stat->uid = inode->i_uid;
stat->gid = inode->i_gid;
stat->rdev = inode->i_rdev;
+ stat->size = i_size_read(inode);
stat->atime = inode->i_atime;
stat->mtime = inode->i_mtime;
stat->ctime = inode->i_ctime;
- stat->size = i_size_read(inode);
- stat->blocks = inode->i_blocks;
stat->blksize = (1 << inode->i_blkbits);
+ stat->blocks = inode->i_blocks;
}
EXPORT_SYMBOL(generic_fillattr);
EXPORT_SYMBOL(vfs_getattr);
-int vfs_stat_fd(int dfd, char __user *name, struct kstat *stat)
+int vfs_fstat(unsigned int fd, struct kstat *stat)
{
- struct nameidata nd;
- int error;
+ struct file *f = fget(fd);
+ int error = -EBADF;
- error = __user_walk_fd(dfd, name, LOOKUP_FOLLOW, &nd);
- if (!error) {
- error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
- path_release(&nd);
+ if (f) {
+ error = vfs_getattr(f->f_path.mnt, f->f_path.dentry, stat);
+ fput(f);
}
return error;
}
+EXPORT_SYMBOL(vfs_fstat);
-int vfs_stat(char __user *name, struct kstat *stat)
+int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat,
+ int flag)
{
- return vfs_stat_fd(AT_FDCWD, name, stat);
-}
+ struct path path;
+ int error = -EINVAL;
+ int lookup_flags = 0;
-EXPORT_SYMBOL(vfs_stat);
+ if ((flag & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
+ AT_EMPTY_PATH)) != 0)
+ goto out;
-int vfs_lstat_fd(int dfd, char __user *name, struct kstat *stat)
-{
- struct nameidata nd;
- int error;
+ if (!(flag & AT_SYMLINK_NOFOLLOW))
+ lookup_flags |= LOOKUP_FOLLOW;
+ if (flag & AT_EMPTY_PATH)
+ lookup_flags |= LOOKUP_EMPTY;
- error = __user_walk_fd(dfd, name, 0, &nd);
- if (!error) {
- error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
- path_release(&nd);
- }
+ error = user_path_at(dfd, filename, lookup_flags, &path);
+ if (error)
+ goto out;
+
+ error = vfs_getattr(path.mnt, path.dentry, stat);
+ path_put(&path);
+out:
return error;
}
+EXPORT_SYMBOL(vfs_fstatat);
-int vfs_lstat(char __user *name, struct kstat *stat)
+int vfs_stat(const char __user *name, struct kstat *stat)
{
- return vfs_lstat_fd(AT_FDCWD, name, stat);
+ return vfs_fstatat(AT_FDCWD, name, stat, 0);
}
+EXPORT_SYMBOL(vfs_stat);
-EXPORT_SYMBOL(vfs_lstat);
-
-int vfs_fstat(unsigned int fd, struct kstat *stat)
+int vfs_lstat(const char __user *name, struct kstat *stat)
{
- struct file *f = fget(fd);
- int error = -EBADF;
-
- if (f) {
- error = vfs_getattr(f->f_path.mnt, f->f_path.dentry, stat);
- fput(f);
- }
- return error;
+ return vfs_fstatat(AT_FDCWD, name, stat, AT_SYMLINK_NOFOLLOW);
}
+EXPORT_SYMBOL(vfs_lstat);
-EXPORT_SYMBOL(vfs_fstat);
#ifdef __ARCH_WANT_OLD_STAT
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
-asmlinkage long sys_stat(char __user * filename, struct __old_kernel_stat __user * statbuf)
+SYSCALL_DEFINE2(stat, const char __user *, filename,
+ struct __old_kernel_stat __user *, statbuf)
{
struct kstat stat;
- int error = vfs_stat_fd(AT_FDCWD, filename, &stat);
+ int error;
- if (!error)
- error = cp_old_stat(&stat, statbuf);
+ error = vfs_stat(filename, &stat);
+ if (error)
+ return error;
- return error;
+ return cp_old_stat(&stat, statbuf);
}
-asmlinkage long sys_lstat(char __user * filename, struct __old_kernel_stat __user * statbuf)
+
+SYSCALL_DEFINE2(lstat, const char __user *, filename,
+ struct __old_kernel_stat __user *, statbuf)
{
struct kstat stat;
- int error = vfs_lstat_fd(AT_FDCWD, filename, &stat);
+ int error;
- if (!error)
- error = cp_old_stat(&stat, statbuf);
+ error = vfs_lstat(filename, &stat);
+ if (error)
+ return error;
- return error;
+ return cp_old_stat(&stat, statbuf);
}
-asmlinkage long sys_fstat(unsigned int fd, struct __old_kernel_stat __user * statbuf)
+
+SYSCALL_DEFINE2(fstat, unsigned int, fd, struct __old_kernel_stat __user *, statbuf)
{
struct kstat stat;
int error = vfs_fstat(fd, &stat);
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
-asmlinkage long sys_newstat(char __user *filename, struct stat __user *statbuf)
+SYSCALL_DEFINE2(newstat, const char __user *, filename,
+ struct stat __user *, statbuf)
{
struct kstat stat;
- int error = vfs_stat_fd(AT_FDCWD, filename, &stat);
-
- if (!error)
- error = cp_new_stat(&stat, statbuf);
+ int error = vfs_stat(filename, &stat);
- return error;
+ if (error)
+ return error;
+ return cp_new_stat(&stat, statbuf);
}
-asmlinkage long sys_newlstat(char __user *filename, struct stat __user *statbuf)
+SYSCALL_DEFINE2(newlstat, const char __user *, filename,
+ struct stat __user *, statbuf)
{
struct kstat stat;
- int error = vfs_lstat_fd(AT_FDCWD, filename, &stat);
