/* * linux/fs/ncpfs/symlink.c * * Code for allowing symbolic links on NCPFS (i.e. NetWare) * Symbolic links are not supported on native NetWare, so we use an * infrequently-used flag (Sh) and store a two-word magic header in * the file to make sure we don't accidentally use a non-link file * as a link. * * When using the NFS namespace, we set the mode to indicate a symlink and * don't bother with the magic numbers. * * from linux/fs/ext2/symlink.c * * Copyright (C) 1998-99, Frank A. Vorstenbosch * * ncpfs symlink handling code * NLS support (c) 1999 Petr Vandrovec * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info * */ #include #include #include #include #include #include #include #include "ncp_fs.h" /* these magic numbers must appear in the symlink file -- this makes it a bit more resilient against the magic attributes being set on random files. */ #define NCP_SYMLINK_MAGIC0 cpu_to_le32(0x6c6d7973) /* "symlnk->" */ #define NCP_SYMLINK_MAGIC1 cpu_to_le32(0x3e2d6b6e) /* ----- read a symbolic link ------------------------------------------ */ static int ncp_symlink_readpage(struct file *file, struct page *page) { struct inode *inode = page->mapping->host; int error, length, len; char *link, *rawlink; char *buf = kmap(page); error = -ENOMEM; rawlink = kmalloc(NCP_MAX_SYMLINK_SIZE, GFP_KERNEL); if (!rawlink) goto fail; if (ncp_make_open(inode,O_RDONLY)) goto failEIO; error=ncp_read_kernel(NCP_SERVER(inode),NCP_FINFO(inode)->file_handle, 0,NCP_MAX_SYMLINK_SIZE,rawlink,&length); ncp_inode_close(inode); /* Close file handle if no other users... */ ncp_make_closed(inode); if (error) goto failEIO; if (NCP_FINFO(inode)->flags & NCPI_KLUDGE_SYMLINK) { if (lengthvolNumber)) kludge = 0; else #ifdef CONFIG_NCPFS_EXTRAS if (NCP_SERVER(dir)->m.flags & NCP_MOUNT_SYMLINKS) kludge = 1; else #endif /* EPERM is returned by VFS if symlink procedure does not exist */ return -EPERM; rawlink = kmalloc(NCP_MAX_SYMLINK_SIZE, GFP_KERNEL); if (!rawlink) return -ENOMEM; if (kludge) { mode = 0; attr = aSHARED | aHIDDEN; ((__le32 *)rawlink)[0]=NCP_SYMLINK_MAGIC0; ((__le32 *)rawlink)[1]=NCP_SYMLINK_MAGIC1; hdr = 8; } else { mode = S_IFLNK | S_IRWXUGO; attr = 0; hdr = 0; } length = strlen(symname); /* map to/from server charset, do not touch upper/lower case as symlink can point out of ncp filesystem */ outlen = NCP_MAX_SYMLINK_SIZE - hdr; err = ncp_io2vol(NCP_SERVER(dir), rawlink + hdr, &outlen, symname, length, 0); if (err) goto failfree; outlen += hdr; err = -EIO; if (ncp_create_new(dir,dentry,mode,0,attr)) { goto failfree; } inode=d_inode(dentry); if (ncp_make_open(inode, O_WRONLY)) goto failfree; if (ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle, 0, outlen, rawlink, &i) || i!=outlen) { goto fail; } ncp_inode_close(inode); ncp_make_closed(inode); kfree(rawlink); return 0; fail:; ncp_inode_close(inode); ncp_make_closed(inode); failfree:; kfree(rawlink); return err; } /* ----- EOF ----- */ option>space:mode:
authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-17 13:46:29 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:33 +0800
commit11e3b725cfc282efe9d4a354153e99d86a16af08 (patch)
tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /sound/firewire/oxfw/oxfw-command.c
parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'sound/firewire/oxfw/oxfw-command.c')