arch/x86/ia32/ia32_aout.c | 159 ---------------------------------------------- fs/binfmt_aout.c | 82 ------------------------ 2 files changed, 241 deletions(-) diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 7dbbe9ffda17..3c135084e1eb 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -39,82 +39,10 @@ static int load_aout_binary(struct linux_binprm *); static int load_aout_library(struct file *); -#ifdef CONFIG_COREDUMP -static int aout_core_dump(struct coredump_params *); - -static unsigned long get_dr(int n) -{ - struct perf_event *bp = current->thread.ptrace_bps[n]; - return bp ? bp->hw.info.address : 0; -} - -/* - * fill in the user structure for a core dump.. - */ -static void fill_dump(struct pt_regs *regs, struct user32 *dump) -{ - u32 fs, gs; - memset(dump, 0, sizeof(*dump)); - -/* changed the size calculations - should hopefully work better. lbt */ - dump->magic = CMAGIC; - dump->start_code = 0; - dump->start_stack = regs->sp & ~(PAGE_SIZE - 1); - dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT; - dump->u_dsize = ((unsigned long) - (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT; - dump->u_dsize -= dump->u_tsize; - dump->u_debugreg[0] = get_dr(0); - dump->u_debugreg[1] = get_dr(1); - dump->u_debugreg[2] = get_dr(2); - dump->u_debugreg[3] = get_dr(3); - dump->u_debugreg[6] = current->thread.debugreg6; - dump->u_debugreg[7] = current->thread.ptrace_dr7; - - if (dump->start_stack < 0xc0000000) { - unsigned long tmp; - - tmp = (unsigned long) (0xc0000000 - dump->start_stack); - dump->u_ssize = tmp >> PAGE_SHIFT; - } - - dump->regs.ebx = regs->bx; - dump->regs.ecx = regs->cx; - dump->regs.edx = regs->dx; - dump->regs.esi = regs->si; - dump->regs.edi = regs->di; - dump->regs.ebp = regs->bp; - dump->regs.eax = regs->ax; - dump->regs.ds = current->thread.ds; - dump->regs.es = current->thread.es; - savesegment(fs, fs); - dump->regs.fs = fs; - savesegment(gs, gs); - dump->regs.gs = gs; - dump->regs.orig_eax = regs->orig_ax; - dump->regs.eip = regs->ip; - dump->regs.cs = regs->cs; - dump->regs.eflags = regs->flags; - dump->regs.esp = regs->sp; - dump->regs.ss = regs->ss; - -#if 1 /* FIXME */ - dump->u_fpvalid = 0; -#else - dump->u_fpvalid = dump_fpu(regs, &dump->i387); -#endif -} - -#endif - static struct linux_binfmt aout_format = { .module = THIS_MODULE, .load_binary = load_aout_binary, .load_shlib = load_aout_library, -#ifdef CONFIG_COREDUMP - .core_dump = aout_core_dump, -#endif - .min_coredump = PAGE_SIZE }; static int set_brk(unsigned long start, unsigned long end) @@ -126,93 +54,6 @@ static int set_brk(unsigned long start, unsigned long end) return vm_brk(start, end - start); } -#ifdef CONFIG_COREDUMP -/* - * These are the only things you should do on a core-file: use only these - * macros to write out all the necessary info. - */ - -#include - -#define START_DATA(u) (u.u_tsize << PAGE_SHIFT) -#define START_STACK(u) (u.start_stack) - -/* - * Routine writes a core dump image in the current directory. - * Currently only a stub-function. - * - * Note that setuid/setgid files won't make a core-dump if the uid/gid - * changed due to the set[u|g]id. It's enforced by the "current->mm->dumpable" - * field, which also makes sure the core-dumps won't be recursive if the - * dumping of the process results in another error.. - */ - -static int aout_core_dump(struct coredump_params *cprm) -{ - mm_segment_t fs; - int has_dumped = 0; - unsigned long dump_start, dump_size; - struct user32 dump; - - fs = get_fs(); - set_fs(KERNEL_DS); - has_dumped = 1; - - fill_dump(cprm->regs, &dump); - - strncpy(dump.u_comm, current->comm, sizeof(current->comm)); - dump.u_ar0 = offsetof(struct user32, regs); - dump.signal = cprm->siginfo->si_signo; - - /* - * If the size of the dump file exceeds the rlimit, then see - * what would happen if we wrote the stack, but not the data - * area. - */ - if ((dump.u_dsize + dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) - dump.u_dsize = 0; - - /* Make sure we have enough room to write the stack and data areas. */ - if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) - dump.u_ssize = 0; - - /* make sure we actually have a data and stack