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@@ -18,6 +18,7 @@
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#include <linux/gfs2_ondisk.h>
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#include <linux/crc32.h>
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#include <linux/fiemap.h>
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+#include <linux/security.h>
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#include <asm/uaccess.h>
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#include "gfs2.h"
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@@ -34,7 +35,675 @@
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#include "trans.h"
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#include "util.h"
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#include "super.h"
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+#include "glops.h"
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+
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+struct gfs2_skip_data {
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+ u64 no_addr;
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+ int skipped;
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+ int non_block;
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+};
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+
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+static int iget_test(struct inode *inode, void *opaque)
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+{
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+ struct gfs2_inode *ip = GFS2_I(inode);
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+ struct gfs2_skip_data *data = opaque;
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+
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+ if (ip->i_no_addr == data->no_addr) {
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+ if (data->non_block &&
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+ inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)) {
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+ data->skipped = 1;
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+ return 0;
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+ }
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+ return 1;
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+ }
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+ return 0;
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+}
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+
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+static int iget_set(struct inode *inode, void *opaque)
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+{
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+ struct gfs2_inode *ip = GFS2_I(inode);
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+ struct gfs2_skip_data *data = opaque;
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+
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+ if (data->skipped)
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+ return -ENOENT;
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+ inode->i_ino = (unsigned long)(data->no_addr);
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+ ip->i_no_addr = data->no_addr;
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+ return 0;
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+}
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+
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+struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr, int non_block)
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+{
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+ unsigned long hash = (unsigned long)no_addr;
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+ struct gfs2_skip_data data;
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+
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+ data.no_addr = no_addr;
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+ data.skipped = 0;
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+ data.non_block = non_block;
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+ return ilookup5(sb, hash, iget_test, &data);
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+}
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+
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+static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr,
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+ int non_block)
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+{
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+ struct gfs2_skip_data data;
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+ unsigned long hash = (unsigned long)no_addr;
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+
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+ data.no_addr = no_addr;
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+ data.skipped = 0;
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+ data.non_block = non_block;
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+ return iget5_locked(sb, hash, iget_test, iget_set, &data);
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+}
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+/**
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+ * gfs2_set_iop - Sets inode operations
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+ * @inode: The inode with correct i_mode filled in
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+ *
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+ * GFS2 lookup code fills in vfs inode contents based on info obtained
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+ * from directory entry inside gfs2_inode_lookup().
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+ */
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+
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+static void gfs2_set_iop(struct inode *inode)
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+{
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+ struct gfs2_sbd *sdp = GFS2_SB(inode);
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+ umode_t mode = inode->i_mode;
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+
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+ if (S_ISREG(mode)) {
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+ inode->i_op = &gfs2_file_iops;
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+ if (gfs2_localflocks(sdp))
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+ inode->i_fop = &gfs2_file_fops_nolock;
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+ else
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+ inode->i_fop = &gfs2_file_fops;
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+ } else if (S_ISDIR(mode)) {
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+ inode->i_op = &gfs2_dir_iops;
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+ if (gfs2_localflocks(sdp))
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+ inode->i_fop = &gfs2_dir_fops_nolock;
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+ else
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+ inode->i_fop = &gfs2_dir_fops;
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+ } else if (S_ISLNK(mode)) {
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+ inode->i_op = &gfs2_symlink_iops;
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+ } else {
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+ inode->i_op = &gfs2_file_iops;
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+ init_special_inode(inode, inode->i_mode, inode->i_rdev);
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+ }
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+}
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+
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+/**
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+ * gfs2_inode_lookup - Lookup an inode
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+ * @sb: The super block
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+ * @no_addr: The inode number
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+ * @type: The type of the inode
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+ * non_block: Can we block on inodes that are being freed?
