diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/ocfs2/ioctl.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/ocfs2/ioctl.c | 1030 |
1 files changed, 0 insertions, 1030 deletions
diff --git a/ANDROID_3.4.5/fs/ocfs2/ioctl.c b/ANDROID_3.4.5/fs/ocfs2/ioctl.c deleted file mode 100644 index a1a1bfd6..00000000 --- a/ANDROID_3.4.5/fs/ocfs2/ioctl.c +++ /dev/null @@ -1,1030 +0,0 @@ -/* - * linux/fs/ocfs2/ioctl.c - * - * Copyright (C) 2006 Herbert Poetzl - * adapted from Remy Card's ext2/ioctl.c - */ - -#include <linux/fs.h> -#include <linux/mount.h> -#include <linux/compat.h> - -#include <cluster/masklog.h> - -#include "ocfs2.h" -#include "alloc.h" -#include "dlmglue.h" -#include "file.h" -#include "inode.h" -#include "journal.h" - -#include "ocfs2_fs.h" -#include "ioctl.h" -#include "resize.h" -#include "refcounttree.h" -#include "sysfile.h" -#include "dir.h" -#include "buffer_head_io.h" -#include "suballoc.h" -#include "move_extents.h" - -#define o2info_from_user(a, b) \ - copy_from_user(&(a), (b), sizeof(a)) -#define o2info_to_user(a, b) \ - copy_to_user((typeof(a) __user *)b, &(a), sizeof(a)) - -/* - * This call is void because we are already reporting an error that may - * be -EFAULT. The error will be returned from the ioctl(2) call. It's - * just a best-effort to tell userspace that this request caused the error. - */ -static inline void o2info_set_request_error(struct ocfs2_info_request *kreq, - struct ocfs2_info_request __user *req) -{ - kreq->ir_flags |= OCFS2_INFO_FL_ERROR; - (void)put_user(kreq->ir_flags, (__u32 __user *)&(req->ir_flags)); -} - -static inline void o2info_set_request_filled(struct ocfs2_info_request *req) -{ - req->ir_flags |= OCFS2_INFO_FL_FILLED; -} - -static inline void o2info_clear_request_filled(struct ocfs2_info_request *req) -{ - req->ir_flags &= ~OCFS2_INFO_FL_FILLED; -} - -static inline int o2info_coherent(struct ocfs2_info_request *req) -{ - return (!(req->ir_flags & OCFS2_INFO_FL_NON_COHERENT)); -} - -static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags) -{ - int status; - - status = ocfs2_inode_lock(inode, NULL, 0); - if (status < 0) { - mlog_errno(status); - return status; - } - ocfs2_get_inode_flags(OCFS2_I(inode)); - *flags = OCFS2_I(inode)->ip_attr; - ocfs2_inode_unlock(inode, 0); - - return status; -} - -static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags, - unsigned mask) -{ - struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode); - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - handle_t *handle = NULL; - struct buffer_head *bh = NULL; - unsigned oldflags; - int status; - - mutex_lock(&inode->i_mutex); - - status = ocfs2_inode_lock(inode, &bh, 1); - if (status < 0) { - mlog_errno(status); - goto bail; - } - - status = -EACCES; - if (!inode_owner_or_capable(inode)) - goto bail_unlock; - - if (!S_ISDIR(inode->i_mode)) - flags &= ~OCFS2_DIRSYNC_FL; - - handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); - if (IS_ERR(handle)) { - status = PTR_ERR(handle); - mlog_errno(status); - goto bail_unlock; - } - - oldflags = ocfs2_inode->ip_attr; - flags = flags & mask; - flags |= oldflags & ~mask; - - /* - * The IMMUTABLE and APPEND_ONLY flags can only be changed by - * the relevant capability. - */ - status = -EPERM; - if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) & - (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) { - if (!capable(CAP_LINUX_IMMUTABLE)) - goto bail_commit; - } - - ocfs2_inode->ip_attr = flags; - ocfs2_set_inode_flags(inode); - - status = ocfs2_mark_inode_dirty(handle, inode, bh); - if (status < 0) - mlog_errno(status); - -bail_commit: - ocfs2_commit_trans(osb, handle); -bail_unlock: - ocfs2_inode_unlock(inode, 1); -bail: - mutex_unlock(&inode->i_mutex); - - brelse(bh); - - return status; -} - -int ocfs2_info_handle_blocksize(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_blocksize