x86: clean up arch/x86/ia32/aout32.c
White space and coding style clenaup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
Ingo Molnar
parent
d94448b1fd
commit
8edf8bee88
1 changed files with 114 additions and 96 deletions
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@ -36,38 +36,44 @@
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#undef WARN_OLD
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#undef CORE_DUMP /* probably broken */
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static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
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static int load_aout_library(struct file*);
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static int load_aout_binary(struct linux_binprm *, struct pt_regs *regs);
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static int load_aout_library(struct file *);
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#ifdef CORE_DUMP
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static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit);
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static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file,
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unsigned long limit);
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/*
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* fill in the user structure for a core dump..
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*/
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static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
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static void dump_thread32(struct pt_regs *regs, struct user32 *dump)
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{
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u32 fs,gs;
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u32 fs, gs;
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/* changed the size calculations - should hopefully work better. lbt */
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dump->magic = CMAGIC;
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dump->start_code = 0;
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dump->start_stack = regs->rsp & ~(PAGE_SIZE - 1);
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dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
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dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
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dump->u_dsize = ((unsigned long)
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(current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
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dump->u_dsize -= dump->u_tsize;
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dump->u_ssize = 0;
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dump->u_debugreg[0] = current->thread.debugreg0;
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dump->u_debugreg[1] = current->thread.debugreg1;
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dump->u_debugreg[2] = current->thread.debugreg2;
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dump->u_debugreg[3] = current->thread.debugreg3;
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dump->u_debugreg[4] = 0;
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dump->u_debugreg[5] = 0;
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dump->u_debugreg[6] = current->thread.debugreg6;
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dump->u_debugreg[7] = current->thread.debugreg7;
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dump->u_debugreg[0] = current->thread.debugreg0;
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dump->u_debugreg[1] = current->thread.debugreg1;
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dump->u_debugreg[2] = current->thread.debugreg2;
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dump->u_debugreg[3] = current->thread.debugreg3;
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dump->u_debugreg[4] = 0;
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dump->u_debugreg[5] = 0;
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dump->u_debugreg[6] = current->thread.debugreg6;
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dump->u_debugreg[7] = current->thread.debugreg7;
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if (dump->start_stack < 0xc0000000)
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dump->u_ssize = ((unsigned long) (0xc0000000 - dump->start_stack)) >> PAGE_SHIFT;
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if (dump->start_stack < 0xc0000000) {
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unsigned long tmp;
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tmp = (unsigned long) (0xc0000000 - dump->start_stack);
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dump->u_ssize = tmp >> PAGE_SHIFT;
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}
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dump->regs.ebx = regs->rbx;
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dump->regs.ecx = regs->rcx;
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@ -79,7 +85,7 @@ static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
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dump->regs.ds = current->thread.ds;
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dump->regs.es = current->thread.es;
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asm("movl %%fs,%0" : "=r" (fs)); dump->regs.fs = fs;
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asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs;
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asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs;
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dump->regs.orig_eax = regs->orig_rax;
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dump->regs.eip = regs->rip;
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dump->regs.cs = regs->cs;
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@ -90,7 +96,7 @@ static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
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#if 1 /* FIXME */
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dump->u_fpvalid = 0;
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#else
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dump->u_fpvalid = dump_fpu (regs, &dump->i387);
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dump->u_fpvalid = dump_fpu(regs, &dump->i387);
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#endif
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}
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@ -128,15 +134,19 @@ static int dump_write(struct file *file, const void *addr, int nr)
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return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
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}
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#define DUMP_WRITE(addr, nr) \
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#define DUMP_WRITE(addr, nr) \
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if (!dump_write(file, (void *)(addr), (nr))) \
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goto end_coredump;
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#define DUMP_SEEK(offset) \
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if (file->f_op->llseek) { \
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if (file->f_op->llseek(file,(offset),0) != (offset)) \
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goto end_coredump; \
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} else file->f_pos = (offset)
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#define DUMP_SEEK(offset) \
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if (file->f_op->llseek) { \
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if (file->f_op->llseek(file, (offset), 0) != (offset)) \
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goto end_coredump; \
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} else \
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file->f_pos = (offset)
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#define START_DATA() (u.u_tsize << PAGE_SHIFT)
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#define START_STACK(u) (u.start_stack)
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/*
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* Routine writes a core dump image in the current directory.
