static ssize_t
mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
size_t count, loff_t *off)
{
struct seq_file *m = file->private_data;
struct mdd_device *mdd = m->private;
char *kernbuf;
int rc;
ENTRY;
if (count >= PAGE_SIZE)
RETURN(-EINVAL);
OBD_ALLOC(kernbuf, PAGE_SIZE);
if (kernbuf == NULL)
RETURN(-ENOMEM);
if (copy_from_user(kernbuf, buffer, count))
GOTO(out, rc = -EFAULT);
kernbuf[count] = 0;
rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
if (rc == 0)
rc = count;
out:
OBD_FREE(kernbuf, PAGE_SIZE);
return rc;
}
int
libcfs_debug_str2mask(int *mask, const char *str, int is_subsys)
{
const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
libcfs_debug_dbg2str;
int m = 0;
int matched;
int n;
int t;
/* Allow a number for backwards compatibility */
for (n = strlen(str); n > 0; n--)
if (!isspace(str[n-1]))
break;
matched = n;
t = sscanf(str, "%i%n", &m, &matched);
if (t >= 1 && matched == n) {
/* don't print warning for lctl set_param debug=0 or -1 */
if (m != 0 && m != -1)
CWARN("You are trying to use a numerical value for the mask - this will be deprecated in a future release.\n");
*mask = m;
return 0;
}
return cfs_str2mask(str, fn, mask, is_subsys ? 0 : D_CANTMASK,
0xffffffff);
}
static int lprocfs_wr_changelog_mask(struct file *file, const char *buffer,
unsigned long count, void *data)
{
struct mdd_device *mdd = data;
char *kernbuf;
int rc;
ENTRY;
if (count >= PAGE_CACHE_SIZE)
RETURN(-EINVAL);
OBD_ALLOC(kernbuf, PAGE_CACHE_SIZE);
if (kernbuf == NULL)
RETURN(-ENOMEM);
if (copy_from_user(kernbuf, buffer, count))
GOTO(out, rc = -EFAULT);
kernbuf[count] = 0;
rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
if (rc == 0)
rc = count;
out:
OBD_FREE(kernbuf, PAGE_CACHE_SIZE);
return rc;
}