oib; - - if (o2info_from_user(oib, req)) - goto bail; - - oib.ib_blocksize = inode->i_sb->s_blocksize; - - o2info_set_request_filled(&oib.ib_req); - - if (o2info_to_user(oib, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oib.ib_req, req); - - return status; -} - -int ocfs2_info_handle_clustersize(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_clustersize oic; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oic, req)) - goto bail; - - oic.ic_clustersize = osb->s_clustersize; - - o2info_set_request_filled(&oic.ic_req); - - if (o2info_to_user(oic, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oic.ic_req, req); - - return status; -} - -int ocfs2_info_handle_maxslots(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_maxslots oim; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oim, req)) - goto bail; - - oim.im_max_slots = osb->max_slots; - - o2info_set_request_filled(&oim.im_req); - - if (o2info_to_user(oim, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oim.im_req, req); - - return status; -} - -int ocfs2_info_handle_label(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_label oil; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oil, req)) - goto bail; - - memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN); - - o2info_set_request_filled(&oil.il_req); - - if (o2info_to_user(oil, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oil.il_req, req); - - return status; -} - -int ocfs2_info_handle_uuid(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_uuid oiu; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oiu, req)) - goto bail; - - memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1); - - o2info_set_request_filled(&oiu.iu_req); - - if (o2info_to_user(oiu, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oiu.iu_req, req); - - return status; -} - -int ocfs2_info_handle_fs_features(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_fs_features oif; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oif, req)) - goto bail; - - oif.if_compat_features = osb->s_feature_compat; - oif.if_incompat_features = osb->s_feature_incompat; - oif.if_ro_compat_features = osb->s_feature_ro_compat; - - o2info_set_request_filled(&oif.if_req); - - if (o2info_to_user(oif, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oif.if_req, req); - - return status; -} - -int ocfs2_info_handle_journal_size(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_journal_size oij; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - - if (o2info_from_user(oij, req)) - goto bail; - - oij.ij_journal_size = osb->journal->j_inode->i_size; - - o2info_set_request_filled(&oij.ij_req); - - if (o2info_to_user(oij, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oij.ij_req, req); - - return status; -} - -int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, - struct inode *inode_alloc, u64 blkno, - struct ocfs2_info_freeinode *fi, u32 slot) -{ - int status = 0, unlock = 0; - - struct buffer_head *bh = NULL; - struct ocfs2_dinode *dinode_alloc = NULL; - - if (inode_alloc) - mutex_lock(&inode_alloc->i_mutex); - - if (o2info_coherent(&fi->ifi_req)) { - status = ocfs2_inode_lock(inode_alloc, &bh, 0); - if (status < 0) { - mlog_errno(status); - goto bail; - } - unlock = 1; - } else { - status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); - if (status < 0) { - mlog_errno(status); - goto bail; - } - } - - dinode_alloc = (struct ocfs2_dinode *)bh->b_data; - - fi->ifi_stat[slot].lfi_total = - le32_to_cpu(dinode_alloc->id1.bitmap1.i_total); - fi->ifi_stat[slot].lfi_free = - le32_to_cpu(dinode_alloc->id1.bitmap1.i_total) - - le32_to_cpu(dinode_alloc->id1.bitmap1.i_used); - -bail: - if (unlock) - ocfs2_inode_unlock(inode_alloc, 0); - - if (inode_alloc) - mutex_unlock(&inode_alloc->i_mutex); - - brelse(bh); - - return status; -} - -int