuse4fs: namespace some helpers
On Fri, Nov 07, 2025 at 09:09:58AM +0100, Amir Goldstein wrote:
> On Thu, Nov 06, 2025 at 02:44:07PM -0800, Darrick J. Wong wrote:
> > From: Darrick J. Wong <djwong@...nel.org>
> >
> > Prepend "fuse4fs_" to all helper functions that take a struct fuse4fs
> > object pointer.
> >
> > Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
> > ---
> > fuse4fs/fuse4fs.c | 177 +++++++++++++++++++++++++++--------------------------
> > 1 file changed, 90 insertions(+), 87 deletions(-)
> >
> >
> > diff --git a/fuse4fs/fuse4fs.c b/fuse4fs/fuse4fs.c
> > index daf22e0fe7fde5..2ef5ad60163639 100644
> > --- a/fuse4fs/fuse4fs.c
> > +++ b/fuse4fs/fuse4fs.c
> > @@ -2,6 +2,7 @@
> > * fuse4fs.c - FUSE low-level server for e2fsprogs.
> > *
> > * Copyright (C) 2014-2025 Oracle.
> > + * Copyright (C) 2025 CTERA Networks.
>
> I think this belongs to next patch :)
Moved; thanks for the feedback!
--D
> Thanks,
> Amir.
>
> > *
> > * %Begin-Header%
> > * This file may be redistributed under the terms of the GNU Public
> > @@ -852,7 +853,7 @@ static int ext2_file_type(unsigned int mode)
> > return 0;
> > }
> >
> > -static int fs_can_allocate(struct fuse4fs *ff, blk64_t num)
> > +static int fuse4fs_can_allocate(struct fuse4fs *ff, blk64_t num)
> > {
> > ext2_filsys fs = ff->fs;
> > blk64_t reserved;
> > @@ -879,21 +880,22 @@ static int fs_can_allocate(struct fuse4fs *ff, blk64_t num)
> > return ext2fs_free_blocks_count(fs->super) > reserved + num;
> > }
> >
> > -static int fuse4fs_is_writeable(struct fuse4fs *ff)
> > +static int fuse4fs_is_writeable(const struct fuse4fs *ff)
> > {
> > return ff->opstate == F4OP_WRITABLE &&
> > (ff->fs->super->s_error_count == 0);
> > }
> >
> > -static inline int is_superuser(struct fuse4fs *ff, struct fuse_context *ctxt)
> > +static inline int fuse4fs_is_superuser(struct fuse4fs *ff,
> > + const struct fuse_context *ctxt)
> > {
> > if (ff->fakeroot)
> > return 1;
> > return ctxt->uid == 0;
> > }
> >
> > -static inline int want_check_owner(struct fuse4fs *ff,
> > - struct fuse_context *ctxt)
> > +static inline int fuse4fs_want_check_owner(struct fuse4fs *ff,
> > + const struct fuse_context *ctxt)
> > {
> > /*
> > * The kernel is responsible for access control, so we allow anything
> > @@ -901,14 +903,14 @@ static inline int want_check_owner(struct fuse4fs *ff,
> > */
> > if (ff->kernel)
> > return 0;
> > - return !is_superuser(ff, ctxt);
> > + return !fuse4fs_is_superuser(ff, ctxt);
> > }
> >
> > /* Test for append permission */
> > #define A_OK 16
> >
> > -static int check_iflags_access(struct fuse4fs *ff, ext2_ino_t ino,
> > - const struct ext2_inode *inode, int mask)
> > +static int fuse4fs_iflags_access(struct fuse4fs *ff, ext2_ino_t ino,
> > + const struct ext2_inode *inode, int mask)
> > {
> > EXT2FS_BUILD_BUG_ON((A_OK & (R_OK | W_OK | X_OK | F_OK)) != 0);
> >
> > @@ -936,7 +938,7 @@ static int check_iflags_access(struct fuse4fs *ff, ext2_ino_t ino,
> > return 0;
> > }
> >
> > -static int check_inum_access(struct fuse4fs *ff, ext2_ino_t ino, int mask)
> > +static int fuse4fs_inum_access(struct fuse4fs *ff, ext2_ino_t ino, int mask)
> > {
> > struct fuse_context *ctxt = fuse_get_context();
> > ext2_filsys fs = ff->fs;
> > @@ -968,7 +970,7 @@ static int check_inum_access(struct fuse4fs *ff, ext2_ino_t ino, int mask)
