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switch readdir/getdents to fget_light/fput_light

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-04-21 18:40:32 -04:00
parent c2bd6c11cd
commit 863ced7fe7
2 changed files with 28 additions and 38 deletions
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33
fs/readdir.c
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@@ -108,11 +108,11 @@ SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
int error;
struct file * file;
struct readdir_callback buf;
int fput_needed;
error = -EBADF;
file = fget(fd);
file = fget_light(fd, &fput_needed);
if (!file)
goto out;
return -EBADF;
buf.result = 0;
buf.dirent = dirent;
@@ -121,8 +121,7 @@ SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
if (buf.result)
error = buf.result;
fput(file);
out:
fput_light(file, fput_needed);
return error;
}
@@ -195,16 +194,15 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd,
struct file * file;
struct linux_dirent __user * lastdirent;
struct getdents_callback buf;
int fput_needed;
int error;
error = -EFAULT;
if (!access_ok(VERIFY_WRITE, dirent, count))
goto out;
return -EFAULT;
error = -EBADF;
file = fget(fd);
file = fget_light(fd, &fput_needed);
if (!file)
goto out;
return -EBADF;
buf.current_dir = dirent;
buf.previous = NULL;
@@ -221,8 +219,7 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd,
else
error = count - buf.count;
}
fput(file);
out:
fput_light(file, fput_needed);
return error;
}
@@ -278,16 +275,15 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd,
struct file * file;
struct linux_dirent64 __user * lastdirent;
struct getdents_callback64 buf;
int fput_needed;
int error;
error = -EFAULT;
if (!access_ok(VERIFY_WRITE, dirent, count))
goto out;
return -EFAULT;
error = -EBADF;
file = fget(fd);
file = fget_light(fd, &fput_needed);
if (!file)
goto out;
return -EBADF;
buf.current_dir = dirent;
buf.previous = NULL;
@@ -305,7 +301,6 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd,
else
error = count - buf.count;
}
fput(file);
out:
fput_light(file, fput_needed);
return error;
}