diff options
Diffstat (limited to 'arch/um/kernel')
| -rw-r--r-- | arch/um/kernel/Makefile | 16 | ||||
| -rw-r--r-- | arch/um/kernel/helper.c | 12 | ||||
| -rw-r--r-- | arch/um/kernel/init_task.c | 5 | ||||
| -rw-r--r-- | arch/um/kernel/mem.c | 16 | ||||
| -rw-r--r-- | arch/um/kernel/mem_user.c | 273 | ||||
| -rw-r--r-- | arch/um/kernel/process_kern.c | 19 | ||||
| -rw-r--r-- | arch/um/kernel/skas/include/mode_kern-skas.h | 2 | ||||
| -rw-r--r-- | arch/um/kernel/skas/include/uaccess-skas.h | 6 | ||||
| -rw-r--r-- | arch/um/kernel/skas/process_kern.c | 7 | ||||
| -rw-r--r-- | arch/um/kernel/tempfile.c | 82 | ||||
| -rw-r--r-- | arch/um/kernel/tlb.c | 2 | ||||
| -rw-r--r-- | arch/um/kernel/tt/include/mode_kern-tt.h | 2 | ||||
| -rw-r--r-- | arch/um/kernel/tt/include/uaccess-tt.h | 6 | ||||
| -rw-r--r-- | arch/um/kernel/tt/mem_user.c | 1 | ||||
| -rw-r--r-- | arch/um/kernel/tt/process_kern.c | 8 | ||||
| -rw-r--r-- | arch/um/kernel/um_arch.c | 5 | ||||
| -rw-r--r-- | arch/um/kernel/user_util.c | 18 |
17 files changed, 67 insertions, 413 deletions
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile index 614b8ebeb0e..1a0001b3850 100644 --- a/arch/um/kernel/Makefile +++ b/arch/um/kernel/Makefile @@ -1,4 +1,4 @@ -# +# # Copyright (C) 2002 Jeff Dike (jdike@karaya.com) # Licensed under the GPL # @@ -7,11 +7,11 @@ extra-y := vmlinux.lds clean-files := obj-y = config.o exec_kern.o exitcode.o \ - helper.o init_task.o irq.o irq_user.o ksyms.o main.o mem.o mem_user.o \ - physmem.o process_kern.o ptrace.o reboot.o resource.o sigio_user.o \ - sigio_kern.o signal_kern.o signal_user.o smp.o syscall_kern.o sysrq.o \ - tempfile.o time.o time_kern.o tlb.o trap_kern.o trap_user.o \ - uaccess_user.o um_arch.o umid.o user_util.o + helper.o init_task.o irq.o irq_user.o ksyms.o main.o mem.o physmem.o \ + process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \ + signal_kern.o signal_user.o smp.o syscall_kern.o sysrq.o time.o \ + time_kern.o tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o \ + umid.o user_util.o obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o obj-$(CONFIG_GPROF) += gprof_syms.o @@ -24,8 +24,8 @@ obj-$(CONFIG_MODE_SKAS) += skas/ user-objs-$(CONFIG_TTY_LOG) += tty_log.o -USER_OBJS := $(user-objs-y) config.o helper.o main.o tempfile.o time.o \ - tty_log.o umid.o user_util.o +USER_OBJS := $(user-objs-y) config.o helper.o main.o time.o tty_log.o umid.o \ + user_util.o include arch/um/scripts/Makefile.rules diff --git a/arch/um/kernel/helper.c b/arch/um/kernel/helper.c index f83e1e8e239..33fb0bd3b11 100644 --- a/arch/um/kernel/helper.c +++ b/arch/um/kernel/helper.c @@ -85,8 +85,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, data.fd = fds[1]; pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data); if(pid < 0){ - printk("run_helper : clone failed, errno = %d\n", errno); ret = -errno; + printk("run_helper : clone failed, errno = %d\n", errno); goto out_close; } @@ -122,7 +122,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, unsigned long *stack_out, int stack_order) { unsigned long stack, sp; - int pid, status; + int pid, status, err; stack = alloc_stack(stack_order, um_in_interrupt()); if(stack == 0) return(-ENOMEM); @@ -130,16 +130,18 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, sp = stack + (page_size() << stack_order) - sizeof(void *); pid = clone(proc, (void *) sp, flags | SIGCHLD, arg); if(pid < 0){ + err = -errno; printk("run_helper_thread : clone failed, errno = %d\n", errno); - return(-errno); + return err; } if(stack_out == NULL){ CATCH_EINTR(pid = waitpid(pid, &status, 0)); if(pid < 0){ + err = -errno; printk("run_helper_thread - wait failed, errno = %d\n", errno); - pid = -errno; + pid = err; } if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) printk("run_helper_thread - thread returned status " @@ -156,8 +158,8 @@ int helper_wait(int pid) CATCH_EINTR(ret = waitpid(pid, NULL, WNOHANG)); if(ret < 0){ + ret = -errno; printk("helper_wait : waitpid failed, errno = %d\n", errno); - return(-errno); } return(ret); } diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c index cd7c85be0a1..49ed5ddf070 100644 --- a/arch/um/kernel/init_task.c +++ b/arch/um/kernel/init_task.c @@ -13,6 +13,7 @@ #include "asm/pgtable.h" #include "user_util.h" #include "mem_user.h" +#include "os.h" static struct fs_struct init_fs = INIT_FS; struct mm_struct init_mm = INIT_MM(init_mm); @@ -45,8 +46,8 @@ __attribute__((__section__(".data.init_task"))) = void unprotect_stack(unsigned long stack) { - protect_memory(stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE, - 1, 1, 0, 1); + os_protect_memory((void *) stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE, + 1, 1, 0); } /* diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 64fa062cc11..ea008b031a8 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -1,4 +1,4 @@ -/* +/* * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ @@ -19,6 +19,10 @@ #include "mem_user.h" #include "uml_uaccess.h" #include "os.h" +#include "linux/types.h" +#include "linux/string.h" +#include "init.h" +#include "kern_constants.h" extern char __binary_start; @@ -368,6 +372,16 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) return pte; } +struct iomem_region *iomem_regions = NULL; +int iomem_size = 0; + +extern int parse_iomem(char *str, int *add) __init; + +__uml_setup("iomem=", parse_iomem, +"iomem=<name>,<file>\n" +" Configure <file> as an IO memory region named <name>.\n\n" +); + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/arch/um/kernel/mem_user.c b/arch/um/kernel/mem_user.c deleted file mode 100644 index 4a663fd434b..00000000000 --- a/arch/um/kernel/mem_user.c +++ /dev/null @@ -1,273 +0,0 @@ -/* - * arch/um/kernel/mem_user.c - * - * BRIEF MODULE DESCRIPTION - * user side memory routines for supporting IO memory inside user mode linux - * - * Copyright (C) 2001 RidgeRun, Inc. - * Author: RidgeRun, Inc. - * Greg Lonnon glonnon@ridgerun.com or info@ridgerun.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <stdarg.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/mman.h> -#include "kern_util.h" -#include "user.h" -#include "user_util.h" -#include "mem_user.h" -#include "init.h" -#include "os.h" -#include "tempfile.h" -#include "kern_constants.h" - -#define TEMPNAME_TEMPLATE "vm_file-XXXXXX" - -static int create_tmp_file(unsigned long len) -{ - int fd, err; - char zero; - - fd = make_tempfile(TEMPNAME_TEMPLATE, NULL, 1); - if(fd < 0) { - os_print_error(fd, "make_tempfile"); - exit(1); - } - - err = os_mode_fd(fd, 0777); - if(err < 0){ - os_print_error(err, "os_mode_fd"); - exit(1); - } - err = os_seek_file(fd, len); - if(err < 0){ - os_print_error(err, "os_seek_file"); - exit(1); - } - zero = 0; - err = os_write_file(fd, &zero, 1); - if(err != 1){ - os_print_error(err, "os_write_file"); - exit(1); - } - - return(fd); -} - -void check_tmpexec(void) -{ - void *addr; - int err, fd = create_tmp_file(UM_KERN_PAGE_SIZE); - - addr = mmap(NULL, UM_KERN_PAGE_SIZE, - PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE, fd, 0); - printf("Checking PROT_EXEC mmap in /tmp..."); - fflush(stdout); - if(addr == MAP_FAILED){ - err = errno; - perror("failed"); - if(err == EPERM) - printf("/tmp must be not mounted noexec\n"); - exit(1); - } - printf("OK\n"); - munmap(addr, UM_KERN_PAGE_SIZE); - - os_close_file(fd); -} - -static int have_devanon = 0; - -void check_devanon(void) -{ - int fd; - - printk("Checking for /dev/anon on the host..."); - fd = open("/dev/anon", O_RDWR); - if(fd < 0){ - printk("Not available (open failed with errno %d)\n", errno); - return; - } - - printk("OK\n"); - have_devanon = 1; -} - -static int create_anon_file(unsigned long len) -{ - void *addr; - int fd; - - fd = open("/dev/anon", O_RDWR); - if(fd < 0) { - os_print_error(fd, "opening /dev/anon"); - exit(1); - } - - addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); - if(addr == MAP_FAILED){ - perror("mapping physmem file"); - exit(1); - } - munmap(addr, len); - - return(fd); -} - -int create_mem_file(unsigned long len) -{ - int err, fd; - - if(have_devanon) - fd = create_anon_file(len); - else fd = create_tmp_file(len); - - err = os_set_exec_close(fd, 1); - if(err < 0) - os_print_error(err, "exec_close"); - return(fd); -} - -struct iomem_region *iomem_regions = NULL; -int iomem_size = 0; - -static int __init parse_iomem(char *str, int *add) -{ - struct iomem_region *new; - struct uml_stat buf; - char *file, *driver; - int fd, err, size; - - driver = str; - file = strchr(str,','); - if(file == NULL){ - printf("parse_iomem : failed to parse iomem\n"); - goto out; - } - *file = '\0'; - file++; - fd = os_open_file(file, of_rdwr(OPENFLAGS()), 0); - if(fd < 0){ - os_print_error(fd, "parse_iomem - Couldn't open io file"); - goto out; - } - - err = os_stat_fd(fd, &buf); - if(err < 0){ - os_print_error(err, "parse_iomem - cannot stat_fd file"); - goto out_close; - } - - new = malloc(sizeof(*new)); - if(new == NULL){ - perror("Couldn't allocate iomem_region struct"); - goto out_close; - } - - size = (buf.ust_size + UM_KERN_PAGE_SIZE) & ~(UM_KERN_PAGE_SIZE - 1); - - *new = ((struct iomem_region) { .next = iomem_regions, - .driver = driver, - .fd = fd, - .size = size, - .phys = 0, - .virt = 0 }); - iomem_regions = new; - iomem_size += new->size + UM_KERN_PAGE_SIZE; - - return(0); - out_close: - os_close_file(fd); - out: - return(1); -} - -__uml_setup("iomem=", parse_iomem, -"iomem=<name>,<file>\n" -" Configure <file> as an IO memory region named <name>.\n\n" -); - -int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x, - int must_succeed) -{ - int err; - - err = os_protect_memory((void *) addr, len, r, w, x); - if(err < 0){ - if(must_succeed) - panic("protect failed, err = %d", -err); - else return(err); - } - return(0); -} - -#if 0 -/* Debugging facility for dumping stuff out to the host, avoiding the timing - * problems that come with printf and breakpoints. - * Enable in case of emergency. - */ - -int logging = 1; -int logging_fd = -1; - -int logging_line = 0; -char logging_buf[512]; - -void log(char *fmt, ...) -{ - va_list ap; - struct timeval tv; - struct openflags flags; - - if(logging == 0) return; - if(logging_fd < 0){ - flags = of_create(of_trunc(of_rdwr(OPENFLAGS()))); - logging_fd = os_open_file("log", flags, 0644); - } - gettimeofday(&tv, NULL); - sprintf(logging_buf, "%d\t %u.%u ", logging_line++, tv.tv_sec, - tv.tv_usec); - va_start(ap, fmt); - vsprintf(&logging_buf[strlen(logging_buf)], fmt, ap); - va_end(ap); - write(logging_fd, logging_buf, strlen(logging_buf)); -} -#endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c index c23d8a08d0f..39cf568ccfa 100644 --- a/arch/um/kernel/process_kern.c +++ b/arch/um/kernel/process_kern.c @@ -113,8 +113,23 @@ void set_current(void *t) void *_switch_to(void *prev, void *next, void *last) { - return(CHOOSE_MODE(switch_to_tt(prev, next), - switch_to_skas(prev, next))); + struct task_struct *from = prev; + struct task_struct *to= next; + + to->thread.prev_sched = from; + set_current(to); + + do { + current->thread.saved_task = NULL ; + CHOOSE_MODE_PROC(switch_to_tt, switch_to_skas, prev, next); + if(current->thread.saved_task) + show_regs(&(current->thread.regs)); + next= current->thread.saved_task; + prev= current; + } while(current->thread.saved_task); + + return(current->thread.prev_sched); + } void interrupt_end(void) diff --git a/arch/um/kernel/skas/include/mode_kern-skas.h b/arch/um/kernel/skas/include/mode_kern-skas.h index e4849002811..c97a80dfe37 100644 --- a/arch/um/kernel/skas/include/mode_kern-skas.h +++ b/arch/um/kernel/skas/include/mode_kern-skas.h @@ -11,7 +11,7 @@ #include "asm/ptrace.h" extern void