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[MTD] Disconnect struct mtd_info from ABI
mtdchar.c direcly copied part of struct mtd_info to userspace, thereby implicitly making it part of the ABI. With this patch, struct mtd_info is independent of the ABI and can have its fields removed, reordered, etc. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
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1 changed files with 10 additions and 1 deletions
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@ -380,6 +380,7 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
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void __user *argp = (void __user *)arg;
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void __user *argp = (void __user *)arg;
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int ret = 0;
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int ret = 0;
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u_long size;
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u_long size;
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struct mtd_info_user info;
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DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
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DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
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@ -415,7 +416,15 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
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}
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}
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case MEMGETINFO:
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case MEMGETINFO:
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if (copy_to_user(argp, mtd, sizeof(struct mtd_info_user)))
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info.type = mtd->type;
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info.flags = mtd->flags;
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info.size = mtd->size;
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info.erasesize = mtd->erasesize;
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info.writesize = mtd->writesize;
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info.oobsize = mtd->oobsize;
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info.ecctype = mtd->ecctype;
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info.eccsize = mtd->eccsize;
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if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
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return -EFAULT;
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return -EFAULT;
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break;
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break;
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