[GFS2] Update ioctl() to new interface

[deliverable/linux.git] / fs / gfs2 / ops_file.c

diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index ac8e1238cb6f7ce1254b96a63ffecdb49f0b606b..db4484a3efccc07add8751ce87911e8acf33525b 100644 (file)
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -21,6 +21,7 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/ext2_fs.h>
 #include <linux/crc32.h>
+#include <linux/iflags.h>
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
 
@@ -536,110 +537,44 @@ static int gfs2_readdir(struct file *file, void *dirent, filldir_t filldir)
        return error;
 }
 
-const struct gfs2_flag_eattr {
-       u32 flag;
-       u32 ext2;
-} gfs2_flag_eattrs[] = {
-       {
-               .flag = GFS2_DIF_IMMUTABLE,
-               .ext2 = EXT2_IMMUTABLE_FL,
-       }, {
-               .flag = GFS2_DIF_APPENDONLY,
-               .ext2 = EXT2_APPEND_FL,
-       }, {
-               .flag = GFS2_DIF_JDATA,
-               .ext2 = EXT2_JOURNAL_DATA_FL,
-       }, {
-               .flag = GFS2_DIF_EXHASH,
-               .ext2 = EXT2_INDEX_FL,
-       }, {
-               .flag = GFS2_DIF_EA_INDIRECT,
-       }, {
-               .flag = GFS2_DIF_DIRECTIO,
-       }, {
-               .flag = GFS2_DIF_NOATIME,
-               .ext2 = EXT2_NOATIME_FL,
-       }, {
-               .flag = GFS2_DIF_SYNC,
-               .ext2 = EXT2_SYNC_FL,
-       }, {
-               .flag = GFS2_DIF_SYSTEM,
-       }, {
-               .flag = GFS2_DIF_TRUNC_IN_PROG,
-       }, {
-               .flag = GFS2_DIF_INHERIT_JDATA,
-       }, {
-               .flag = GFS2_DIF_INHERIT_DIRECTIO,
-       }, {
-       },
+static const u32 iflags_to_gfs2[32] = {
+       [iflag_Sync] = GFS2_DIF_SYNC,
+       [iflag_Immutable] = GFS2_DIF_IMMUTABLE,
+       [iflag_Append] = GFS2_DIF_APPENDONLY,
+       [iflag_NoAtime] = GFS2_DIF_NOATIME,
+       [iflag_Index] = GFS2_DIF_EXHASH,
+       [iflag_JournalData] = GFS2_DIF_JDATA,
+       [iflag_DirectIO] = GFS2_DIF_DIRECTIO,
+       [iflag_InheritDirectIO] = GFS2_DIF_INHERIT_DIRECTIO,
+       [iflag_InheritJdata] = GFS2_DIF_INHERIT_JDATA,
 };
 
-static const struct gfs2_flag_eattr *get_by_ext2(u32 ext2)
-{
-       const struct gfs2_flag_eattr *p = gfs2_flag_eattrs;
-       for(; p->flag; p++) {
-               if (ext2 == p->ext2)
-                       return p;
-       }
-       return NULL;
-}
-
-static const struct gfs2_flag_eattr *get_by_gfs2(u32 gfs2)
-{
-       const struct gfs2_flag_eattr *p = gfs2_flag_eattrs;
-       for(; p->flag; p++) {
-               if (gfs2 == p->flag)
-                       return p;
-       }
-       return NULL;
-}
-
-static u32 gfs2_flags_to_ext2(u32 gfs2)
-{
-       const struct gfs2_flag_eattr *ea;
-       u32 ext2 = 0;
-       u32 mask = 1;
-
-       for(; mask != 0; mask <<=1) {
-               if (mask & gfs2) {
-                       ea = get_by_gfs2(mask);
-                       if (ea)
-                               ext2 |= ea->ext2;
-               }
-       }
-       return ext2;
-}
-
-static int gfs2_flags_from_ext2(u32 *gfs2, u32 ext2)
-{
-       const struct gfs2_flag_eattr *ea;
-       u32 mask = 1;
-
-       for(; mask != 0; mask <<= 1) {
-               if (mask & ext2) {
-                       ea = get_by_ext2(mask);
-                       if (ea == NULL)
-                               return -EINVAL;
-                       *gfs2 |= ea->flag;
-               }
-       }
-       return 0;
-}
+static const u32 gfs2_to_iflags[32] = {
+       [gfs2fl_Sync] = IFLAG_SYNC,
+       [gfs2fl_Immutable] = IFLAG_IMMUTABLE,
+       [gfs2fl_AppendOnly] = IFLAG_APPEND,
+       [gfs2fl_NoAtime] = IFLAG_NOATIME,
+       [gfs2fl_ExHash] = IFLAG_INDEX,
+       [gfs2fl_Jdata] = IFLAG_JOURNAL_DATA,
+       [gfs2fl_Directio] = IFLAG_DIRECTIO,
+       [gfs2fl_InheritDirectio] = IFLAG_INHERITDIRECTIO,
+       [gfs2fl_InheritJdata] = IFLAG_INHERITJDATA,
+};
 
-static int get_ext2_flags(struct inode *inode, u32 __user *ptr)
+static int gfs2_get_flags(struct inode *inode, u32 __user *ptr)
 {
        struct gfs2_inode *ip = inode->u.generic_ip;
        struct gfs2_holder gh;
        int error;
-       u32 ext2;
+       u32 iflags;
 
        gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh);
        error = gfs2_glock_nq_m_atime(1, &gh);
        if (error)
                return error;
 
-       ext2 = gfs2_flags_to_ext2(ip->i_di.di_flags);
-       if (put_user(ext2, ptr))
+       iflags = iflags_cvt(gfs2_to_iflags, ip->i_di.di_flags);
+       if (put_user(iflags, ptr))
                error = -EFAULT;
 
        gfs2_glock_dq_m(1, &gh);
@@ -665,7 +600,7 @@ static int get_ext2_flags(struct inode *inode, u32 __user *ptr)
  * @mask: Indicates which flags are valid
  *
  */
-static int gfs2_set_flags(struct inode *inode, u32 flags, u32 mask)
+static int do_gfs2_set_flags(struct inode *inode, u32 flags, u32 mask)
 {
        struct gfs2_inode *ip = inode->u.generic_ip;
        struct buffer_head *bh;
@@ -717,24 +652,23 @@ out:
        return error;
 }
 
-static int set_ext2_flags(struct inode *inode, u32 __user *ptr)
+static int gfs2_set_flags(struct inode *inode, u32 __user *ptr)
 {
-       u32 ext2, gfs2;
-       if (get_user(ext2, ptr))
+       u32 iflags, gfsflags;
+       if (get_user(iflags, ptr))
                return -EFAULT;
-       if (gfs2_flags_from_ext2(&gfs2, ext2))
-               return -EINVAL;
-       return gfs2_set_flags(inode, gfs2, ~0);
+       gfsflags = iflags_cvt(iflags_to_gfs2, iflags);
+       return do_gfs2_set_flags(inode, gfsflags, ~0);
 }
 
 int gfs2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
               unsigned long arg)
 {
        switch(cmd) {
-       case EXT2_IOC_GETFLAGS:
-               return get_ext2_flags(inode, (u32 __user *)arg);
-       case EXT2_IOC_SETFLAGS:
-               return set_ext2_flags(inode, (u32 __user *)arg);
+       case IFLAGS_GET_IOC:
+               return gfs2_get_flags(inode, (u32 __user *)arg);
+       case IFLAGS_SET_IOC:
+               return gfs2_set_flags(inode, (u32 __user *)arg);
        }
        return -ENOTTY;
 }