uml: Remove 4.4 patches

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

3 files changed, 0 insertions, 465 deletions

diff --git a/target/linux/uml/patches-4.4/000-um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthre.patch b/target/linux/uml/patches-4.4/000-um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthre.patch
deleted file mode 100644
index 02149eea7a..0000000000
--- a/target/linux/uml/patches-4.4/000-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-4.4/101-mconsole-exec.patch b/target/linux/uml/patches-4.4/101-mconsole-exec.patch
deleted file mode 100644
index 879b106bfa..0000000000
--- a/target/linux/uml/patches-4.4/101-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
-@@ -535,6 +535,8 @@ 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(&current->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-4.4/102-pseudo-random-mac.patch b/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
deleted file mode 100644
index fc54f603c0..0000000000
--- a/target/linux/uml/patches-4.4/102-pseudo-random-mac.patch
+++ /dev/null
@@ -1,124 +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 +25,13 @@
- #include <net_kern.h>
- #include <net_user.h>
- 
-+#include <crypto/sha.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 +302,47 @@ 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) {
-+	char vmif[1024];
-+	struct scatterlist sg;
-+	struct crypto_hash *tfm;
-+	struct hash_desc desc;
-+
-+	strcpy (vmif, umid);
-+	strcat (vmif, ifname);
-+
-+	tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
-+	if (IS_ERR(tfm))
-+		return 1;
-+
-+	desc.tfm = tfm;
-+	desc.flags = 0;
-+
-+	sg_init_table(&sg, 1);
-+	sg_set_buf(&sg, vmif, strlen(vmif));
-+
-+	if (crypto_hash_digest(&desc, &sg, strlen(vmif), hash)) {
-+		crypto_free_hash(tfm);
-+		return 1;
-+	}
-+
-+	crypto_free_hash(tfm);
-+
-+	return 0;
-+}
-+
-+#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 +383,26 @@ 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)) {
-+		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);