integrity/ima: switch to using __kernel_read
__kernel_read has a bunch of additional sanity checks, and this moves the set_fs out of non-core code. Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -188,19 +188,7 @@ DEFINE_LSM(integrity) = {
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int integrity_kernel_read(struct file *file, loff_t offset,
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void *addr, unsigned long count)
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{
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mm_segment_t old_fs;
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char __user *buf = (char __user *)addr;
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ssize_t ret;
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if (!(file->f_mode & FMODE_READ))
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return -EBADF;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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ret = __vfs_read(file, buf, count, &offset);
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set_fs(old_fs);
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return ret;
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return __kernel_read(file, addr, count, &offset);
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}
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/*
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