ocfs2_info_handle_freeinode(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - u32 i; - u64 blkno = -1; - char namebuf[40]; - int status = -EFAULT, type = INODE_ALLOC_SYSTEM_INODE; - struct ocfs2_info_freeinode *oifi = NULL; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct inode *inode_alloc = NULL; - - oifi = kzalloc(sizeof(struct ocfs2_info_freeinode), GFP_KERNEL); - if (!oifi) { - status = -ENOMEM; - mlog_errno(status); - goto out_err; - } - - if (o2info_from_user(*oifi, req)) - goto bail; - - oifi->ifi_slotnum = osb->max_slots; - - for (i = 0; i < oifi->ifi_slotnum; i++) { - if (o2info_coherent(&oifi->ifi_req)) { - inode_alloc = ocfs2_get_system_file_inode(osb, type, i); - if (!inode_alloc) { - mlog(ML_ERROR, "unable to get alloc inode in " - "slot %u\n", i); - status = -EIO; - goto bail; - } - } else { - ocfs2_sprintf_system_inode_name(namebuf, - sizeof(namebuf), - type, i); - status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, - namebuf, - strlen(namebuf), - &blkno); - if (status < 0) { - status = -ENOENT; - goto bail; - } - } - - status = ocfs2_info_scan_inode_alloc(osb, inode_alloc, blkno, oifi, i); - if (status < 0) - goto bail; - - iput(inode_alloc); - inode_alloc = NULL; - } - - o2info_set_request_filled(&oifi->ifi_req); - - if (o2info_to_user(*oifi, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oifi->ifi_req, req); - - kfree(oifi); -out_err: - return status; -} - -static void o2ffg_update_histogram(struct ocfs2_info_free_chunk_list *hist, - unsigned int chunksize) -{ - int index; - - index = __ilog2_u32(chunksize); - if (index >= OCFS2_INFO_MAX_HIST) - index = OCFS2_INFO_MAX_HIST - 1; - - hist->fc_chunks[index]++; - hist->fc_clusters[index] += chunksize; -} - -static void o2ffg_update_stats(struct ocfs2_info_freefrag_stats *stats, - unsigned int chunksize) -{ - if (chunksize > stats->ffs_max) - stats->ffs_max = chunksize; - - if (chunksize < stats->ffs_min) - stats->ffs_min = chunksize; - - stats->ffs_avg += chunksize; - stats->ffs_free_chunks_real++; -} - -void ocfs2_info_update_ffg(struct ocfs2_info_freefrag *ffg, - unsigned int chunksize) -{ - o2ffg_update_histogram(&(ffg->iff_ffs.ffs_fc_hist), chunksize); - o2ffg_update_stats(&(ffg->iff_ffs), chunksize); -} - -int ocfs2_info_freefrag_scan_chain(struct ocfs2_super *osb, - struct inode *gb_inode, - struct ocfs2_dinode *gb_dinode, - struct ocfs2_chain_rec *rec, - struct ocfs2_info_freefrag *ffg, - u32 chunks_in_group) -{ - int status = 0, used; - u64 blkno; - - struct buffer_head *bh = NULL; - struct ocfs2_group_desc *bg = NULL; - - unsigned int max_bits, num_clusters; - unsigned int offset = 0, cluster, chunk; - unsigned int chunk_free, last_chunksize = 0; - - if (!le32_to_cpu(rec->c_free)) - goto bail; - - do { - if (!bg) - blkno = le64_to_cpu(rec->c_blkno); - else - blkno = le64_to_cpu(bg->bg_next_group); - - if (bh) { - brelse(bh); - bh = NULL; - } - - if (o2info_coherent(&ffg->iff_req)) - status = ocfs2_read_group_descriptor(gb_inode, - gb_dinode, - blkno, &bh); - else - status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); - - if (status < 0) { - mlog(ML_ERROR, "Can't read the group descriptor # " - "%llu from device.", (unsigned long long)blkno); - status = -EIO; - goto bail; - } - - bg = (struct ocfs2_group_desc *)bh->b_data; - - if (!le16_to_cpu(bg->bg_free_bits_count)) - continue; - - max_bits = le16_to_cpu(bg->bg_bits); - offset = 0; - - for (chunk = 0; chunk < chunks_in_group; chunk++) { - /* - * last chunk may be not an entire one. - */ - if ((offset + ffg->iff_chunksize) > max_bits) - num_clusters = max_bits - offset; - else - num_clusters = ffg->iff_chunksize; - - chunk_free = 0; - for (cluster = 0; cluster < num_clusters; cluster++) { - used = ocfs2_test_bit(offset, - (unsigned long *)bg->bg_bitmap); - /* - * - chunk_free counts free clusters in #N chunk. - * - last_chunksize