uml: update to linux 5.4

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 213 deletions

diff --git a/target/linux/uml/patches-4.14/101-mconsole-exec.patch b/target/linux/uml/patches-4.14/101-mconsole-exec.patch
deleted file mode 100644
index 2acb519323..0000000000
--- a/target/linux/uml/patches-4.14/101-mconsole-exec.patch
+++ /dev/null
@@ -1,213 +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>
-@@ -26,6 +27,7 @@
- #include <linux/mount.h>
- #include <linux/file.h>
- #include <linux/uaccess.h>
-+#include <linux/completion.h>
- #include <asm/switch_to.h>
- 
- #include <init.h>
-@@ -122,6 +124,59 @@ 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 <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
-@@ -45,4 +45,6 @@ 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
-@@ -22,6 +22,7 @@ struct subprocess_info {
- 	const char *path;
- 	char **argv;
- 	char **envp;
-+	struct file *stdout;
- 	int wait;
- 	int retval;
- 	int (*init)(struct subprocess_info *info, struct cred *new);
---- a/kernel/umh.c
-+++ b/kernel/umh.c
-@@ -25,6 +25,7 @@
- #include <linux/ptrace.h>
- #include <linux/async.h>
- #include <linux/uaccess.h>
-+#include <linux/pipe_fs_i.h>
- 
- #include <trace/events/module.h>
- 
-@@ -70,6 +71,28 @@ 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.
-@@ -393,6 +416,20 @@ 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