diff options
Diffstat (limited to 'target/linux/uml/patches-4.9')
6 files changed, 0 insertions, 646 deletions
diff --git a/target/linux/uml/patches-4.9/000-um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthre.patch b/target/linux/uml/patches-4.9/000-um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthre.patch deleted file mode 100644 index 02149eea7a..0000000000 --- a/target/linux/uml/patches-4.9/000-um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthre.patch +++ /dev/null @@ -1,130 +0,0 @@ -From f44f1e7da7c8e3f4575d5d61c4df978496903fcc Mon Sep 17 00:00:00 2001 -From: Florian Fainelli <f.fainelli@gmail.com> -Date: Tue, 23 May 2017 17:32:31 -0700 -Subject: [PATCH] um: Avoid longjmp/setjmp symbol clashes with libpthread.a - -[ Upstream commit f44f1e7da7c8e3f4575d5d61c4df978496903fcc ] - -Building a statically linked UML kernel on a Centos 6.9 host resulted in -the following linking failure (GCC 4.4, glibc-2.12): - -/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/libpthread.a(libpthread.o): -In function `siglongjmp': -(.text+0x8490): multiple definition of `longjmp' -arch/x86/um/built-in.o:/local/users/fainelli/openwrt/trunk/build_dir/target-x86_64_musl/linux-uml/linux-4.4.69/arch/x86/um/setjmp_64.S:44: -first defined here -/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/libpthread.a(libpthread.o): -In function `sem_open': -(.text+0x77cd): warning: the use of `mktemp' is dangerous, better use -`mkstemp' -collect2: ld returned 1 exit status -make[4]: *** [vmlinux] Error 1 - -Adopt a solution similar to the one done for vmap where we define -longjmp/setjmp to be kernel_longjmp/setjmp. In the process, make sure we -do rename the functions in arch/x86/um/setjmp_*.S accordingly. - -Fixes: a7df4716d195 ("um: link with -lpthread") -Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - arch/um/Makefile | 4 ++++ - arch/x86/um/setjmp_32.S | 16 ++++++++-------- - arch/x86/um/setjmp_64.S | 16 ++++++++-------- - 3 files changed, 20 insertions(+), 16 deletions(-) - ---- a/arch/um/Makefile -+++ b/arch/um/Makefile -@@ -59,10 +59,14 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_D - # Same things for in6addr_loopback and mktime - found in libc. For these two we - # only get link-time error, luckily. - # -+# -Dlongjmp=kernel_longjmp prevents anything from referencing the libpthread.a -+# embedded copy of longjmp, same thing for setjmp. -+# - # These apply to USER_CFLAGS to. - - KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ - $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ -+ -Dlongjmp=kernel_longjmp -Dsetjmp=kernel_setjmp \ - -Din6addr_loopback=kernel_in6addr_loopback \ - -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr - ---- a/arch/x86/um/setjmp_32.S -+++ b/arch/x86/um/setjmp_32.S -@@ -16,9 +16,9 @@ - - .text - .align 4 -- .globl setjmp -- .type setjmp, @function --setjmp: -+ .globl kernel_setjmp -+ .type kernel_setjmp, @function -+kernel_setjmp: - #ifdef _REGPARM - movl %eax,%edx - #else -@@ -35,13 +35,13 @@ setjmp: - movl %ecx,20(%edx) # Return address - ret - -- .size setjmp,.-setjmp -+ .size kernel_setjmp,.-kernel_setjmp - - .text - .align 4 -- .globl longjmp -- .type longjmp, @function --longjmp: -+ .globl kernel_longjmp -+ .type kernel_longjmp, @function -+kernel_longjmp: - #ifdef _REGPARM - xchgl %eax,%edx - #else -@@ -55,4 +55,4 @@ longjmp: - movl 16(%edx),%edi - jmp *20(%edx) - -- .size longjmp,.-longjmp -+ .size kernel_longjmp,.