diff options
Diffstat (limited to 'fs')
-rw-r--r-- | fs/gfs2/bmap.c | 1 | ||||
-rw-r--r-- | fs/gfs2/dir.c | 412 | ||||
-rw-r--r-- | fs/gfs2/dir.h | 15 | ||||
-rw-r--r-- | fs/gfs2/incore.h | 3 | ||||
-rw-r--r-- | fs/gfs2/inode.c | 14 | ||||
-rw-r--r-- | fs/gfs2/log.c | 34 | ||||
-rw-r--r-- | fs/gfs2/ops_dentry.c | 1 | ||||
-rw-r--r-- | fs/gfs2/ops_export.c | 8 | ||||
-rw-r--r-- | fs/gfs2/ops_file.c | 219 | ||||
-rw-r--r-- | fs/gfs2/ops_fstype.c | 4 | ||||
-rw-r--r-- | fs/gfs2/ops_inode.c | 13 | ||||
-rw-r--r-- | fs/gfs2/recovery.c | 2 | ||||
-rw-r--r-- | fs/gfs2/super.c | 1 | ||||
-rw-r--r-- | fs/gfs2/util.c | 5 | ||||
-rw-r--r-- | fs/gfs2/util.h | 2 |
15 files changed, 416 insertions, 318 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index cd5e4d863ce..c7723119acb 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -13,6 +13,7 @@ #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index f31f163da1a..ba3438553f3 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -60,6 +60,7 @@ #include <linux/buffer_head.h> #include <linux/sort.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" @@ -344,7 +345,8 @@ fail: } typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent, - const struct qstr *name); + const struct qstr *name, + void *opaque); static inline int __gfs2_dirent_find(const struct gfs2_dirent *dent, const struct qstr *name, int ret) @@ -358,13 +360,15 @@ static inline int __gfs2_dirent_find(const struct gfs2_dirent *dent, } static int gfs2_dirent_find(const struct gfs2_dirent *dent, - const struct qstr *name) + const struct qstr *name, + void *opaque) { return __gfs2_dirent_find(dent, name, 1); } static int gfs2_dirent_prev(const struct gfs2_dirent *dent, - const struct qstr *name) + const struct qstr *name, + void *opaque) { return __gfs2_dirent_find(dent, name, 2); } @@ -374,7 +378,8 @@ static int gfs2_dirent_prev(const struct gfs2_dirent *dent, * name->len holds size of block. */ static int gfs2_dirent_last(const struct gfs2_dirent *dent, - const struct qstr *name) + const struct qstr *name, + void *opaque) { const char *start = name->name; const char *end = (const char *)dent + be16_to_cpu(dent->de_rec_len); @@ -384,17 +389,36 @@ static int gfs2_dirent_last(const struct gfs2_dirent *dent, } static int gfs2_dirent_find_space(const struct gfs2_dirent *dent, - const struct qstr *name) + const struct qstr *name, + void *opaque) { unsigned required = GFS2_DIRENT_SIZE(name->len); unsigned actual = GFS2_DIRENT_SIZE(be16_to_cpu(dent->de_name_len)); unsigned totlen = be16_to_cpu(dent->de_rec_len); + if (!dent->de_inum.no_addr) + actual = GFS2_DIRENT_SIZE(0); if ((totlen - actual) >= required) return 1; return 0; } +struct dirent_gather { + const struct gfs2_dirent **pdent; + unsigned offset; +}; + +static int gfs2_dirent_gather(const struct gfs2_dirent *dent, + const struct qstr *name, + void *opaque) +{ + struct dirent_gather *g = opaque; + if (dent->de_inum.no_addr) { + g->pdent[g->offset++] = dent; + } + return 0; +} + /* * Other possible things to check: * - Inode located within filesystem size (and on valid block) @@ -431,19 +455,12 @@ error: return -EIO; } -static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode, - void *buf, - unsigned int len, gfs2_dscan_t scan, - const struct qstr *name) +static int gfs2_dirent_offset(const void *buf) { - struct gfs2_meta_header *h = buf; - struct gfs2_dirent *dent, *prev; - unsigned offset; - unsigned size; - int ret = 0; + const struct gfs2_meta_header *h = buf; + int offset; BUG_ON(buf == NULL); - BUG_ON(name == NULL); switch(be16_to_cpu(h->mh_type)) { case GFS2_METATYPE_LF: @@ -455,14 +472,36 @@ static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode, default: goto wrong_type; } + return offset; +wrong_type: + printk(KERN_WARNING "gfs2_scan_dirent: wrong block type %u\n", + be16_to_cpu(h->mh_type)); + return -1; +} +static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode, + void *buf, + unsigned int len, gfs2_dscan_t scan, + const struct qstr *name, + void *opaque) +{ + struct gfs2_dirent *dent, *prev; + unsigned offset; + unsigned size; + int ret = 0; + + ret = gfs2_dirent_offset(buf); + if (ret < 0) + goto consist_inode; + + offset = ret; prev = NULL; dent = (struct gfs2_dirent *)(buf + offset); size = be16_to_cpu(dent->de_rec_len); if (gfs2_check_dirent(dent, offset, size, len, 1)) goto consist_inode; do { - ret = scan(dent, name); + ret = scan(dent, name, opaque); if (ret) break; offset += size; @@ -487,9 +526,6 @@ static struct gfs2_dirent *gfs2_dirent_scan(struct inode *inode, return ERR_PTR(ret); } -wrong_type: - printk(KERN_WARNING "gfs2_scan_dirent: %p wrong block type %u\n", scan, - be16_to_cpu(h->mh_type)); consist_inode: gfs2_consist_inode(inode->u.generic_ip); return ERR_PTR(-EIO); @@ -651,7 +687,8 @@ static struct gfs2_dirent *gfs2_dirent_alloc(struct inode *inode, const struct qstr *name) { struct gfs2_dirent *dent; - dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, gfs2_dirent_find_space, name); + dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, + gfs2_dirent_find_space, name, NULL); if (!dent || IS_ERR(dent)) return dent; return gfs2_init_dirent(inode, dent, name, bh); @@ -734,7 +771,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode, return ERR_PTR(error); do { dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, - scan, name); + scan, name, NULL); if (dent) goto got_dent; leaf = (struct gfs2_leaf *)bh->b_data; @@ -751,7 +788,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode, error = gfs2_meta_inode_buffer(ip, &bh); if (error) return ERR_PTR(error); - dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, scan, name); + dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, scan, name, NULL); got_dent: *pbh = bh; return dent; @@ -764,6 +801,7 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh, struct buffer_head *bh = gfs2_meta_new(ip->i_gl, bn); struct gfs2_leaf *leaf; struct gfs2_dirent *dent; + struct qstr name = { .name = "", .len = 0, .hash = 0 }; if (!bh) return NULL; gfs2_trans_add_bh(ip->i_gl, bh, 1); @@ -775,12 +813,7 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh, leaf->lf_next = cpu_to_be64(0); memset(leaf->lf_reserved, 0, sizeof(leaf->lf_reserved)); dent = (struct gfs2_dirent *)(leaf+1); - dent->de_inum.no_formal_ino = cpu_to_be64(0); - dent->de_inum.no_addr = cpu_to_be64(0); - dent->de_hash = cpu_to_be32(0); - dent->de_rec_len = cpu_to_be16(bh->b_size - sizeof(struct gfs2_leaf)); - dent->de_name_len = cpu_to_be16(0); - dent->de_type = cpu_to_be16(0); + gfs2_qstr2dirent(&name, bh->b_size - sizeof(struct gfs2_leaf), dent); *pbh = bh; return leaf; } @@ -831,7 +864,7 @@ static int dir_make_exhash(struct inode *inode) sizeof(struct gfs2_leaf); args.name = bh->b_data; dent = gfs2_dirent_scan(dip->i_vnode, bh->b_data, bh->b_size, - gfs2_dirent_last, &args); + gfs2_dirent_last, &args, NULL); if (!dent) { brelse(bh); brelse(dibh); @@ -939,7 +972,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) lp[x] = cpu_to_be64(bn); error = gfs2_dir_write_data(dip, (char *)lp, start * sizeof(uint64_t), - half_len * sizeof(uint64_t)); + half_len * sizeof(uint64_t)); if (error != half_len * sizeof(uint64_t)) { if (error >= 0) error = -EIO; @@ -965,7 +998,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) str.name = (char*)(dent+1); str.len = be16_to_cpu(dent->de_name_len); str.hash = be32_to_cpu(dent->de_hash); - new = gfs2_dirent_alloc(dip->i_vnode, nbh, &str); + new = gfs2_dirent_alloc(inode, nbh, &str); if (IS_ERR(new)) { error = PTR_ERR(new); break; @@ -1154,10 +1187,10 @@ static int compare_dents(const void *a, const void *b) static int do_filldir_main(struct gfs2_inode *dip, uint64_t *offset, void *opaque, gfs2_filldir_t filldir, - struct gfs2_dirent **darr, uint32_t entries, + const struct gfs2_dirent **darr, uint32_t entries, int *copied) { - struct