+ int error;
- if (!error)
- error = cp_new_stat(&stat, statbuf);
+ error = vfs_lstat(filename, &stat);
+ if (error)
+ return error;
- return error;
+ return cp_new_stat(&stat, statbuf);
}
#if !defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_SYS_NEWFSTATAT)
-asmlinkage long sys_newfstatat(int dfd, char __user *filename,
- struct stat __user *statbuf, int flag)
+SYSCALL_DEFINE4(newfstatat, int, dfd, const char __user *, filename,
+ struct stat __user *, statbuf, int, flag)
{
struct kstat stat;
- int error = -EINVAL;
-
- if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
- goto out;
-
- if (flag & AT_SYMLINK_NOFOLLOW)
- error = vfs_lstat_fd(dfd, filename, &stat);
- else
- error = vfs_stat_fd(dfd, filename, &stat);
-
- if (!error)
- error = cp_new_stat(&stat, statbuf);
+ int error;
-out:
- return error;
+ error = vfs_fstatat(dfd, filename, &stat, flag);
+ if (error)
+ return error;
+ return cp_new_stat(&stat, statbuf);
}
#endif
-asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf)
+SYSCALL_DEFINE2(newfstat, unsigned int, fd, struct stat __user *, statbuf)
{
struct kstat stat;
int error = vfs_fstat(fd, &stat);
return error;
}
-asmlinkage long sys_readlinkat(int dfd, const char __user *path,
- char __user *buf, int bufsiz)
+SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname,
+ char __user *, buf, int, bufsiz)
{
- struct nameidata nd;
+ struct path path;
int error;
+ int empty = 0;
if (bufsiz <= 0)
return -EINVAL;
- error = __user_walk_fd(dfd, path, 0, &nd);
+ error = user_path_at_empty(dfd, pathname, LOOKUP_EMPTY, &path, &empty);
if (!error) {
- struct inode *inode = nd.path.dentry->d_inode;
+ struct inode *inode = path.dentry->d_inode;
- error = -EINVAL;
- if (inode->i_op && inode->i_op->readlink) {
- error = security_inode_readlink(nd.path.dentry);
+ error = empty ? -ENOENT : -EINVAL;
+ if (inode->i_op->readlink) {
+ error = security_inode_readlink(path.dentry);
if (!error) {
- touch_atime(nd.path.mnt, nd.path.dentry);
- error = inode->i_op->readlink(nd.path.dentry,
+ touch_atime(path.mnt, path.dentry);
+ error = inode->i_op->readlink(path.dentry,
buf, bufsiz);
}
}
- path_release(&nd);
+ path_put(&path);
}
return error;
}
-asmlinkage long sys_readlink(const char __user *path, char __user *buf,
- int bufsiz)
+SYSCALL_DEFINE3(readlink, const char __user *, path, char __user *, buf,
+ int, bufsiz)
{
return sys_readlinkat(AT_FDCWD, path, buf, bufsiz);
}
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
-asmlinkage long sys_stat64(char __user * filename, struct stat64 __user * statbuf)
+SYSCALL_DEFINE2(stat64, const char __user *, filename,
+ struct stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_stat(filename, &stat);
return error;
}
-asmlinkage long sys_lstat64(char __user * filename, struct stat64 __user * statbuf)
+
+SYSCALL_DEFINE2(lstat64, const char __user *, filename,
+ struct stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_lstat(filename, &stat);
return error;
}
-asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user * statbuf)
+
+SYSCALL_DEFINE2(fstat64, unsigned long, fd, struct stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_fstat(fd, &stat);
return error;
}
-asmlinkage long sys_fstatat64(int dfd, char __user *filename,
- struct stat64 __user *statbuf, int flag)
+SYSCALL_DEFINE4(fstatat64, int, dfd, const char __user *, filename,
+ struct stat64 __user *, statbuf, int, flag)
{
struct kstat stat;
- int error = -EINVAL;
-
- if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
- goto out;
-
- if (flag & AT_SYMLINK_NOFOLLOW)
- error = vfs_lstat_fd(dfd, filename, &stat);
- else
- error = vfs_stat_fd(dfd, filename, &stat);
-
- if (!error)
- error = cp_new_stat64(&stat, statbuf);
+ int error;
-out:
- return error;
+ error = vfs_fstatat(dfd, filename, &stat, flag);
+ if (error)
+ return error;
+ return cp_new_stat64(&stat, statbuf);
}
#endif /* __ARCH_WANT_STAT64 */
-void inode_add_bytes(struct inode *inode, loff_t bytes)
+/* Caller is here responsible for sufficient locking (ie. inode->i_lock) */
+void __inode_add_bytes(struct inode *inode, loff_t bytes)
{
- spin_lock(&inode->i_lock);
inode->i_blocks += bytes >> 9;
bytes &= 511;
inode->i_bytes += bytes;
inode->i_blocks++;
inode->i_bytes -= 512;
}
+}
+
+void inode_add_bytes(struct inode *inode, loff_t bytes)
+{
+ spin_lock(&inode->i_lock);
+ __inode_add_bytes(inode, bytes);
spin_unlock(&inode->i_lock);
}
Code Review / linux-2.6.git / blobdiff