-kernel_longjmp ---- a/arch/x86/um/setjmp_64.S -+++ b/arch/x86/um/setjmp_64.S -@@ -18,9 +18,9 @@ - - .text - .align 4 -- .globl setjmp -- .type setjmp, @function --setjmp: -+ .globl kernel_setjmp -+ .type kernel_setjmp, @function -+kernel_setjmp: - pop %rsi # Return address, and adjust the stack - xorl %eax,%eax # Return value - movq %rbx,(%rdi) -@@ -34,13 +34,13 @@ setjmp: - movq %rsi,56(%rdi) # Return address - ret - -- .size setjmp,.-setjmp -+ .size kernel_setjmp,.-kernel_setjmp - - .text - .align 4 -- .globl longjmp -- .type longjmp, @function --longjmp: -+ .globl kernel_longjmp -+ .type kernel_longjmp, @function -+kernel_longjmp: - movl %esi,%eax # Return value (int) - movq (%rdi),%rbx - movq 8(%rdi),%rsp -@@ -51,4 +51,4 @@ longjmp: - movq 48(%rdi),%r15 - jmp *56(%rdi) - -- .size longjmp,.-longjmp -+ .size kernel_longjmp,.-kernel_longjmp diff --git a/target/linux/uml/patches-4.9/001-um-Allow-building-and-running-on-older-hosts.patch b/target/linux/uml/patches-4.9/001-um-Allow-building-and-running-on-older-hosts.patch deleted file mode 100644 index 501cca82f7..0000000000 --- a/target/linux/uml/patches-4.9/001-um-Allow-building-and-running-on-older-hosts.patch +++ /dev/null @@ -1,99 +0,0 @@ -From 0a987645672ebde7844a9c0732a5a25f3d4bb6c6 Mon Sep 17 00:00:00 2001 -From: Florian Fainelli <f.fainelli@gmail.com> -Date: Thu, 25 May 2017 11:36:26 -0700 -Subject: [PATCH] um: Allow building and running on older hosts - -[ Upstream commit 0a987645672ebde7844a9c0732a5a25f3d4bb6c6 ] - -Commit a78ff1112263 ("um: add extended processor state save/restore -support") and b6024b21fec8 ("um: extend fpstate to _xstate to support -YMM registers") forced the use of the x86 FP _xstate and -PTRACE_GETREGSET/SETREGSET. On older hosts, we would neither be able to -build UML nor run it anymore with these two commits applied because we -don't have definitions for struct _xstate nor these two ptrace requests. - -We can determine at build time which fp context structure to check -against, just like we can keep using the old i387 fp save/restore if -PTRACE_GETRESET/SETREGSET are not defined. - -Fixes: a78ff1112263 ("um: add extended processor state save/restore support") -Fixes: b6024b21fec8 ("um: extend fpstate to _xstate to support YMM registers") -Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - arch/x86/um/os-Linux/registers.c | 12 ++++++++---- - arch/x86/um/user-offsets.c | 4 ++++ - 2 files changed, 12 insertions(+), 4 deletions(-) - ---- a/arch/x86/um/os-Linux/registers.c -+++ b/arch/x86/um/os-Linux/registers.c -@@ -26,6 +26,7 @@ int save_i387_registers(int pid, unsigne - - int save_fp_registers(int pid, unsigned long *fp_regs) - { -+#ifdef PTRACE_GETREGSET - struct iovec iov; - - if (have_xstate_support) { -@@ -34,9 +35,9 @@ int save_fp_registers(int pid, unsigned - if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) < 0) - return -errno; - return 0; -- } else { -+ } else -+#endif - return save_i387_registers(pid, fp_regs); -- } - } - - int restore_i387_registers(int pid, unsigned long *fp_regs) -@@ -48,6 +49,7 @@ int restore_i387_registers(int pid, unsi - - int restore_fp_registers(int pid, unsigned long *fp_regs) - { -+#ifdef PTRACE_SETREGSET - struct iovec iov; - - if (have_xstate_support) { -@@ -56,9 +58,9 @@ int restore_fp_registers(int pid, unsign - if (ptrace(PTRACE_SETREGSET, pid, NT_X86_XSTATE, &iov) < 0) - return -errno; - return 0; -- } else { -+ } else -+#endif - return restore_i387_registers(pid, fp_regs); -- } - } - - #ifdef __i386__ -@@ -122,6 +124,7 @@ int put_fp_registers(int pid, unsigned l - - void arch_init_registers(int pid) - { -+#ifdef PTRACE_GETREGSET - struct _xstate fp_regs; - struct iovec iov; - -@@ -129,6 +132,7 @@ void arch_init_registers(int pid) - iov.iov_len = sizeof(struct _xstate); - if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) == 0) - have_xstate_support = 1; -+#endif - } - #endif - ---- a/arch/x86/um/user-offsets.c -+++ b/arch/x86/um/user-offsets.c -@@ -50,7 +50,11 @@ void foo(void) - DEFINE(HOST_GS, GS); - DEFINE(HOST_ORIG_AX, ORIG_EAX); - #else -+#if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET) - DEFINE(HOST_FP_SIZE, sizeof(struct _xstate) / sizeof(unsigned long)); -+#else -+ DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long)); -+#endif - DEFINE_LONGS(HOST_BX, RBX); - DEFINE_LONGS(HOST_CX, RCX); - DEFINE_LONGS(HOST_DI, RDI); diff --git a/target/linux/uml/patches-4.9/002-um-Correctly-check-for-PTRACE_GETRESET-SETREGSET.patch b/target/linux/uml/patches-4.9/002-um-Correctly-check-for-PTRACE_GETRESET-SETREGSET.patch deleted file mode 100644 index 79beb823c2..0000000000 --- a/target/linux/uml/patches-4.9/002-um-Correctly-check-for-PTRACE_GETRESET-SETREGSET.patch +++ /dev/null @@ -1,29 +0,0 @@ -From 61e8d462457f202bf0c6393133425ad387825e22 Mon Sep 17 00:00:00 2001 -From: Richard Weinberger <richard@nod.at> -Date: Thu, 6 Jul 2017 09:35:27 +0200 -Subject: [PATCH] um: Correctly check for PTRACE_GETRESET/SETREGSET - -[ Upstream commit 61e8d462457f202bf0c6393133425ad387825e22 ] - -When checking for PTRACE_GETRESET/SETREGSET, make sure that -the correct header file is included. We need linux/ptrace.h -which contains all ptrace UAPI related defines. -Otherwise #if defined(PTRACE_GETRESET) is always false. - -Cc: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - arch/x86/um/user-offsets.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - ---- a/arch/x86/um/user-offsets.c -+++ b/arch/x86/um/user-offsets.c -@@ -5,7 +5,7 @@ - #include <sys/mman.h> - #include <sys/user.h> - #define __FRAME_OFFSETS --#include <asm/ptrace.h> -+#include <linux/ptrace.h> - #include <asm/types.h> - - #ifdef __i386__ diff --git a/target/linux/uml/patches-4.9/003-um-Fix-check-for-_xstate-for-older-hosts.patch b/target/linux/uml/patches-4.9/003-um-Fix-check-for-_xstate-for-older-hosts.patch deleted file mode 100644 index b31ca4191b..0000000000 --- a/target/linux/uml/patches-4.9/003-um-Fix-check-for-_xstate-for-older-hosts.patch +++ /dev/null @@ -1,46 +0,0 @@ -From 2fb44600fe784449404c6639de26af8361999ec7 Mon Sep 17 00:00:00 2001 -From: Florian Fainelli <f.fainelli@gmail.com> -Date: Tue, 18 Jul 2017 16:43:47 -0700 -Subject: [PATCH] um: Fix check for _xstate for older hosts - -Commit 0a987645672e ("um: Allow building and running on older -hosts") attempted to check for PTRACE_{GET,SET}REGSET under the premise -that these ptrace(2) parameters were directly linked with the presence -of the _xstate structure. - -After Richard's commit 61e8d462457f ("um: Correctly check for -PTRACE_GETRESET/SETREGSET") which properly included linux/ptrace.h -instead of asm/ptrace.h, we could get into the original build failure -that I reported: - -arch/x86/um/user-offsets.c: In function 'foo': -arch/x86/um/user-offsets.c:54: error: invalid application of 'sizeof' to -incomplete type 'struct _xstate' - -On this particular host, we do have PTRACE_GETREGSET and -PTRACE_SETREGSET defined in linux/ptrace.h, but not the structure -_xstate that should be pulled from the following include chain: signal.h --> bits/sigcontext.h. - -Correctly fix this by checking for FP_XSTATE_MAGIC1 which is the correct -way to see if struct _xstate is available or not on the host. - -Fixes: 61e8d462457f ("um: Correctly check for PTRACE_GETRESET/SETREGSET") -Fixes: 0a987645672e ("um: Allow building and running on older hosts") -Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - arch/x86/um/user-offsets.