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Date: Fri, 26 Jan 2007 14:21:42 +0300 From: Alexey Dobriyan <adobriyan@...nvz.org> To: akpm@...l.org Cc: devel@...nvz.org, linux-kernel@...r.kernel.org Subject: [PATCH 1/3] lutimesat: simplify utime(2) Rewrite via do_utimes() like compat_sys_utime(). Signed-off-by: Alexey Dobriyan <adobriyan@...nvz.org> --- fs/utimes.c | 50 +++++++------------------------------------------- 1 file changed, 7 insertions(+), 43 deletions(-) --- a/fs/utimes.c +++ b/fs/utimes.c @@ -22,52 +22,16 @@ #ifdef __ARCH_WANT_SYS_UTIME */ asmlinkage long sys_utime(char __user * filename, struct utimbuf __user * times) { - int error; - struct nameidata nd; - struct inode * inode; - struct iattr newattrs; + struct timeval tv[2]; - error = user_path_walk(filename, &nd); - if (error) - goto out; - inode = nd.dentry->d_inode; - - error = -EROFS; - if (IS_RDONLY(inode)) - goto dput_and_out; - - /* Don't worry, the checks are done in inode_change_ok() */ - newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME; if (times) { - error = -EPERM; - if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) - goto dput_and_out; - - error = get_user(newattrs.ia_atime.tv_sec, ×->actime); - newattrs.ia_atime.tv_nsec = 0; - if (!error) - error = get_user(newattrs.ia_mtime.tv_sec, ×->modtime); - newattrs.ia_mtime.tv_nsec = 0; - if (error) - goto dput_and_out; - - newattrs.ia_valid |= ATTR_ATIME_SET | ATTR_MTIME_SET; - } else { - error = -EACCES; - if (IS_IMMUTABLE(inode)) - goto dput_and_out; - - if (current->fsuid != inode->i_uid && - (error = vfs_permission(&nd, MAY_WRITE)) != 0) - goto dput_and_out; + if (get_user(tv[0].tv_sec, ×->actime) || + get_user(tv[1].tv_sec, ×->modtime)) + return -EFAULT; + tv[0].tv_usec = 0; + tv[1].tv_usec = 0; } - mutex_lock(&inode->i_mutex); - error = notify_change(nd.dentry, &newattrs); - mutex_unlock(&inode->i_mutex); -dput_and_out: - path_release(&nd); -out: - return error; + return do_utimes(AT_FDCWD, filename, times ? tv : NULL); } #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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