diff options
Diffstat (limited to 'arch/alpha/kernel')
| -rw-r--r-- | arch/alpha/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/alpha/kernel/binfmt_loader.c | 51 | ||||
| -rw-r--r-- | arch/alpha/kernel/init_task.c | 1 |
3 files changed, 52 insertions, 2 deletions
diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile index ac706c1d7ada..b4697759a123 100644 --- a/arch/alpha/kernel/Makefile +++ b/arch/alpha/kernel/Makefile @@ -8,7 +8,7 @@ EXTRA_CFLAGS := -Werror -Wno-sign-compare obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \ irq_alpha.o signal.o setup.o ptrace.o time.o \ - alpha_ksyms.o systbls.o err_common.o io.o + alpha_ksyms.o systbls.o err_common.o io.o binfmt_loader.o obj-$(CONFIG_VGA_HOSE) += console.o obj-$(CONFIG_SMP) += smp.o diff --git a/arch/alpha/kernel/binfmt_loader.c b/arch/alpha/kernel/binfmt_loader.c new file mode 100644 index 000000000000..4a0af906b00a --- /dev/null +++ b/arch/alpha/kernel/binfmt_loader.c @@ -0,0 +1,51 @@ +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/file.h> +#include <linux/mm_types.h> +#include <linux/binfmts.h> +#include <linux/a.out.h> + +static int load_binary(struct linux_binprm *bprm, struct pt_regs *regs) +{ + struct exec *eh = (struct exec *)bprm->buf; + unsigned long loader; + struct file *file; + int retval; + + if (eh->fh.f_magic != 0x183 || (eh->fh.f_flags & 0x3000) != 0x3000) + return -ENOEXEC; + + if (bprm->loader) + return -ENOEXEC; + + allow_write_access(bprm->file); + fput(bprm->file); + bprm->file = NULL; + + loader = bprm->vma->vm_end - sizeof(void *); + + file = open_exec("/sbin/loader"); + retval = PTR_ERR(file); + if (IS_ERR(file)) + return retval; + + /* Remember if the application is TASO. */ + bprm->taso = eh->ah.entry < 0x100000000UL; + + bprm->file = file; + bprm->loader = loader; + retval = prepare_binprm(bprm); + if (retval < 0) + return retval; + return search_binary_handler(bprm,regs); +} + +static struct linux_binfmt loader_format = { + .load_binary = load_binary, +}; + +static int __init init_loader_binfmt(void) +{ + return register_binfmt(&loader_format); +} +arch_initcall(init_loader_binfmt); diff --git a/arch/alpha/kernel/init_task.c b/arch/alpha/kernel/init_task.c index 1f762189fa64..c2938e574a40 100644 --- a/arch/alpha/kernel/init_task.c +++ b/arch/alpha/kernel/init_task.c @@ -8,7 +8,6 @@ #include <asm/uaccess.h> -static struct fs_struct init_fs = INIT_FS; static struct signal_struct init_signals = INIT_SIGNALS(init_signals); static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); struct mm_struct init_mm = INIT_MM(init_mm); |