gfs2_dirent *dent, *dent_next; + const struct gfs2_dirent *dent, *dent_next; struct gfs2_inum inum; uint64_t off, off_next; unsigned int x, y; @@ -1216,189 +1249,74 @@ static int do_filldir_main(struct gfs2_inode *dip, uint64_t *offset, return 0; } -/** - * do_filldir_single - Read directory entries out of a single block - * @dip: The GFS2 inode - * @offset: The offset in the file to read from - * @opaque: opaque data to pass to filldir - * @filldir: The function to pass entries to - * @bh: the block - * @entries: the number of entries in the block - * @copied: pointer to int that's non-zero if a entry has been copied out - * - * Returns: errno, >0 on exception from filldir - */ - -static int do_filldir_single(struct gfs2_inode *dip, uint64_t *offset, - void *opaque, gfs2_filldir_t filldir, - struct buffer_head *bh, uint32_t entries, - int *copied) +static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque, + gfs2_filldir_t filldir, int *copied, + unsigned *depth, u64 leaf_no) { - struct gfs2_dirent **darr; - struct gfs2_dirent *de; - unsigned int e = 0; - int error; - - if (!entries) - return 0; - - darr = kcalloc(entries, sizeof(struct gfs2_dirent *), GFP_KERNEL); - if (!darr) - return -ENOMEM; + struct gfs2_inode *ip = inode->u.generic_ip; + struct buffer_head *bh; + struct gfs2_leaf *lf; + unsigned entries = 0; + unsigned leaves = 0; + const struct gfs2_dirent **darr, *dent; + struct dirent_gather g; + struct buffer_head **larr; + int leaf = 0; + int error, i; + u64 lfn = leaf_no; - dirent_first(dip, bh, &de); do { - if (!de->de_inum.no_addr) - continue; - if (e >= entries) { - gfs2_consist_inode(dip); - error = -EIO; - goto out; - } - darr[e++] = de; - } while (dirent_next(dip, bh, &de) == 0); - - if (e != entries) { - gfs2_consist_inode(dip); - error = -EIO; - goto out; - } - - error = do_filldir_main(dip, offset, opaque, filldir, darr, - entries, copied); - - out: - kfree(darr); - - return error; -} - -/** - * do_filldir_multi - Read directory entries out of a linked leaf list - * @dip: The GFS2 inode - * @offset: The offset in the file to read from - * @opaque: opaque data to pass to filldir - * @filldir: The function to pass entries to - * @bh: the first leaf in the list - * @copied: pointer to int that's non-zero if a entry has been copied out - * - * Returns: errno, >0 on exception from filldir - */ - -static int do_filldir_multi(struct gfs2_inode *dip, uint64_t *offset, - void *opaque, gfs2_filldir_t filldir, - struct buffer_head *bh, int *copied) -{ - struct buffer_head **larr = NULL; - struct gfs2_dirent **darr; - struct gfs2_leaf *leaf; - struct buffer_head *tmp_bh; - struct gfs2_dirent *de; - unsigned int entries, e = 0; - unsigned int leaves = 0, l = 0; - unsigned int x; - uint64_t ln; - int error = 0; - - /* Count leaves and entries */ - - leaf = (struct gfs2_leaf *)bh->b_data; - entries = be16_to_cpu(leaf->lf_entries); - ln = be64_to_cpu(leaf->lf_next); - - while (ln) { - error = get_leaf(dip, ln, &tmp_bh); + error = get_leaf(ip, lfn, &bh); if (error) - return error; - - leaf = (struct gfs2_leaf *)tmp_bh->b_data; - if (leaf->lf_entries) { - entries += be16_to_cpu(leaf->lf_entries); - leaves++; - } - ln = be64_to_cpu(leaf->lf_next); - - brelse(tmp_bh); - } + goto out; + lf = (struct gfs2_leaf *)bh->b_data; + if (leaves == 0) + *depth = be16_to_cpu(lf->lf_depth); + entries += be16_to_cpu(lf->lf_entries); + leaves++; + lfn = be64_to_cpu(lf->lf_next); + brelse(bh); + } while(lfn); if (!entries) return 0; - if (leaves) { - larr = kcalloc(leaves, sizeof(struct buffer_head *),GFP_KERNEL); - if (!larr) - return -ENOMEM; - } - - darr = kcalloc(entries, sizeof(struct gfs2_dirent *), GFP_KERNEL); - if (!darr) { - kfree(larr); - return -ENOMEM; - } - - leaf = (struct gfs2_leaf *)bh->b_data; - if (leaf->lf_entries) { - dirent_first(dip, bh, &de); - do { - if (!de->de_inum.no_addr) - continue; - if (e >= entries) { - gfs2_consist_inode(dip); - error = -EIO; - goto out; - } - darr[e++] = de; - } while (dirent_next(dip, bh, &de) == 0); - } - ln = be64_to_cpu(leaf->lf_next); + error = -ENOMEM; + larr = kmalloc((leaves + entries) * sizeof(void*), GFP_KERNEL); + if (!larr) + goto out; + darr = (const struct gfs2_dirent **)(larr + leaves); + g.pdent = darr; + g.offset = 0; + lfn = leaf_no; - while (ln) { - error = get_leaf(dip, ln, &tmp_bh); + do { + error = get_leaf(ip, lfn, &bh); if (error) - goto out; - - leaf = (struct gfs2_leaf *)tmp_bh->b_data; - if (leaf->lf_entries) { - dirent_first(dip, tmp_bh, &de); - do { - if (!de->de_inum.no_addr) - continue; - if (e >= entries) { - gfs2_consist_inode(dip); - error = -EIO; - goto out; - } - darr[e++] = de; - } while (dirent_next(dip, tmp_bh, &de) == 0); - - larr[l++] = tmp_bh; - - ln = be64_to_cpu(leaf->lf_next); + goto out_kfree; + lf = (struct gfs2_leaf *)bh->b_data; + lfn = be64_to_cpu(lf->lf_next); + if (lf->lf_entries) { + dent = gfs2_dirent_scan(inode, bh->b_data, bh->b_size, + gfs2_dirent_gather, NULL, &g); + error = PTR_ERR(dent); + if (IS_ERR(dent)) { + goto out_kfree; + } + error = 0; + larr[leaf++] = bh; } else { - ln = be64_to_cpu(leaf->lf_next); - brelse(tmp_bh); + brelse(bh); } - } + } while(lfn); - if (gfs2_assert_withdraw(dip->i_sbd, l == leaves)) { - error = -EIO; - goto out; - } - if (e != entries) { - gfs2_consist_inode(dip); - error = -EIO; - goto out; - } - - error = do_filldir_main(dip, offset, opaque, filldir, darr, + error = do_filldir_main(ip, offset, opaque, filldir, darr, entries, copied); - - out: - kfree(darr); - for (x = 0; x < l; x++) - brelse(larr[x]); +out_kfree: + for(i = 0; i < leaf; i++) + brelse(larr[i]); kfree(larr); - +out: return error; } @@ -1412,18 +1330,18 @@ static int do_filldir_multi(struct gfs2_inode *dip, uint64_t *offset, * Returns: errno */ -static int dir_e_read(struct gfs2_inode *dip, uint64_t *offset, void *opaque, +static int dir_e_read(struct inode *inode, uint64_t *offset, void *opaque, gfs2_filldir_t filldir) { + struct gfs2_inode *dip = inode->u.generic_ip; struct gfs2_sbd *sdp = dip->i_sbd; - struct buffer_head *bh; - struct gfs2_leaf *leaf; - uint32_t hsize, len; + uint32_t hsize, len = 0; uint32_t ht_offset, lp_offset, ht_offset_cur = -1; uint32_t hash, index; uint64_t *lp; int copied = 0; int error = 0; + unsigned depth; hsize = 1 << dip->i_di.di_depth; if (hsize * sizeof(uint64_t) != dip->i_di.di_size) { @@ -1454,61 +1372,66 @@ static int dir_e_read(struct gfs2_inode *dip, uint64_t *offset, void *opaque, ht_offset_cur = ht_offset; } - error = get_leaf(dip, be64_to_cpu(lp[lp_offset]), &bh); + error = gfs2_dir_read_leaf(inode, offset, opaque, filldir, + &copied, &depth, + be64_to_cpu(lp[lp_offset])); if (error) - goto out; - - leaf = (struct gfs2_leaf *)bh->b_data; - if (leaf->lf_next) - error = do_filldir_multi(dip, offset, opaque, filldir, - bh, &copied); - else - error = do_filldir_single(dip, offset, opaque, filldir, - bh, - be16_to_cpu(leaf->lf_entries), - &copied); - - brelse(bh); - - if (error) { - if (error > 0) - error = 0; - goto out; - } + break; - len = 1 << (dip->i_di.di_depth - be16_to_cpu(leaf->lf_depth)); + len = 1 << (dip->i_di.di_depth - depth); index = (index & ~(len - 1)) + len; } - out: +out: kfree(lp); - + if (error > 0) + error = 0; return error; } -static int dir_l_read(struct gfs2_inode *dip, uint64_t *offset, void *opaque, - gfs2_filldir_t filldir) +int gfs2_dir_read(struct inode *inode, uint64_t *offset, void *opaque, + gfs2_filldir_t filldir) { + struct gfs2_inode *dip = inode->u.generic_ip; + struct dirent_gather g; + const struct gfs2_dirent **darr, *dent; struct buffer_head *dibh; int copied = 0; int error; + if (!dip->i_di.di_entries) + return 0; + + if (dip->i_di.di_flags & GFS2_DIF_EXHASH) + return dir_e_read(inode, offset, opaque, filldir); + if (!gfs2_is_stuffed(dip)) { gfs2_consist_inode(dip); return -EIO; } - if (!dip->i_di.di_entries) - return 0; - error = gfs2_meta_inode_buffer(dip, &dibh); if (error) return error; - error = do_filldir_single(dip, offset, - opaque, filldir, - dibh, dip->i_di.di_entries, - &copied); + error = -ENOMEM; + darr = kmalloc(dip->i_di.di_entries * sizeof(struct gfs2_dirent *), + GFP_KERNEL); + if (darr) { + g.pdent = darr; + g.offset = 0; + dent = gfs2_dirent_scan(inode, dibh->b_data, dibh->b_size, + gfs2_dirent_gather, NULL, &g); + if (IS_ERR(dent)) { + error = PTR_ERR(dent); + goto out; + } + error = do_filldir_main(dip, offset, opaque, filldir, darr, + dip->i_di.di_entries, &copied); +out: + kfree(darr); + } + if (error > 0) error = 0; @@ -1694,7 +1617,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name) return PTR_ERR(dent); } /* If not first in block, adjust pointers accordingly */ - if (gfs2_dirent_find(dent, name) == 0) { + if (gfs2_dirent_find(dent, name, NULL) == 0) { prev = dent; dent = (struct gfs2_dirent *)((char *)dent + be16_to_cpu(prev->de_rec_len)); } @@ -1724,19 +1647,6 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name) return error; } -int gfs2_dir_read(struct gfs2_inode *dip, uint64_t *offset, void *opaque, - gfs2_filldir_t filldir) -{ - int error; - - if (dip->i_di.di_flags & GFS2_DIF_EXHASH) - error = dir_e_read(dip, offset, opaque, filldir); - else - error = dir_l_read(dip, offset, opaque, filldir); - - return error; -} - /** * gfs2_dir_mvino - Change inode number of directory entry * @dip: The GFS2 inode diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h index 8fd4dc0f700..42b3a1f34de 100644 --- a/fs/gfs2/dir.h +++ b/fs/gfs2/dir.h @@ -32,7 +32,7 @@ int gfs2_dir_search(struct inode *dir, const struct qstr *filename, int gfs2_dir_add(struct inode *inode, const struct qstr *filename, const struct gfs2_inum *inum, unsigned int type); int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename); -int gfs2_dir_read(struct gfs2_inode *dip, uint64_t * offset, void *opaque, +int gfs2_dir_read(struct inode *inode, uint64_t * offset, void *opaque, gfs2_filldir_t filldir); int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, struct gfs2_inum *new_inum, unsigned int new_type); @@ -44,6 +44,19 @@ int gfs2_diradd_alloc_required(struct inode *dir, int gfs2_dir_get_buffer(struct gfs2_inode *ip, uint64_t block, int new, struct buffer_head **bhp); +static inline uint32_t gfs2_disk_hash(const char *data, int len) +{ + return crc32_le(0xFFFFFFFF, data, len) ^ 0xFFFFFFFF; +} + + +static inline void gfs2_str2qstr(struct qstr *name, const char *fname) +{ + name->name = fname; + name->len = strlen(fname); + name->hash = gfs2_disk_hash(name->name, name->len); +} + /* N.B. This probably ought to take inum & type as args as well */ static inline void gfs2_qstr2dirent(const struct qstr *name, u16 reclen, struct gfs2_dirent *dent) { diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 62f109e553c..be307185f49 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -634,8 +634,7 @@ struct gfs2_sbd { struct list_head sd_log_le_databuf; unsigned int sd_log_blks_free; - struct list_head sd_log_blks_list; - wait_queue_head_t sd_log_blks_wait; + struct mutex sd_log_reserve_mutex; uint64_t sd_log_sequence; unsigned int sd_log_head; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index d403d51d5b0..6140c2434e8 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -15,6 +15,7 @@ #include <linux/posix_acl.h> #include <linux/sort.