mirror of https://github.com/vitalif/e2fsprogs
ext2fs_new_inode(): Add sanity check to assure a valid inode number
Add a sanity check to makesure that even if the superblock field s_first_inode is insane, that we won't return an invalid inode number. (The function will return the error EXT2_ET_INODE_ALLOC_FAIL in that case.) Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>bitmap-optimize
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1f790a7cc1
commit
a93d406960
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@ -120,6 +120,8 @@ errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir,
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start_inode = (dir_group * EXT2_INODES_PER_GROUP(fs->super)) + 1;
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if (start_inode < EXT2_FIRST_INODE(fs->super))
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start_inode = EXT2_FIRST_INODE(fs->super);
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if (start_inode > fs->super->s_inodes_count)
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return EXT2_ET_INODE_ALLOC_FAIL;
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i = start_inode;
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do {
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