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@ -148,62 +158,70 @@ if (file->f_op->llseek) { \
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* dumping of the process results in another error..
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*/
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static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit)
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static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file,
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unsigned long limit)
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{
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mm_segment_t fs;
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int has_dumped = 0;
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unsigned long dump_start, dump_size;
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struct user32 dump;
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# define START_DATA(u) (u.u_tsize << PAGE_SHIFT)
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# define START_STACK(u) (u.start_stack)
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fs = get_fs();
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set_fs(KERNEL_DS);
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has_dumped = 1;
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current->flags |= PF_DUMPCORE;
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strncpy(dump.u_comm, current->comm, sizeof(current->comm));
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dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) - ((unsigned long)(&dump)));
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strncpy(dump.u_comm, current->comm, sizeof(current->comm));
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dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) -
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((unsigned long)(&dump)));
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dump.signal = signr;
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dump_thread32(regs, &dump);
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/* If the size of the dump file exceeds the rlimit, then see what would happen
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if we wrote the stack, but not the data area. */
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/*
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* If the size of the dump file exceeds the rlimit, then see
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* what would happen if we wrote the stack, but not the data
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* area.
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*/
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if ((dump.u_dsize + dump.u_ssize + 1) * PAGE_SIZE > limit)
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dump.u_dsize = 0;
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/* Make sure we have enough room to write the stack and data areas. */
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/* Make sure we have enough room to write the stack and data areas. */
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if ((dump.u_ssize + 1) * PAGE_SIZE > limit)
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dump.u_ssize = 0;
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/* make sure we actually have a data and stack area to dump */
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/* make sure we actually have a data and stack area to dump */
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set_fs(USER_DS);
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if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
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if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump),
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dump.u_dsize << PAGE_SHIFT))
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dump.u_dsize = 0;
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if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
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if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump),
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dump.u_ssize << PAGE_SHIFT))
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dump.u_ssize = 0;
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set_fs(KERNEL_DS);
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/* struct user */
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DUMP_WRITE(&dump,sizeof(dump));
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/* Now dump all of the user data. Include malloced stuff as well */
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/* struct user */
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DUMP_WRITE(&dump, sizeof(dump));
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/* Now dump all of the user data. Include malloced stuff as well */
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DUMP_SEEK(PAGE_SIZE);
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/* now we start writing out the user space info */
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/* now we start writing out the user space info */
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set_fs(USER_DS);
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/* Dump the data area */
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/* Dump the data area */
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if (dump.u_dsize != 0) {
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dump_start = START_DATA(dump);
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dump_size = dump.u_dsize << PAGE_SHIFT;
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DUMP_WRITE(dump_start,dump_size);
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DUMP_WRITE(dump_start, dump_size);
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}
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/* Now prepare to dump the stack area */
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/* Now prepare to dump the stack area */
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if (dump.u_ssize != 0) {
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dump_start = START_STACK(dump);
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dump_size = dump.u_ssize << PAGE_SHIFT;
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DUMP_WRITE(dump_start,dump_size);
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DUMP_WRITE(dump_start, dump_size);
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}
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/* Finally dump the task struct. Not be used by gdb, but could be useful */
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/*
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* Finally dump the task struct. Not be used by gdb, but
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* could be useful
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*/
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set_fs(KERNEL_DS);
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DUMP_WRITE(current,sizeof(*current));
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DUMP_WRITE(current, sizeof(*current));
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end_coredump:
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set_fs(fs);
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return has_dumped;
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@ -217,35 +235,34 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, u
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*/
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static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm)
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{
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u32 __user *argv;
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u32 __user *envp;
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u32 __user *sp;
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int argc = bprm->argc;
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int envc = bprm->envc;
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u32 __user *argv, *envp, *sp;
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int argc = bprm->argc, envc = bprm->envc;
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sp = (u32 __user *) ((-(unsigned long)sizeof(u32)) & (unsigned long) p);
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sp -= envc+1;
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envp = sp;
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sp -= argc+1;
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argv = sp;
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put_user((unsigned long) envp,--sp);
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put_user((unsigned long) argv,--sp);
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put_user(argc,--sp);
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put_user((unsigned long) envp, --sp);
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put_user((unsigned long) argv, --sp);
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put_user(argc, --sp);
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current->mm->arg_start = (unsigned long) p;
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while (argc-->0) {
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while (argc-- > 0) {
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char c;
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put_user((u32)(unsigned long)p,argv++);
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put_user((u32)(unsigned long)p, argv++);
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do {
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get_user(c,p++);
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get_user(c, p++);
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} while (c);
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}
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put_user(0, argv);
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current->mm->arg_end = current->mm->env_start = (unsigned long) p;
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while (envc-->0) {
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while (envc-- > 0) {
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char c;
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put_user((u32)(unsigned long)p,envp++);
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put_user((u32)(unsigned long)p, envp++);
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do {
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get_user(c,p++);
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get_user(c, p++);
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} while (c);
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}
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put_user(0, envp);
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@ -257,20 +274,18 @@ static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm)
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* These are the functions used to load a.out style executables and shared
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* libraries. There is no binary dependent code anywhere else.