> > if (mask == 0)
> > return 0;
> >
> > - ret = check_iflags_access(ff, ino, &inode, mask);
> > + ret = fuse4fs_iflags_access(ff, ino, &inode, mask);
> > if (ret)
> > return ret;
> >
> > @@ -977,7 +979,7 @@ static int check_inum_access(struct fuse4fs *ff, ext2_ino_t ino, int mask)
> > return 0;
> >
> > /* Figure out what root's allowed to do */
> > - if (is_superuser(ff, ctxt)) {
> > + if (fuse4fs_is_superuser(ff, ctxt)) {
> > /* Non-file access always ok */
> > if (!LINUX_S_ISREG(inode.i_mode))
> > return 0;
> > @@ -1783,8 +1785,8 @@ static int op_readlink(const char *path, char *buf, size_t len)
> > return ret;
> > }
> >
> > -static int __getxattr(struct fuse4fs *ff, ext2_ino_t ino, const char *name,
> > - void **value, size_t *value_len)
> > +static int fuse4fs_getxattr(struct fuse4fs *ff, ext2_ino_t ino,
> > + const char *name, void **value, size_t *value_len)
> > {
> > ext2_filsys fs = ff->fs;
> > struct ext2_xattr_handle *h;
> > @@ -1814,8 +1816,8 @@ static int __getxattr(struct fuse4fs *ff, ext2_ino_t ino, const char *name,
> > return ret;
> > }
> >
> > -static int __setxattr(struct fuse4fs *ff, ext2_ino_t ino, const char *name,
> > - void *value, size_t valuelen)
> > +static int fuse4fs_setxattr(struct fuse4fs *ff, ext2_ino_t ino,
> > + const char *name, void *value, size_t valuelen)
> > {
> > ext2_filsys fs = ff->fs;
> > struct ext2_xattr_handle *h;
> > @@ -1845,8 +1847,8 @@ static int __setxattr(struct fuse4fs *ff, ext2_ino_t ino, const char *name,
> > return ret;
> > }
> >
> > -static int propagate_default_acls(struct fuse4fs *ff, ext2_ino_t parent,
> > - ext2_ino_t child, mode_t mode)
> > +static int fuse4fs_propagate_default_acls(struct fuse4fs *ff, ext2_ino_t parent,
> > + ext2_ino_t child, mode_t mode)
> > {
> > void *def;
> > size_t deflen;
> > @@ -1855,8 +1857,8 @@ static int propagate_default_acls(struct fuse4fs *ff, ext2_ino_t parent,
> > if (!ff->acl || S_ISDIR(mode))
> > return 0;
> >
> > - ret = __getxattr(ff, parent, XATTR_NAME_POSIX_ACL_DEFAULT, &def,
> > - &deflen);
> > + ret = fuse4fs_getxattr(ff, parent, XATTR_NAME_POSIX_ACL_DEFAULT, &def,
> > + &deflen);
> > switch (ret) {
> > case -ENODATA:
> > case -ENOENT:
> > @@ -1868,7 +1870,8 @@ static int propagate_default_acls(struct fuse4fs *ff, ext2_ino_t parent,
> > return ret;
> > }
> >
> > - ret = __setxattr(ff, child, XATTR_NAME_POSIX_ACL_DEFAULT, def, deflen);
> > + ret = fuse4fs_setxattr(ff, child, XATTR_NAME_POSIX_ACL_DEFAULT, def,
> > + deflen);
> > ext2fs_free_mem(&def);
> > return ret;
> > }
> > @@ -1997,7 +2000,7 @@ static int op_mknod(const char *path, mode_t mode, dev_t dev)
> > *node_name = 0;
> >
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 2)) {
> > + if (!fuse4fs_can_allocate(ff, 2)) {
> > ret = -ENOSPC;
> > goto out2;
> > }
> > @@ -2009,7 +2012,7 @@ static int op_mknod(const char *path, mode_t mode, dev_t dev)
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, parent, A_OK | W_OK);
> > + ret = fuse4fs_inum_access(ff, parent, A_OK | W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -2079,7 +2082,7 @@ static int op_mknod(const char *path, mode_t mode, dev_t dev)
> >
> > ext2fs_inode_alloc_stats2(fs, child, 1, 0);
> >
> > - ret = propagate_default_acls(ff, parent, child, inode.i_mode);
