1 files changed, 115 insertions, 97 deletions

diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index f82e1a94fcb7..a764e4e95314 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -36,38 +36,44 @@
 #undef WARN_OLD
 #undef CORE_DUMP /* probably broken */
 
-static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
-static int load_aout_library(struct file*);
+static int load_aout_binary(struct linux_binprm *, struct pt_regs *regs);
+static int load_aout_library(struct file *);
 
 #ifdef CORE_DUMP
-static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit);
+static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file,
+                          unsigned long limit);
 
 /*
  * fill in the user structure for a core dump..
  */
-static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
+static void dump_thread32(struct pt_regs *regs, struct user32 *dump)
 {
-        u32 fs,gs;
+        u32 fs, gs;
 
 /* changed the size calculations - should hopefully work better. lbt */
         dump->magic = CMAGIC;
         dump->start_code = 0;
         dump->start_stack = regs->rsp & ~(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 = ((unsigned long)
+                         (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
         dump->u_dsize -= dump->u_tsize;
         dump->u_ssize = 0;
-        dump->u_debugreg[0] = current->thread.debugreg0;  
-        dump->u_debugreg[1] = current->thread.debugreg1;  
-        dump->u_debugreg[2] = current->thread.debugreg2;  
-        dump->u_debugreg[3] = current->thread.debugreg3;  
-        dump->u_debugreg[4] = 0;  
-        dump->u_debugreg[5] = 0;  
-        dump->u_debugreg[6] = current->thread.debugreg6;  
-        dump->u_debugreg[7] = current->thread.debugreg7;  
-
-        if (dump->start_stack < 0xc0000000)
-                dump->u_ssize = ((unsigned long) (0xc0000000 - dump->start_stack)) >> PAGE_SHIFT;
+        dump->u_debugreg[0] = current->thread.debugreg0;
+        dump->u_debugreg[1] = current->thread.debugreg1;
+        dump->u_debugreg[2] = current->thread.debugreg2;
+        dump->u_debugreg[3] = current->thread.debugreg3;
+        dump->u_debugreg[4] = 0;
+        dump->u_debugreg[5] = 0;
+        dump->u_debugreg[6] = current->thread.debugreg6;
+        dump->u_debugreg[7] = current->thread.debugreg7;
+
+        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->rbx;
         dump->regs.ecx = regs->rcx;
@@ -79,7 +85,7 @@ static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
         dump->regs.ds = current->thread.ds;
         dump->regs.es = current->thread.es;
         asm("movl %%fs,%0" : "=r" (fs)); dump->regs.fs = fs;
-        asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs; 
+        asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs;
         dump->regs.orig_eax = regs->orig_rax;
         dump->regs.eip = regs->rip;
         dump->regs.cs = regs->cs;
@@ -90,7 +96,7 @@ static void dump_thread32(struct pt_regs * regs, struct user32 * dump)
 #if 1 /* FIXME */
         dump->u_fpvalid = 0;
 #else
-        dump->u_fpvalid = dump_fpu (regs, &dump->i387);
+        dump->u_fpvalid = dump_fpu(regs, &dump->i387);
 #endif
 }
 
@@ -128,15 +134,19 @@ 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)    \
+#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)
+#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)
+
+#define START_DATA()    (u.u_tsize << PAGE_SHIFT)
+#define START_STACK(u)  (u.start_stack)
 
 /*
  * Routine writes a core dump image in the current directory.
@@ -148,62 +158,70 @@ 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(long signr, struct pt_regs *regs, struct file *file,
+                          unsigned long limit)
 {
         mm_segment_t fs;
         int has_dumped = 0;
         unsigned long dump_start, dump_size;
         struct user32 dump;
-#       define START_DATA(u)    (u.u_tsize << PAGE_SHIFT)
-#       define START_STACK(u)   (u.start_stack)
 
         fs = get_fs();
         set_fs(KERNEL_DS);
         has_dumped = 1;
         current->flags |= PF_DUMPCORE;
-        strncpy(dump.u_comm, current->comm, sizeof(current->comm));
-        dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) - ((unsigned long)(&dump)));
+        strncpy(dump.u_comm, current->comm, sizeof(current->comm));
+        dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) -
+                           ((unsigned long)(&dump)));
         dump.signal = signr;
         dump_thread32(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 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 > limit)
                 dump.u_dsize = 0;
 
-/* Make sure we have enough room to write the stack and data areas. */
+        /* Make sure we have enough room to write the stack and data areas. */
         if ((dump.u_ssize + 1) * PAGE_SIZE > limit)
                 dump.u_ssize = 0;
 