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" @@ -701,9 +702,7 @@ int gfs2_change_nlink(struct gfs2_inode *ip, int diff) struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) { struct qstr qstr; - qstr.name = name; - qstr.len = strlen(name); - qstr.hash = gfs2_disk_hash(qstr.name, qstr.len); + gfs2_str2qstr(&qstr, name); return gfs2_lookupi(dip, &qstr, 1, NULL); } @@ -1389,9 +1388,7 @@ int gfs2_rmdiri(struct gfs2_inode *dip, struct qstr *name, if (error) return error; - dotname.len = 1; - dotname.name = "."; - dotname.hash = gfs2_disk_hash(dotname.name, dotname.len); + gfs2_str2qstr(&dotname, "."); error = gfs2_dir_del(ip, &dotname); if (error) return error; @@ -1487,10 +1484,7 @@ int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) struct qstr dotdot; int error = 0; - memset(&dotdot, 0, sizeof(struct qstr)); - dotdot.name = ".."; - dotdot.len = 2; - dotdot.hash = gfs2_disk_hash(dotdot.name, dotdot.len); + gfs2_str2qstr(&dotdot, ".."); igrab(dir); diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index e6a84f7a9b7..16c14441a37 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -13,6 +13,7 @@ #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" @@ -24,18 +25,13 @@ #include "lops.h" #include "meta_io.h" #include "util.h" +#include "dir.h" #define PULL 1 -static void do_lock_wait(struct gfs2_sbd *sdp, wait_queue_head_t *wq, - atomic_t *a) -{ - wait_event(*wq, atomic_read(a) ? 0 : 1); -} - static void lock_for_trans(struct gfs2_sbd *sdp) { - do_lock_wait(sdp, &sdp->sd_log_trans_wq, &sdp->sd_log_flush_count); + wait_event(sdp->sd_log_trans_wq, atomic_read(&sdp->sd_log_flush_count) ? 0 : 1); atomic_inc(&sdp->sd_log_trans_count); } @@ -49,7 +45,7 @@ static void unlock_from_trans(struct gfs2_sbd *sdp) static void gfs2_lock_for_flush(struct gfs2_sbd *sdp) { atomic_inc(&sdp->sd_log_flush_count); - do_lock_wait(sdp, &sdp->sd_log_flush_wq, &sdp->sd_log_trans_count); + wait_event(sdp->sd_log_flush_wq, atomic_read(&sdp->sd_log_trans_count) ? 0 : 1); } static void gfs2_unlock_from_flush(struct gfs2_sbd *sdp) @@ -191,37 +187,19 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks) { - LIST_HEAD(list); unsigned int try = 0; if (gfs2_assert_warn(sdp, blks) || gfs2_assert_warn(sdp, blks <= sdp->sd_jdesc->jd_blocks)) return -EINVAL; + mutex_lock(&sdp->sd_log_reserve_mutex); for (;;) { gfs2_log_lock(sdp); - if (list_empty(&list)) { - list_add_tail(&list, &sdp->sd_log_blks_list); - while (sdp->sd_log_blks_list.next != &list) { - DECLARE_WAITQUEUE(__wait_chan, current); - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&sdp->sd_log_blks_wait, - &__wait_chan); - gfs2_log_unlock(sdp); - schedule(); - gfs2_log_lock(sdp); - remove_wait_queue(&sdp->sd_log_blks_wait, - &__wait_chan); - set_current_state(TASK_RUNNING); - } - } - /* Never give away the last block so we can - always pull the tail if we need to. */ if (sdp->sd_log_blks_free > blks) { sdp->sd_log_blks_free -= blks; - list_del(&list); gfs2_log_unlock(sdp); - wake_up(&sdp->sd_log_blks_wait); + mutex_unlock(&sdp->sd_log_reserve_mutex); break; } diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c index b54608f9df5..95837107609 100644 --- a/fs/gfs2/ops_dentry.c +++ b/fs/gfs2/ops_dentry.c @@ -14,6 +14,7 @@ #include <linux/buffer_head.h> #include <linux/smp_lock.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c index b27bce74a79..be16c68263d 100644 --- a/fs/gfs2/ops_export.c +++ b/fs/gfs2/ops_export.c @@ -13,6 +13,7 @@ #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" @@ -153,7 +154,7 @@ static int gfs2_get_name(struct dentry *parent, char *name, if (error) return error; - error = gfs2_dir_read(dip, &offset, &gnfd, get_name_filldir); + error = gfs2_dir_read(dir, &offset, &gnfd, get_name_filldir); gfs2_glock_dq_uninit(&gh); @@ -165,12 +166,11 @@ static int gfs2_get_name(struct dentry *parent, char *name, static struct dentry *gfs2_get_parent(struct dentry *child) { - struct qstr dotdot = { .name = "..", .len = 2 }; + struct qstr dotdot; struct inode *inode; struct dentry *dentry; - dotdot.hash = gfs2_disk_hash(dotdot.name, dotdot.len); - + gfs2_str2qstr(&dotdot, ".."); inode = gfs2_lookupi(child->d_inode, &dotdot, 1, NULL); if (!inode) diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 6333a14cf77..ac8e1238cb6 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -19,6 +19,8 @@ #include <linux/smp_lock.h> #include <linux/fs.h> #include <linux/gfs2_ondisk.h> +#include <linux/ext2_fs.