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+ *
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+ * Returns: A VFS inode, or an error
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+ */
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+
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+struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
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+ u64 no_addr, u64 no_formal_ino, int non_block)
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+{
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+ struct inode *inode;
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+ struct gfs2_inode *ip;
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+ struct gfs2_glock *io_gl = NULL;
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+ int error;
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+
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+ inode = gfs2_iget(sb, no_addr, non_block);
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+ ip = GFS2_I(inode);
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+
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+ if (!inode)
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+ return ERR_PTR(-ENOBUFS);
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+
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+ if (inode->i_state & I_NEW) {
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+ struct gfs2_sbd *sdp = GFS2_SB(inode);
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+ ip->i_no_formal_ino = no_formal_ino;
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+
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+ error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
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+ if (unlikely(error))
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+ goto fail;
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+ ip->i_gl->gl_object = ip;
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+
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+ error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
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+ if (unlikely(error))
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+ goto fail_put;
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+
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+ set_bit(GIF_INVALID, &ip->i_flags);
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+ error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
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+ if (unlikely(error))
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+ goto fail_iopen;
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+
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+ ip->i_iopen_gh.gh_gl->gl_object = ip;
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+ gfs2_glock_put(io_gl);
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+ io_gl = NULL;
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+
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+ if (type == DT_UNKNOWN) {
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+ /* Inode glock must be locked already */
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+ error = gfs2_inode_refresh(GFS2_I(inode));
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+ if (error)
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+ goto fail_refresh;
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+ } else {
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+ inode->i_mode = DT2IF(type);
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+ }
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+
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+ gfs2_set_iop(inode);
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+ unlock_new_inode(inode);
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+ }
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+
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+ return inode;
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+
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+fail_refresh:
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+ ip->i_iopen_gh.gh_gl->gl_object = NULL;
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+ gfs2_glock_dq_uninit(&ip->i_iopen_gh);
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+fail_iopen:
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+ if (io_gl)
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+ gfs2_glock_put(io_gl);
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+fail_put:
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+ ip->i_gl->gl_object = NULL;
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+ gfs2_glock_put(ip->i_gl);
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+fail:
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+ iget_failed(inode);
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+ return ERR_PTR(error);
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+}
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+
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+struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
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+ u64 *no_formal_ino, unsigned int blktype)
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+{
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+ struct super_block *sb = sdp->sd_vfs;
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+ struct gfs2_holder i_gh;
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+ struct inode *inode = NULL;
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+ int error;
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+
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+ /* Must not read in block until block type is verified */
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+ error = gfs2_glock_nq_num(sdp, no_addr, &gfs2_inode_glops,
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+ LM_ST_EXCLUSIVE, GL_SKIP, &i_gh);
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+ if (error)
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+ return ERR_PTR(error);
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+
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+ error = gfs2_check_blk_type(sdp, no_addr, blktype);
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+ if (error)
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+ goto fail;
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+
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+ inode = gfs2_inode_lookup(sb, DT_UNKNOWN, no_addr, 0, 1);
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+ if (IS_ERR(inode))
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+ goto fail;
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+
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+ /* Two extra checks for NFS only */
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+ if (no_formal_ino) {
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+ error = -ESTALE;
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+ if (GFS2_I(inode)->i_no_formal_ino != *no_formal_ino)
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+ goto fail_iput;
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+
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+ error = -EIO;
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+ if (GFS2_I(inode)->i_diskflags & GFS2_DIF_SYSTEM)
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+ goto fail_iput;
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+
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+ error = 0;
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+ }
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+
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+fail:
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+ gfs2_glock_dq_uninit(&i_gh);
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+ return error ? ERR_PTR(error) : inode;
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+fail_iput:
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+ iput(inode);
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+ goto fail;
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+}
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+
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+
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+struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
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+{
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+ struct qstr qstr;
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+ struct inode *inode;
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+ gfs2_str2qstr(&qstr, name);
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+ inode = gfs2_lookupi(dip, &qstr, 1);
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+ /* gfs2_lookupi has inconsistent callers: vfs
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+ * related routines expect NULL for no entry found,
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+ * gfs2_lookup_simple callers expect ENOENT
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+ * and do not check for NULL.
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+ */
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+ if (inode == NULL)
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+ return ERR_PTR(-ENOENT);
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+ else
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+ return inode;
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+}
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+
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+
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+/**
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+ * gfs2_lookupi - Look up a filename in a directory and return its inode
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+ * @d_gh: An initialized holder for the directory glock
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+ * @name: The name of the inode to look for
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+ * @is_root: If 1, ignore the caller's permissions
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+ * @i_gh: An uninitialized holder for the new inode glock
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+ *
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+ * This can be called via the VFS filldir function when NFS is doing
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+ * a readdirplus and the inode which its intending to stat isn't
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+ * already in cache. In this case we must not take the directory glock
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+ * again, since the readdir call will have already taken that lock.