-/* make sure we actually have a data and stack area to dump */
+        /* make sure we actually have a data and stack area to dump */
         set_fs(USER_DS);
-        if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
+        if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_DATA(dump),
+                       dump.u_dsize << PAGE_SHIFT))
                 dump.u_dsize = 0;
-        if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
+        if (!access_ok(VERIFY_READ, (void *) (unsigned long)START_STACK(dump),
+                       dump.u_ssize << PAGE_SHIFT))
                 dump.u_ssize = 0;
 
         set_fs(KERNEL_DS);
-/* struct user */
-        DUMP_WRITE(&dump,sizeof(dump));
-/* Now dump all of the user data.  Include malloced stuff as well */
+        /* struct user */
+        DUMP_WRITE(&dump, sizeof(dump));
+        /* Now dump all of the user data.  Include malloced stuff as well */
         DUMP_SEEK(PAGE_SIZE);
-/* now we start writing out the user space info */
+        /* now we start writing out the user space info */
         set_fs(USER_DS);
-/* Dump the data area */
+        /* Dump the data area */
         if (dump.u_dsize != 0) {
                 dump_start = START_DATA(dump);
                 dump_size = dump.u_dsize << PAGE_SHIFT;
-                DUMP_WRITE(dump_start,dump_size);
+                DUMP_WRITE(dump_start, dump_size);
         }
-/* Now prepare to dump the stack area */
+        /* Now prepare to dump the stack area */
         if (dump.u_ssize != 0) {
                 dump_start = START_STACK(dump);
                 dump_size = dump.u_ssize << PAGE_SHIFT;
-                DUMP_WRITE(dump_start,dump_size);
+                DUMP_WRITE(dump_start, dump_size);
         }
-/* Finally dump the task struct.  Not be used by gdb, but could be useful */
+        /*
+         * Finally dump the task struct.  Not be used by gdb, but
+         * could be useful
+         */
         set_fs(KERNEL_DS);
-        DUMP_WRITE(current,sizeof(*current));
+        DUMP_WRITE(current, sizeof(*current));
 end_coredump:
         set_fs(fs);
         return has_dumped;
@@ -217,35 +235,34 @@ end_coredump:
  */
 static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm)
 {
-        u32 __user *argv;
-        u32 __user *envp;
-        u32 __user *sp;
-        int argc = bprm->argc;
-        int envc = bprm->envc;
+        u32 __user *argv, *envp, *sp;
+        int argc = bprm->argc, envc = bprm->envc;
 
         sp = (u32 __user *) ((-(unsigned long)sizeof(u32)) & (unsigned long) p);
         sp -= envc+1;
         envp = sp;
         sp -= argc+1;
         argv = sp;
-        put_user((unsigned long) envp,--sp);
-        put_user((unsigned long) argv,--sp);
-        put_user(argc,--sp);
+        put_user((unsigned long) envp, --sp);
+        put_user((unsigned long) argv, --sp);
+        put_user(argc, --sp);
         current->mm->arg_start = (unsigned long) p;
-        while (argc-->0) {
+        while (argc-- > 0) {
                 char c;
-                put_user((u32)(unsigned long)p,argv++);
+
+                put_user((u32)(unsigned long)p, argv++);
                 do {
-                        get_user(c,p++);
+                        get_user(c, p++);
                 } while (c);
         }
         put_user(0, argv);
         current->mm->arg_end = current->mm->env_start = (unsigned long) p;
-        while (envc-->0) {
+        while (envc-- > 0) {
                 char c;
-                put_user((u32)(unsigned long)p,envp++);
+
+                put_user((u32)(unsigned long)p, envp++);
                 do {
-                        get_user(c,p++);
+                        get_user(c, p++);
                 } while (c);
         }
         put_user(0, envp);
@@ -257,20 +274,18 @@ static u32 __user *create_aout_tables(char __user *p, struct linux_binprm *bprm)
  * These are the functions used to load a.out style executables and shared
  * libraries.  There is no binary dependent code anywhere else.
  */
-
-static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
+static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 {
+        unsigned long error, fd_offset, rlim;
         struct exec ex;
-        unsigned long error;
-        unsigned long fd_offset;
-        unsigned long rlim;
         int retval;
 
         ex = *((struct exec *) bprm->buf);              /* exec-header */
         if ((N_MAGIC(ex) != ZMAGIC && N_MAGIC(ex) != OMAGIC &&
              N_MAGIC(ex) != QMAGIC && N_MAGIC(ex) != NMAGIC) ||
             N_TRSIZE(ex) || N_DRSIZE(ex) ||
-            i_size_read(bprm->file->f_path.dentry->d_inode) < ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
+            i_size_read(bprm->file->f_path.dentry->d_inode) <
+            ex.a_text+ex.a_data+N_SYMSIZE(ex)+N_TXTOFF(ex)) {
                 return -ENOEXEC;
         }
 