area to dump */ - set_fs(USER_DS); - if (!access_ok((void *) (unsigned long)START_DATA(dump), - dump.u_dsize << PAGE_SHIFT)) - dump.u_dsize = 0; - if (!access_ok((void *) (unsigned long)START_STACK(dump), - dump.u_ssize << PAGE_SHIFT)) - dump.u_ssize = 0; - - set_fs(KERNEL_DS); - /* struct user */ - if (!dump_emit(cprm, &dump, sizeof(dump))) - goto end_coredump; - /* Now dump all of the user data. Include malloced stuff as well */ - if (!dump_skip(cprm, PAGE_SIZE - sizeof(dump))) - goto end_coredump; - /* now we start writing out the user space info */ - set_fs(USER_DS); - /* Dump the data area */ - if (dump.u_dsize != 0) { - dump_start = START_DATA(dump); - dump_size = dump.u_dsize << PAGE_SHIFT; - if (!dump_emit(cprm, (void *)dump_start, dump_size)) - goto end_coredump; - } - /* Now prepare to dump the stack area */ - if (dump.u_ssize != 0) { - dump_start = START_STACK(dump); - dump_size = dump.u_ssize << PAGE_SHIFT; - if (!dump_emit(cprm, (void *)dump_start, dump_size)) - goto end_coredump; - } -end_coredump: - set_fs(fs); - return has_dumped; -} -#endif /* * create_aout_tables() parses the env- and arg-strings in new user diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index ca9725f18e00..aa0f1e53113f 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -34,92 +34,10 @@ static int load_aout_binary(struct linux_binprm *); static int load_aout_library(struct file*); -#ifdef CONFIG_COREDUMP -/* - * Routine writes a core dump image in the current directory. - * Currently only a stub-function. - * - * Note that setuid/setgid files won't make a core-dump if the uid/gid - * changed due to the set[u|g]id. It's enforced by the "current->mm->dumpable" - * field, which also makes sure the core-dumps won't be recursive if the - * dumping of the process results in another error.. - */ -static int aout_core_dump(struct coredump_params *cprm) -{ - mm_segment_t fs; - int has_dumped = 0; - void __user *dump_start; - int dump_size; - struct user dump; -#ifdef __alpha__ -# define START_DATA(u) ((void __user *)u.start_data) -#else -# define START_DATA(u) ((void __user *)((u.u_tsize << PAGE_SHIFT) + \ - u.start_code)) -#endif -# define START_STACK(u) ((void __user *)u.start_stack) - - fs = get_fs(); - set_fs(KERNEL_DS); - has_dumped = 1; - strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm)); - dump.u_ar0 = offsetof(struct user, regs); - dump.signal = cprm->siginfo->si_signo; - aout_dump_thread(cprm->regs, &dump); - -/* If the size of the dump file exceeds the rlimit, then see what would happen - if we wrote the stack, but not the data area. */ - if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit) - dump.u_dsize = 0; - -/* Make sure we have enough room to write the stack and data areas. */ - if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) - dump.u_ssize = 0; - -/* make sure we actually have a data and stack area to dump */ - set_fs(USER_DS); - if (!access_ok(START_DATA(dump), dump.u_dsize << PAGE_SHIFT)) - dump.u_dsize = 0; - if (!access_ok(START_STACK(dump), dump.u_ssize << PAGE_SHIFT)) - dump.u_ssize = 0; - - set_fs(KERNEL_DS); -/* struct user */ - if (!dump_emit(cprm, &dump, sizeof(dump))) - goto end_coredump; -/* Now dump all of the user data. Include malloced stuff as well */ - if (!dump_skip(cprm, PAGE_SIZE - sizeof(dump))) - goto end_coredump; -/* now we start writing out the user space info */ - set_fs(USER_DS); -/* Dump the data area */ - if (dump.u_dsize != 0) { - dump_start = START_DATA(dump); - dump_size = dump.u_dsize << PAGE_SHIFT; - if (!dump_emit(cprm, dump_start, dump_size)) - goto end_coredump; - } -/* Now prepare to dump the stack area */ - if (dump.u_ssize != 0) { - dump_start = START_STACK(dump); - dump_size = dump.u_ssize << PAGE_SHIFT; - if (!dump_emit(cprm, dump_start, dump_size)) - goto end_coredump; - } -end_coredump: - set_fs(fs); - return has_dumped; -} -#else -#define aout_core_dump NULL -#endif - static struct linux_binfmt aout_format = { .module = THIS_MODULE, .load_binary = load_aout_binary, .load_shlib = load_aout_library, - .core_dump = aout_core_dump, - .min_coredump = PAGE_SIZE }; #define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE)