diff options
Diffstat (limited to 'target/linux/generic/patches-4.9/141-jffs2-add-RENAME_EXCHANGE-support.patch')
| -rw-r--r-- | target/linux/generic/patches-4.9/141-jffs2-add-RENAME_EXCHANGE-support.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/141-jffs2-add-RENAME_EXCHANGE-support.patch b/target/linux/generic/patches-4.9/141-jffs2-add-RENAME_EXCHANGE-support.patch new file mode 100644 index 0000000..016edff --- /dev/null +++ b/target/linux/generic/patches-4.9/141-jffs2-add-RENAME_EXCHANGE-support.patch @@ -0,0 +1,58 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sat, 25 Apr 2015 12:41:32 +0200 +Subject: [PATCH] jffs2: add RENAME_EXCHANGE support + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/fs/jffs2/dir.c ++++ b/fs/jffs2/dir.c +@@ -784,7 +784,7 @@ static int jffs2_rename (struct inode *o + uint8_t type; + uint32_t now; + +- if (flags & ~(RENAME_NOREPLACE|RENAME_WHITEOUT)) ++ if (flags & ~(RENAME_NOREPLACE|RENAME_WHITEOUT|RENAME_EXCHANGE)) + return -EINVAL; + + /* The VFS will check for us and prevent trying to rename a +@@ -792,7 +792,7 @@ static int jffs2_rename (struct inode *o + * the VFS can't check whether the victim is empty. The filesystem + * needs to do that for itself. + */ +- if (d_really_is_positive(new_dentry)) { ++ if (d_really_is_positive(new_dentry) && !(flags & RENAME_EXCHANGE)) { + victim_f = JFFS2_INODE_INFO(d_inode(new_dentry)); + if (d_is_dir(new_dentry)) { + struct jffs2_full_dirent *fd; +@@ -827,7 +827,7 @@ static int jffs2_rename (struct inode *o + if (ret) + return ret; + +- if (victim_f) { ++ if (victim_f && !(flags & RENAME_EXCHANGE)) { + /* There was a victim. Kill it off nicely */ + if (d_is_dir(new_dentry)) + clear_nlink(d_inode(new_dentry)); +@@ -853,6 +853,12 @@ static int jffs2_rename (struct inode *o + if (flags & RENAME_WHITEOUT) + /* Replace with whiteout */ + ret = jffs2_whiteout(old_dir_i, old_dentry); ++ else if (flags & RENAME_EXCHANGE) ++ /* Replace the original */ ++ ret = jffs2_do_link(c, JFFS2_INODE_INFO(old_dir_i), ++ d_inode(new_dentry)->i_ino, type, ++ old_dentry->d_name.name, old_dentry->d_name.len, ++ now); + else + /* Unlink the original */ + ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i), +@@ -884,7 +890,7 @@ static int jffs2_rename (struct inode *o + return ret; + } + +- if (d_is_dir(old_dentry)) ++ if (d_is_dir(old_dentry) && !(flags & RENAME_EXCHANGE)) + drop_nlink(old_dir_i); + + new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now); |