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+ *
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+ * Returns: errno
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+ */
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+
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+struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
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+ int is_root)
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+{
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+ struct super_block *sb = dir->i_sb;
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+ struct gfs2_inode *dip = GFS2_I(dir);
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+ struct gfs2_holder d_gh;
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+ int error = 0;
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+ struct inode *inode = NULL;
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+ int unlock = 0;
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+
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+ if (!name->len || name->len > GFS2_FNAMESIZE)
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+ return ERR_PTR(-ENAMETOOLONG);
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+
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+ if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
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+ (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
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+ dir == sb->s_root->d_inode)) {
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+ igrab(dir);
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+ return dir;
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+ }
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+
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+ if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
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+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
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+ if (error)
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+ return ERR_PTR(error);
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+ unlock = 1;
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+ }
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+
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+ if (!is_root) {
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+ error = gfs2_permission(dir, MAY_EXEC, 0);
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+ if (error)
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+ goto out;
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+ }
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+
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+ inode = gfs2_dir_search(dir, name);
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+ if (IS_ERR(inode))
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+ error = PTR_ERR(inode);
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+out:
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+ if (unlock)
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+ gfs2_glock_dq_uninit(&d_gh);
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+ if (error == -ENOENT)
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+ return NULL;
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+ return inode ? inode : ERR_PTR(error);
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+}
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+
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+/**
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+ * create_ok - OK to create a new on-disk inode here?
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+ * @dip: Directory in which dinode is to be created
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+ * @name: Name of new dinode
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+ * @mode:
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+ *
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+ * Returns: errno
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+ */
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+
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+static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
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+ unsigned int mode)
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+{
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+ int error;
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+
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+ error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC, 0);
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+ if (error)
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+ return error;
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+
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+ /* Don't create entries in an unlinked directory */
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+ if (!dip->i_inode.i_nlink)
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+ return -ENOENT;
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+
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+ error = gfs2_dir_check(&dip->i_inode, name, NULL);
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+ switch (error) {
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+ case -ENOENT:
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+ error = 0;
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+ break;
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+ case 0:
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+ return -EEXIST;
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+ default:
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+ return error;
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+ }
