Commit 21dc2e6c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 

Pull UML updates from Richard Weinberger:

 - remove hppfs ("HonePot ProcFS")

 - initial support for musl libc

 - uaccess cleanup

 - random cleanups and bug fixes all over the place

* 'for-linus-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (21 commits)
  um: Don't pollute kernel namespace with uapi
  um: Include sys/types.h for makedev(), major(), minor()
  um: Do not use stdin and stdout identifiers for struct members
  um: Do not use __ptr_t type for stack_t's .ss pointer
  um: Fix mconsole dependency
  um: Handle tracehook_report_syscall_entry() result
  um: Remove copy&paste code from init.h
  um: Stop abusing __KERNEL__
  um: Catch unprotected user memory access
  um: Fix warning in setup_signal_stack_si()
  um: Rework uaccess code
  um: Add uaccess.h to ldt.c
  um: Add uaccess.h to syscalls_64.c
  um: Add asm/elf.h to vma.c
  um: Cleanup mem_32/64.c headers
  um: Remove hppfs
  um: Move syscall() declaration into os.h
  um: kernel: ksyms: Export symbol syscall() for fixing modpost issue
  um/os-Linux: Use char[] for syscall_stub declarations
  um: Use char[] for linker script address declarations
  ...
parents b779157d da028d5e

arch/um/Kconfig.um

+1 −15
Original line number Diff line number Diff line
@@ -44,23 +44,9 @@ config HOSTFS 
          If you'd like to be able to work with files stored on the host,

          say Y or M here; otherwise say N.



config HPPFS

	tristate "HoneyPot ProcFS"

	depends on PROC_FS

	help

	  hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc

	  entries to be overridden, removed, or fabricated from the host.

	  Its purpose is to allow a UML to appear to be a physical machine

	  by removing or changing anything in /proc which gives away the

	  identity of a UML.



	  See <http://user-mode-linux.sf.net/old/hppfs.html> for more information.



	  You only need this if you are setting up a UML honeypot.  Otherwise,

	  it is safe to say 'N' here.



config MCONSOLE

	bool "Management console"

	depends on PROC_FS

	default y

	help

          The user mode linux management console is a low-level interface to

arch/um/Makefile

+4 −3
Original line number Diff line number Diff line
@@ -68,9 +68,10 @@ KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ 


KBUILD_AFLAGS += $(ARCH_INCLUDE)



USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\

	$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \

	$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include

USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \

		$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \

		-D_FILE_OFFSET_BITS=64 -idirafter include \

		-D__KERNEL__ -D__UM_HOST__



#This will adjust *FLAGS accordingly to the platform.

include $(ARCH_DIR)/Makefile-os-$(OS)

arch/um/drivers/harddog_user.c

+9 −9
Original line number Diff line number Diff line
@@ -9,8 +9,8 @@ 
#include <os.h>



struct dog_data {

	int stdin;

	int stdout;

	int stdin_fd;

	int stdout_fd;

	int close_me[2];

};
@@ -18,11 +18,11 @@ static void pre_exec(void *d) 
{

	struct dog_data *data = d;



	dup2(data->stdin, 0);

	dup2(data->stdout, 1);

	dup2(data->stdout, 2);

	close(data->stdin);

	close(data->stdout);

	dup2(data->stdin_fd, 0);

	dup2(data->stdout_fd, 1);

	dup2(data->stdout_fd, 2);

	close(data->stdin_fd);

	close(data->stdout_fd);

	close(data->close_me[0]);

	close(data->close_me[1]);

}
@@ -49,8 +49,8 @@ int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock) 
		goto out_close_in;

	}



	data.stdin = out_fds[0];

	data.stdout = in_fds[1];

	data.stdin_fd = out_fds[0];

	data.stdout_fd = in_fds[1];

	data.close_me[0] = out_fds[1];

	data.close_me[1] = in_fds[0];

arch/um/drivers/mconsole.h

+1 −1
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
#ifndef __MCONSOLE_H__

#define __MCONSOLE_H__



#ifndef __KERNEL__

#ifdef __UM_HOST__

#include <stdint.h>

#define u32 uint32_t

#endif

arch/um/drivers/net_user.c

+3 −3
Original line number Diff line number Diff line
@@ -166,7 +166,7 @@ int net_sendto(int fd, void *buf, int len, void *to, int sock_len) 


struct change_pre_exec_data {

	int close_me;

	int stdout;

	int stdout_fd;

};



static void change_pre_exec(void *arg)
@@ -174,7 +174,7 @@ static void change_pre_exec(void *arg) 
	struct change_pre_exec_data *data = arg;



	close(data->close_me);

	dup2(data->stdout, 1);

	dup2(data->stdout_fd, 1);

}



static int change_tramp(char **argv, char *output, int output_len)
@@ -189,7 +189,7 @@ static int change_tramp(char **argv, char *output, int output_len) 
		return err;

	}

	pe_data.close_me = fds[0];

	pe_data.stdout = fds[1];

	pe_data.stdout_fd = fds[1];

	pid = run_helper(change_pre_exec, &pe_data, argv);



	if (pid > 0)	/* Avoid hang as we won't get data in failure case. */

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