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chdir-notify: add function to unregister listeners 

While we (obviously) have a way to register new listeners that get
called whenever we chdir(3p), we don't have an equivalent that can be
used to unregister such a listener again.

Add one, as it will be required in a subsequent commit.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
main
Patrick Steinhardt 2025-11-19 08:50:59 +01:00 committed by Junio C Hamano
parent 35d9fc65ed
commit 2574c61736
2 changed files with 20 additions and 0 deletions
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18
chdir-notify.c
View File

@ -25,6 +25,24 @@ void chdir_notify_register(const char *name,
list_add_tail(&e->list, &chdir_notify_entries); list_add_tail(&e->list, &chdir_notify_entries);
} }


void chdir_notify_unregister(const char *name, chdir_notify_callback cb,
void *data)
{
struct list_head *pos, *p;

list_for_each_safe(pos, p, &chdir_notify_entries) {
struct chdir_notify_entry *e =
list_entry(pos, struct chdir_notify_entry, list);

if (e->cb != cb || e->data != data || !e->name != !name ||
(e->name && strcmp(e->name, name)))
continue;

list_del(pos);
free(e);
}
}

static void reparent_cb(const char *name, static void reparent_cb(const char *name,
const char *old_cwd, const char *old_cwd,
const char *new_cwd, const char *new_cwd,

2
chdir-notify.h
View File

@ -41,6 +41,8 @@ typedef void (*chdir_notify_callback)(const char *name,
const char *new_cwd, const char *new_cwd,
void *data); void *data);
void chdir_notify_register(const char *name, chdir_notify_callback cb, void *data); void chdir_notify_register(const char *name, chdir_notify_callback cb, void *data);
void chdir_notify_unregister(const char *name, chdir_notify_callback cb,
void *data);
void chdir_notify_reparent(const char *name, char **path); void chdir_notify_reparent(const char *name, char **path);


/* /*