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+
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+ if (dip->i_entries == (u32)-1)
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+ return -EFBIG;
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+ if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
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+ return -EMLINK;
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+
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+ return 0;
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+}
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+
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+static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
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+ unsigned int *uid, unsigned int *gid)
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+{
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+ if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
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+ (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
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+ if (S_ISDIR(*mode))
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+ *mode |= S_ISUID;
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+ else if (dip->i_inode.i_uid != current_fsuid())
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+ *mode &= ~07111;
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+ *uid = dip->i_inode.i_uid;
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+ } else
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+ *uid = current_fsuid();
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+
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+ if (dip->i_inode.i_mode & S_ISGID) {
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+ if (S_ISDIR(*mode))
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+ *mode |= S_ISGID;
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+ *gid = dip->i_inode.i_gid;
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+ } else
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+ *gid = current_fsgid();
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+}
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+
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+static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
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+{
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+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
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+ int error;
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+
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+ if (gfs2_alloc_get(dip) == NULL)
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+ return -ENOMEM;
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+
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+ dip->i_alloc->al_requested = RES_DINODE;
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+ error = gfs2_inplace_reserve(dip);
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+ if (error)
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+ goto out;
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+
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+ error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
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+ if (error)
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+ goto out_ipreserv;
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+
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+ error = gfs2_alloc_di(dip, no_addr, generation);
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+
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+ gfs2_trans_end(sdp);
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+
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+out_ipreserv:
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+ gfs2_inplace_release(dip);
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+out:
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+ gfs2_alloc_put(dip);
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+ return error;
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+}
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+
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+/**
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+ * init_dinode - Fill in a new dinode structure
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+ * @dip: the directory this inode is being created in
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+ * @gl: The glock covering the new inode
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+ * @inum: the inode number
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+ * @mode: the file permissions
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+ * @uid:
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+ * @gid:
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+ *
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+ */
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+
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+static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
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+ const struct gfs2_inum_host *inum, unsigned int mode,
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+ unsigned int uid, unsigned int gid,
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+ const u64 *generation, dev_t dev, struct buffer_head **bhp)
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+{
|
|
|
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
|
|
|
+ struct gfs2_dinode *di;
|
|
|
+ struct buffer_head *dibh;
|
|
|
+ struct timespec tv = CURRENT_TIME;
|
|
|
+
|
|
|
+ dibh = gfs2_meta_new(gl, inum->no_addr);
|
|
|
+ gfs2_trans_add_bh(gl, dibh, 1);
