/* Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup Copyright (C) Andrew Tridgell 1992-2000 Copyright (C) Luke Kenneth Casson Leighton 1996-2000 Modified by Jeremy Allison 1995. Copyright (C) Andrew Bartlett 2002-2003 Modified by Steve French (sfrench@us.ibm.com) 2002-2003 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include #include #include #include "cifs_fs_sb.h" #include "cifs_unicode.h" #include "cifspdu.h" #include "cifsglob.h" #include "cifs_debug.h" #include "cifsproto.h" #ifndef false #define false 0 #endif #ifndef true #define true 1 #endif /* following came from the other byteorder.h to avoid include conflicts */ #define CVAL(buf,pos) (((unsigned char *)(buf))[pos]) #define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8) #define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val))) static void str_to_key(unsigned char *str, unsigned char *key) { int i; key[0] = str[0] >> 1; key[1] = ((str[0] & 0x01) << 6) | (str[1] >> 2); key[2] = ((str[1] & 0x03) << 5) | (str[2] >> 3); key[3] = ((str[2] & 0x07) << 4) | (str[3] >> 4); key[4] = ((str[3] & 0x0F) << 3) | (str[4] >> 5); key[5] = ((str[4] & 0x1F) << 2) | (str[5] >> 6); key[6] = ((str[5] & 0x3F) << 1) | (str[6] >> 7); key[7] = str[6] & 0x7F; for (i = 0; i < 8; i++) key[i] = (key[i] << 1); } static int smbhash(unsigned char *out, const unsigned char *in, unsigned char *key) { unsigned char key2[8]; struct crypto_cipher *tfm_des; str_to_key(key, key2); tfm_des = crypto_alloc_cipher("des", 0, 0); if (IS_ERR(tfm_des)) { cifs_dbg(VFS, "could not allocate des crypto API\n"); return PTR_ERR(tfm_des); } crypto_cipher_setkey(tfm_des, key2, 8); crypto_cipher_encrypt_one(tfm_des, out, in); crypto_free_cipher(tfm_des); return 0; } static int E_P16(unsigned char *p14, unsigned char *p16) { int rc; unsigned char sp8[8] = { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 }; rc = smbhash(p16, sp8, p14); if (rc) return rc; rc = smbhash(p16 + 8, sp8, p14 + 7); return rc; } static int E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24) { int rc; rc = smbhash(p24, c8, p21); if (rc) return rc; rc = smbhash(p24 + 8, c8, p21 + 7); if (rc) return rc; rc = smbhash(p24 + 16, c8, p21 + 14); return rc; } /* produce a md4 message digest from data of length n bytes */ int mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len) { int rc; unsigned int size; struct crypto_shash *md4; struct sdesc *sdescmd4; md4 = crypto_alloc_shash("md4", 0, 0); if (IS_ERR(md4)) { rc = PTR_ERR(md4); cifs_dbg(VFS, "%s: Crypto md4 allocation error %d\n", __func__, rc); return rc; } size = sizeof(struct shash_desc) + crypto_shash_descsize(md4); sdescmd4 = kmalloc(size, GFP_KERNEL); if (!sdescmd4) { rc = -ENOMEM; goto mdfour_err; } sdescmd4->shash.tfm = md4; sdescmd4->shash.flags = 0x0; rc = crypto_shash_init(&sdescmd4->shash); if (rc) { cifs_dbg(VFS, "%s: Could not init md4 shash\n", __func__); goto mdfour_err; } rc = crypto_shash_update(&sdescmd4->shash, link_str, link_len); if (rc) { cifs_dbg(VFS, "%s: Could not update with link_str\n", __func__); goto mdfour_err; } rc = crypto_shash_final(&sdescmd4->shash, md4_hash); if (rc) cifs_dbg(VFS, "%s: Could not generate md4 hash\n", __func__); mdfour_err: crypto_free_shash(md4); kfree(sdescmd4); return rc; } /* This implements the X/Open SMB password encryption It takes a password, a 8 byte "crypt key" and puts 24 bytes of encrypted password into p24 */ /* Note that password must be uppercased and null terminated */ int SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24) { int rc; unsigned char p14[14], p16[16], p21[21]; memset(p14, '\0', 14); memset(p16, '\0', 16); memset(p21, '\0', 21); memcpy(p14, passwd, 14); rc = E_P16(p14, p16); if (rc) return rc; memcpy(p21, p16, 16); rc = E_P24(p21, c8, p24); return rc; } /* * Creates the MD4 Hash of the users password in NT UNICODE. */ int E_md4hash(const unsigned char *passwd, unsigned char *p16, const struct nls_table *codepage) { int rc; int len; __le16 wpwd[129]; /* Password cannot be longer than 128 characters */ if (passwd) /* Password must be converted to NT unicode */ len = cifs_strtoUTF16(wpwd, passwd, 128, codepage); else { len = 0; *wpwd = 0; /* Ensure string is null terminated */ } rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16)); memzero_explicit(wpwd, sizeof(wpwd)); return rc; } /* Does the NT MD4 hash then des encryption. */ int SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24, const struct nls_table *codepage) { int rc; unsigned char p16[16], p21[21]; memset(p16, '\0', 16); memset(p21, '\0', 21); rc = E_md4hash(passwd, p16, codepage); if (rc) { cifs_dbg(FYI, "%s Can't generate NT hash, error: %d\n", __func__, rc); return rc; } memcpy(p21, p16, 16); rc = E_P24(p21, c8, p24); return rc; } i/linux/net-next.git/diff/sound/soc/sirf/sirf-audio.c?id=0becc0ae5b42828785b589f686725ff5bc3b9b25&id2=24c2503255d35c269b67162c397a1a1c1e02f6ce'>diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/soc/sirf/sirf-audio.c')