^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * fs/anon_inodes.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Thanks to Arnd Bergmann for code review and suggestions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * More changes for Thomas Gleixner suggestions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/magic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/anon_inodes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/pseudo_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct vfsmount *anon_inode_mnt __read_mostly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static struct inode *anon_inode_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * anon_inodefs_dname() is called from d_path().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static char *anon_inodefs_dname(struct dentry *dentry, char *buffer, int buflen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return dynamic_dname(dentry, buffer, buflen, "anon_inode:%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) dentry->d_name.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static const struct dentry_operations anon_inodefs_dentry_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .d_dname = anon_inodefs_dname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int anon_inodefs_init_fs_context(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct pseudo_fs_context *ctx = init_pseudo(fc, ANON_INODE_FS_MAGIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (!ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ctx->dops = &anon_inodefs_dentry_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static struct file_system_type anon_inode_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .name = "anon_inodefs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .init_fs_context = anon_inodefs_init_fs_context,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .kill_sb = kill_anon_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static struct inode *anon_inode_make_secure_inode(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) const struct inode *context_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) const struct qstr qname = QSTR_INIT(name, strlen(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) inode = alloc_anon_inode(anon_inode_mnt->mnt_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (IS_ERR(inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) inode->i_flags &= ~S_PRIVATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) error = security_inode_init_security_anon(inode, &qname, context_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return ERR_PTR(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static struct file *__anon_inode_getfile(const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) const struct file_operations *fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void *priv, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) const struct inode *context_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) bool secure)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct file *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (fops->owner && !try_module_get(fops->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return ERR_PTR(-ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (secure) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) inode = anon_inode_make_secure_inode(name, context_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (IS_ERR(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) file = ERR_CAST(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) inode = anon_inode_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (IS_ERR(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) file = ERR_PTR(-ENODEV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * We know the anon_inode inode count is always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * greater than zero, so ihold() is safe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ihold(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) file = alloc_file_pseudo(inode, anon_inode_mnt, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) flags & (O_ACCMODE | O_NONBLOCK), fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (IS_ERR(file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) goto err_iput;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) file->f_mapping = inode->i_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) file->private_data = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) err_iput:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) module_put(fops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * anon_inode_getfile - creates a new file instance by hooking it up to an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * anonymous inode, and a dentry that describe the "class"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * of the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @name: [in] name of the "class" of the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @fops: [in] file operations for the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @priv: [in] private data for the new file (will be file's private_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @flags: [in] flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Creates a new file by hooking it on a single inode. This is useful for files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * that do not need to have a full-fledged inode in order to operate correctly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * All the files created with anon_inode_getfile() will share a single inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * hence saving memory and avoiding code duplication for the file/inode/dentry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * setup. Returns the newly created file* or an error pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct file *anon_inode_getfile(const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) const struct file_operations *fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) void *priv, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return __anon_inode_getfile(name, fops, priv, flags, NULL, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) EXPORT_SYMBOL_GPL(anon_inode_getfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static int __anon_inode_getfd(const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) const struct file_operations *fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) void *priv, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) const struct inode *context_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) bool secure)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int error, fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct file *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) error = get_unused_fd_flags(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (error < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) fd = error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) file = __anon_inode_getfile(name, fops, priv, flags, context_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) secure);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (IS_ERR(file)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) error = PTR_ERR(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) goto err_put_unused_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) fd_install(fd, file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) err_put_unused_fd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) put_unused_fd(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * anon_inode_getfd - creates a new file instance by hooking it up to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * an anonymous inode and a dentry that describe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * the "class" of the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @name: [in] name of the "class" of the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @fops: [in] file operations for the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @priv: [in] private data for the new file (will be file's private_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @flags: [in] flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * Creates a new file by hooking it on a single inode. This is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * useful for files that do not need to have a full-fledged inode in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * order to operate correctly. All the files created with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * anon_inode_getfd() will use the same singleton inode, reducing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * memory use and avoiding code duplication for the file/inode/dentry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * setup. Returns a newly created file descriptor or an error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int anon_inode_getfd(const char *name, const struct file_operations *fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) void *priv, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return __anon_inode_getfd(name, fops, priv, flags, NULL, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) EXPORT_SYMBOL_GPL(anon_inode_getfd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * anon_inode_getfd_secure - Like anon_inode_getfd(), but creates a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * !S_PRIVATE anon inode rather than reuse the singleton anon inode, and calls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * the inode_init_security_anon() LSM hook. This allows the inode to have its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * own security context and for a LSM to reject creation of the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @name: [in] name of the "class" of the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * @fops: [in] file operations for the new file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * @priv: [in] private data for the new file (will be file's private_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * @flags: [in] flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * @context_inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * [in] the logical relationship with the new inode (optional)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * The LSM may use @context_inode in inode_init_security_anon(), but a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * reference to it is not held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) int anon_inode_getfd_secure(const char *name, const struct file_operations *fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) void *priv, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const struct inode *context_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return __anon_inode_getfd(name, fops, priv, flags, context_inode, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) EXPORT_SYMBOL_GPL(anon_inode_getfd_secure);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int __init anon_inode_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) anon_inode_mnt = kern_mount(&anon_inode_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (IS_ERR(anon_inode_mnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) panic("anon_inode_init() kernel mount failed (%ld)\n", PTR_ERR(anon_inode_mnt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) anon_inode_inode = alloc_anon_inode(anon_inode_mnt->mnt_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (IS_ERR(anon_inode_inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) panic("anon_inode_init() inode allocation failed (%ld)\n", PTR_ERR(anon_inode_inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) fs_initcall(anon_inode_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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