^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/jfs/ioctl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006 Herbert Poetzl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * adapted from Remy Card's ext2/ioctl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/current.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "jfs_filsys.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "jfs_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "jfs_incore.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "jfs_dinode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "jfs_inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "jfs_dmap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "jfs_discard.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) long jfs_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) long ext2_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) } jfs_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {JFS_NOATIME_FL, FS_NOATIME_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {JFS_DIRSYNC_FL, FS_DIRSYNC_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {JFS_SYNC_FL, FS_SYNC_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {JFS_SECRM_FL, FS_SECRM_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {JFS_UNRM_FL, FS_UNRM_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {JFS_APPEND_FL, FS_APPEND_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {JFS_IMMUTABLE_FL, FS_IMMUTABLE_FL},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {0, 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static long jfs_map_ext2(unsigned long flags, int from)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int index=0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) long mapped=0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) while (jfs_map[index].jfs_flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (from) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (jfs_map[index].ext2_flag & flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) mapped |= jfs_map[index].jfs_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (jfs_map[index].jfs_flag & flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) mapped |= jfs_map[index].ext2_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return mapped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct inode *inode = file_inode(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct jfs_inode_info *jfs_inode = JFS_IP(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) unsigned int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) case JFS_IOC_GETFLAGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) flags = jfs_map_ext2(flags, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return put_user(flags, (int __user *) arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) case JFS_IOC_SETFLAGS: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) unsigned int oldflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) err = mnt_want_write_file(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (!inode_owner_or_capable(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) err = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) goto setflags_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (get_user(flags, (int __user *) arg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) goto setflags_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) flags = jfs_map_ext2(flags, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) flags &= ~JFS_DIRSYNC_FL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* Is it quota file? Do not allow user to mess with it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (IS_NOQUOTA(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) err = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) goto setflags_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* Lock against other parallel changes of flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) inode_lock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) oldflags = jfs_map_ext2(jfs_inode->mode2 & JFS_FL_USER_VISIBLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) inode_unlock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) goto setflags_out;
^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) flags = flags & JFS_FL_USER_MODIFIABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) flags |= jfs_inode->mode2 & ~JFS_FL_USER_MODIFIABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) jfs_inode->mode2 = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) jfs_set_inode_flags(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) inode_unlock(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mark_inode_dirty(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) setflags_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) mnt_drop_write_file(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) case FITRIM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct super_block *sb = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct request_queue *q = bdev_get_queue(sb->s_bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct fstrim_range range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) s64 ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!capable(CAP_SYS_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (!blk_queue_discard(q)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) jfs_warn("FITRIM not supported on device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (copy_from_user(&range, (struct fstrim_range __user *)arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) sizeof(range)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) range.minlen = max_t(unsigned int, range.minlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) q->limits.discard_granularity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = jfs_ioc_trim(inode, &range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (copy_to_user((struct fstrim_range __user *)arg, &range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) sizeof(range)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) long jfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /* While these ioctl numbers defined with 'long' and have different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * numbers than the 64bit ABI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * the actual implementation only deals with ints and is compatible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) case JFS_IOC_GETFLAGS32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) cmd = JFS_IOC_GETFLAGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case JFS_IOC_SETFLAGS32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) cmd = JFS_IOC_SETFLAGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return jfs_ioctl(filp, cmd, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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