diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-20 10:32:33 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-20 10:32:33 -0800 |
commit | 88dcb91177cfa5b26143a29074389a2aa259c7cf (patch) | |
tree | 4906b9712a797b5805aa00fc0f766b27b7432005 /fs/jfs/ioctl.c | |
parent | c7cace6437b2f8bbab5ef05b465738283a9a100a (diff) | |
parent | c5111f504d2a9b0d258d7c4752b4093523315989 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
JFS: add uid, gid, and umask mount options
JFS: Take logsync lock before testing mp->lsn
JFS: kzalloc conversion
JFS: Add missing file from fa3241d24cf1182b0ffb6e4d412c3bc2a2ab7bf6
JFS: Use the kthread_ API
JFS: Fix regression. fsck complains if symlinks do not have INLINEEA attribute
JFS: ext2 inode attributes for jfs
JFS: semaphore to mutex conversion.
JFS: make buddy table static
JFS: Add back directory i_size calculations for legacy partitions
Diffstat (limited to 'fs/jfs/ioctl.c')
-rw-r--r-- | fs/jfs/ioctl.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c new file mode 100644 index 00000000000..67b3774820e --- /dev/null +++ b/fs/jfs/ioctl.c @@ -0,0 +1,107 @@ +/* + * linux/fs/jfs/ioctl.c + * + * Copyright (C) 2006 Herbert Poetzl + * adapted from Remy Card's ext2/ioctl.c + */ + +#include <linux/fs.h> +#include <linux/ext2_fs.h> +#include <linux/ctype.h> +#include <linux/capability.h> +#include <linux/time.h> +#include <asm/current.h> +#include <asm/uaccess.h> + +#include "jfs_incore.h" +#include "jfs_dinode.h" +#include "jfs_inode.h" + + +static struct { + long jfs_flag; + long ext2_flag; +} jfs_map[] = { + {JFS_NOATIME_FL, EXT2_NOATIME_FL}, + {JFS_DIRSYNC_FL, EXT2_DIRSYNC_FL}, + {JFS_SYNC_FL, EXT2_SYNC_FL}, + {JFS_SECRM_FL, EXT2_SECRM_FL}, + {JFS_UNRM_FL, EXT2_UNRM_FL}, + {JFS_APPEND_FL, EXT2_APPEND_FL}, + {JFS_IMMUTABLE_FL, EXT2_IMMUTABLE_FL}, + {0, 0}, +}; + +static long jfs_map_ext2(unsigned long flags, int from) +{ + int index=0; + long mapped=0; + + while (jfs_map[index].jfs_flag) { + if (from) { + if (jfs_map[index].ext2_flag & flags) + mapped |= jfs_map[index].jfs_flag; + } else { + if (jfs_map[index].jfs_flag & flags) + mapped |= jfs_map[index].ext2_flag; + } + index++; + } + return mapped; +} + + +int jfs_ioctl(struct inode * inode, struct file * filp, unsigned int cmd, + unsigned long arg) +{ + struct jfs_inode_info *jfs_inode = JFS_IP(inode); + unsigned int flags; + + switch (cmd) { + case JFS_IOC_GETFLAGS: + flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE; + flags = jfs_map_ext2(flags, 0); + return put_user(flags, (int __user *) arg); + case JFS_IOC_SETFLAGS: { + unsigned int oldflags; + + if (IS_RDONLY(inode)) + return -EROFS; + + if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER)) + return -EACCES; + + if (get_user(flags, (int __user *) arg)) + return -EFAULT; + + flags = jfs_map_ext2(flags, 1); + if (!S_ISDIR(inode->i_mode)) + flags &= ~JFS_DIRSYNC_FL; + + oldflags = jfs_inode->mode2; + + /* + * The IMMUTABLE and APPEND_ONLY flags can only be changed by + * the relevant capability. + */ + if ((oldflags & JFS_IMMUTABLE_FL) || + ((flags ^ oldflags) & + (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) { + if (!capable(CAP_LINUX_IMMUTABLE)) + return -EPERM; + } + + flags = flags & JFS_FL_USER_MODIFIABLE; + flags |= oldflags & ~JFS_FL_USER_MODIFIABLE; + jfs_inode->mode2 = flags; + + jfs_set_inode_flags(inode); + inode->i_ctime = CURRENT_TIME_SEC; + mark_inode_dirty(inode); + return 0; + } + default: + return -ENOTTY; + } +} + |