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include <asm/uaccess.h> @@ -39,6 +41,7 @@ #include "rgrp.h" #include "trans.h" #include "util.h" +#include "eaops.h" /* "bad" is for NFS support */ struct filldir_bad_entry { @@ -357,7 +360,8 @@ static int filldir_reg_func(void *opaque, const char *name, unsigned int length, static int readdir_reg(struct file *file, void *dirent, filldir_t filldir) { - struct gfs2_inode *dip = file->f_mapping->host->u.generic_ip; + struct inode *dir = file->f_mapping->host; + struct gfs2_inode *dip = dir->u.generic_ip; struct filldir_reg fdr; struct gfs2_holder d_gh; uint64_t offset = file->f_pos; @@ -375,7 +379,7 @@ static int readdir_reg(struct file *file, void *dirent, filldir_t filldir) return error; } - error = gfs2_dir_read(dip, &offset, &fdr, filldir_reg_func); + error = gfs2_dir_read(dir, &offset, &fdr, filldir_reg_func); gfs2_glock_dq_uninit(&d_gh); @@ -446,7 +450,8 @@ static int filldir_bad_func(void *opaque, const char *name, unsigned int length, static int readdir_bad(struct file *file, void *dirent, filldir_t filldir) { - struct gfs2_inode *dip = file->f_mapping->host->u.generic_ip; + struct inode *dir = file->f_mapping->host; + struct gfs2_inode *dip = dir->u.generic_ip; struct gfs2_sbd *sdp = dip->i_sbd; struct filldir_reg fdr; unsigned int entries, size; @@ -479,7 +484,7 @@ static int readdir_bad(struct file *file, void *dirent, filldir_t filldir) goto out; } - error = gfs2_dir_read(dip, &offset, fdb, filldir_bad_func); + error = gfs2_dir_read(dir, &offset, fdb, filldir_bad_func); gfs2_glock_dq_uninit(&d_gh); @@ -531,6 +536,210 @@ 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 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 int get_ext2_flags(struct inode *inode, u32 __user *ptr) +{ + struct gfs2_inode *ip = inode->u.generic_ip; + struct gfs2_holder gh; + int error; + u32 ext2; + + 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)) + error = -EFAULT; + + gfs2_glock_dq_m(1, &gh); + gfs2_holder_uninit(&gh); + return error; +} + +/* Flags that can be set by user space */ +#define GFS2_FLAGS_USER_SET (GFS2_DIF_JDATA| \ + GFS2_DIF_DIRECTIO| \ + GFS2_DIF_IMMUTABLE| \ + GFS2_DIF_APPENDONLY| \ + GFS2_DIF_NOATIME| \ + GFS2_DIF_SYNC| \ + GFS2_DIF_SYSTEM| \ + GFS2_DIF_INHERIT_DIRECTIO| \ + GFS2_DIF_INHERIT_JDATA) + +/** + * gfs2_set_flags - set flags on an inode + * @inode: The inode + * @flags: The flags to set + * @mask: Indicates which flags are valid + * + */ +static int gfs2_set_flags(struct inode *inode, u32 flags, u32 mask) +{ + struct gfs2_inode *ip = inode->u.generic_ip; + struct buffer_head *bh; + struct gfs2_holder gh; + int error; + u32 new_flags; + + gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + if (error) + return error; + + new_flags = (ip->i_di.di_flags & ~mask) | (flags & mask); + if ((new_flags ^ flags) == 0) + goto out; + + error = -EINVAL; + if ((new_flags ^ flags) & ~GFS2_FLAGS_USER_SET) + goto out; + + if (S_ISDIR(inode->i_mode)) { + if ((new_flags ^ flags) & (GFS2_DIF_JDATA | GFS2_DIF_DIRECTIO)) + goto out; + } else if (S_ISREG(inode->i_mode)) { + if ((new_flags ^ flags) & (GFS2_DIF_INHERIT_DIRECTIO| + GFS2_DIF_INHERIT_JDATA)) + goto out; + } else + goto out; + + error = -EPERM; + if (IS_IMMUTABLE(inode) && (new_flags & GFS2_DIF_IMMUTABLE)) + goto out; + if (IS_APPEND(inode) && (new_flags & GFS2_DIF_APPENDONLY)) + goto out; + error = gfs2_repermission(inode, MAY_WRITE, NULL); + if (error) + goto out; + + error = gfs2_meta_inode_buffer(ip, &bh); + if (error) + goto out; + gfs2_trans_add_bh(ip->i_gl, bh, 1); + ip->i_di.di_flags = new_flags; + gfs2_dinode_out(&ip->i_di, bh->b_data); + brelse(bh); +out: + gfs2_glock_dq_uninit(&gh); + return error; +} + +static int set_ext2_flags(struct inode *inode, u32 __user *ptr) +{ + u32 ext2, gfs2; + if (get_user(ext2, ptr)) + return -EFAULT; + if (gfs2_flags_from_ext2(&gfs2, ext2)) + return -EINVAL; + return gfs2_set_flags(inode, gfs2, ~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); + } + return -ENOTTY; +} + + /** * gfs2_mmap - * @file: The file to map @@ -832,6 +1041,7 @@ struct file_operations gfs2_file_fops = { .write = generic_file_write, .writev = generic_file_writev, .aio_write = generic_file_aio_write, + .ioctl = gfs2_ioctl, .mmap = gfs2_mmap, .open = gfs2_open, .release = gfs2_close, @@ -843,6 +1053,7 @@ struct file_operations gfs2_file_fops = { struct file_operations gfs2_dir_fops = { .readdir = gfs2_readdir, + .ioctl = gfs2_ioctl, .open = gfs2_open, .release = gfs2_close, .fsync = gfs2_fsync, diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 8d2c557b3ff..2628bf32633 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -97,9 +97,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) INIT_LIST_HEAD(&sdp->sd_log_le_rg); INIT_LIST_HEAD(&sdp->sd_log_le_databuf); - INIT_LIST_HEAD(&sdp->sd_log_blks_list); - init_waitqueue_head(&sdp->sd_log_blks_wait); - + mutex_init(&sdp->sd_log_reserve_mutex); INIT_LIST_HEAD(&sdp->sd_ail1_list); INIT_LIST_HEAD(&sdp->sd_ail2_list); diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index e8ab9d254b7..1e2b709711a 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -18,6 +18,7 @@ #include <linux/xattr.h> #include <linux/posix_acl.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include <asm/uaccess.h> @@ -417,18 +418,16 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) if (!gfs2_assert_withdraw(sdp, !error)) { struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); - struct qstr str = { .name = ".", .len = 1 }; - str.hash = gfs2_disk_hash(str.name, str.len); + struct qstr str; + gfs2_str2qstr(&str, "."); gfs2_trans_add_bh(ip->i_gl, dibh, 1); gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); dent->de_inum = di->di_num; /* already GFS2 endian */ dent->de_type = DT_DIR; di->di_entries = cpu_to_be32(1); - str.name = ".."; - str.len = 2; - str.hash = gfs2_disk_hash(str.name, str.len); + gfs2_str2qstr(&str, ".."); dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); @@ -772,9 +771,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (dir_rename) { struct qstr name; - name.len = 2; - name.name = ".."; - name.hash = gfs2_disk_hash(name.name, name.len); + gfs2_str2qstr(&name, ".."); error = gfs2_change_nlink(ndip, +1); if (error) diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 2df450e2f43..6c7e2e880e3 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -13,6 +13,7 @@ #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/gfs2_ondisk.h> +#include <linux/crc32.h> #include <asm/semaphore.h> #include "gfs2.h" @@ -27,6 +28,7 @@ #include "recovery.h" #include "super.h" #include "util.h" +#include "dir.h" int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk, struct buffer_head **bh) diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 71cca762940..a4da649d086 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -12,6 +12,7 @@ #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> +#include <linux/crc32.h> #include <linux/gfs2_ondisk.h> #include <asm/semaphore.h> diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c index 8b22fa91bd1..7cd9e25639c 100644 --- a/fs/gfs2/util.c +++ b/fs/gfs2/util.c @@ -28,11 +28,6 @@ kmem_cache_t *gfs2_glock_cachep __read_mostly; kmem_cache_t *gfs2_inode_cachep __read_mostly; kmem_cache_t *gfs2_bufdata_cachep __read_mostly; -uint32_t gfs2_disk_hash(const char *data, int len) -{ - return crc32_le(0xFFFFFFFF, data, len) ^ 0xFFFFFFFF; -} - void gfs2_assert_i(struct gfs2_sbd *sdp) { printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n", diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index 8d6eba3bdf0..addbe304993 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -10,8 +10,6 @@ #ifndef __UTIL_DOT_H__ #define __UTIL_DOT_H__ -uint32_t gfs2_disk_hash(const char *data, int len); - #define fs_printk(level, fs, fmt, arg...) \ printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg) |