X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fbinfmt_aout.c;h=f96eff04e11ab4a8b23f7489ee4b0de50e67e152;hb=17ebba1fe4da4b5d62782be8743e0e8231812af9;hp=f1f3f4192a609fbbd4be4232b0e525697787be98;hpb=a6f76f23d297f70e2a6b3ec607f7aeeea9e37e8d;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index f1f3f41..f96eff0 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -20,10 +20,11 @@ #include #include #include -#include #include #include #include +#include +#include #include #include @@ -32,7 +33,7 @@ static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs); static int load_aout_library(struct file*); -static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit); +static int aout_core_dump(struct coredump_params *cprm); static struct linux_binfmt aout_format = { .module = THIS_MODULE, @@ -60,26 +61,6 @@ static int set_brk(unsigned long start, unsigned long end) } /* - * These are the only things you should do on a core-file: use only these - * macros to write out all the necessary info. - */ - -static int dump_write(struct file *file, const void *addr, int nr) -{ - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; -} - -#define DUMP_WRITE(addr, nr) \ - if (!dump_write(file, (void *)(addr), (nr))) \ - goto end_coredump; - -#define DUMP_SEEK(offset) \ -if (file->f_op->llseek) { \ - if (file->f_op->llseek(file,(offset),0) != (offset)) \ - goto end_coredump; \ -} else file->f_pos = (offset) - -/* * Routine writes a core dump image in the current directory. * Currently only a stub-function. * @@ -89,103 +70,74 @@ if (file->f_op->llseek) { \ * dumping of the process results in another error.. */ -static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit) +static int aout_core_dump(struct coredump_params *cprm) { + struct file *file = cprm->file; mm_segment_t fs; int has_dumped = 0; - unsigned long dump_start, dump_size; + void __user *dump_start; + int dump_size; struct user dump; -#if defined(__alpha__) -# define START_DATA(u) (u.start_data) -#elif defined(__arm__) -# define START_DATA(u) ((u.u_tsize << PAGE_SHIFT) + u.start_code) -#elif defined(__sparc__) -# define START_DATA(u) (u.u_tsize) -#elif defined(__i386__) || defined(__mc68000__) || defined(__arch_um__) -# define START_DATA(u) (u.u_tsize << PAGE_SHIFT) -#endif -#ifdef __sparc__ -# define START_STACK(u) ((regs->u_regs[UREG_FP]) & ~(PAGE_SIZE - 1)) +#ifdef __alpha__ +# define START_DATA(u) ((void __user *)u.start_data) #else -# define START_STACK(u) (u.start_stack) +# 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; current->flags |= PF_DUMPCORE; strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm)); -#ifndef __sparc__ dump.u_ar0 = offsetof(struct user, regs); -#endif - dump.signal = signr; - aout_dump_thread(regs, &dump); + dump.signal = cprm->signr; + 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. */ -#ifdef __sparc__ - if ((dump.u_dsize + dump.u_ssize) > limit) - dump.u_dsize = 0; -#else - if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > limit) + if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit) dump.u_dsize = 0; -#endif /* Make sure we have enough room to write the stack and data areas. */ -#ifdef __sparc__ - if (dump.u_ssize > limit) - dump.u_ssize = 0; -#else - if ((dump.u_ssize + 1) * PAGE_SIZE > limit) + if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit) dump.u_ssize = 0; -#endif /* make sure we actually have a data and stack area to dump */ set_fs(USER_DS); -#ifdef __sparc__ - if (!access_ok(VERIFY_READ, (void __user *)START_DATA(dump), dump.u_dsize)) + if (!access_ok(VERIFY_READ, START_DATA(dump), dump.u_dsize << PAGE_SHIFT)) dump.u_dsize = 0; - if (!access_ok(VERIFY_READ, (void __user *)START_STACK(dump), dump.u_ssize)) + if (!access_ok(VERIFY_READ, START_STACK(dump), dump.u_ssize << PAGE_SHIFT)) dump.u_ssize = 0; -#else - if (!access_ok(VERIFY_READ, (void __user *)START_DATA(dump), dump.u_dsize << PAGE_SHIFT)) - dump.u_dsize = 0; - if (!access_ok(VERIFY_READ, (void __user *)START_STACK(dump), dump.u_ssize << PAGE_SHIFT)) - dump.u_ssize = 0; -#endif set_fs(KERNEL_DS); /* struct user */ - DUMP_WRITE(&dump,sizeof(dump)); + if (!dump_write(file, &dump, sizeof(dump))) + goto end_coredump; /* Now dump all of the user data. Include malloced stuff as well */ -#ifndef __sparc__ - DUMP_SEEK(PAGE_SIZE); -#endif + if (!dump_seek(cprm->file, 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); -#ifdef __sparc__ - dump_size = dump.u_dsize; -#else dump_size = dump.u_dsize << PAGE_SHIFT; -#endif - DUMP_WRITE(dump_start,dump_size); + if (!dump_write(file, dump_start, dump_size)) + goto end_coredump; } /* Now prepare to dump the stack area */ if (dump.u_ssize != 0) { dump_start = START_STACK(dump); -#ifdef __sparc__ - dump_size = dump.u_ssize; -#else dump_size = dump.u_ssize << PAGE_SHIFT; -#endif - DUMP_WRITE(dump_start,dump_size); + if (!dump_write(file, dump_start, dump_size)) + goto end_coredump; } /* Finally dump the task struct. Not be used by gdb, but could be useful */ set_fs(KERNEL_DS); - DUMP_WRITE(current,sizeof(*current)); + if (!dump_write(file, current, sizeof(*current))) + goto end_coredump; end_coredump: set_fs(fs); return has_dumped; @@ -205,29 +157,24 @@ static unsigned long __user *create_aout_tables(char __user *p, struct linux_bin int envc = bprm->envc; sp = (void __user *)((-(unsigned long)sizeof(char *)) & (unsigned long) p); -#ifdef __sparc__ - /* This imposes the proper stack alignment for a new process. */ - sp = (void __user *) (((unsigned long) sp) & ~7); - if ((envc+argc+3)&1) --sp; -#endif #ifdef __alpha__ /* whee.. test-programs are so much fun. */ put_user(0, --sp); put_user(0, --sp); if (bprm->loader) { put_user(0, --sp); - put_user(0x3eb, --sp); + put_user(1003, --sp); put_user(bprm->loader, --sp); - put_user(0x3ea, --sp); + put_user(1002, --sp); } put_user(bprm->exec, --sp); - put_user(0x3e9, --sp); + put_user(1001, --sp); #endif sp -= envc+1; envp = (char __user * __user *) sp; sp -= argc+1; argv = (char __user * __user *) sp; -#if defined(__i386__) || defined(__mc68000__) || defined(__arm__) || defined(__arch_um__) +#ifndef __alpha__ put_user((unsigned long) envp,--sp); put_user((unsigned long) argv,--sp); #endif @@ -288,7 +235,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) * size limits imposed on them by creating programs with large * arrays in the data or bss. */ - rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur; + rlim = rlimit(RLIMIT_DATA); if (rlim >= RLIM_INFINITY) rlim = ~0; if (ex.a_data + ex.a_bss > rlim) @@ -300,16 +247,12 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) return retval; /* OK, This is the point of no return */ -#if defined(__alpha__) +#ifdef __alpha__ SET_AOUT_PERSONALITY(bprm, ex); -#elif defined(__sparc__) - set_personality(PER_SUNOS); -#if !defined(__sparc_v9__) - memcpy(¤t->thread.core_exec, &ex, sizeof(struct exec)); -#endif #else set_personality(PER_LINUX); #endif + setup_new_exec(bprm); current->mm->end_code = ex.a_text + (current->mm->start_code = N_TXTADDR(ex)); @@ -322,24 +265,6 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) install_exec_creds(bprm); current->flags &= ~PF_FORKNOEXEC; -#ifdef __sparc__ - if (N_MAGIC(ex) == NMAGIC) { - loff_t pos = fd_offset; - /* Fuck me plenty... */ - /* */ - down_write(¤t->mm->mmap_sem); - error = do_brk(N_TXTADDR(ex), ex.a_text); - up_write(¤t->mm->mmap_sem); - bprm->file->f_op->read(bprm->file, (char *) N_TXTADDR(ex), - ex.a_text, &pos); - down_write(¤t->mm->mmap_sem); - error = do_brk(N_DATADDR(ex), ex.a_data); - up_write(¤t->mm->mmap_sem); - bprm->file->f_op->read(bprm->file, (char *) N_DATADDR(ex), - ex.a_data, &pos); - goto beyond_if; - } -#endif if (N_MAGIC(ex) == OMAGIC) { unsigned long text_addr, map_size; @@ -347,7 +272,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) text_addr = N_TXTADDR(ex); -#if defined(__alpha__) || defined(__sparc__) +#ifdef __alpha__ pos = fd_offset; map_size = ex.a_text+ex.a_data + PAGE_SIZE - 1; #else