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - ---- a/arch/x86/um/user-offsets.c -+++ b/arch/x86/um/user-offsets.c -@@ -50,7 +50,7 @@ void foo(void) - DEFINE(HOST_GS, GS); - DEFINE(HOST_ORIG_AX, ORIG_EAX); - #else --#if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET) -+#ifdef FP_XSTATE_MAGIC1 - DEFINE(HOST_FP_SIZE, sizeof(struct _xstate) / sizeof(unsigned long)); - #else - DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long)); diff --git a/target/linux/uml/patches-4.9/101-mconsole-exec.patch b/target/linux/uml/patches-4.9/101-mconsole-exec.patch deleted file mode 100644 index ea9da8d8c3..0000000000 --- a/target/linux/uml/patches-4.9/101-mconsole-exec.patch +++ /dev/null @@ -1,211 +0,0 @@ -# -# Minimalist mconsole exec patch -# -# 3.10 version (with bit more synchronous behavior) by fingon at iki dot fi -# Adaptation to kernel 3.3.8 made by David Fernández (david at dit.upm.es) for -# Starting point: mconsole-exec-2.6.30.patch for kernel 2.6.30 -# Author of original patch: Paolo Giarrusso, aka Blaisorblade -# (http://www.user-mode-linux.org/~blaisorblade) -# -# Known misfeatures: -# -# - If output is too long, blocks (and breaks horribly) -# (this misfeature from 3.10 patches, when minimalizing the patch; -# workaround: redirect to a shared filesystem if long output is expected) -# -# - Nothing useful is done with stdin -# ---- a/arch/um/drivers/mconsole.h -+++ b/arch/um/drivers/mconsole.h -@@ -85,6 +85,7 @@ extern void mconsole_cad(struct mc_reque - extern void mconsole_stop(struct mc_request *req); - extern void mconsole_go(struct mc_request *req); - extern void mconsole_log(struct mc_request *req); -+extern void mconsole_exec(struct mc_request *req); - extern void mconsole_proc(struct mc_request *req); - extern void mconsole_stack(struct mc_request *req); - ---- a/arch/um/drivers/mconsole_kern.c -+++ b/arch/um/drivers/mconsole_kern.c -@@ -4,6 +4,7 @@ - * Licensed under the GPL - */ - -+#include "linux/kmod.h" - #include <linux/console.h> - #include <linux/ctype.h> - #include <linux/string.h> -@@ -24,6 +25,7 @@ - #include <linux/fs.h> - #include <linux/mount.h> - #include <linux/file.h> -+#include <linux/completion.h> - #include <asm/uaccess.h> - #include <asm/switch_to.h> - -@@ -121,6 +123,59 @@ void mconsole_log(struct mc_request *req - mconsole_reply(req, "", 0, 0); - } - -+void mconsole_exec(struct mc_request *req) -+{ -+ struct subprocess_info *sub_info; -+ int res, len; -+ struct file *out; -+ char buf[MCONSOLE_MAX_DATA]; -+ -+ char *envp[] = { -+ "HOME=/", "TERM=linux", -+ "PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin", -+ NULL -+ }; -+ char *argv[] = { -+ "/bin/sh", "-c", -+ req->request.data + strlen("exec "), -+ NULL -+ }; -+ -+ sub_info = call_usermodehelper_setup("/bin/sh", argv, envp, GFP_ATOMIC, NULL, NULL, NULL); -+ if (sub_info == NULL) { -+ mconsole_reply(req, "call_usermodehelper_setup failed", 1, 0); -+ return; -+ } -+ res = call_usermodehelper_stdoutpipe(sub_info, &out); -+ if (res < 0) { -+ kfree(sub_info); -+ mconsole_reply(req, "call_usermodehelper_stdoutpipe failed", 1, 0); -+ return; -+ } -+ -+ res = call_usermodehelper_exec(sub_info, UMH_WAIT_PROC); -+ if (res < 0) { -+ kfree(sub_info); -+ mconsole_reply(req, "call_usermodehelper_exec failed", 1, 0); -+ return; -+ } -+ -+ for (;;) { -+ len = out->f_op->read(out, buf, sizeof(buf), &out->f_pos); -+ if (len < 0) { -+ mconsole_reply(req, "reading output failed", 1, 0); -+ break; -+ } -+ if (len == 0) -+ break; -+ mconsole_reply_len(req, buf, len, 0, 1); -+ } -+ fput(out); -+ -+ mconsole_reply_len(req, NULL, 0, 0, 0); -+} -+ -+ - void mconsole_proc(struct mc_request *req) - { - struct vfsmount *mnt = task_active_pid_ns(current)->proc_mnt; -@@ -187,6 +242,7 @@ void mconsole_proc(struct mc_request *re - stop - pause the UML; it will do nothing until it receives a 'go' \n\ - go - continue the UML after a 'stop' \n\ - log <string> - make UML enter <string> into the kernel log\n\ -+ exec <string> - pass <string> to /bin/sh -c synchronously\n\ - proc <file> - returns the contents of the UML's /proc/<file>\n\ - stack <pid> - returns the stack of the specified pid\n\ - " ---- a/arch/um/drivers/mconsole_user.c -+++ b/arch/um/drivers/mconsole_user.c -@@ -30,6 +30,7 @@ static struct mconsole_command commands[ - { "stop", mconsole_stop, MCONSOLE_PROC }, - { "go", mconsole_go, MCONSOLE_INTR }, - { "log", mconsole_log, MCONSOLE_INTR }, -+ { "exec", mconsole_exec, MCONSOLE_PROC }, - { "proc", mconsole_proc, MCONSOLE_PROC }, - { "stack", mconsole_stack, MCONSOLE_INTR }, - }; ---- a/arch/um/os-Linux/file.c -+++ b/arch/um/os-Linux/file.c -@@ -555,6 +555,8 @@ int os_create_unix_socket(const char *fi - - addr.sun_family = AF_UNIX; - -+ if (len > sizeof(addr.sun_path)) -+ len = sizeof(addr.sun_path); - snprintf(addr.sun_path, len, "%s", file); - - err = bind(sock, (struct sockaddr *) &addr, sizeof(addr)); ---- a/include/linux/kmod.h -+++ b/include/linux/kmod.h -@@ -62,6 +62,7 @@ struct subprocess_info { - int wait; - int retval; - int (*init)(struct subprocess_info *info, struct cred *new); -+ struct file *stdout; - void (*cleanup)(struct subprocess_info *info); - void *data; - }; -@@ -102,4 +103,6 @@ extern int usermodehelper_read_trylock(v - extern long usermodehelper_read_lock_wait(long timeout); - extern void usermodehelper_read_unlock(void); - -+int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info, struct file **filp); -+ - #endif /* __LINUX_KMOD_H__ */ ---- a/kernel/kmod.c -+++ b/kernel/kmod.c -@@ -39,6 +39,7 @@ - #include <linux/rwsem.h> - #include <linux/ptrace.h> - #include <linux/async.h> -+#include <linux/pipe_fs_i.h> - #include <asm/uaccess.h> - - #include <trace/events/module.h> -@@ -222,6 +223,28 @@ static int call_usermodehelper_exec_asyn - flush_signal_handlers(current, 1); - spin_unlock_irq(¤t->sighand->siglock); - -+ /* Install output when needed */ -+ if (sub_info->stdout) { -+ struct files_struct *f = current->files; -+ struct fdtable *fdt; -+ -+ sys_close(1); -+ sys_close(2); -+ get_file(sub_info->stdout); -+ fd_install(1, sub_info->stdout); -+ fd_install(2, sub_info->stdout); -+ spin_lock(&f->file_lock); -+ fdt = files_fdtable(f); -+ __set_bit(1, fdt->open_fds); -+ __clear_bit(1, fdt->close_on_exec); -+ __set_bit(2, fdt->open_fds); -+ __clear_bit(2, fdt->close_on_exec); -+ spin_unlock(&f->file_lock); -+ -+ /* disallow core files */ -+ current->signal->rlim[RLIMIT_CORE] = (struct rlimit){0, 0}; -+ } -+ - /* - * Our parent (unbound workqueue) runs with elevated scheduling - * priority. Avoid propagating that into the userspace child. -@@ -540,6 +563,20 @@ struct subprocess_info *call_usermodehel - } - EXPORT_SYMBOL(call_usermodehelper_setup); - -+int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info, -+ struct file **filp) -+{ -+ struct file *f[2]; -+ -+ if (create_pipe_files(f, 0)<0) -+ return PTR_ERR(f); -+ sub_info->stdout = f[1]; -+ *filp = f[0]; -+ return 0; -+} -+EXPORT_SYMBOL(call_usermodehelper_stdoutpipe); -+ -+ - /** - * call_usermodehelper_exec - start a usermode application - * @sub_info: information about the subprocessa diff --git a/target/linux/uml/patches-4.9/102-pseudo-random-mac.patch b/target/linux/uml/patches-4.9/102-pseudo-random-mac.patch deleted file mode 100644 index a31d75ff38..0000000000 --- a/target/linux/uml/patches-4.9/102-pseudo-random-mac.patch +++ /dev/null @@ -1,131 +0,0 @@ -=============================================================================== - -This patch makes MAC addresses of network interfaces predictable. In -particular, it adds a small routine that computes MAC addresses of based on -a SHA1 hash of the virtual machine name and interface ID. - -TECHNICAL INFORMATION: - -Applies to vanilla kernel 3.9.4. - -=============================================================================== ---- a/arch/um/Kconfig.net -+++ b/arch/um/Kconfig.net -@@ -21,6 +21,19 @@ config UML_NET - enable at least one of the following transport options to actually - make use of UML networking. - -+config UML_NET_RANDOM_MAC -+ bool "Use random MAC addresses for network interfaces" -+ default n -+ depends on UML_NET -+ help -+ Virtual network devices inside a User-Mode Linux instance must be -+ assigned a MAC (Ethernet) address. If none is specified on the UML -+ command line, one must be automatically computed. If this option is -+ enabled, a randomly generated address is used. Otherwise, if this -+ option is disabled, the address is generated from a SHA1 hash of -+ the umid of the UML instance and the interface name. The latter choice -+ is useful to make MAC addresses predictable. -+ - config UML_NET_ETHERTAP - bool "Ethertap transport" - depends on UML_NET ---- a/arch/um/drivers/net_kern.c -+++ b/arch/um/drivers/net_kern.c -@@ -25,6 +25,14 @@ - #include <net_kern.h> - #include <net_user.h> - -+#include <crypto/sha.h> -+#include <crypto/hash.h> -+#include <linux/string.h> -+#include <linux/crypto.h> -+#include <linux/err.h> -+#include <linux/scatterlist.h> -+#include "os.h" -+ - #define DRIVER_NAME "uml-netdev" - - static DEFINE_SPINLOCK(opened_lock); -@@ -295,11 +303,53 @@ static void uml_net_user_timer_expire(un - #endif - } - -+#ifndef CONFIG_UML_NET_RANDOM_MAC -+ -+/* Compute a SHA1 hash of the UML instance's id and -+ * * an interface name. */ -+static int compute_hash(const char *umid, const char *ifname, char *hash) -+{ -+ struct ahash_request *desc; -+ struct crypto_ahash *tfm; -+ struct scatterlist sg; -+ char vmif[1024]; -+ int ret; -+ -+ strcpy (vmif, umid); -+ strcat (vmif, ifname); -+ -+ tfm = crypto_alloc_ahash("sha1", 0, CRYPTO_ALG_ASYNC); -+ if (IS_ERR(tfm)) -+ return -ENOMEM; -+ -+ desc = ahash_request_alloc(tfm, GFP_KERNEL); -+ if (!desc) { -+ ret = -ENOMEM; -+ goto out; -+ } -+ -+ crypto_ahash_clear_flags(tfm, ~0); -+ -+ sg_init_table(&sg, 1); -+ sg_set_buf(&sg, vmif, strlen(vmif)); -+ -+ ahash_request_set_crypt(desc, &sg, hash, strlen(vmif)); -+ -+ ret = crypto_ahash_digest(desc); -+out: -+ crypto_free_ahash(tfm); -+ -+ return ret; -+} -+ -+#endif -+ - static void setup_etheraddr(struct net_device *dev, char *str) - { - unsigned char *addr = dev->dev_addr; - char *end; - int i; -+ u8 hash[SHA1_DIGEST_SIZE]; - - if (str == NULL) - goto random; -@@ -340,9 +390,26 @@ static void setup_etheraddr(struct net_d - return; - - random: -+#ifdef CONFIG_UML_NET_RANDOM_MAC - printk(KERN_INFO - "Choosing a random ethernet address for device %s\n", dev->name); - eth_hw_addr_random(dev); -+#else -+ printk(KERN_INFO -+ "Computing a digest to use as ethernet address for device %s\n", dev->name); -+ if (compute_hash(get_umid(), dev->name, hash) < 0) { -+ printk(KERN_WARNING -+ "Could not compute digest to use as ethernet address for device %s. " -+ "Using random address instead.\n", dev->name); -+ random_ether_addr(addr); -+ } -+ else { -+ for (i=0; i < 6; i++) -+ addr[i] = (hash[i] + hash[i+6]) % 0x100; -+ } -+ addr [0] &= 0xfe; /* clear multicast bit */ -+ addr [0] |= 0x02; /* set local assignment bit (IEEE802) */ -+#endif - } - - static DEFINE_SPINLOCK(devices_lock); |