> > + ret = fuse4fs_propagate_default_acls(ff, parent, child, inode.i_mode);
> > if (ret)
> > goto out2;
> >
> > @@ -2127,7 +2130,7 @@ static int op_mkdir(const char *path, mode_t mode)
> > *node_name = 0;
> >
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 1)) {
> > + if (!fuse4fs_can_allocate(ff, 1)) {
> > ret = -ENOSPC;
> > goto out2;
> > }
> > @@ -2139,7 +2142,7 @@ static int op_mkdir(const char *path, mode_t mode)
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, parent, A_OK | W_OK);
> > + ret = fuse4fs_inum_access(ff, parent, A_OK | W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -2212,7 +2215,7 @@ static int op_mkdir(const char *path, mode_t mode)
> > goto out3;
> > }
> >
> > - ret = propagate_default_acls(ff, parent, child, inode.i_mode);
> > + ret = fuse4fs_propagate_default_acls(ff, parent, child, inode.i_mode);
> > if (ret)
> > goto out3;
> >
> > @@ -2253,7 +2256,7 @@ static int fuse4fs_unlink(struct fuse4fs *ff, const char *path,
> > base_name = filename;
> > }
> >
> > - ret = check_inum_access(ff, dir, W_OK);
> > + ret = fuse4fs_inum_access(ff, dir, W_OK);
> > if (ret) {
> > free(filename);
> > return ret;
> > @@ -2275,8 +2278,8 @@ static int fuse4fs_unlink(struct fuse4fs *ff, const char *path,
> > return 0;
> > }
> >
> > -static int remove_ea_inodes(struct fuse4fs *ff, ext2_ino_t ino,
> > - struct ext2_inode_large *inode)
> > +static int fuse4fs_remove_ea_inodes(struct fuse4fs *ff, ext2_ino_t ino,
> > + struct ext2_inode_large *inode)
> > {
> > ext2_filsys fs = ff->fs;
> > struct ext2_xattr_handle *h;
> > @@ -2320,7 +2323,7 @@ static int remove_ea_inodes(struct fuse4fs *ff, ext2_ino_t ino,
> > return 0;
> > }
> >
> > -static int remove_inode(struct fuse4fs *ff, ext2_ino_t ino)
> > +static int fuse4fs_remove_inode(struct fuse4fs *ff, ext2_ino_t ino)
> > {
> > ext2_filsys fs = ff->fs;
> > errcode_t err;
> > @@ -2366,7 +2369,7 @@ static int remove_inode(struct fuse4fs *ff, ext2_ino_t ino)
> > goto write_out;
> >
> > if (ext2fs_has_feature_ea_inode(fs->super)) {
> > - ret = remove_ea_inodes(ff, ino, &inode);
> > + ret = fuse4fs_remove_ea_inodes(ff, ino, &inode);
> > if (ret)
> > return ret;
> > }
> > @@ -2407,7 +2410,7 @@ static int __op_unlink(struct fuse4fs *ff, const char *path)
> > goto out;
> > }
> >
> > - ret = check_inum_access(ff, ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, ino, W_OK);
> > if (ret)
> > goto out;
> >
> > @@ -2415,7 +2418,7 @@ static int __op_unlink(struct fuse4fs *ff, const char *path)
> > if (ret)
> > goto out;
> >
> > - ret = remove_inode(ff, ino);
> > + ret = fuse4fs_remove_inode(ff, ino);
> > if (ret)
> > goto out;
> >
> > @@ -2483,7 +2486,7 @@ static int __op_rmdir(struct fuse4fs *ff, const char *path)
> > }
> > dbg_printf(ff, "%s: rmdir path=%s ino=%d\n", __func__, path, child);
> >
> > - ret = check_inum_access(ff, child, W_OK);
> > + ret = fuse4fs_inum_access(ff, child, W_OK);
> > if (ret)
> > goto out;
> >
> > @@ -2502,7 +2505,7 @@ static int __op_rmdir(struct fuse4fs *ff, const char *path)
> > goto out;
> > }
> >
> > - ret = check_inum_access(ff, rds.parent, W_OK);
> > + ret = fuse4fs_inum_access(ff, rds.parent, W_OK);
> > if (ret)
> > goto out;
> >
> > @@ -2514,7 +2517,7 @@ static int __op_rmdir(struct fuse4fs *ff, const char *path)