records the size(in) clusters - * for the last real free chunk being counted. - */ - if (!used) { - last_chunksize++; - chunk_free++; - } - - if (used && last_chunksize) { - ocfs2_info_update_ffg(ffg, - last_chunksize); - last_chunksize = 0; - } - - offset++; - } - - if (chunk_free == ffg->iff_chunksize) - ffg->iff_ffs.ffs_free_chunks++; - } - - /* - * need to update the info for last free chunk. - */ - if (last_chunksize) - ocfs2_info_update_ffg(ffg, last_chunksize); - - } while (le64_to_cpu(bg->bg_next_group)); - -bail: - brelse(bh); - - return status; -} - -int ocfs2_info_freefrag_scan_bitmap(struct ocfs2_super *osb, - struct inode *gb_inode, u64 blkno, - struct ocfs2_info_freefrag *ffg) -{ - u32 chunks_in_group; - int status = 0, unlock = 0, i; - - struct buffer_head *bh = NULL; - struct ocfs2_chain_list *cl = NULL; - struct ocfs2_chain_rec *rec = NULL; - struct ocfs2_dinode *gb_dinode = NULL; - - if (gb_inode) - mutex_lock(&gb_inode->i_mutex); - - if (o2info_coherent(&ffg->iff_req)) { - status = ocfs2_inode_lock(gb_inode, &bh, 0); - if (status < 0) { - mlog_errno(status); - goto bail; - } - unlock = 1; - } else { - status = ocfs2_read_blocks_sync(osb, blkno, 1, &bh); - if (status < 0) { - mlog_errno(status); - goto bail; - } - } - - gb_dinode = (struct ocfs2_dinode *)bh->b_data; - cl = &(gb_dinode->id2.i_chain); - - /* - * Chunksize(in) clusters from userspace should be - * less than clusters in a group. - */ - if (ffg->iff_chunksize > le16_to_cpu(cl->cl_cpg)) { - status = -EINVAL; - goto bail; - } - - memset(&ffg->iff_ffs, 0, sizeof(struct ocfs2_info_freefrag_stats)); - - ffg->iff_ffs.ffs_min = ~0U; - ffg->iff_ffs.ffs_clusters = - le32_to_cpu(gb_dinode->id1.bitmap1.i_total); - ffg->iff_ffs.ffs_free_clusters = ffg->iff_ffs.ffs_clusters - - le32_to_cpu(gb_dinode->id1.bitmap1.i_used); - - chunks_in_group = le16_to_cpu(cl->cl_cpg) / ffg->iff_chunksize + 1; - - for (i = 0; i < le16_to_cpu(cl->cl_next_free_rec); i++) { - rec = &(cl->cl_recs[i]); - status = ocfs2_info_freefrag_scan_chain(osb, gb_inode, - gb_dinode, - rec, ffg, - chunks_in_group); - if (status) - goto bail; - } - - if (ffg->iff_ffs.ffs_free_chunks_real) - ffg->iff_ffs.ffs_avg = (ffg->iff_ffs.ffs_avg / - ffg->iff_ffs.ffs_free_chunks_real); -bail: - if (unlock) - ocfs2_inode_unlock(gb_inode, 0); - - if (gb_inode) - mutex_unlock(&gb_inode->i_mutex); - - if (gb_inode) - iput(gb_inode); - - brelse(bh); - - return status; -} - -int ocfs2_info_handle_freefrag(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - u64 blkno = -1; - char namebuf[40]; - int status = -EFAULT, type = GLOBAL_BITMAP_SYSTEM_INODE; - - struct ocfs2_info_freefrag *oiff; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct inode *gb_inode = NULL; - - oiff = kzalloc(sizeof(struct ocfs2_info_freefrag), GFP_KERNEL); - if (!oiff) { - status = -ENOMEM; - mlog_errno(status); - goto out_err; - } - - if (o2info_from_user(*oiff, req)) - goto bail; - /* - * chunksize from userspace should be power of 2. - */ - if ((oiff->iff_chunksize & (oiff->iff_chunksize - 1)) || - (!oiff->iff_chunksize)) { - status = -EINVAL; - goto bail; - } - - if (o2info_coherent(&oiff->iff_req)) { - gb_inode = ocfs2_get_system_file_inode(osb, type, - OCFS2_INVALID_SLOT); - if (!gb_inode) { - mlog(ML_ERROR, "unable to get global_bitmap inode\n"); - status = -EIO; - goto bail; - } - } else { - ocfs2_sprintf_system_inode_name(namebuf, sizeof(namebuf), type, - OCFS2_INVALID_SLOT); - status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, - namebuf, - strlen(namebuf), - &blkno); - if (status < 0) { - status = -ENOENT; - goto bail; - } - } - - status = ocfs2_info_freefrag_scan_bitmap(osb, gb_inode, blkno, oiff); - if (status < 0) - goto bail; - - o2info_set_request_filled(&oiff->iff_req); - - if (o2info_to_user(*oiff, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oiff->iff_req, req); - - kfree(oiff); -out_err: - return status; -} - -int ocfs2_info_handle_unknown(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_request oir; - - if (o2info_from_user(oir, req)) - goto bail; - - o2info_clear_request_filled(&oir); - - if (o2info_to_user(oir, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oir, req); - - return status; -} - -/* - * Validate and distinguish OCFS2_IOC_INFO requests. - * - * - validate the magic number. - * - distinguish different requests. - * - validate size of different requests. - */ -int ocfs2_info_handle_request(struct inode *inode, - struct ocfs2_info_request __user *req) -{ - int status = -EFAULT; - struct ocfs2_info_request oir; - - if (o2info_from_user(oir, req)) - goto bail; - - status = -EINVAL; - if (oir.ir_magic != OCFS2_INFO_MAGIC) - goto bail; - - switch (oir.ir_code) { - case OCFS2_INFO_BLOCKSIZE: - if (oir.ir_size == sizeof(struct ocfs2_info_blocksize)) - status = ocfs2_info_handle_blocksize(inode, req); - break; - case OCFS2_INFO_CLUSTERSIZE: - if (oir.ir_size == sizeof(struct ocfs2_info_clustersize)) - status = ocfs2_info_handle_clustersize(inode, req); - break; - case OCFS2_INFO_MAXSLOTS: - if (oir.ir_size == sizeof(struct ocfs2_info_maxslots)) - status = ocfs2_info_handle_maxslots(inode, req); - break; - case OCFS2_INFO_LABEL: - if (oir.ir_size == sizeof(struct ocfs2_info_label)) - status = ocfs2_info_handle_label(inode, req); - break; - case OCFS2_INFO_UUID: - if (oir.ir_size == sizeof(struct ocfs2_info_uuid)) - status = ocfs2_info_handle_uuid(inode, req); - break; - case OCFS2_INFO_FS_FEATURES: - if (oir.ir_size == sizeof(struct ocfs2_info_fs_features)) - status = ocfs2_info_handle_fs_features(inode, req); - break; - case OCFS2_INFO_JOURNAL_SIZE: - if (oir.ir_size == sizeof(struct ocfs2_info_journal_size)) - status = ocfs2_info_handle_journal_size(inode, req); - break; - case OCFS2_INFO_FREEINODE: - if (oir.ir_size == sizeof(struct ocfs2_info_freeinode)) - status = ocfs2_info_handle_freeinode(inode, req); - break; - case OCFS2_INFO_FREEFRAG: - if (oir.ir_size == sizeof(struct ocfs2_info_freefrag)) - status = ocfs2_info_handle_freefrag(inode, req); - break; - default: - status = ocfs2_info_handle_unknown(inode, req); - break; - } - -bail: - return status; -} - -int ocfs2_get_request_ptr(struct ocfs2_info *info, int idx, - u64 *req_addr, int compat_flag) -{ - int status = -EFAULT; - u64 __user *bp = NULL; - - if (compat_flag) { -#ifdef CONFIG_COMPAT - /* - * pointer bp stores the base address of a pointers array, - * which collects all addresses of separate request. - */ - bp = (u64 __user *)(unsigned long)compat_ptr(info->oi_requests); -#else - BUG(); -#endif - } else - bp = (u64 __user *)(unsigned long)(info->oi_requests); - - if (o2info_from_user(*req_addr, bp + idx)) - goto bail; - - status = 0; -bail: - return status; -} - -/* - * OCFS2_IOC_INFO handles an array of requests passed from userspace. - * - * ocfs2_info_handle() recevies a large info aggregation, grab and - * validate the request count from header, then break it into small - * pieces, later specific handlers can handle them one by one. - * - * Idea here is to make each separate request small enough to ensure - * a better backward&forward compatibility, since a small piece of - * request will be less likely to be broken if disk layout get changed. - */ -int ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info, - int compat_flag) -{ - int i, status = 0; - u64 req_addr; - struct ocfs2_info_request __user *reqp; - - if ((info->oi_count > OCFS2_INFO_MAX_REQUEST) || - (!info->oi_requests)) { - status = -EINVAL; - goto bail; - } - - for (i = 0; i < info->oi_count; i++) { - - status = ocfs2_get_request_ptr(info, i, &req_addr, compat_flag); - if (status) - break; - - reqp = (struct ocfs2_info_request *)(unsigned long)req_addr; - if (!reqp) { - status = -EINVAL; - goto bail; - } - - status = ocfs2_info_handle_request(inode, reqp); - if (status) - break; - } - -bail: - return status; -} - -long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - struct inode *inode = filp->f_path.dentry->d_inode; - unsigned int flags; - int new_clusters; - int status; - struct ocfs2_space_resv sr; - struct ocfs2_new_group_input input; - struct reflink_arguments args; - const char *old_path, *new_path; - bool preserve; - struct ocfs2_info info; - - switch (cmd) { - case OCFS2_IOC_GETFLAGS: - status = ocfs2_get_inode_attr(inode, &flags); - if (status < 0) - return status; - - flags &= OCFS2_FL_VISIBLE; - return put_user(flags, (int __user *) arg); - case OCFS2_IOC_SETFLAGS: - if (get_user(flags, (int __user *) arg)) - return -EFAULT; - - status = mnt_want_write_file(filp); - if (status) - return status; - status = ocfs2_set_inode_attr(inode, flags, - OCFS2_FL_MODIFIABLE); - mnt_drop_write_file(filp); - return status; - case OCFS2_IOC_RESVSP: - case OCFS2_IOC_RESVSP64: - case OCFS2_IOC_UNRESVSP: - case OCFS2_IOC_UNRESVSP64: - if (copy_from_user(&sr, (int __user *) arg, sizeof(sr))) - return -EFAULT; - - return ocfs2_change_file_space(filp, cmd, &sr); - case OCFS2_IOC_GROUP_EXTEND: - if (!capable(CAP_SYS_RESOURCE)) - return -EPERM; - - if (get_user(new_clusters, (int __user *)arg)) - return -EFAULT; - - return ocfs2_group_extend(inode, new_clusters); - case OCFS2_IOC_GROUP_ADD: - case OCFS2_IOC_GROUP_ADD64: - if (!capable(CAP_SYS_RESOURCE)) - return -EPERM; - - if (copy_from_user(&input, (int __user *) arg, sizeof(input))) - return -EFAULT; - - return ocfs2_group_add(inode, &input); - case OCFS2_IOC_REFLINK: - if (copy_from_user(&args, (struct reflink_arguments *)arg, - sizeof(args))) - return -EFAULT; - old_path = (const char *)(unsigned long)args.old_path; - new_path = (const char *)(unsigned long)args.new_path; - preserve = (args.preserve != 0); - - return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve); - case OCFS2_IOC_INFO: - if (copy_from_user(&info, (struct ocfs2_info __user *)arg, - sizeof(struct ocfs2_info))) - return -EFAULT; - - return ocfs2_info_handle(inode, &info, 0); - case FITRIM: - { - struct super_block *sb = inode->i_sb; - struct fstrim_range range; - int ret = 0; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (copy_from_user(&range, (struct fstrim_range *)arg, - sizeof(range))) - return -EFAULT; - - ret = ocfs2_trim_fs(sb, &range); - if (ret < 0) - return ret; - - if (copy_to_user((struct fstrim_range *)arg, &range, - sizeof(range))) - return -EFAULT; - - return 0; - } - case OCFS2_IOC_MOVE_EXT: - return ocfs2_ioctl_move_extents(filp, (void __user *)arg); - default: - return -ENOTTY; - } -} - -#ifdef CONFIG_COMPAT -long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg) -{ - bool preserve; - struct reflink_arguments args; - struct inode *inode = file->f_path.dentry->d_inode; - struct ocfs2_info info; - - switch (cmd) { - case OCFS2_IOC32_GETFLAGS: - cmd = OCFS2_IOC_GETFLAGS; - break; - case OCFS2_IOC32_SETFLAGS: - cmd = OCFS2_IOC_SETFLAGS; - break; - case OCFS2_IOC_RESVSP: - case OCFS2_IOC_RESVSP64: - case OCFS2_IOC_UNRESVSP: - case OCFS2_IOC_UNRESVSP64: - case OCFS2_IOC_GROUP_EXTEND: - case OCFS2_IOC_GROUP_ADD: - case OCFS2_IOC_GROUP_ADD64: - case FITRIM: - break; - case OCFS2_IOC_REFLINK: - if (copy_from_user(&args, (struct reflink_arguments *)arg, - sizeof(args))) - return -EFAULT; - preserve = (args.preserve != 0); - - return ocfs2_reflink_ioctl(inode, compat_ptr(args.old_path), - compat_ptr(args.new_path), preserve); - case OCFS2_IOC_INFO: - if (copy_from_user(&info, (struct ocfs2_info __user *)arg, - sizeof(struct ocfs2_info))) - return -EFAULT; - - return ocfs2_info_handle(inode, &info, 1); - case OCFS2_IOC_MOVE_EXT: - break; - default: - return -ENOIOCTLCMD; - } - - return ocfs2_ioctl(file, cmd, arg); -} -#endif |