rk312x: add psci support

[firefly-linux-kernel-4.4.55.git] / fs / compat.c

diff --git a/fs/compat.c b/fs/compat.c
index fc3b55dce184a2637fcbf14d1dc313e61714ad5d..6af20de2c1a3c29d5cc7c251d8fb3fa2182de445 100644 (file)
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -832,6 +832,7 @@ struct compat_old_linux_dirent {
 };
 
 struct compat_readdir_callback {
+       struct dir_context ctx;
        struct compat_old_linux_dirent __user *dirent;
        int result;
 };
@@ -873,15 +874,15 @@ asmlinkage long compat_sys_old_readdir(unsigned int fd,
 {
        int error;
        struct fd f = fdget(fd);
-       struct compat_readdir_callback buf;
+       struct compat_readdir_callback buf = {
+               .ctx.actor = compat_fillonedir,
+               .dirent = dirent
+       };
 
        if (!f.file)
                return -EBADF;
 
-       buf.result = 0;
-       buf.dirent = dirent;
-
-       error = vfs_readdir(f.file, compat_fillonedir, &buf);
+       error = iterate_dir(f.file, &buf.ctx);
        if (buf.result)
                error = buf.result;
 
@@ -897,6 +898,7 @@ struct compat_linux_dirent {
 };
 
 struct compat_getdents_callback {
+       struct dir_context ctx;
        struct compat_linux_dirent __user *current_dir;
        struct compat_linux_dirent __user *previous;
        int count;
@@ -951,7 +953,11 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
 {
        struct fd f;
        struct compat_linux_dirent __user * lastdirent;
-       struct compat_getdents_callback buf;
+       struct compat_getdents_callback buf = {
+               .ctx.actor = compat_filldir,
+               .current_dir = dirent,
+               .count = count
+       };
        int error;
 
        if (!access_ok(VERIFY_WRITE, dirent, count))
@@ -961,17 +967,12 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
        if (!f.file)
                return -EBADF;
 
-       buf.current_dir = dirent;
-       buf.previous = NULL;
-       buf.count = count;
-       buf.error = 0;
-
-       error = vfs_readdir(f.file, compat_filldir, &buf);
+       error = iterate_dir(f.file, &buf.ctx);
        if (error >= 0)
                error = buf.error;
        lastdirent = buf.previous;
        if (lastdirent) {
-               if (put_user(f.file->f_pos, &lastdirent->d_off))
+               if (put_user(buf.ctx.pos, &lastdirent->d_off))
                        error = -EFAULT;
                else
                        error = count - buf.count;
@@ -983,6 +984,7 @@ asmlinkage long compat_sys_getdents(unsigned int fd,
 #ifndef __ARCH_OMIT_COMPAT_SYS_GETDENTS64
 
 struct compat_getdents_callback64 {
+       struct dir_context ctx;
        struct linux_dirent64 __user *current_dir;
        struct linux_dirent64 __user *previous;
        int count;
@@ -1036,7 +1038,11 @@ asmlinkage long compat_sys_getdents64(unsigned int fd,
 {
        struct fd f;
        struct linux_dirent64 __user * lastdirent;
-       struct compat_getdents_callback64 buf;
+       struct compat_getdents_callback64 buf = {
+               .ctx.actor = compat_filldir64,
+               .current_dir = dirent,
+               .count = count
+       };
        int error;
 
        if (!access_ok(VERIFY_WRITE, dirent, count))
@@ -1046,17 +1052,12 @@ asmlinkage long compat_sys_getdents64(unsigned int fd,
        if (!f.file)
                return -EBADF;
 
-       buf.current_dir = dirent;
-       buf.previous = NULL;
-       buf.count = count;
-       buf.error = 0;
-
-       error = vfs_readdir(f.file, compat_filldir64, &buf);
+       error = iterate_dir(f.file, &buf.ctx);
        if (error >= 0)
                error = buf.error;
        lastdirent = buf.previous;
        if (lastdirent) {
-               typeof(lastdirent->d_off) d_off = f.file->f_pos;
+               typeof(lastdirent->d_off) d_off = buf.ctx.pos;
                if (__put_user_unaligned(d_off, &lastdirent->d_off))
                        error = -EFAULT;
                else