X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fstat.c;h=075694e31d8b62fbcf6c935fd0b74220844abfe6;hb=b2c0cea6b1cb210e962f07047df602875564069e;hp=d712a0dfb50ff6076fe5b02178ad8c2c1ff939b5;hpb=002c8976ee537724b20a5e179d9b349309438836;p=safe%2Fjmp%2Flinux-2.6

diff --git a/fs/stat.c b/fs/stat.c
index d712a0d..075694e 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -55,59 +55,54 @@ int vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 
 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 path path;
-	int error;
+	struct file *f = fget(fd);
+	int error = -EBADF;
 
-	error = user_path_at(dfd, name, LOOKUP_FOLLOW, &path);
-	if (!error) {
-		error = vfs_getattr(path.mnt, path.dentry, stat);
-		path_put(&path);
+	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, 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) != 0)
+		goto out;
 
-int vfs_lstat_fd(int dfd, char __user *name, struct kstat *stat)
-{
-	struct path path;
-	int error;
+	if (!(flag & AT_SYMLINK_NOFOLLOW))
+		lookup_flags |= LOOKUP_FOLLOW;
 
-	error = user_path_at(dfd, name, 0, &path);
-	if (!error) {
-		error = vfs_getattr(path.mnt, path.dentry, stat);
-		path_put(&path);
-	}
+	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(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(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
 
@@ -155,23 +150,25 @@ static int cp_old_stat(struct kstat *stat, struct __old_kernel_stat __user * sta
 SYSCALL_DEFINE2(stat, 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);
 }
 
 SYSCALL_DEFINE2(lstat, 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);
 }
 
 SYSCALL_DEFINE2(fstat, unsigned int, fd, struct __old_kernel_stat __user *, statbuf)
@@ -240,45 +237,36 @@ static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
 SYSCALL_DEFINE2(newstat, 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);
 }
 
 SYSCALL_DEFINE2(newlstat, 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, 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
 
@@ -293,8 +281,8 @@ SYSCALL_DEFINE2(newfstat, unsigned int, fd, struct stat __user *, statbuf)
 	return error;
 }
 
-asmlinkage long sys_readlinkat(int dfd, const char __user *pathname,
-				char __user *buf, int bufsiz)
+SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname,
+		char __user *, buf, int, bufsiz)
 {
 	struct path path;
 	int error;
@@ -400,25 +388,16 @@ SYSCALL_DEFINE2(fstat64, unsigned long, fd, struct stat64 __user *, statbuf)
 	return error;
 }
 
-asmlinkage long sys_fstatat64(int dfd, char __user *filename,
-			       struct stat64 __user *statbuf, int flag)
+SYSCALL_DEFINE4(fstatat64, int, dfd, 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 */