> > ret = fuse4fs_unlink(ff, path, &parent);
> > if (ret)
> > goto out;
> > - ret = remove_inode(ff, child);
> > + ret = fuse4fs_remove_inode(ff, child);
> > if (ret)
> > goto out;
> >
> > @@ -2587,7 +2590,7 @@ static int op_symlink(const char *src, const char *dest)
> > *node_name = 0;
> >
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 1)) {
> > + if (!fuse4fs_can_allocate(ff, 1)) {
> > ret = -ENOSPC;
> > goto out2;
> > }
> > @@ -2599,7 +2602,7 @@ static int op_symlink(const char *src, const char *dest)
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, parent, A_OK | W_OK);
> > + ret = fuse4fs_inum_access(ff, parent, A_OK | W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -2746,7 +2749,7 @@ static int op_rename(const char *from, const char *to,
> > FUSE4FS_CHECK_CONTEXT(ff);
> > dbg_printf(ff, "%s: renaming %s to %s\n", __func__, from, to);
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 5)) {
> > + if (!fuse4fs_can_allocate(ff, 5)) {
> > ret = -ENOSPC;
> > goto out;
> > }
> > @@ -2772,12 +2775,12 @@ static int op_rename(const char *from, const char *to,
> > goto out;
> > }
> >
> > - ret = check_inum_access(ff, from_ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, from_ino, W_OK);
> > if (ret)
> > goto out;
> >
> > if (to_ino) {
> > - ret = check_inum_access(ff, to_ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, to_ino, W_OK);
> > if (ret)
> > goto out;
> > }
> > @@ -2815,7 +2818,7 @@ static int op_rename(const char *from, const char *to,
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, from_dir_ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, from_dir_ino, W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -2840,7 +2843,7 @@ static int op_rename(const char *from, const char *to,
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, to_dir_ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, to_dir_ino, W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -2992,7 +2995,7 @@ static int op_link(const char *src, const char *dest)
> > *node_name = 0;
> >
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 2)) {
> > + if (!fuse4fs_can_allocate(ff, 2)) {
> > ret = -ENOSPC;
> > goto out2;
> > }
> > @@ -3005,7 +3008,7 @@ static int op_link(const char *src, const char *dest)
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, parent, A_OK | W_OK);
> > + ret = fuse4fs_inum_access(ff, parent, A_OK | W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -3021,7 +3024,7 @@ static int op_link(const char *src, const char *dest)
> > goto out2;
> > }
> >
> > - ret = check_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > + ret = fuse4fs_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -3066,7 +3069,7 @@ static int op_link(const char *src, const char *dest)
> > }
> >
> > /* Obtain group ids of the process that sent us a command(?) */
> > -static int get_req_groups(struct fuse4fs *ff, gid_t **gids, size_t *nr_gids)
> > +static int fuse4fs_get_groups(struct fuse4fs *ff, gid_t **gids, size_t *nr_gids)
> > {
> > ext2_filsys fs = ff->fs;
> > errcode_t err;
> > @@ -3111,8 +3114,8 @@ static int get_req_groups(struct fuse4fs *ff, gid_t **gids, size_t *nr_gids)
> > * that initiated the fuse request? Returns 1 for yes, 0 for no, or a negative
> > * errno.
