diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 3cdc5f78a406357a7e4bcbffe5783facd35c7236..431be0795b6bdf27c43ca34a093c52ca127a77af 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1016,7 +1016,7 @@ static int fuse_permission(struct inode *inode, int mask) exist. So if permissions are revoked this won't be noticed immediately, only after the attribute timeout has expired */ - } else if (mask & MAY_ACCESS) { + } else if (mask & (MAY_ACCESS | MAY_CHDIR)) { err = fuse_access(inode, mask); } else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) { if (!(inode->i_mode & S_IXUGO)) { diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index e60416d3f8188b548ec1d55e3438ea7e6f2c926f..832e9e2393248968b793df0302433c4e1f8b052f 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1953,7 +1953,7 @@ int nfs_permission(struct inode *inode, int mask) if ((mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0) goto out; /* Is this sys_access() ? */ - if (mask & MAY_ACCESS) + if (mask & (MAY_ACCESS | MAY_CHDIR)) goto force_lookup; switch (inode->i_mode & S_IFMT) { diff --git a/fs/open.c b/fs/open.c index a54ed85209c135a9767cc6ee3f73c4619a105f33..0d1fa3dc0efb53f0f42051d4dde9ac4a4503c876 100644 --- a/fs/open.c +++ b/fs/open.c @@ -366,7 +366,7 @@ SYSCALL_DEFINE1(chdir, const char __user *, filename) if (error) goto out; - error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_ACCESS); + error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR); if (error) goto dput_and_out; @@ -395,7 +395,7 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd) if (!S_ISDIR(inode->i_mode)) goto out_putf; - error = inode_permission(inode, MAY_EXEC | MAY_ACCESS); + error = inode_permission(inode, MAY_EXEC | MAY_CHDIR); if (!error) set_fs_pwd(current->fs, &file->f_path); out_putf: @@ -413,7 +413,7 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename) if (error) goto out; - error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_ACCESS); + error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR); if (error) goto dput_and_out; diff --git a/include/linux/fs.h b/include/linux/fs.h index 68ca1b0491af42051bb6e93f424b3741c1ed7278..7d94b72f034635c06e6bf623d9e13039d3b55b94 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -53,6 +53,7 @@ struct inodes_stat_t { #define MAY_APPEND 8 #define MAY_ACCESS 16 #define MAY_OPEN 32 +#define MAY_CHDIR 64 /* * flags in file.f_mode. Note that FMODE_READ and FMODE_WRITE must correspond