diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/kernel/dyn.lds.S | 5 | ||||
| -rw-r--r-- | arch/um/kernel/uml.lds.S | 4 | ||||
| -rw-r--r-- | arch/um/os-Linux/start_up.c | 24 |
3 files changed, 21 insertions, 12 deletions
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 87a4e44..2454774 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -62,7 +62,7 @@ SECTIONS } =0x90909090 .plt : { *(.plt) } .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -99,7 +99,8 @@ SECTIONS *(.data.init_task) . = ALIGN(KERNEL_STACK_SIZE); *(.data.init_irqstack) - *(.data .data.* .gnu.linkonce.d.*) + DATA_DATA + *(.data.* .gnu.linkonce.d.*) SORT(CONSTRUCTORS) } .data1 : { *(.data1) } diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S index bc59f97..307b937 100644 --- a/arch/um/kernel/uml.lds.S +++ b/arch/um/kernel/uml.lds.S @@ -37,7 +37,7 @@ SECTIONS .text : { - *(.text) + TEXT_TEXT SCHED_TEXT LOCK_TEXT *(.fixup) @@ -61,7 +61,7 @@ SECTIONS *(.data.init_task) . = ALIGN(KERNEL_STACK_SIZE); *(.data.init_irqstack) - *(.data) + DATA_DATA *(.gnu.linkonce.d*) CONSTRUCTORS } diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index 79471f8..3fc13fa 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -144,9 +144,7 @@ static int stop_ptraced_child(int pid, void *stack, int exitcode, int exit_with = WEXITSTATUS(status); if (exit_with == 2) non_fatal("check_ptrace : child exited with status 2. " - "Serious trouble happening! Try updating " - "your host skas patch!\nDisabling SYSEMU " - "support."); + "\nDisabling SYSEMU support.\n"); non_fatal("check_ptrace : child exited with exitcode %d, while " "expecting %d; status 0x%x\n", exit_with, exitcode, status); @@ -209,6 +207,7 @@ __uml_setup("nosysemu", nosysemu_cmd_param, static void __init check_sysemu(void) { void *stack; + unsigned long regs[MAX_REG_NR]; int pid, n, status, count=0; non_fatal("Checking syscall emulation patch for ptrace..."); @@ -225,11 +224,20 @@ static void __init check_sysemu(void) fatal("check_sysemu : expected SIGTRAP, got status = %d", status); - n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET, - os_getpid()); - if(n < 0) - fatal_perror("check_sysemu : failed to modify system call " - "return"); + if(ptrace(PTRACE_GETREGS, pid, 0, regs) < 0) + fatal_perror("check_sysemu : PTRACE_GETREGS failed"); + if(PT_SYSCALL_NR(regs) != __NR_getpid){ + non_fatal("check_sysemu got system call number %d, " + "expected %d...", PT_SYSCALL_NR(regs), __NR_getpid); + goto fail; + } + + n = ptrace(PTRACE_POKEUSR, pid, PT_SYSCALL_RET_OFFSET, os_getpid()); + if(n < 0){ + non_fatal("check_sysemu : failed to modify system call " + "return"); + goto fail; + } if (stop_ptraced_child(pid, stack, 0, 0) < 0) goto fail_stopped; |