> > */
> > -static int in_file_group(struct fuse_context *ctxt,
> > - const struct ext2_inode_large *inode)
> > +static int fuse4fs_in_file_group(struct fuse_context *ctxt,
> > + const struct ext2_inode_large *inode)
> > {
> > struct fuse4fs *ff = fuse4fs_get();
> > gid_t *gids = NULL;
> > @@ -3124,7 +3127,7 @@ static int in_file_group(struct fuse_context *ctxt,
> > if (ctxt->gid == gid)
> > return 1;
> >
> > - ret = get_req_groups(ff, &gids, &nr_gids);
> > + ret = fuse4fs_get_groups(ff, &gids, &nr_gids);
> > if (ret == -ENOENT) {
> > /* magic return code for "could not get caller group info" */
> > return 0;
> > @@ -3167,11 +3170,11 @@ static int op_chmod(const char *path, mode_t mode, struct fuse_file_info *fi)
> > goto out;
> > }
> >
> > - ret = check_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > + ret = fuse4fs_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > if (ret)
> > goto out;
> >
> > - if (want_check_owner(ff, ctxt) && ctxt->uid != inode_uid(inode)) {
> > + if (fuse4fs_want_check_owner(ff, ctxt) && ctxt->uid != inode_uid(inode)) {
> > ret = -EPERM;
> > goto out;
> > }
> > @@ -3181,8 +3184,8 @@ static int op_chmod(const char *path, mode_t mode, struct fuse_file_info *fi)
> > * of the user's groups, but FUSE only tells us about the primary
> > * group.
> > */
> > - if (!is_superuser(ff, ctxt)) {
> > - ret = in_file_group(ctxt, &inode);
> > + if (!fuse4fs_is_superuser(ff, ctxt)) {
> > + ret = fuse4fs_in_file_group(ctxt, &inode);
> > if (ret < 0)
> > goto out;
> >
> > @@ -3236,14 +3239,14 @@ static int op_chown(const char *path, uid_t owner, gid_t group,
> > goto out;
> > }
> >
> > - ret = check_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > + ret = fuse4fs_iflags_access(ff, ino, EXT2_INODE(&inode), W_OK);
> > if (ret)
> > goto out;
> >
> > /* FUSE seems to feed us ~0 to mean "don't change" */
> > if (owner != (uid_t) ~0) {
> > /* Only root gets to change UID. */
> > - if (want_check_owner(ff, ctxt) &&
> > + if (fuse4fs_want_check_owner(ff, ctxt) &&
> > !(inode_uid(inode) == ctxt->uid && owner == ctxt->uid)) {
> > ret = -EPERM;
> > goto out;
> > @@ -3253,7 +3256,7 @@ static int op_chown(const char *path, uid_t owner, gid_t group,
> >
> > if (group != (gid_t) ~0) {
> > /* Only root or the owner get to change GID. */
> > - if (want_check_owner(ff, ctxt) &&
> > + if (fuse4fs_want_check_owner(ff, ctxt) &&
> > inode_uid(inode) != ctxt->uid) {
> > ret = -EPERM;
> > goto out;
> > @@ -3363,7 +3366,7 @@ static int op_truncate(const char *path, off_t len, struct fuse_file_info *fi)
> > goto out;
> > dbg_printf(ff, "%s: ino=%d len=%jd\n", __func__, ino, (intmax_t) len);
> >
> > - ret = check_inum_access(ff, ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, ino, W_OK);
> > if (ret)
> > goto out;
> >
> > @@ -3445,7 +3448,7 @@ static int __op_open(struct fuse4fs *ff, const char *path,
> > }
> > dbg_printf(ff, "%s: ino=%d\n", __func__, file->ino);
> >
> > - ret = check_inum_access(ff, file->ino, check);
> > + ret = fuse4fs_inum_access(ff, file->ino, check);
> > if (ret) {
> > /*
> > * In a regular (Linux) fs driver, the kernel will open
> > @@ -3457,7 +3460,7 @@ static int __op_open(struct fuse4fs *ff, const char *path,
> > * also employ undocumented hacks (see above).