@@ -291,13 +306,13 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
         if (retval)
                 return retval;
 
-        regs->cs = __USER32_CS; 
+        regs->cs = __USER32_CS;
         regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 =
                 regs->r13 = regs->r14 = regs->r15 = 0;
 
         /* OK, This is the point of no return */
         set_personality(PER_LINUX);
-        set_thread_flag(TIF_IA32); 
+        set_thread_flag(TIF_IA32);
         clear_thread_flag(TIF_ABI_PENDING);
 
         current->mm->end_code = ex.a_text +
@@ -311,7 +326,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 
         current->mm->mmap = NULL;
         compute_creds(bprm);
-        current->flags &= ~PF_FORKNOEXEC;
+        current->flags &= ~PF_FORKNOEXEC;
 
         if (N_MAGIC(ex) == OMAGIC) {
                 unsigned long text_addr, map_size;
@@ -338,30 +353,30 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
                         send_sig(SIGKILL, current, 0);
                         return error;
                 }
-                         
+
                 flush_icache_range(text_addr, text_addr+ex.a_text+ex.a_data);
         } else {
 #ifdef WARN_OLD
                 static unsigned long error_time, error_time2;
                 if ((ex.a_text & 0xfff || ex.a_data & 0xfff) &&
-                    (N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ)
-                {
+                    (N_MAGIC(ex) != NMAGIC) && (jiffies-error_time2) > 5*HZ) {
                         printk(KERN_NOTICE "executable not page aligned\n");
                         error_time2 = jiffies;
                 }
 
                 if ((fd_offset & ~PAGE_MASK) != 0 &&
-                    (jiffies-error_time) > 5*HZ)
-                {
-                        printk(KERN_WARNING 
-                               "fd_offset is not page aligned. Please convert program: %s\n",
+                    (jiffies - error_time) > 5*HZ) {
+                        printk(KERN_WARNING
+                               "fd_offset is not page aligned. Please convert "
+                               "program: %s\n",
                                bprm->file->f_path.dentry->d_name.name);
                         error_time = jiffies;
                 }
 #endif
 
-                if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) {
+                if (!bprm->file->f_op->mmap || (fd_offset & ~PAGE_MASK) != 0) {
                         loff_t pos = fd_offset;
+
                         down_write(&current->mm->mmap_sem);
                         do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
                         up_write(&current->mm->mmap_sem);
@@ -376,9 +391,10 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 
                 down_write(&current->mm->mmap_sem);
                 error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text,
-                        PROT_READ | PROT_EXEC,
-                        MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT,
-                        fd_offset);
+                                PROT_READ | PROT_EXEC,
+                                MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE |
+                                MAP_EXECUTABLE | MAP_32BIT,
+                                fd_offset);
                 up_write(&current->mm->mmap_sem);
 
                 if (error != N_TXTADDR(ex)) {
@@ -387,9 +403,10 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
                 }
 
                 down_write(&current->mm->mmap_sem);
-                error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
+                error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
                                 PROT_READ | PROT_WRITE | PROT_EXEC,
-                                MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT,
+                                MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE |
+                                MAP_EXECUTABLE | MAP_32BIT,
                                 fd_offset + ex.a_text);
                 up_write(&current->mm->mmap_sem);
                 if (error != N_DATADDR(ex)) {
@@ -403,9 +420,9 @@ beyond_if:
         set_brk(current->mm->start_brk, current->mm->brk);
 
         retval = setup_arg_pages(bprm, IA32_STACK_TOP, EXSTACK_DEFAULT);
-        if (retval < 0) { 
-                /* Someone check-me: is this error path enough? */ 
-                send_sig(SIGKILL, current, 0); 
+        if (retval < 0) {
+                /* Someone check-me: is this error path enough? */
+                send_sig(SIGKILL, current, 0);
                 return retval;
         }
 
@@ -414,7 +431,7 @@ beyond_if:
         /* start thread */
         asm volatile("movl %0,%%fs" :: "r" (0)); \
         asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS));
-        load_gs_index(0); 
+        load_gs_index(0);
         (regs)->rip = ex.a_entry;
         (regs)->rsp = current->mm->start_stack;
         (regs)->eflags = 0x200;
@@ -425,7 +442,7 @@ beyond_if:
         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 @@ beyond_if:
 
 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(&current->mm->mmap_sem);
                 do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
                 up_write(&current->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;