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inotify-map.c: return a copy of a path list in lookup functions.

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Becouse it is possible to change the a list stored by the API while traversing it, a bug can couse a infinite loop.
lets be strict about this and only return a copy of the list, so it can't be changed by calls to the API.
This commit is contained in:
Henrik Hautakoski 2011-01-30 15:55:51 +01:00
parent 33ceeca315
commit 440e5ed7d2
4 changed files with 22 additions and 17 deletions
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8
src/inotify-map.c
View file

@ -148,13 +148,13 @@ int inotify_map_get_wd(const char *path) {
return 0;
}
const struct str_list* inotify_map_lookup(int wd) {
char** inotify_map_lookup(int wd) {
struct map_wd *m = rbtree_search(&tree_wd_paths, &wd);
return m ? &m->paths : NULL;
return m ? str_list_export(&m->paths) : NULL;
}
const struct str_list* inotify_map_lookup_by_path(const char *path) {
char** inotify_map_lookup_by_path(const char *path) {
struct map_path *p = rbtree_search(&tree_path_wd, &path);
return p ? inotify_map_lookup(p->wd) : NULL;

4
src/inotify-map.h
View file

@ -23,9 +23,9 @@ void inotify_unmap_all();
int inotify_map_get_wd(const char *path);
const struct str_list* inotify_map_lookup(int wd);
char** inotify_map_lookup(int wd);
const struct str_list* inotify_map_lookup_by_path(const char *path);
char** inotify_map_lookup_by_path(const char *path);
int inotify_map_isempty();

12
src/inotify.c
View file

@ -58,8 +58,6 @@ static int addwatch(const char *path, const char *name, unsigned recursive) {
return -1;
}
inotify_map(wd, npath);
logmsg(LOG_DEBUG, "added wd = %i on %s", wd, npath);
if (recursive) {
@ -89,6 +87,7 @@ static int addwatch(const char *path, const char *name, unsigned recursive) {
}
fsc_close(f);
}
inotify_map(wd, npath);
return 1;
}
@ -123,8 +122,7 @@ static int rmwatch(const char *path, const char *name) {
static void proc_event(inoev *iev) {
const struct str_list *paths;
char **path;
char **paths, **path;
int isdir;
logmsg(LOG_DEBUG, "RAW EVENT: %i, %x, %s", iev->wd, iev->mask, iev->name);
@ -146,7 +144,7 @@ static void proc_event(inoev *iev) {
isdir = (iev->mask & IN_ISDIR) != 0;
iev->mask &= ~IN_ISDIR;
str_list_foreach(path, paths) {
for(path = paths; *path; path++) {
uint8_t type = NOTIFY_UNKNOWN;
notify_event *event = notify_event_new();
@ -163,7 +161,7 @@ static void proc_event(inoev *iev) {
case IN_CREATE :
if (event->dir) {
logmsg(LOG_DEBUG, "IN_CREATE on directory, adding");
addwatch(event->path, event->filename, 0);
addwatch(event->path, event->filename, 1);
}
type = NOTIFY_CREATE;
break;
@ -184,6 +182,8 @@ static void proc_event(inoev *iev) {
event->type = type;
}
free(paths);
}
int notify_init() {

15
test/t_inotify-map.c
View file

@ -22,18 +22,23 @@ static void teardown() {
inotify_unmap_all();
}
static void validate_list(int refindex, const struct str_list *l) {
static void validate_list(int index, char **list) {
int i;
assert(l);
assert(list);
for(i=0; i < 4; i++) {
if (i != wdref[refindex])
char **path, found = 0;
if (i != wdref[index])
continue;
assert(str_list_has(l, pathref[refindex]));
for(path=list; !found && *path; path++) {
if (!strcmp(*path, pathref[index]))
found = 1;
}
assert(found);
}
}