|
|
|
+ gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
|
|
|
+ gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
|
|
|
+ di = (struct gfs2_dinode *)dibh->b_data;
|
|
|
+
|
|
|
+ di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
|
|
|
+ di->di_num.no_addr = cpu_to_be64(inum->no_addr);
|
|
|
+ di->di_mode = cpu_to_be32(mode);
|
|
|
+ di->di_uid = cpu_to_be32(uid);
|
|
|
+ di->di_gid = cpu_to_be32(gid);
|
|
|
+ di->di_nlink = 0;
|
|
|
+ di->di_size = 0;
|
|
|
+ di->di_blocks = cpu_to_be64(1);
|
|
|
+ di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
|
|
|
+ di->di_major = cpu_to_be32(MAJOR(dev));
|
|
|
+ di->di_minor = cpu_to_be32(MINOR(dev));
|
|
|
+ di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
|
|
|
+ di->di_generation = cpu_to_be64(*generation);
|
|
|
+ di->di_flags = 0;
|
|
|
+
|
|
|
+ if (S_ISREG(mode)) {
|
|
|
+ if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
|
|
|
+ gfs2_tune_get(sdp, gt_new_files_jdata))
|
|
|
+ di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
|
|
|
+ } else if (S_ISDIR(mode)) {
|
|
|
+ di->di_flags |= cpu_to_be32(dip->i_diskflags &
|
|
|
+ GFS2_DIF_INHERIT_JDATA);
|
|
|
+ }
|
|
|
+
|
|
|
+ di->__pad1 = 0;
|
|
|
+ di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
|
|
|
+ di->di_height = 0;
|
|
|
+ di->__pad2 = 0;
|
|
|
+ di->__pad3 = 0;
|
|
|
+ di->di_depth = 0;
|
|
|
+ di->di_entries = 0;
|
|
|
+ memset(&di->__pad4, 0, sizeof(di->__pad4));
|
|
|
+ di->di_eattr = 0;
|
|
|
+ di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
|
|
|
+ di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
|
|
|
+ di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
|
|
|
+ memset(&di->di_reserved, 0, sizeof(di->di_reserved));
|
|
|
+
|
|
|
+ set_buffer_uptodate(dibh);
|
|
|
+
|
|
|
+ *bhp = dibh;
|
|
|
+}
|
|
|
+
|
|
|
+static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
|
|
|
+ unsigned int mode, const struct gfs2_inum_host *inum,
|
|
|
+ const u64 *generation, dev_t dev, struct buffer_head **bhp)
|
|
|
+{
|
|
|
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
|
|
|
+ unsigned int uid, gid;
|
|
|
+ int error;
|
|
|
+
|
|
|
+ munge_mode_uid_gid(dip, &mode, &uid, &gid);
|
|
|
+ if (!gfs2_alloc_get(dip))
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ error = gfs2_quota_lock(dip, uid, gid);
|
|
|
+ if (error)
|
|
|
+ goto out;
|
|
|
+
|
|
|
+ error = gfs2_quota_check(dip, uid, gid);
|
|
|
+ if (error)
|
|
|
+ goto out_quota;
|
|
|
+
|
|
|
+ error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
|
|
|
+ if (error)
|
|
|
+ goto out_quota;
|
|
|
+
|
|
|
+ init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
|
|
|
+ gfs2_quota_change(dip, +1, uid, gid);
|
|
|
+ gfs2_trans_end(sdp);
|
|
|
+
|
|
|
+out_quota:
|
|
|
+ gfs2_quota_unlock(dip);
|
|
|
+out:
|
|
|
+ gfs2_alloc_put(dip);
|
|
|
+ return error;
|
|
|
+}
|
|
|
+
|
|
|
+static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
|
|
|
+ struct gfs2_inode *ip)
|
|
|
+{
|
|
|
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
|
|
|
+ struct gfs2_alloc *al;
|
|
|
+ int alloc_required;
|
|
|
+ struct buffer_head *dibh;
|
|
|
+ int error;
|
|
|
+
|
|
|
+ al = gfs2_alloc_get(dip);
|
|
|
+ if (!al)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
|
|
|
+ if (error)
|
|
|
+ goto fail;
|
|
|
+
|
|
|
+ error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
|
|
|
+ if (alloc_required < 0)
|
|
|
+ goto fail_quota_locks;
|
|
|
+ if (alloc_required) {
|
|
|
+ error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
|
|
|
+ if (error)
|
|
|
+ goto fail_quota_locks;
|
|
|
+
|
|
|
+ al->al_requested = sdp->sd_max_dirres;
|
|
|
+
|
|
|
+ error = gfs2_inplace_reserve(dip);
|
|
|
+ if (error)
|
|
|
+ goto fail_quota_locks;
|
|
|
+
|
|
|
+ error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
|
|
|
+ al->al_rgd->rd_length +
|
|
|
+ 2 * RES_DINODE +
|
|
|
+ RES_STATFS + RES_QUOTA, 0);
|
|
|
+ if (error)
|
|
|
+ goto fail_ipreserv;
|
|
|
+ } else {
|
|
|
+ error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
|
|
|
+ if (error)
|
|
|
+ goto fail_quota_locks;
|
|
|
+ }
|
|
|
+
|
|
|
+ error = gfs2_dir_add(&dip->i_inode, name, ip);
|
|
|
+ if (error)
|
|
|
+ goto fail_end_trans;
|
|
|
+
|
|
|
+ error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
+ if (error)
|
|
|
+ goto fail_end_trans;
|
|
|
+ ip->i_inode.i_nlink = 1;
|
|
|
+ gfs2_trans_add_bh(ip->i_gl, dibh, 1);
|
|
|
+ gfs2_dinode_out(ip, dibh->b_data);
|
|
|
+ brelse(dibh);
|
|
|
+ return 0;
|
|
|
+
|
|
|
+fail_end_trans:
|
|
|
+ gfs2_trans_end(sdp);
|
|
|
+
|
|
|
+fail_ipreserv:
|
|
|
+ if (dip->i_alloc->al_rgd)
|
|
|
+ gfs2_inplace_release(dip);
|
|
|
+
|
|
|
+fail_quota_locks:
|
|
|
+ gfs2_quota_unlock(dip);
|
|
|
+
|
|
|
+fail:
|
|
|
+ gfs2_alloc_put(dip);
|
|
|
+ return error;
|
|
|
+}
|
|
|
+
|
|
|
+static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
|
|
|
+ const struct qstr *qstr)
|
|
|
+{
|
|
|
+ int err;
|
|
|
+ size_t len;
|
|
|
+ void *value;
|
|
|
+ char *name;
|
|
|
+
|
|
|
+ err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
|
|
|
+ &name, &value, &len);
|
|
|
+
|
|
|
+ if (err) {
|
|
|
+ if (err == -EOPNOTSUPP)
|
|
|
+ return 0;
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+
|
|
|
+ err = __gfs2_xattr_set(&ip->i_inode, name, value, len, 0,
|
|
|
+ GFS2_EATYPE_SECURITY);
|
|
|
+ kfree(value);
|
|
|
+ kfree(name);
|
|
|
+
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * gfs2_createi - Create a new inode
|
|
|
+ * @ghs: An array of two holders
|
|
|
+ * @name: The name of the new file
|
|
|
+ * @mode: the permissions on the new inode
|
|
|
+ *
|
|
|
+ * @ghs[0] is an initialized holder for the directory
|
|
|
+ * @ghs[1] is the holder for the inode lock
|
|
|
+ *
|
|
|
+ * If the return value is not NULL, the glocks on both the directory and the new
|
|
|
+ * file are held. A transaction has been started and an inplace reservation
|
|
|
+ * is held, as well.