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*/
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static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs)
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{
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unsigned long error, fd_offset, rlim;
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struct exec ex;
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unsigned long error;
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unsigned long fd_offset;
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unsigned long rlim;
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int retval;
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ex = *((struct exec *) bprm->buf); /* exec-header */
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if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != OMAGIC &&
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N_MAGIC(ex) != QMAGIC && N_MAGIC(ex) != NMAGIC) ||
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N_TRSIZE(ex) || N_DRSIZE(ex) ||
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i_size_read(bprm->file->f_path.dentry->d_inode) < ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
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i_size_read(bprm->file->f_path.dentry->d_inode) <
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ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
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return -ENOEXEC;
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}
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@ -291,13 +306,13 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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if (retval)
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return retval;
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regs->cs = __USER32_CS;
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regs->cs = __USER32_CS;
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regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 =
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regs->r13 = regs->r14 = regs->r15 = 0;
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/* OK, This is the point of no return */
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set_personality(PER_LINUX);
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set_thread_flag(TIF_IA32);
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set_thread_flag(TIF_IA32);
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clear_thread_flag(TIF_ABI_PENDING);
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current->mm->end_code = ex.a_text +
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@ -311,7 +326,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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current->mm->mmap = NULL;
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compute_creds(bprm);
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current->flags &= ~PF_FORKNOEXEC;
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current->flags &= ~PF_FORKNOEXEC;
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if (N_MAGIC(ex) == OMAGIC) {
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unsigned long text_addr, map_size;
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@ -338,30 +353,30 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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send_sig(SIGKILL, current, 0);
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return error;
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}
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flush_icache_range(text_addr, text_addr+ex.a_text+ex.a_data);
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} else {
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#ifdef WARN_OLD
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static unsigned long error_time, error_time2;
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if ((ex.a_text & 0xfff || ex.a_data & 0xfff) &&
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(N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ)
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{
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(N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ) {
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printk(KERN_NOTICE "executable not page aligned\n");
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error_time2 = jiffies;
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}
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if ((fd_offset & ~PAGE_MASK) != 0 &&
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(jiffies-error_time) > 5*HZ)
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{
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printk(KERN_WARNING
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"fd_offset is not page aligned. Please convert program: %s\n",
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(jiffies - error_time) > 5*HZ) {
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printk(KERN_WARNING
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"fd_offset is not page aligned. Please convert "
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"program: %s\n",
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bprm->file->f_path.dentry->d_name.name);
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error_time = jiffies;
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}
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#endif
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if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) {
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if (!bprm->file->f_op->mmap || (fd_offset & ~PAGE_MASK) != 0) {
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loff_t pos = fd_offset;
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down_write(¤t->mm->mmap_sem);
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do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
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up_write(¤t->mm->mmap_sem);