> > */
> > if (check == R_OK) {
> > - ret = check_inum_access(ff, file->ino, X_OK);
> > + ret = fuse4fs_inum_access(ff, file->ino, X_OK);
> > if (ret)
> > goto out;
> > check = X_OK;
> > @@ -3568,7 +3571,7 @@ static int op_write(const char *path EXT2FS_ATTR((unused)),
> > goto out;
> > }
> >
> > - if (!fs_can_allocate(ff, FUSE4FS_B_TO_FSB(ff, len))) {
> > + if (!fuse4fs_can_allocate(ff, FUSE4FS_B_TO_FSB(ff, len))) {
> > ret = -ENOSPC;
> > goto out;
> > }
> > @@ -3768,11 +3771,11 @@ static int op_getxattr(const char *path, const char *key, char *value,
> > }
> > dbg_printf(ff, "%s: ino=%d name=%s\n", __func__, ino, key);
> >
> > - ret = check_inum_access(ff, ino, R_OK);
> > + ret = fuse4fs_inum_access(ff, ino, R_OK);
> > if (ret)
> > goto out;
> >
> > - ret = __getxattr(ff, ino, key, &ptr, &plen);
> > + ret = fuse4fs_getxattr(ff, ino, key, &ptr, &plen);
> > if (ret)
> > goto out;
> >
> > @@ -3838,7 +3841,7 @@ static int op_listxattr(const char *path, char *names, size_t len)
> > }
> > dbg_printf(ff, "%s: ino=%d\n", __func__, ino);
> >
> > - ret = check_inum_access(ff, ino, R_OK);
> > + ret = fuse4fs_inum_access(ff, ino, R_OK);
> > if (ret)
> > goto out;
> >
> > @@ -3919,7 +3922,7 @@ static int op_setxattr(const char *path EXT2FS_ATTR((unused)),
> > }
> > dbg_printf(ff, "%s: ino=%d name=%s\n", __func__, ino, key);
> >
> > - ret = check_inum_access(ff, ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, ino, W_OK);
> > if (ret == -EACCES) {
> > ret = -EPERM;
> > goto out;
> > @@ -4008,7 +4011,7 @@ static int op_removexattr(const char *path, const char *key)
> > goto out;
> > }
> >
> > - if (!fs_can_allocate(ff, 1)) {
> > + if (!fuse4fs_can_allocate(ff, 1)) {
> > ret = -ENOSPC;
> > goto out;
> > }
> > @@ -4020,7 +4023,7 @@ static int op_removexattr(const char *path, const char *key)
> > }
> > dbg_printf(ff, "%s: ino=%d name=%s\n", __func__, ino, key);
> >
> > - ret = check_inum_access(ff, ino, W_OK);
> > + ret = fuse4fs_inum_access(ff, ino, W_OK);
> > if (ret)
> > goto out;
> >
> > @@ -4207,7 +4210,7 @@ static int op_access(const char *path, int mask)
> > goto out;
> > }
> >
> > - ret = check_inum_access(ff, ino, mask);
> > + ret = fuse4fs_inum_access(ff, ino, mask);
> > if (ret)
> > goto out;
> >
> > @@ -4247,7 +4250,7 @@ static int op_create(const char *path, mode_t mode, struct fuse_file_info *fp)
> > *node_name = 0;
> >
> > fs = fuse4fs_start(ff);
> > - if (!fs_can_allocate(ff, 1)) {
> > + if (!fuse4fs_can_allocate(ff, 1)) {
> > ret = -ENOSPC;
> > goto out2;
> > }
> > @@ -4259,7 +4262,7 @@ static int op_create(const char *path, mode_t mode, struct fuse_file_info *fp)
> > goto out2;
> > }
> >
> > - ret = check_inum_access(ff, parent, A_OK | W_OK);
> > + ret = fuse4fs_inum_access(ff, parent, A_OK | W_OK);
> > if (ret)
> > goto out2;
> >
> > @@ -4326,7 +4329,7 @@ static int op_create(const char *path, mode_t mode, struct fuse_file_info *fp)
> >
> > ext2fs_inode_alloc_stats2(fs, child, 1, 0);
> >
> > - ret = propagate_default_acls(ff, parent, child, inode.i_mode);
> > + ret = fuse4fs_propagate_default_acls(ff, parent, child, inode.i_mode);
> > if (ret)
> > goto out2;
> >
> > @@ -4374,7 +4377,7 @@ static int op_utimens(const char *path, const struct timespec ctv[2],
> > */
> > if (ctv[0].tv_nsec == UTIME_NOW && ctv[1].tv_nsec == UTIME_NOW)
> > access |= A_OK;
> > - ret = check_inum_access(ff, ino, access);
> > + ret = fuse4fs_inum_access(ff, ino, access);
> > if (ret)
> > goto out;
> >
> > @@ -4459,7 +4462,7 @@ static int ioctl_setflags(struct fuse4fs *ff, struct fuse4fs_file_handle *fh,
