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| author | Arnd Bergmann <arnd@arndb.de> | 2011-12-06 14:23:35 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-12-06 14:23:35 +0000 |
| commit | 3642a0a2c7d2d1949988d0fd004a8039c1f3d02f (patch) | |
| tree | e687c88b1b66ad51a6a6c529f7f328f2d3b625fa /fs/minix/inode.c | |
| parent | 58a273745fbb2fbd01d26e7a60f0acc8c1d99469 (diff) | |
| parent | b07fed455c883f07f8e847f5b0d79975b4dc8e7a (diff) | |
| download | olio-linux-3.10-3642a0a2c7d2d1949988d0fd004a8039c1f3d02f.tar.xz olio-linux-3.10-3642a0a2c7d2d1949988d0fd004a8039c1f3d02f.zip | |
Merge branch 'mxs/saif' into next/drivers
Conflicts:
drivers/net/ethernet/cadence/Kconfig
Diffstat (limited to 'fs/minix/inode.c')
| -rw-r--r-- | fs/minix/inode.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 64cdcd662ff..1d9e33966db 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -279,6 +279,27 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) else if (sbi->s_mount_state & MINIX_ERROR_FS) printk("MINIX-fs: mounting file system with errors, " "running fsck is recommended\n"); + + /* Apparently minix can create filesystems that allocate more blocks for + * the bitmaps than needed. We simply ignore that, but verify it didn't + * create one with not enough blocks and bail out if so. + */ + block = minix_blocks_needed(sbi->s_ninodes, s->s_blocksize); + if (sbi->s_imap_blocks < block) { + printk("MINIX-fs: file system does not have enough " + "imap blocks allocated. Refusing to mount\n"); + goto out_iput; + } + + block = minix_blocks_needed( + (sbi->s_nzones - (sbi->s_firstdatazone + 1)), + s->s_blocksize); + if (sbi->s_zmap_blocks < block) { + printk("MINIX-fs: file system does not have enough " + "zmap blocks allocated. Refusing to mount.\n"); + goto out_iput; + } + return 0; out_iput: @@ -339,10 +360,10 @@ static int minix_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_type = sb->s_magic; buf->f_bsize = sb->s_blocksize; buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; - buf->f_bfree = minix_count_free_blocks(sbi); + buf->f_bfree = minix_count_free_blocks(sb); buf->f_bavail = buf->f_bfree; buf->f_files = sbi->s_ninodes; - buf->f_ffree = minix_count_free_inodes(sbi); + buf->f_ffree = minix_count_free_inodes(sb); buf->f_namelen = sbi->s_namelen; buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); |