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@ -376,9 +391,10 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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down_write(¤t->mm->mmap_sem);
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error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text,
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PROT_READ | PROT_EXEC,
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MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT,
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fd_offset);
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PROT_READ | PROT_EXEC,
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MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE |
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MAP_EXECUTABLE | MAP_32BIT,
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fd_offset);
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up_write(¤t->mm->mmap_sem);
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if (error != N_TXTADDR(ex)) {
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@ -387,9 +403,10 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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}
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down_write(¤t->mm->mmap_sem);
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error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
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error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
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PROT_READ | PROT_WRITE | PROT_EXEC,
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MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT,
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MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE |
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MAP_EXECUTABLE | MAP_32BIT,
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fd_offset + ex.a_text);
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up_write(¤t->mm->mmap_sem);
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if (error != N_DATADDR(ex)) {
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@ -403,9 +420,9 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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set_brk(current->mm->start_brk, current->mm->brk);
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retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT);
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if (retval < 0) {
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/* Someone check-me: is this error path enough? */
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send_sig(SIGKILL, current, 0);
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if (retval < 0) {
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/* Someone check-me: is this error path enough? */
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send_sig(SIGKILL, current, 0);
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return retval;
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}
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@ -414,7 +431,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
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/* start thread */
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asm volatile("movl %0,%%fs" :: "r" (0)); \
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asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS));
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load_gs_index(0);
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load_gs_index(0);
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(regs)->rip = ex.a_entry;
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(regs)->rsp = current->mm->start_stack;
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(regs)->eflags = 0x200;
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|
|
@ -425,7 +442,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
|
|||
set_fs(USER_DS);
|
||||
if (unlikely(current->ptrace & PT_PTRACED)) {
|
||||
if (current->ptrace & PT_TRACE_EXEC)
|
||||
ptrace_notify ((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
|
||||
ptrace_notify((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
|
||||
else
|
||||
send_sig(SIGTRAP, current, 0);
|
||||
}
|
||||
|
|
@ -434,9 +451,8 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
|
|||
|
||||
static int load_aout_library(struct file *file)
|
||||
{
|
||||
struct inode * inode;
|
||||
unsigned long bss, start_addr, len;
|
||||
unsigned long error;
|
||||
struct inode *inode;
|
||||
unsigned long bss, start_addr, len, error;
|
||||
int retval;
|
||||
struct exec ex;
|
||||
|
||||
|
|
@ -450,7 +466,8 @@ static int load_aout_library(struct file *file)
|
|||
/* We come in here for the regular a.out style of shared libraries */
|
||||
if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != QMAGIC) || N_TRSIZE(ex) ||
|
||||
N_DRSIZE(ex) || ((ex.a_entry & 0xfff) && N_MAGIC(ex) == ZMAGIC) ||
|
||||
i_size_read(inode) < ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
|
||||
i_size_read(inode) <
|
||||
ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -467,10 +484,10 @@ static int load_aout_library(struct file *file)
|
|||
|
||||
#ifdef WARN_OLD
|
||||
static unsigned long error_time;
|
||||
if ((jiffies-error_time) > 5*HZ)
|
||||
{
|
||||
printk(KERN_WARNING
|
||||
"N_TXTOFF is not page aligned. Please convert library: %s\n",
|
||||
if ((jiffies-error_time) > 5*HZ) {
|
||||
printk(KERN_WARNING
|
||||
"N_TXTOFF is not page aligned. Please convert "
|
||||
"library: %s\n",
|
||||
file->f_path.dentry->d_name.name);
|
||||
error_time = jiffies;
|
||||
}
|
||||
|
|
@ -478,11 +495,12 @@ static int load_aout_library(struct file *file)
|
|||
down_write(¤t->mm->mmap_sem);
|
||||
do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
|
||||
up_write(¤t->mm->mmap_sem);
|
||||
|
||||
|
||||
file->f_op->read(file, (char __user *)start_addr,
|
||||
ex.a_text + ex.a_data, &pos);
|
||||
flush_icache_range((unsigned long) start_addr,
|
||||
(unsigned long) start_addr + ex.a_text + ex.a_data);
|
||||
(unsigned long) start_addr + ex.a_text +
|
||||
ex.a_data);
|
||||
|
||||
retval = 0;
|
||||
goto out;
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue