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o Arbitrary mount path.

Browse Source 
o Name length 128.
This commit is contained in:
Alasdair Kergon 2001-09-17 16:55:31 +00:00
parent d8d1435e15
commit 749e7c1bb4
2 changed files with 18 additions and 11 deletions
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27
driver/device-mapper/dm-fs.c
View File

@ -47,6 +47,9 @@ struct line_c {
static int is_identifier(const char *str, int len)
{
if (len > DM_NAME_LEN - 1)
return 0;
while(len--) {
if (!isalnum(*str) && *str != '_')
return 0;
@ -92,21 +95,25 @@ int extract_line(struct text_region *line, void *private)
static struct file *open_error_file(struct file *table)
{
char *name;
struct file *f;
char *name, *buffer = (char *) kmalloc(PATH_MAX + 1, GFP_KERNEL);
name = kmalloc(PATH_MAX + 1, GFP_KERNEL);
if (!name)
if (!buffer)
return 0;
/* FIXME: Assumes path depth; avoid filp_open. */
sprintf(name, "/%s/%s/%s.err",
table->f_vfsmnt->mnt_mountpoint->d_name.name,
table->f_dentry->d_parent->d_name.name,
table->f_dentry->d_name.name);
/* Get path name */
name = d_path(table->f_dentry, table->f_vfsmnt, buffer, PATH_MAX + 1);
if (!name) {
kfree(buffer);
return 0;
}
/* Create error file */
strcat(name, ".err");
f = filp_open(name, O_WRONLY | O_TRUNC | O_CREAT, S_IRUGO);
kfree(name);
kfree(buffer);
if (f)
f->f_dentry->d_inode->u.generic_ip = NOT_A_TABLE;

2
driver/device-mapper/dm.h
View File

@ -137,7 +137,7 @@
#define NODE_SIZE L1_CACHE_BYTES
#define KEYS_PER_NODE (NODE_SIZE / sizeof(offset_t))
#define CHILDREN_PER_NODE (KEYS_PER_NODE + 1)
#define DM_NAME_LEN 64
#define DM_NAME_LEN 128
#define MAX_TARGET_LINE 256
enum {