|
|
|
+ *
|
|
|
+ * Returns: An inode
|
|
|
+ */
|
|
|
+
|
|
|
+struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
|
|
|
+ unsigned int mode, dev_t dev)
|
|
|
+{
|
|
|
+ struct inode *inode = NULL;
|
|
|
+ struct gfs2_inode *dip = ghs->gh_gl->gl_object;
|
|
|
+ struct inode *dir = &dip->i_inode;
|
|
|
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
|
|
|
+ struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
|
|
|
+ int error;
|
|
|
+ u64 generation;
|
|
|
+ struct buffer_head *bh = NULL;
|
|
|
+
|
|
|
+ if (!name->len || name->len > GFS2_FNAMESIZE)
|
|
|
+ return ERR_PTR(-ENAMETOOLONG);
|
|
|
+
|
|
|
+ gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
|
|
|
+ error = gfs2_glock_nq(ghs);
|
|
|
+ if (error)
|
|
|
+ goto fail;
|
|
|
+
|
|
|
+ error = create_ok(dip, name, mode);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock;
|
|
|
+
|
|
|
+ error = alloc_dinode(dip, &inum.no_addr, &generation);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock;
|
|
|
+ inum.no_formal_ino = generation;
|
|
|
+
|
|
|
+ error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
|
|
|
+ LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock;
|
|
|
+
|
|
|
+ error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
|
|
|
+ inum.no_formal_ino, 0);
|
|
|
+ if (IS_ERR(inode))
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ error = gfs2_inode_refresh(GFS2_I(inode));
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ error = gfs2_acl_create(dip, inode);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ error = gfs2_security_init(dip, GFS2_I(inode), name);
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ error = link_dinode(dip, name, GFS2_I(inode));
|
|
|
+ if (error)
|
|
|
+ goto fail_gunlock2;
|
|
|
+
|
|
|
+ if (bh)
|
|
|
+ brelse(bh);
|
|
|
+ return inode;
|
|
|
+
|
|
|
+fail_gunlock2:
|
|
|
+ gfs2_glock_dq_uninit(ghs + 1);
|
|
|
+ if (inode && !IS_ERR(inode))
|
|
|
+ iput(inode);
|
|
|
+fail_gunlock:
|
|
|
+ gfs2_glock_dq(ghs);
|
|
|
+fail:
|
|
|
+ if (bh)
|
|
|
+ brelse(bh);
|
|
|
+ return ERR_PTR(error);
|
|
|
+}
|
|
|
/**
|
|
|
* gfs2_create - Create a file
|
|
|
* @dir: The directory in which to create the file
|
|
|
@@ -1000,6 +1669,48 @@ int gfs2_permission(struct inode *inode, int mask, unsigned int flags)
|
|
|
return error;
|
|
|
}
|
|
|
|
|
|
+static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
|
|
|
+{
|
|
|
+ struct inode *inode = &ip->i_inode;
|
|
|
+ struct buffer_head *dibh;
|
|
|
+ int error;
|
|
|
+
|
|
|
+ error = gfs2_meta_inode_buffer(ip, &dibh);
|
|
|
+ if (error)
|
|
|
+ return error;
|
|
|
+
|
|
|
+ setattr_copy(inode, attr);
|
|
|
+ mark_inode_dirty(inode);
|
|
|
+ gfs2_trans_add_bh(ip->i_gl, dibh, 1);
|
|
|
+ gfs2_dinode_out(ip, dibh->b_data);
|
|
|
+ brelse(dibh);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * gfs2_setattr_simple -
|
|
|
+ * @ip:
|
|
|
+ * @attr:
|
|
|
+ *
|
|
|
+ * Returns: errno
|
|
|
+ */
|
|
|
+
|
|
|
+int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
|
|
|
+{
|
|
|
+ int error;
|
|
|
+
|
|
|
+ if (current->journal_info)
|
|
|
+ return __gfs2_setattr_simple(ip, attr);
|
|
|
+
|
|
|
+ error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
|
|
|
+ if (error)
|
|
|
+ return error;
|
|
|
+
|
|
|
+ error = __gfs2_setattr_simple(ip, attr);
|
|
|
+ gfs2_trans_end(GFS2_SB(&ip->i_inode));
|
|
|
+ return error;
|
|
|
+}
|
|
|
+
|
|
|
static int setattr_chown(struct inode *inode, struct iattr *attr)
|
|
|
{
|
|
|
struct gfs2_inode *ip = GFS2_I(inode);
|
Steven Whitehouse