diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 2 | ||||
| -rw-r--r-- | include/linux/mm_types.h | 15 | ||||
| -rw-r--r-- | include/linux/prctl.h | 3 |
3 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index d5dc6af..92a055b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1418,7 +1418,7 @@ extern int vma_adjust(struct vm_area_struct *vma, unsigned long start, extern struct vm_area_struct *vma_merge(struct mm_struct *, struct vm_area_struct *prev, unsigned long addr, unsigned long end, unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t, - struct mempolicy *); + struct mempolicy *, const char __user *); extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *); extern int split_vma(struct mm_struct *, struct vm_area_struct *, unsigned long addr, int new_below); diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 059839c..557f9b6 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -162,6 +162,10 @@ struct vm_area_struct { * linkage into the address_space->i_mmap prio tree, or * linkage to the list of like vmas hanging off its node, or * linkage of vma in the address_space->i_mmap_nonlinear list. + * + * For private anonymous mappings, a pointer to a null terminated string + * in the user process containing the name given to the vma, or NULL + * if unnamed. */ union { struct { @@ -171,6 +175,7 @@ struct vm_area_struct { } vm_set; struct raw_prio_tree_node prio_tree_node; + const char __user *anon_name; } shared; /* @@ -345,4 +350,14 @@ static inline cpumask_t *mm_cpumask(struct mm_struct *mm) return mm->cpu_vm_mask_var; } + +/* Return the name for an anonymous mapping or NULL for a file-backed mapping */ +static inline const char __user *vma_get_anon_name(struct vm_area_struct *vma) +{ + if (vma->vm_file) + return NULL; + + return vma->shared.anon_name; +} + #endif /* _LINUX_MM_TYPES_H */ diff --git a/include/linux/prctl.h b/include/linux/prctl.h index a3baeb2..dd90287 100644 --- a/include/linux/prctl.h +++ b/include/linux/prctl.h @@ -102,4 +102,7 @@ #define PR_MCE_KILL_GET 34 +#define PR_SET_VMA 0x53564d41 +# define PR_SET_VMA_ANON_NAME 0 + #endif /* _LINUX_PRCTL_H */ |