From cb85aea869dcc501d8fc58b6c52ab5e5cae0d4f0 Mon Sep 17 00:00:00 2001 From: Paul Spooren Date: Tue, 4 Jan 2022 13:06:03 +0100 Subject: [PATCH] uml: drop Kernel 5.4 After the switch to Kernel 5.10 the old files are no longer required. Signed-off-by: Paul Spooren --- target/linux/uml/config-5.4 | 142 ------------ .../uml/patches-5.4/101-mconsole-exec.patch | 205 ------------------ .../patches-5.4/102-pseudo-random-mac.patch | 130 ----------- 3 files changed, 477 deletions(-) delete mode 100644 target/linux/uml/config-5.4 delete mode 100644 target/linux/uml/patches-5.4/101-mconsole-exec.patch delete mode 100644 target/linux/uml/patches-5.4/102-pseudo-random-mac.patch diff --git a/target/linux/uml/config-5.4 b/target/linux/uml/config-5.4 deleted file mode 100644 index 1d35dda2dc..0000000000 --- a/target/linux/uml/config-5.4 +++ /dev/null @@ -1,142 +0,0 @@ -CONFIG_3_LEVEL_PGTABLES=y -CONFIG_64BIT=y -CONFIG_ARCH_DEFCONFIG="arch/um/configs/x86_64_defconfig" -CONFIG_ARCH_DMA_ADDR_T_64BIT=y -CONFIG_ARCH_HAS_KCOV=y -CONFIG_ARCH_NO_PREEMPT=y -CONFIG_BLK_DEV_COW_COMMON=y -CONFIG_BLK_DEV_LOOP=y -CONFIG_BLK_DEV_UBD=y -CONFIG_BLK_DEV_UBD_SYNC=y -CONFIG_BLK_MQ_VIRTIO=y -CONFIG_CC_HAS_KASAN_GENERIC=y -CONFIG_CON_CHAN="xterm" -CONFIG_CON_ZERO_CHAN="fd:0,fd:1" -CONFIG_CPU_SUP_AMD=y -CONFIG_CPU_SUP_CENTAUR=y -CONFIG_CPU_SUP_HYGON=y -CONFIG_CPU_SUP_INTEL=y -CONFIG_CPU_SUP_ZHAOXIN=y -CONFIG_CRC16=y -CONFIG_CRYPTO_CRC32=y -CONFIG_CRYPTO_CRC32C=y -CONFIG_CRYPTO_HASH=y -CONFIG_CRYPTO_HASH2=y -CONFIG_CRYPTO_RNG2=y -CONFIG_CRYPTO_SHA1=y -# CONFIG_CRYPTO_TWOFISH_X86_64 is not set -CONFIG_DEBUG_MEMORY_INIT=y -CONFIG_DECOMPRESS_BZIP2=y -CONFIG_DECOMPRESS_GZIP=y -CONFIG_DNOTIFY=y -# CONFIG_EARLY_PRINTK is not set -CONFIG_EXT4_FS=y -CONFIG_F2FS_FS=y -CONFIG_FAILOVER=y -CONFIG_FS_IOMAP=y -CONFIG_FS_MBCACHE=y -CONFIG_FW_LOADER_PAGED_BUF=y -CONFIG_GENERIC_CLOCKEVENTS=y -# CONFIG_GENERIC_CPU is not set -CONFIG_GENERIC_CPU_DEVICES=y -CONFIG_GENERIC_FIND_FIRST_BIT=y -CONFIG_GENERIC_IRQ_SHOW=y -CONFIG_HAVE_ARCH_AUDITSYSCALL=y -CONFIG_HAVE_ARCH_SECCOMP_FILTER=y -CONFIG_HAVE_ASM_MODVERSIONS=y -CONFIG_HAVE_COPY_THREAD_TLS=y -CONFIG_HAVE_DEBUG_BUGVERBOSE=y -CONFIG_HAVE_DEBUG_KMEMLEAK=y -CONFIG_HAVE_FUTEX_CMPXCHG=y -CONFIG_HAVE_NET_DSA=y -CONFIG_HAVE_UID16=y -CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y -CONFIG_HOSTFS=y -CONFIG_HVC_DRIVER=y -CONFIG_HZ_PERIODIC=y -CONFIG_INITRAMFS_SOURCE="" -CONFIG_INIT_ENV_ARG_LIMIT=128 -CONFIG_IRQ_WORK=y -CONFIG_ISO9660_FS=y -CONFIG_JBD2=y -# CONFIG_JFFS2_FS is not set -CONFIG_KALLSYMS=y -CONFIG_KERNEL_STACK_ORDER=2 -CONFIG_LD_SCRIPT_STATIC=y -CONFIG_LOCK_DEBUGGING_SUPPORT=y -# CONFIG_MATOM is not set -CONFIG_MCONSOLE=y -# CONFIG_MCORE2 is not set -CONFIG_MEMFD_CREATE=y -CONFIG_MIGRATION=y -CONFIG_MK8=y -# CONFIG_MMAPPER is not set -CONFIG_MODULES_USE_ELF_RELA=y -# CONFIG_MPSC is not set -CONFIG_NAMESPACES=y -CONFIG_NEED_PER_CPU_KM=y -CONFIG_NET_FAILOVER=y -# CONFIG_NET_NS is not set -CONFIG_NLS=y -CONFIG_NO_DMA=y -CONFIG_NO_IOMEM=y -CONFIG_NR_CPUS=1 -CONFIG_NULL_CHAN=y -# CONFIG_OF is not set -CONFIG_PGTABLE_LEVELS=3 -CONFIG_PHYS_ADDR_T_64BIT=y -CONFIG_PORT_CHAN=y -CONFIG_POSIX_MQUEUE=y -CONFIG_POSIX_MQUEUE_SYSCTL=y -# CONFIG_PROCESSOR_SELECT is not set -CONFIG_PROC_PAGE_MONITOR=y -CONFIG_PTY_CHAN=y -CONFIG_RD_BZIP2=y -CONFIG_RD_GZIP=y -CONFIG_RELAY=y -CONFIG_SOFT_WATCHDOG=m -CONFIG_SRCU=y -CONFIG_SSL=y -CONFIG_SSL_CHAN="pty" -CONFIG_STACKTRACE=y -CONFIG_STATIC_LINK=y -CONFIG_STDERR_CONSOLE=y -CONFIG_TICK_CPU_ACCOUNTING=y -CONFIG_TINY_SRCU=y -CONFIG_TTY_CHAN=y -CONFIG_UML=y -CONFIG_UML_NET=y -CONFIG_UML_NET_DAEMON=y -CONFIG_UML_NET_DETERMINISTIC_MAC=y -CONFIG_UML_NET_ETHERTAP=y -CONFIG_UML_NET_MCAST=y -# CONFIG_UML_NET_PCAP is not set -CONFIG_UML_NET_SLIP=y -CONFIG_UML_NET_SLIRP=y -CONFIG_UML_NET_TUNTAP=y -# CONFIG_UML_NET_VDE is not set -CONFIG_UML_NET_VECTOR=y -CONFIG_UML_RANDOM=y -# CONFIG_UML_SOUND is not set -CONFIG_UML_TIME_TRAVEL_SUPPORT=y -CONFIG_UML_WATCHDOG=y -CONFIG_UML_X86=y -# CONFIG_USER_NS is not set -CONFIG_VIRTIO=y -CONFIG_VIRTIO_BLK=y -CONFIG_VIRTIO_CONSOLE=y -CONFIG_VIRTIO_NET=y -CONFIG_VIRTIO_UML=y -CONFIG_VM_EVENT_COUNTERS=y -CONFIG_WATCHDOG_CORE=y -CONFIG_X86_64=y -CONFIG_X86_CMOV=y -CONFIG_X86_CMPXCHG64=y -CONFIG_X86_INTEL_USERCOPY=y -CONFIG_X86_INTERNODE_CACHE_SHIFT=6 -CONFIG_X86_L1_CACHE_SHIFT=6 -CONFIG_X86_MINIMUM_CPU_FAMILY=64 -CONFIG_X86_TSC=y -CONFIG_X86_USE_PPRO_CHECKSUM=y -CONFIG_XTERM_CHAN=y -CONFIG_ZLIB_INFLATE=y diff --git a/target/linux/uml/patches-5.4/101-mconsole-exec.patch b/target/linux/uml/patches-5.4/101-mconsole-exec.patch deleted file mode 100644 index ca4f27b53f..0000000000 --- a/target/linux/uml/patches-5.4/101-mconsole-exec.patch +++ /dev/null @@ -1,205 +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 @@ - * Copyright (C) 2001 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com) - */ - -+#include - #include - #include - #include -@@ -26,6 +27,7 @@ - #include - #include - #include -+#include - #include - - #include -@@ -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; -@@ -183,6 +238,7 @@ 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 - make UML enter into the kernel log\n\ -+ exec - pass to /bin/sh -c synchronously\n\ - proc - returns the contents of the UML's /proc/\n\ - stack - 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 -@@ -557,6 +557,8 @@ 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 -@@ -32,4 +32,6 @@ static inline int request_module_nowait( - #define try_then_request_module(x, mod...) (x) - #endif - -+int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info, struct file **filp); -+ - #endif /* __LINUX_KMOD_H__ */ ---- a/include/linux/umh.h -+++ b/include/linux/umh.h -@@ -23,6 +23,7 @@ struct subprocess_info { - char **argv; - char **envp; - struct file *file; -+ struct file *stdout; - int wait; - int retval; - pid_t pid; ---- a/kernel/umh.c -+++ b/kernel/umh.c -@@ -76,6 +76,28 @@ 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}; -+ } -+ - /* - * Initial kernel threads share ther FS with init, in order to - * get the init root directory. But we've now created a new -@@ -362,6 +384,20 @@ static void helper_unlock(void) - wake_up(&running_helpers_waitq); - } - -+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_setup - prepare to call a usermode helper - * @path: path to usermode executable diff --git a/target/linux/uml/patches-5.4/102-pseudo-random-mac.patch b/target/linux/uml/patches-5.4/102-pseudo-random-mac.patch deleted file mode 100644 index 19696365a1..0000000000 --- a/target/linux/uml/patches-5.4/102-pseudo-random-mac.patch +++ /dev/null @@ -1,130 +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/drivers/Kconfig -+++ b/arch/um/drivers/Kconfig -@@ -146,6 +146,20 @@ config UML_NET - enable at least one of the following transport options to actually - make use of UML networking. - -+config UML_NET_DETERMINISTIC_MAC -+ bool "Use deterministic MAC addresses for network interfaces" -+ default y -+ depends on UML_NET -+ select CRYPTO_SHA1 -+ 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 - #include - -+#include -+#include -+#include -+#include -+#include -+#include -+#include "os.h" -+ - #define DRIVER_NAME "uml-netdev" - - static DEFINE_SPINLOCK(opened_lock); -@@ -286,9 +294,51 @@ static void uml_net_user_timer_expire(st - #endif - } - -+#ifdef CONFIG_UML_NET_DETERMINISTIC_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 -+ - void uml_net_setup_etheraddr(struct net_device *dev, char *str) - { - unsigned char *addr = dev->dev_addr; -+ u8 hash[SHA1_DIGEST_SIZE]; - char *end; - int i; - -@@ -331,9 +381,26 @@ void uml_net_setup_etheraddr(struct net_ - return; - - random: -+#ifndef CONFIG_UML_NET_DETERMINISTIC_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); -- 2.30.2