/*
* display a single VMA to a sequenced file
*/
static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
int is_pid)
{
struct mm_struct *mm = vma->vm_mm;
struct proc_maps_private *priv = m->private;
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
int flags;
unsigned long long pgoff = 0;
flags = vma->vm_flags;
file = vma->vm_file;
if (file) {
struct inode *inode = file_inode(vma->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
}
seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
"%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
vma->vm_start,
vma->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
pgoff,
MAJOR(dev), MINOR(dev), ino);
if (file) {
seq_pad(m, ' ');
seq_file_path(m, file, "");
} else if (mm) {
pid_t tid = pid_of_stack(priv, vma, is_pid);
if (tid != 0) {
seq_pad(m, ' ');
/*
* Thread stack in /proc/PID/task/TID/maps or
* the main process stack.
*/
if (!is_pid || (vma->vm_start <= mm->start_stack &&
vma->vm_end >= mm->start_stack))
seq_printf(m, "[stack]");
else
seq_printf(m, "[stack:%d]", tid);
}
}
seq_putc(m, '\n');
return 0;
}
/*
* display a single VMA to a sequenced file
*/
static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
int is_pid)
{
struct mm_struct *mm = vma->vm_mm;
struct proc_maps_private *priv = m->private;
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
int flags;
unsigned long long pgoff = 0;
flags = vma->vm_flags;
file = vma->vm_file;
if (file) {
struct inode *inode = file_inode(vma->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
}
seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
"%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
vma->vm_start,
vma->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
pgoff,
MAJOR(dev), MINOR(dev), ino);
if (file) {
seq_pad(m, ' ');
seq_file_path(m, file, "");
} else if (mm && is_stack(priv, vma, is_pid)) {
seq_pad(m, ' ');
seq_printf(m, "[stack]");
}
seq_putc(m, '\n');
return 0;
}
/*
* display a single region to a sequenced file
*/
static int nommu_region_show(struct seq_file *m, struct vm_region *region)
{
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
int flags;
flags = region->vm_flags;
file = region->vm_file;
if (file) {
struct inode *inode;
file = vmr_pr_or_file(region);
inode = file_inode(file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
}
seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
"%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
region->vm_start,
region->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
((loff_t)region->vm_pgoff) << PAGE_SHIFT,
MAJOR(dev), MINOR(dev), ino);
if (file) {
seq_pad(m, ' ');
seq_file_path(m, file, "");
}
seq_putc(m, '\n');
return 0;
}