> > if (err)
> > return translate_error(fs, fh->ino, err);
> >
> > - if (want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > + if (fuse4fs_want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > return -EPERM;
> >
> > ret = set_iflags(&inode, flags);
> > @@ -4508,7 +4511,7 @@ static int ioctl_setversion(struct fuse4fs *ff, struct fuse4fs_file_handle *fh,
> > if (err)
> > return translate_error(fs, fh->ino, err);
> >
> > - if (want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > + if (fuse4fs_want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > return -EPERM;
> >
> > inode.i_generation = generation;
> > @@ -4633,7 +4636,7 @@ static int ioctl_fssetxattr(struct fuse4fs *ff, struct fuse4fs_file_handle *fh,
> > if (err)
> > return translate_error(fs, fh->ino, err);
> >
> > - if (want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > + if (fuse4fs_want_check_owner(ff, ctxt) && inode_uid(inode) != ctxt->uid)
> > return -EPERM;
> >
> > ret = set_xflags(&inode, fsx->fsx_xflags);
> > @@ -4762,7 +4765,7 @@ static int ioctl_shutdown(struct fuse4fs *ff, struct fuse4fs_file_handle *fh,
> > struct fuse_context *ctxt = fuse_get_context();
> > ext2_filsys fs = ff->fs;
> >
> > - if (!is_superuser(ff, ctxt))
> > + if (!fuse4fs_is_superuser(ff, ctxt))
> > return -EPERM;
> >
> > err_printf(ff, "%s.\n", _("shut down requested"));
> > @@ -4884,7 +4887,7 @@ static int fuse4fs_allocate_range(struct fuse4fs *ff,
> > (unsigned long long)len,
> > (unsigned long long)start,
> > (unsigned long long)end);
> > - if (!fs_can_allocate(ff, FUSE4FS_B_TO_FSB(ff, len)))
> > + if (!fuse4fs_can_allocate(ff, FUSE4FS_B_TO_FSB(ff, len)))
> > return -ENOSPC;
> >
> > err = fuse4fs_read_inode(fs, fh->ino, &inode);
> > @@ -4927,9 +4930,9 @@ static int fuse4fs_allocate_range(struct fuse4fs *ff,
> > return err;
> > }
> >
> > -static errcode_t clean_block_middle(struct fuse4fs *ff, ext2_ino_t ino,
> > - struct ext2_inode_large *inode,
> > - off_t offset, off_t len, char **buf)
> > +static errcode_t fuse4fs_zero_middle(struct fuse4fs *ff, ext2_ino_t ino,
> > + struct ext2_inode_large *inode,
> > + off_t offset, off_t len, char **buf)
> > {
> > ext2_filsys fs = ff->fs;
> > blk64_t blk;
> > @@ -4963,9 +4966,9 @@ static errcode_t clean_block_middle(struct fuse4fs *ff, ext2_ino_t ino,
> > return io_channel_write_blk64(fs->io, blk, 1, *buf);
> > }
> >
> > -static errcode_t clean_block_edge(struct fuse4fs *ff, ext2_ino_t ino,
> > - struct ext2_inode_large *inode, off_t offset,
> > - int clean_before, char **buf)
> > +static errcode_t fuse4fs_zero_edge(struct fuse4fs *ff, ext2_ino_t ino,
> > + struct ext2_inode_large *inode, off_t offset,
> > + int clean_before, char **buf)
> > {
> > ext2_filsys fs = ff->fs;
> > blk64_t blk;
> > @@ -5056,13 +5059,13 @@ static int fuse4fs_punch_range(struct fuse4fs *ff,
> >
> > /* Zero everything before the first block and after the last block */
> > if (FUSE4FS_B_TO_FSBT(ff, offset) == FUSE4FS_B_TO_FSBT(ff, offset + len))
> > - err = clean_block_middle(ff, fh->ino, &inode, offset,
> > + err = fuse4fs_zero_middle(ff, fh->ino, &inode, offset,
> > len, &buf);
> > else {
> > - err = clean_block_edge(ff, fh->ino, &inode, offset, 0, &buf);
> > + err = fuse4fs_zero_edge(ff, fh->ino, &inode, offset, 0, &buf);
> > if (!err)
> > - err = clean_block_edge(ff, fh->ino, &inode,
> > - offset + len, 1, &buf);
> > + err = fuse4fs_zero_edge(ff, fh->ino, &inode,
> > + offset + len, 1, &buf);
> > }
> > if (buf)
> > ext2fs_free_mem(&buf);
> >
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