diff options
Diffstat (limited to 'fs/proc/nommu.c')
-rw-r--r-- | fs/proc/nommu.c | 71 |
1 files changed, 32 insertions, 39 deletions
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c index 3f87d2632947..b446d7ad0b0d 100644 --- a/fs/proc/nommu.c +++ b/fs/proc/nommu.c | |||
@@ -33,33 +33,33 @@ | |||
33 | #include "internal.h" | 33 | #include "internal.h" |
34 | 34 | ||
35 | /* | 35 | /* |
36 | * display a single VMA to a sequenced file | 36 | * display a single region to a sequenced file |
37 | */ | 37 | */ |
38 | int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) | 38 | static int nommu_region_show(struct seq_file *m, struct vm_region *region) |
39 | { | 39 | { |
40 | unsigned long ino = 0; | 40 | unsigned long ino = 0; |
41 | struct file *file; | 41 | struct file *file; |
42 | dev_t dev = 0; | 42 | dev_t dev = 0; |
43 | int flags, len; | 43 | int flags, len; |
44 | 44 | ||
45 | flags = vma->vm_flags; | 45 | flags = region->vm_flags; |
46 | file = vma->vm_file; | 46 | file = region->vm_file; |
47 | 47 | ||
48 | if (file) { | 48 | if (file) { |
49 | struct inode *inode = vma->vm_file->f_path.dentry->d_inode; | 49 | struct inode *inode = region->vm_file->f_path.dentry->d_inode; |
50 | dev = inode->i_sb->s_dev; | 50 | dev = inode->i_sb->s_dev; |
51 | ino = inode->i_ino; | 51 | ino = inode->i_ino; |
52 | } | 52 | } |
53 | 53 | ||
54 | seq_printf(m, | 54 | seq_printf(m, |
55 | "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", | 55 | "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n", |
56 | vma->vm_start, | 56 | region->vm_start, |
57 | vma->vm_end, | 57 | region->vm_end, |
58 | flags & VM_READ ? 'r' : '-', | 58 | flags & VM_READ ? 'r' : '-', |
59 | flags & VM_WRITE ? 'w' : '-', | 59 | flags & VM_WRITE ? 'w' : '-', |
60 | flags & VM_EXEC ? 'x' : '-', | 60 | flags & VM_EXEC ? 'x' : '-', |
61 | flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', | 61 | flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', |
62 | ((loff_t)vma->vm_pgoff) << PAGE_SHIFT, | 62 | ((loff_t)region->vm_pgoff) << PAGE_SHIFT, |
63 | MAJOR(dev), MINOR(dev), ino, &len); | 63 | MAJOR(dev), MINOR(dev), ino, &len); |
64 | 64 | ||
65 | if (file) { | 65 | if (file) { |
@@ -75,61 +75,54 @@ int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) | |||
75 | } | 75 | } |
76 | 76 | ||
77 | /* | 77 | /* |
78 | * display a list of all the VMAs the kernel knows about | 78 | * display a list of all the REGIONs the kernel knows about |
79 | * - nommu kernals have a single flat list | 79 | * - nommu kernals have a single flat list |
80 | */ | 80 | */ |
81 | static int nommu_vma_list_show(struct seq_file *m, void *v) | 81 | static int nommu_region_list_show(struct seq_file *m, void *_p) |
82 | { | 82 | { |
83 | struct vm_area_struct *vma; | 83 | struct rb_node *p = _p; |
84 | 84 | ||
85 | vma = rb_entry((struct rb_node *) v, struct vm_area_struct, vm_rb); | 85 | return nommu_region_show(m, rb_entry(p, struct vm_region, vm_rb)); |
86 | return nommu_vma_show(m, vma); | ||
87 | } | 86 | } |
88 | 87 | ||
89 | static void *nommu_vma_list_start(struct seq_file *m, loff_t *_pos) | 88 | static void *nommu_region_list_start(struct seq_file *m, loff_t *_pos) |
90 | { | 89 | { |
91 | struct rb_node *_rb; | 90 | struct rb_node *p; |
92 | loff_t pos = *_pos; | 91 | loff_t pos = *_pos; |
93 | void *next = NULL; | ||
94 | 92 | ||
95 | down_read(&nommu_vma_sem); | 93 | down_read(&nommu_region_sem); |
96 | 94 | ||
97 | for (_rb = rb_first(&nommu_vma_tree); _rb; _rb = rb_next(_rb)) { | 95 | for (p = rb_first(&nommu_region_tree); p; p = rb_next(p)) |
98 | if (pos == 0) { | 96 | if (pos-- == 0) |
99 | next = _rb; | 97 | return p; |
100 | break; | 98 | return NULL; |
101 | } | ||
102 | pos--; | ||
103 | } | ||
104 | |||
105 | return next; | ||
106 | } | 99 | } |
107 | 100 | ||
108 | static void nommu_vma_list_stop(struct seq_file *m, void *v) | 101 | static void nommu_region_list_stop(struct seq_file *m, void *v) |
109 | { | 102 | { |
110 | up_read(&nommu_vma_sem); | 103 | up_read(&nommu_region_sem); |
111 | } | 104 | } |
112 | 105 | ||
113 | static void *nommu_vma_list_next(struct seq_file *m, void *v, loff_t *pos) | 106 | static void *nommu_region_list_next(struct seq_file *m, void *v, loff_t *pos) |
114 | { | 107 | { |
115 | (*pos)++; | 108 | (*pos)++; |
116 | return rb_next((struct rb_node *) v); | 109 | return rb_next((struct rb_node *) v); |
117 | } | 110 | } |
118 | 111 | ||
119 | static const struct seq_operations proc_nommu_vma_list_seqop = { | 112 | static struct seq_operations proc_nommu_region_list_seqop = { |
120 | .start = nommu_vma_list_start, | 113 | .start = nommu_region_list_start, |
121 | .next = nommu_vma_list_next, | 114 | .next = nommu_region_list_next, |
122 | .stop = nommu_vma_list_stop, | 115 | .stop = nommu_region_list_stop, |
123 | .show = nommu_vma_list_show | 116 | .show = nommu_region_list_show |
124 | }; | 117 | }; |
125 | 118 | ||
126 | static int proc_nommu_vma_list_open(struct inode *inode, struct file *file) | 119 | static int proc_nommu_region_list_open(struct inode *inode, struct file *file) |
127 | { | 120 | { |
128 | return seq_open(file, &proc_nommu_vma_list_seqop); | 121 | return seq_open(file, &proc_nommu_region_list_seqop); |
129 | } | 122 | } |
130 | 123 | ||
131 | static const struct file_operations proc_nommu_vma_list_operations = { | 124 | static const struct file_operations proc_nommu_region_list_operations = { |
132 | .open = proc_nommu_vma_list_open, | 125 | .open = proc_nommu_region_list_open, |
133 | .read = seq_read, | 126 | .read = seq_read, |
134 | .llseek = seq_lseek, | 127 | .llseek = seq_lseek, |
135 | .release = seq_release, | 128 | .release = seq_release, |
@@ -137,7 +130,7 @@ static const struct file_operations proc_nommu_vma_list_operations = { | |||
137 | 130 | ||
138 | static int __init proc_nommu_init(void) | 131 | static int __init proc_nommu_init(void) |
139 | { | 132 | { |
140 | proc_create("maps", S_IRUGO, NULL, &proc_nommu_vma_list_operations); | 133 | proc_create("maps", S_IRUGO, NULL, &proc_nommu_region_list_operations); |
141 | return 0; | 134 | return 0; |
142 | } | 135 | } |
143 | 136 | ||