flush_thread_skas(void); -extern void *switch_to_skas(void *prev, void *next); +extern void switch_to_skas(void *prev, void *next); extern void start_thread_skas(struct pt_regs *regs, unsigned long eip, unsigned long esp); extern int copy_thread_skas(int nr, unsigned long clone_flags, diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h index 6ee3f3902e6..7da0c2def0e 100644 --- a/arch/um/kernel/skas/include/uaccess-skas.h +++ b/arch/um/kernel/skas/include/uaccess-skas.h @@ -18,12 +18,6 @@ ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \ ((unsigned long) (addr) + (size) >= (unsigned long)(addr)))) -static inline int verify_area_skas(int type, const void __user * addr, - unsigned long size) -{ - return(access_ok_skas(type, addr, size) ? 0 : -EFAULT); -} - extern int copy_from_user_skas(void *to, const void __user *from, int n); extern int copy_to_user_skas(void __user *to, const void *from, int n); extern int strncpy_from_user_skas(char *dst, const char __user *src, int count); diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c index 3d1b227226e..efe92e8aa2a 100644 --- a/arch/um/kernel/skas/process_kern.c +++ b/arch/um/kernel/skas/process_kern.c @@ -24,7 +24,7 @@ #include "proc_mm.h" #include "registers.h" -void *switch_to_skas(void *prev, void *next) +void switch_to_skas(void *prev, void *next) { struct task_struct *from, *to; @@ -35,16 +35,11 @@ void *switch_to_skas(void *prev, void *next) if(current->pid == 0) switch_timers(0); - to->thread.prev_sched = from; - set_current(to); - switch_threads(&from->thread.mode.skas.switch_buf, to->thread.mode.skas.switch_buf); if(current->pid == 0) switch_timers(1); - - return(current->thread.prev_sched); } extern void schedule_tail(struct task_struct *prev); diff --git a/arch/um/kernel/tempfile.c b/arch/um/kernel/tempfile.c deleted file mode 100644 index b1674bc1395..00000000000 --- a/arch/um/kernel/tempfile.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <sys/param.h> -#include "init.h" - -/* Modified from create_mem_file and start_debugger */ -static char *tempdir = NULL; - -static void __init find_tempdir(void) -{ - char *dirs[] = { "TMP", "TEMP", "TMPDIR", NULL }; - int i; - char *dir = NULL; - - if(tempdir != NULL) return; /* We've already been called */ - for(i = 0; dirs[i]; i++){ - dir = getenv(dirs[i]); - if((dir != NULL) && (*dir != '\0')) - break; - } - if((dir == NULL) || (*dir == '\0')) - dir = "/tmp"; - - tempdir = malloc(strlen(dir) + 2); - if(tempdir == NULL){ - fprintf(stderr, "Failed to malloc tempdir, " - "errno = %d\n", errno); - return; - } - strcpy(tempdir, dir); - strcat(tempdir, "/"); -} - -int make_tempfile(const char *template, char **out_tempname, int do_unlink) -{ - char tempname[MAXPATHLEN]; - int fd; - - find_tempdir(); - if (*template != '/') - strcpy(tempname, tempdir); - else - *tempname = 0; - strcat(tempname, template); - fd = mkstemp(tempname); - if(fd < 0){ - fprintf(stderr, "open - cannot create %s: %s\n", tempname, - strerror(errno)); - return -1; - } - if(do_unlink && (unlink(tempname) < 0)){ - perror("unlink"); - return -1; - } - if(out_tempname){ - *out_tempname = strdup(tempname); - if(*out_tempname == NULL){ - perror("strdup"); - return -1; - } - } - return(fd); -} - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 80ed6188e8a..0a562c3c0fd 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -307,7 +307,7 @@ int flush_tlb_kernel_range_common(unsigned long start, unsigned long end) } else if(pte_newprot(*pte)){ updated = 1; - protect_memory(addr, PAGE_SIZE, 1, 1, 1, 1); + os_protect_memory((void *) addr, PAGE_SIZE, 1, 1, 1); } addr += PAGE_SIZE; } diff --git a/arch/um/kernel/tt/include/mode_kern-tt.h b/arch/um/kernel/tt/include/mode_kern-tt.h index e0ca0e0b251..2a35b15c5fe 100644 --- a/arch/um/kernel/tt/include/mode_kern-tt.h +++ b/arch/um/kernel/tt/include/mode_kern-tt.h @@ -11,7 +11,7 @@ #include "asm/ptrace.h" #include "asm/uaccess.h" -extern void *switch_to_tt(void *prev, void *next); +extern void switch_to_tt(void *prev, void *next); extern void flush_thread_tt(void); extern void start_thread_tt(struct pt_regs *regs, unsigned long eip, unsigned long esp); diff --git a/arch/um/kernel/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h index aa6db384af8..dc2ebfa8c54 100644 --- a/arch/um/kernel/tt/include/uaccess-tt.h +++ b/arch/um/kernel/tt/include/uaccess-tt.h @@ -33,12 +33,6 @@ extern unsigned long uml_physmem; (((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) && \ (under_task_size(addr, size) || is_stack(addr, size)))) -static inline int verify_area_tt(int type, const void __user * addr, - unsigned long size) -{ - return(access_ok_tt(type, addr, size) ? 0 : -EFAULT); -} - extern unsigned long get_fault_addr(void); extern int __do_copy_from_user(void *to, const void *from, int n, diff --git a/arch/um/kernel/tt/mem_user.c b/arch/um/kernel/tt/mem_user.c index 3085267459b..03e58989538 100644 --- a/arch/um/kernel/tt/mem_user.c +++ b/arch/um/kernel/tt/mem_user.c @@ -12,6 +12,7 @@ #include "tt.h" #include "mem_user.h" #include "user_util.h" +#include "os.h" void remap_data(void *segment_start, void *segment_end, int w) { diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c index a189a2b9293..cfaa373a6e7 100644 --- a/arch/um/kernel/tt/process_kern.c +++ b/arch/um/kernel/tt/process_kern.c @@ -23,10 +23,11 @@ #include "mem_user.h" #include "tlb.h" #include "mode.h" +#include "mode_kern.h" #include "init.h" #include "tt.h" -void *switch_to_tt(void *prev, void *next, void *last) +void switch_to_tt(void *prev, void *next) { struct task_struct *from, *to, *prev_sched; unsigned long flags; @@ -36,8 +37,6 @@ void *switch_to_tt(void *prev, void *next, void *last) from = prev; to = next; - to->thread.prev_sched = from; - cpu = from->thread_info->cpu; if(cpu == 0) forward_interrupts(to->thread.mode.tt.extern_pid); @@ -53,7 +52,6 @@ void *switch_to_tt(void *prev, void *next, void *last) forward_pending_sigio(to->thread.mode.tt.extern_pid); c = 0; - set_current(to); err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c)); if(err != sizeof(c)) @@ -85,8 +83,6 @@ void *switch_to_tt(void *prev, void *next, void *last) flush_tlb_all(); local_irq_restore(flags); - - return(current->thread.prev_sched); } void release_thread_tt(struct task_struct *task) diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 09f6f7ce469..f0a275947d3 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -361,11 +361,6 @@ int linux_main(int argc, char **argv) uml_start = CHOOSE_MODE_PROC(set_task_sizes_tt, set_task_sizes_skas, 0, &host_task_size, &task_size); - /* Need to check this early because mmapping happens before the - * kernel is running. - */ - check_tmpexec(); - brk_start = (unsigned long) sbrk(0); CHOOSE_MODE_PROC(before_mem_tt, before_mem_skas, brk_start); /* Increase physical memory size for exec-shield users diff --git a/arch/um/kernel/user_util.c b/arch/um/kernel/user_util.c index 954ff67cc8b..41d17c71511 100644 --- a/arch/um/kernel/user_util.c +++ b/arch/um/kernel/user_util.c @@ -109,18 +109,14 @@ int raw(int fd) int err; CATCH_EINTR(err = tcgetattr(fd, &tt)); - if (err < 0) { - printk("tcgetattr failed, errno = %d\n", errno); - return(-errno); - } + if(err < 0) + return -errno; cfmakeraw(&tt); CATCH_EINTR(err = tcsetattr(fd, TCSADRAIN, &tt)); - if (err < 0) { - printk("tcsetattr failed, errno = %d\n", errno); - return(-errno); - } + if(err < 0) + return -errno; /* XXX tcsetattr could have applied only some changes * (and cfmakeraw() is a set of changes) */ @@ -132,6 +128,12 @@ void setup_machinename(char *machine_out) struct utsname host; uname(&host); +#if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT) + if (!strcmp(host.machine, "x86_64")) { + strcpy(machine_out, "i686"); + return; + } +#endif strcpy(machine_out, host.machine); } |