|
 |
4d476f |
autofs-5.1.0 - fix mount as you go offset selection
|
|
|
4d476f |
|
|
|
4d476f |
From: Ian Kent <raven@themaw.net>
|
|
|
4d476f |
|
|
|
4d476f |
The function cache_get_offset() returns offsets to be mounted that
|
|
|
4d476f |
are within the current current subtree for the mount-as-you-go
|
|
|
4d476f |
functionality used for nested multi-mount map entries.
|
|
|
4d476f |
|
|
|
4d476f |
However, the function was returning offsets from the subree below
|
|
|
4d476f |
nesting points which prevented the mount at the containing nesting
|
|
|
4d476f |
point from being mounted. This is because the kernel will see a
|
|
|
4d476f |
non-empty directory and conclude it isn't a mount point.
|
|
|
4d476f |
---
|
|
|
4d476f |
CHANGELOG | 1 +
|
|
|
4d476f |
lib/cache.c | 27 ++++++++++++++++++++++++---
|
|
|
4d476f |
2 files changed, 25 insertions(+), 3 deletions(-)
|
|
|
4d476f |
|
|
|
4d476f |
--- autofs-5.0.7.orig/CHANGELOG
|
|
|
4d476f |
+++ autofs-5.0.7/CHANGELOG
|
|
|
4d476f |
@@ -168,6 +168,7 @@
|
|
|
4d476f |
- handle duplicates in multi mounts.
|
|
|
4d476f |
- fix macro usage in lookup_program.c.
|
|
|
4d476f |
- remove unused offset handling code.
|
|
|
4d476f |
+- fix mount as you go offset selection.
|
|
|
4d476f |
|
|
|
4d476f |
25/07/2012 autofs-5.0.7
|
|
|
4d476f |
=======================
|
|
|
4d476f |
--- autofs-5.0.7.orig/lib/cache.c
|
|
|
4d476f |
+++ autofs-5.0.7/lib/cache.c
|
|
|
4d476f |
@@ -1183,7 +1183,6 @@ struct mapent *cache_enumerate(struct ma
|
|
|
4d476f |
* Get each offset from list head under prefix.
|
|
|
4d476f |
* Maintain traversal current position in pos for subsequent calls.
|
|
|
4d476f |
* Return each offset into offset.
|
|
|
4d476f |
- * TODO: length check on offset.
|
|
|
4d476f |
*/
|
|
|
4d476f |
/* cache must be read locked by caller */
|
|
|
4d476f |
char *cache_get_offset(const char *prefix, char *offset, int start,
|
|
|
4d476f |
@@ -1212,6 +1211,9 @@ char *cache_get_offset(const char *prefi
|
|
|
4d476f |
continue;
|
|
|
4d476f |
|
|
|
4d476f |
if (!strncmp(prefix, offset_start, plen)) {
|
|
|
4d476f |
+ struct mapent *np = NULL;
|
|
|
4d476f |
+ char pe[PATH_MAX + 1];
|
|
|
4d476f |
+
|
|
|
4d476f |
/* "/" doesn't count for root offset */
|
|
|
4d476f |
if (plen == 1)
|
|
|
4d476f |
pstart = &offset_start[plen - 1];
|
|
|
4d476f |
@@ -1224,7 +1226,24 @@ char *cache_get_offset(const char *prefi
|
|
|
4d476f |
|
|
|
4d476f |
/* get next offset */
|
|
|
4d476f |
pend = pstart;
|
|
|
4d476f |
- while (*pend++) ;
|
|
|
4d476f |
+ while (*pend++) {
|
|
|
4d476f |
+ size_t nest_pt_offset;
|
|
|
4d476f |
+
|
|
|
4d476f |
+ if (*pend != '/')
|
|
|
4d476f |
+ continue;
|
|
|
4d476f |
+
|
|
|
4d476f |
+ nest_pt_offset = start + pend - pstart;
|
|
|
4d476f |
+ if (plen > 1)
|
|
|
4d476f |
+ nest_pt_offset += plen;
|
|
|
4d476f |
+ strcpy(pe, this->key);
|
|
|
4d476f |
+ pe[nest_pt_offset] = '\0';
|
|
|
4d476f |
+
|
|
|
4d476f |
+ np = cache_lookup_distinct(this->mc, pe);
|
|
|
4d476f |
+ if (np)
|
|
|
4d476f |
+ break;
|
|
|
4d476f |
+ }
|
|
|
4d476f |
+ if (np)
|
|
|
4d476f |
+ continue;
|
|
|
4d476f |
len = pend - pstart - 1;
|
|
|
4d476f |
strncpy(offset, pstart, len);
|
|
|
4d476f |
offset[len] ='\0';
|
|
|
4d476f |
@@ -1257,7 +1276,9 @@ char *cache_get_offset(const char *prefi
|
|
|
4d476f |
break;
|
|
|
4d476f |
|
|
|
4d476f |
/* compare offset */
|
|
|
4d476f |
- if (pstart[len] != '/' || strncmp(offset, pstart, len))
|
|
|
4d476f |
+ if (pstart[len] != '/' ||
|
|
|
4d476f |
+ strlen(pstart) != len ||
|
|
|
4d476f |
+ strncmp(offset, pstart, len))
|
|
|
4d476f |
break;
|
|
|
4d476f |
|
|
|
4d476f |
*pos = next;
|